مجموعة تكنولاب البهاء جروب

تحاليل وتنقية ومعالجة المياه
 
الرئيسيةالبوابةمكتبة الصورس .و .جبحـثقائمة الاعضاءالمجموعاتالتسجيلدخول
تنظيف وتطهير وغسيل واعادة تاهيل الخزانات


معمل تكنولاب البهاء جروب
 للتحاليل الكيميائية والطبية
والتشخيص بالنظائر المشعة
 للمخدرات والهرمونات والسموم
 وتحاليل المياه

مجموعة
تكنولاب البهاء جروب
لتصميم محطات الصرف الصناعى والصحى
لمعالجة مياه الصرف الصناعى والصحى
مجموعة تكنولاب البهاء جروب
المكتب الاستشارى العلمى
دراسات علمية كيميائية



معالجة الغلايات وانظمة البخار المكثف
معالجة ابراج التبريد المفتوحة
معالجة الشيللرات
مجموعة تكنولاب البهاء جروب
اسنشاريين
كيميائيين/طبيين/بكترولوجيين
عقيد دكتور
بهاء بدر الدين محمود
رئيس مجلس الادارة
استشاريون متخصصون فى مجال تحاليل وتنقية ومعالجة المياه
متخصصون فى تصنيع وتصميم كيماويات
معالجة الصرف الصناعى والصحى
حسب كل مشكلة كل على حدة
تصنيع وتحضير كيماويات معالجة المياه الصناعية
مؤتمرات/اجتماعات/محاضرات/فريق عمل متميز
صور من وحدات معالجة المياه


technolab el-bahaa group
TECHNOLAB EL-BAHAA GROUP
EGYPT
FOR
WATER
TREATMENT/PURIFICATION/ANALYSIS
CONSULTANTS
CHEMIST/PHYSICS/MICROBIOLIGIST
 
INDUSTRIAL WATER
WASTE WATER
DRINKING WATER
TANKS CLEANING
 
CHAIRMAN
COLONEL.DR
BAHAA BADR EL-DIN
0117156569
0129834104
0163793775
0174041455

 

 

 

تصميم وانشاء محطات صرف صناعى/waste water treatment plant design

technolab el-bahaa group
egypt
We are a consultants in water treatment with our chemicals as:-
Boiler water treatment chemicals
Condensated steam treatment chemicals
Oxygen scavenger treatment chemicals
Ph-adjustment treatment chemicals
Antiscale treatment chemicals
Anticorrosion treatment chemicals
Open cooling tower treatment chemicals
Chillers treatment chemicals
Waste water treatment chemicals
Drinking water purification chemicals
Swimming pool treatment chemicals
Fuel oil improver(mazote/solar/benzene)
technolab el-bahaa group
egypt
We are consultants in extraction ,analysis and trading the raw materials of mines as:-
Rock phosphate
32%-30%-28%-25%
Kaolin
Quartez-silica
Talcum
Feldspae(potash-sodumic)
Silica sand
Silica fume
Iron oxid ore
Manganese oxid
Cement(42.5%-32.5%)
Ferro manganese
Ferro manganese high carbon

 

water treatment unit design


 

وكلاء لشركات تركية وصينية لتوريد وتركيب وصيانة الغلايات وملحقاتها
solo agent for turkish and chinese companies for boiler production/manufacture/maintance

 

وكلاء لشركات تركية وصينية واوروبية لتصنيع وتركيب وصيانة ابراج التبريد المفتوحة

 

تصميم وتوريد وتركيب الشيللرات
design/production/maintance
chillers
ابراج التبريد المفتوحة
مجموعة تكنولاب البهاء جروب
المكتب الاستشارى العلمى
قطاع توريد خطوط انتاج المصانع
 
نحن طريقك لاختيار افضل خطوط الانتاج لمصنعكم
سابقة خبرتنا فى اختيار خطوط الانتاج لعملاؤنا
 
1)خطوط انتاج العصائر الطبيعية والمحفوظة والمربات
2)خطوط انتاج الزيوت الطبيعية والمحفوظة
3)خطوط انتاج اللبن الطبيعى والمحفوظ والمبستر والمجفف والبودرة
4)خطوط تعليب وتغليف الفاكهة والخضروات
5)خطوط انتاج المواسير البلاستيك والبى فى سى والبولى ايثيلين
6)خطوط انتاج التراى كالسيوم فوسفات والحبر الاسود
7)خطوط انتاج الاسفلت بانواعه
Coolمحطات معالجة الصرف الصناعى والصحى بالطرق البيولوجية والكيميائية
9)محطات معالجة وتنقية مياه الشرب
10)محطات ازالة ملوحة البحار لاستخدامها فى الشرب والرى
11)الغلايات وخطوط انتاج البخار الساخن المكثف
12)الشيللرات وابراج التبريد المفتوحة وخطوط انتاج البخار البارد المكثف
 
للاستعلام
مجموعة تكنولاب البهاء جروب
0117156569
0129834104
0163793775
 
القاهرة-شارع صلاح سالم-عمارات العبور-عمارة 17 ب
فلا تر رملية/كربونية/زلطيه/حديدية

وحدات سوفتنر لازالة عسر المياه

مواصفات مياه الشرب
Drinking water
acceptable
values

50

colour

acceptable

Taste

nil

Odour

6.5-9.2

ph

 

1 mg/dl

pb

5 mg/dl

as

50 mg/dl

cn

10 mg/dl

cd

0-100mg/dl

hg

8 mg/dl

f

45 mg/dl

N02

1 mg/dl

Fe

5 mg/dl

Mn

5.1 mg/dl

Cu

200 mg/dl

Ca

150 mg/dl

Mg

600 mg/dl

Cl

400 mg/dl

S04

200 mg/dl

Phenol

15 mg/dl

zn

 

 

الحدود المسموح به
ا لملوثات الصرف الصناعى
 بعد المعالجة
Acceptable
values
treated wate water
7-9.5

ph

25-37 c

Temp

40 mg/dl

Suspended solid

35 mg/dl

bod

3 mg/dl

Oil & grase

0.1 mg/dl

hg

0.02 mg/dl

cd

0.1 mg/dl

cn

0.5mg/dl

phenol

1.5 ds/m

conductivity

200 mg/dl

na

120 mg/dl

ca

56 mg/dl

mg

30 mg/dl

k

200 mg/dl

cl

150 mg/dl

S02

0.75 mg/dl

Fe

0.2 mg/dl

Zn

0.5 mg/dl

Cu

0.03 mg/dl

Ni

0.09 mg/dl

Cr

0.53 mg/dl

لb

0.15 mg/dl

pb

 





pipe flocculator+daf
plug flow flocculator
lamella settels

محطات تحلية مياه البحر بطريقة التقطير الومضى على مراحل
MSF+3.jpg (image)
محطات التقطير الومضى لتحلية مياه البحر2[MSF+3.jpg]
some of types of tanks we services
انواع الخزانات التى يتم تنظيفها
ASME Specification Tanks
Fuel Tanks
Storage Tanks
Custom Tanks
Plastic Tanks
Tank Cleaning Equipment
Double Wall Tanks
Septic Tanks
Water Storage Tanks
Fiberglass Reinforced Plastic Tanks
Stainless Steel Tanks
Custom / Septic
مراحل المعالجة الاولية والثانوية والمتقدمة للصرف الصناعى

صور مختلفة
من وحدات وخزانات معالجة الصرف الصناعى
 التى تم تصميمها وتركيبها من قبل المجموعة

صور
 من خزانات الترسيب الكيميائى والفيزيائى
 لوحدات معالجة الصرف الصناعى
المصممة من قبل المحموعة



technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group

technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group




مياه رادياتير اخضر اللون
بريستول تو ايه
انتاج شركة بريستول تو ايه - دمياط الجديدة
مجموعة تكنولاب البهاء جروب

اسطمبات عبوات منتجات شركة بريستول تو ايه-دمياط الجديدة

مياه رادياتير خضراء فوسفورية

من انتاج شركة بريستول تو ايه 

بترخيص من مجموعة تكنولاب البهاء جروب


زيت فرامل وباكم

DOT3



شاطر | 
 

 تصميم وتصنيع وتركيب وتوريد محطات معالجة الصرف الصناعى-لشركات انتاج الكيماويات والغازات الصناعية

استعرض الموضوع السابق استعرض الموضوع التالي اذهب الى الأسفل 
كاتب الموضوعرسالة
Admin
Admin


عدد المساهمات : 3443
تاريخ التسجيل : 15/09/2009
العمر : 49
الموقع : مصر

مُساهمةموضوع: تصميم وتصنيع وتركيب وتوريد محطات معالجة الصرف الصناعى-لشركات انتاج الكيماويات والغازات الصناعية   الجمعة أكتوبر 03, 2014 2:07 am

Technical study
in
industrial waste water treatment
for
chemicals production lines
___________________________________
Wastewater Treatment Methods& Disposal 


Satisfactory disposal of wastewater, whether by surface, subsurface methods or dilution, is dependent on its treatment prior to disposal. 


Adequate treatment is necessary to prevent contamination of receiving waters to a degree which might interfere with their best or intended use, whether it be for water supply, recreation, or any other required purpose. 


Wastewater treatment consists of applying known technology to improve or upgrade the quality of a wastewater. 


Usually wastewater treatment will involve collecting the wastewater in a central, segregated location (the Wastewater Treatment Plant) and subjecting the wastewater to various treatment processes. 


Most often, since large volumes of wastewater are involved, treatment processes are carried out on continuously flowing wastewaters (continuous flow or "open" systems) rather than as "batch" or a series of periodic treatment processes in which treatment is carried out on parcels or "batches" of wastewaters. 


While most wastewater treatment processes are continuous flow, certain operations, such as vacuum filtration, involving as it does, storage of sludge, the addition of chemicals, filtration and removal or disposal of the treated sludge, are routinely handled as periodic batch operations. 


Wastewater treatment, however, can also be organized or categorized by the nature of the treatment process operation being used; for example, physical, chemical or biological. 


Examples of these treatment steps are shown below. 


A complete treatment system may consist of the application of a number of physical, chemical and biological processes to the wastewater. 


Physical


Sedimentation (Clarification)


Screening


Aeration


Filtration


Flotation and Skimming


Degassification


Equalization




Chemical


Chlorination 


Ozonation 


Neutralization 


Coagulation 


Adsorption 


Ion Exchange




Biological


Aerobic


Activated Sludge Treatment Methods 


Trickling Filtration 


Oxidation Ponds 


Lagoons 


Aerobic Digestion 


Anaerobic


Anaerobic Digestion 


Septic Tanks 


Lagoons


Industrial Wastewater Treatment


Physical treatment methods
 
include processes where no gross chemical or biological changes are carried out and strictly physical phenomena are used to improve or treat the wastewater. 


Examples would be coarse screening to remove larger entrained objects and sedimentation (or clarification).


In the process of sedimentation, physical phenomena relating to the settling of solids by gravity are allowed to operate. 


Usually this consists of simply holding a wastewater for a short period of time in a tank under quiescent conditions, allowing the heavier solids to settle, and removing the "clarified" effluent. 


Sedimentation 


for solids separation is a very common process operation and is routinely employed at the beginning and end of wastewater treatment operations.


While sedimentation is one of the most common physical treatment processes that is used to achieve treatment, another physical treatment process consists of aeration -- that is, physically adding air, usually to provide oxygen to the wastewater. Still other physical phenomena used in treatment consists of filtration. 


Here wastewater is passed through a filter medium to separate solids. 


An example would be the use of sand filters to further remove entrained solids from a treated wastewater. 


Certain phenomena will occur during the sedimentation process and can be advantageously used to further improve water quality.


Permitting greases or oils, for example, to float to the surface and skimming or physically removing them from the wastewaters is often carried out as part of the overall treatment process. 


In certain industrial wastewater treatment processes strong or undesirable wastes are sometimes produced over short periods of time. 


Since such "slugs" or periodic inputs of such wastes would damage a biological treatment process, these wastes are sometimes held, mixed with other wastewaters, and gradually released, thus eliminating "shocks" to the treatment plant. 


This is call equalization. 


Another type of "equalization" can be used to even out wide variations in flow rates. 


For example, the wet well of a pump station can receive widely varying amounts of wastewater and, in turn, pump the wastes onward at more uniform rates. 


Chemical treatment 


consists of using some chemical reaction or reactions to improve the water quality.


Probably the most commonly used chemical process is chlorination. 


Chlorine, 


a strong oxidizing chemical, is used to kill bacteria and to slow down the rate of decomposition of the wastewater. 


Bacterial kill is achieved when vital biological processes are affected by the chlorine. Another strong oxidizing agent that has also been used as an oxidizing disinfectant is ozone. 


A chemical process commonly used in many industrial wastewater treatment operations is neutralization. 


Neutralization consists of the addition of acid or base to adjust pH levels back to neutrality. 


Since lime is a base it is sometimes used in the neutralization of acid wastes. 


Coagulation


consists of the addition of a chemical that, through a chemical reaction, forms an insoluble end product that serves to remove substances from the wastewater. 


Polyvalent metals 


are commonly used as coagulating chemicals in wastewater treatment and typical coagulants would include lime (that can also be used in neutralization), certain iron containing compounds (such as ferric chloride or ferric sulfate) and alum (aluminum sulfate). 


Certain processes may actually be physical and chemical in nature. 


The use of activated carbon to "adsorb" or remove organics, for example, involves both chemical and physical processes. 


Processes such as ion exchange, which involves exchanging certain ions for others, are not used to any great extent in wastewater treatment. 


Biological treatment methods use microorganisms, mostly bacteria, in the biochemical decomposition of wastewaters to stable end products. 


More microorganisms, or sludges, are formed and a portion of the waste is converted to carbon dioxide, water and other end products. 


Generally, biological treatment methods can be divided into aerobic and anaerobic methods, based on availability of dissolved oxygen. 


The purpose of wastewater treatment is generally to remove from the wastewater enough solids to permit the remainder to be discharged to a receiving water without interfering with its best or proper use. 


The solids which are removed are primarily organic but may also include inorganic solids. 


Treatment must also be provided for the solids and liquids which are removed as sludge. 


Finally, treatment to control odors, to retard biological activity, or destroy pathogenic organisms may also be needed. 


While the devices used in wastewater treatment are numerous and will probably combine physical, chemical and biological methods, they may all be generally grouped under six methods:




Preliminary Treatment


Primary Treatment


Secondary Treatment


Disinfection


Sludge Treatment


Tertiary Treatment




Degrees of treatment are sometimes indicated by use of the terms primary, secondary and tertiary treatment. 


Tertiary treatment, properly, would be any treatment added onto or following secondary treatment. 


Preliminary Treatment


At most plants preliminary treatment is used to protect pumping equipment and facilitate subsequent treatment processes. 


Preliminary devices are designed to remove or cut up the larger suspended and floating solids, to remove the heavy inorganic solids, and to remove excessive amounts of oils or greases. 


To effect the objectives of preliminary treatment, the following devices are commonly used: 


Screens -- rack, bar or fine


Comminuting devices -- grinders, cutters, shredders


Grit chambers


Pre-aeration tanks




In addition to the above, chlorination may be used in preliminary treatment. 


Since chlorination may be used at all stages in treatment, it is considered to be a method by itself.


Preliminary treatment devices require careful design and operation. 




Primary Treatment


In this treatment, most of the settleable solids are separated or removed from the wastewater by the physical process of sedimentation. 


When certain chemicals are used with primary sedimentation tanks, some of the colloidal solids are also removed. 


Biological activity of the wastewater in primary treatment is of negligible importance. 


The purpose of primary treatment is to reduce the velocity of the wastewater sufficiently to permit solids to settle and floatable material to surface. 


Therefore, primary devices may consist of settling tanks, clarifiers or sedimentation tanks. 


Because of variations in design, operation, and application, settling tanks can be divided into four general groups: 


Septic tanks


Two story tanks -- Imhoff and several proprietary or patented units


Plain sedimentation tank with mechanical sludge removal


Upward flow clarifiers with mechanical sludge removal




When chemicals are used, other auxiliary units are employed. 


These are: 


Chemical feed units


Mixing devices


Flocculators




The results obtained by primary treatment, together with anaerobic sludge digestion as described later, are such that they can be compared with the zone of degradation in stream self-purification. 


The use of chlorine with primary treatment is discussed under the section on


Preliminary Treatment. 


Secondary Treatment


Secondary treatment depends primarily upon aerobic organisms which biochemically decompose the organic solids to inorganic or stable organic solids. 


It is comparable to the zone of recovery in the self-purification of a stream. 


The devices used in secondary treatment may be divided into four groups: 


Trickling filters with secondary settling tanks


Activated sludge and modifications with final settling tanks


Intermittent sand filters


Stabilization ponds


The use of chlorine with secondary treatment is discussed under the section on Secondary Treatment


Chlorination


This is a method of treatment which has been employed for many purposes in all stages in wastewater treatment, and even prior to preliminary treatment. 


It involves the application of chlorine to the wastewater for the following purposes: 


Disinfection or destruction of pathogenic organisms


Prevention of wastewater decomposition --




(a) odor control, and


(b) protection of plant structures 


Aid in plant operation --




(a) sedimentation,


(b) trickling filters,


(c) activated sludge bulking


Reduction or delay of biochemical oxygen demand (BOD)




While chlorination has been commonly used over the years, especially for disinfection, other methods to achieve disinfection as well as to achieve similar treatment ends are also used. 


Among the most common is the use of ozone. In view of the toxicity of chlorine and chlorinated compounds for fish as well as other living forms, ozonation may be more commonly used in the future. 


This process will be more fully discussed in the section on disinfection. 


Sludge Treatment


The solids removed from wastewater in both primary and secondary treatment units, together with the water removed with them, constitute wastewater sludge. 


It is generally necessary to subject sludge to some treatment to prepare or condition it for ultimate disposal. 


Such treatment has two objectives -- the removal of part or all of the water in the sludge to reduce its volume, and the decomposition of the putrescible organic solids to mineral solids or to relatively stable organic solids. 


This is accomplished by a combination of two or more of the following methods: 


Thickening


Digestion with or without heat


Drying on sand bed -- open or covered


Conditioning with chemicals


Elutriation


Vacuum filtration


Heat drying


Incineration


Wet oxidation


Centrifuging


Package UnitsThe term "package units" is used in the field to describe equipment which has been put on the market by a number of manufacturers that is intended to provide wastewater treatment by the use of prefabricated or modular units. 


Package units can also refer to a complete installation, including both mechanisms and prefabricated containers. 


This term is also applied to installations where only the mechanisms are purchased and the containers constructed by the purchaser in accordance with plans and specifications prepared by the manufacturer. 


Though specific limitations have not been established, individual package units have, in general, been small installations serving a limited population. 


Package units have been adapted to practically all the treatment devices, either singly or in various combinations that have been mentioned. 


Tertiary and Advanced Wastewater Treatment


The terms "primary" and "secondary" treatment have been used to generally describe a degree of treatment; 


for example, settling and biological wastewater treatment. Since the early 1970's "tertiary" treatment has come into use to describe additional treatment following secondary treatment.


Quite often this merely indicates the use of intermittent sand filters for increased removal of suspended solids from the wastewater. 


In other cases, tertiary treatment has been used to describe processes which remove plant nutrients, primarily nitrogen and phosphorous, from wastewater. 


Improvement and upgrading of wastewater treatment units as well as the need to minimize environmental effects has led to the increased use of tertiary treatment. 


A term that is also sometimes used to indicate treatment of a wastewater by methods other than primary or biological (secondary) treatment is advanced treatment.


This degree of treatment is usually achieved by chemical (for example coagulation) methods as well as physical methods (flocculation, settling and activated carbon adsorption) to produce a high quality effluent water.
الرجوع الى أعلى الصفحة اذهب الى الأسفل
معاينة صفحة البيانات الشخصي للعضو http://technolabelbahaagp.googoolz.com
Admin
Admin


عدد المساهمات : 3443
تاريخ التسجيل : 15/09/2009
العمر : 49
الموقع : مصر

مُساهمةموضوع: رد: تصميم وتصنيع وتركيب وتوريد محطات معالجة الصرف الصناعى-لشركات انتاج الكيماويات والغازات الصناعية   الجمعة أكتوبر 03, 2014 2:12 am

chemical treatment methodes


Industrial wastewater treatment involves treating wastewater to make it acceptable for discharge into a river, stream, lake, ocean, etc. 


The treatment of industrial wastewater involves the use of various processes and performance chemicals to remove impurities from the water by coagulation, precipitation, flotation, sedimentation, filtration, biological oxidation, chemical oxidation, etc.




The following lists impurities that can be removed and problems that can be solved by using one or a combination of  specialty treatment products:


Total Suspended Solids (TSS) removal
Color removal
Fat, Oil and Grease removal
Heavy Metals removal
Chemical Oxygen Demand (COD) reduction
Total Organic Carbon (TOC) removal
Biological Oxygen Demand (BOD) reduction
Sludge Dewatering
Hydrogen Sulfide odor control
Improve operational consistency 






1-Suspended Solids Removal


In both municipal and industrial wastewater treatment applications there are many types of materials that need to be removed. 


They can be organic solids, inorganic solids, oils, fats, etc. To remove these solids generally requires a product that has both good coagulating and flocculating capabilities.


the Solution:


Each different solid present in wastewater has its unique characteristics. 


it carries a line of specialty products specifically designed to remove wastewater solids. 


The products that will best assist you in solids removal are:


Aluminum Chloride Solution
Aluminum Chlorohydrate Solution
Ferric Chloride Solution
Polyaluminum Chloride Solution


2-Color Removal


Color in water comes from natural sources resulting from the decaying of leaves or other vegetation.


Color can also come from chemicals in the water resulting from industrial wastewater or agriculture runoff.


Most of the color present in water is soluble and very difficult to remove. 


One approach to remove color is to oxidize it with chlorine. 


This may reduce the color but it may also generate other organic compounds that also have to be removed from the water.


the Solution:


it has several products that work well in removing color from water.


In one case they work by absorbing the color in a large voluminous floc. 


In another the anionic charge of the color allows the material to be selectively precipitated with an inorganic aluminum polyelectrolyte. 


The products that will best assist in TOC removal are:


Aluminum Chloride Solution
Ferric Chloride Solution
Polyaluminum Chloride Solution


3-Oil Removal


In industrial wastewater, oils and greases are often removed by flotation. 


Sometimes these oils and greases are present in the form of an emulsion. 


To separate this type of oil, the emulsion must be broken. 


These emulsions are negatively charged and can be readily coagulated and removed by flotation with a strong inorganic coagulant.
-
the Solution:
a several inorganic coagulants that are very effective in breaking emulsions and coagulating oils. 


They are:


Aluminum Chloride Solution
Ferric Chloride Solution
Polyaluminum Chloride Solution




4-TOC, COD and BOD Removal


TOC is the measure of the Total Organic Carbon, COD is the measure of the Chemical Oxygen Demand and BOD is the measure of the Biological Oxygen Demand in wastewater. 


These three parameters are used to characterize both municipal and industrial wastewater. 


BOD tends to be used more frequently in municipal wastewater treatment, and COD is used more often in industrial wastewater treatment.


In both municipal and industrial wastewater treatment applications there are many types of materials that contribute to TOC, BOD and COD. 


They can be organics, inorganics, oils, fats, etc. TOC, BOD and COD can be removed by coagulation and/or filtration when they are in the form of suspended solids. 


If they are soluble, then adsorption, biological oxidation or chemical oxidation processes are needed to remove them. 


To remove suspended TOC, BOD and COD generally requires product that has both good coagulating and flocculating capabilities.


the Solution:
Each different solid present in wastewater has its unique characteristics.


it carries a line of specialty products specifically designed to remove wastewater solids. 


The products that will best assist you in solids removal are:


Aluminum Chloride Solution
Ferric Chloride Solution
Polyaluminum Chloride Solution


5-Sludge Dewatering


In all water/solids separation processes, the solids must be handled and disposed of.


The volume of solids is directly related to the ultimate cost of disposal, and disposal costs are rising as regulations tighten and land values rise.


In cases where dewatering equipment is used to increase the percentage of solids in the sludge, the choice of dewatering chemical will make a significant difference in the results obtained. 


The cost of the chemical is small compared to the cost savings of producing smaller sludge volumes through eliminating excess water. 


Inorganics like ferric chloride and lime were widely used in the past but lost ground as the technology of organic polyelectrolytes proliferated. 


Today, many municipal and industrial accounts are using combinations of organics and inorganics to ensure the best all-around performance.


the Solution:


a several products that can be used alone, in combinations with lime or in combination with organic polyelectrolytes. 


They are:


Ferric Chloride Solution
Organic Polyelectrolytes


6-Hydrogen Sulfide Odor Control


In both municipal and industrial wastewater distribution systems and treatment plants hydrogen sulfide gas can form. 


This gas, above threshold levels, can cause severe odor problems.


Irons salts in solution will react with the hydrogen sulfide dissolved in water and precipitate a fine suspension of iron sulfide.
the Solutions:
a several iron salts that readily react with hydrogen sulfide to form iron sulfides. 


They are:


Ferric Chloride Solution
Ferrous Chloride Solution
7-Improved Operational Consistency


When looking at the use of chemicals for treating water and wastewater one must look at the entire system. 


This includes clarification, filtration, disinfection and sludge dewatering. 


The products used in the coagulation process have an impact on the operating efficiency of subsequent treatment processes.


A product may work well in one process but cause major problems in another.


As an example you may find a product works well to clarify water but it generates a sludge that is very difficult to dewater.


the Solutions:


a range of polyaluminum chemicals that are strongly cationic and prehydrolyzed, making them more reactive at lower dosages than conventional coagulants. 


Lower dosages generally mean less solids carryover and less sludge generated. 


The solids generated when using these polyaluminum chemicals are less voluminous and easier to filter and dewater. 


These product attributes translate into a more constant and uniform operation with all interrelated processes. 


The products that will best assist you in filtration are:


Aluminum Chlorohydrate Solution
Polyaluminum Chloride Solution
Polyaluminum Chlorosulfate Solution


Coagulation and Flocculation


Objective


How do coagulation and flocculation fit into the water treatment process?
Which chemical principles influence coagulation and flocculation?
Which chemicals are used in coagulation?
What factors influence coagulation and flocculation?




Overview of the Process


After the source water has been screened and has passed through the optional steps of pre-chlorination and aeration, it is ready for coagulation and flocculation. 




In theory and at the chemical level, coagulation and flocculation is a three step process, consisting of flash mixing, coagulation, and flocculation.
  


However, in practice in the treatment plant, there are only two steps in the coagulation/flocculation process - the water first flows into the flash mix chamber, and then enters the flocculation basin. 


Purpose 


The primary purpose of the coagulation/flocculation process is the removal of turbidity from the water. 


Turbidity is a cloudy appearance of water caused by small particles suspended therein. Water with little or no turbidity will be clear.


Turbidity is not only an aesthetic problem in water. Water with a high turbidity can be very difficult or impossible to properly disinfect. 


As a result, the maximum allowable level of turbidity in water is 0.5 NTU, while the recommended level is about 0.1 NTU. (NTU, or TU, stands for nephelometric turbidity units, a measurement of the turbidity of water.)


In addition to removing turbidity from the water, coagulation and flocculation is beneficial in other ways. 


The process removes many bacteria which are suspended in the water and can be used to remove color from the water.


Turbidity and color are much more common in surface water than in groundwater.


As surface water flows over the ground to streams, through streams, and then through rivers, the water picks up a large quantity of particles. 


As a result, while aeration is more commonly required for groundwater, treatment involving coagulation and flocculation is typical of surface water.




Three Steps


As I mentioned above, the chemistry of coagulation/flocculation consists of three processes - flash mix, coagulation, and flocculation. 


Each of these processes is briefly explained below. 


In the flash mixer, coagulant chemicals are added to the water and the water is mixed quickly and violently. 


The purpose of this step is to evenly distribute the chemicals through the water. 


Flash mixing typically lasts a minute or less. If the water is mixed for less than thirty seconds, then the chemicals will not be properly mixed into the water. 


However, if the water is mixed for more than sixty seconds, then the mixer blades will shear the newly forming floc back into small particles. 


After flash mixing, coagulation occurs. During coagulation, the coagulant chemicals neutralize the electrical charges of the fine particles in the water, allowing the particles to come closer together and form large clumps. 


You may already be familiar with the process of coagulation from cooking. 


You can see coagulation occurring when preparing gelatin (jello) or when cooking an egg white. 


The final step is flocculation. During flocculation, a process of gentle mixing brings the fine particles formed by coagulation into contact with each other. 


Flocculation typically lasts for about thirty to forty-five minutes. 


The flocculation basin often has a number of compartments with decreasing mixing speeds as the water advances through the basin. 


This compartmentalized chamber allows increasingly large floc to form without being broken apart by the mixing blades. 




Floc


The end product of a well-regulated coagulation/flocculation process is water in which the majority of the turbidity has been collected into floc, clumps of bacteria and particulate impurities that have come together and formed a cluster. 


The floc will then settle out in the sedimentation basin, with remaining floc being removed in the filter.


The best floc size is 0.1 to 3 mm. Larger floc does not settle as well and is more subject to breakup in the flocculation basin. Smaller floc also may not settle. 
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مُساهمةموضوع: رد: تصميم وتصنيع وتركيب وتوريد محطات معالجة الصرف الصناعى-لشركات انتاج الكيماويات والغازات الصناعية   الجمعة أكتوبر 03, 2014 2:14 am

Part 2: Chemistry


Introduction


Why do we need such a complex process to remove particles from water? 


Some particles would settle out of the water on their own, given enough time. 


But other particles would resist settling for days or months due to small particle size and to electrical charges between the particles. 


We will consider the chemical processes which prevent and aid settling below. 


But first, we will list the three types of objects which can be found in water. 


Particles in Water


There are three types of objects which can be found in water. In order from smallest to largest, these objects are chemicals in solution, colloidal solids, and suspended solids. 


Coagulation/flocculation will remove colloidal and suspended solids from water.


Chemicals in solution have been completely dissolved in the water. 


They are electrically charged and can interact with the water, so they are completely stable and will never settle out of the water. 


Chemicals in solution are not visible, either using the naked eye or using a microscope, and are less than 1 Mu in size. 


(A Mu, or millimicron, is equal to 0.000000039 inches.) An example of a chemical in solution is sugar in water. 


Colloidal solids, also known as nonsettleable solids, do not dissolve in water although they are electrically charged. 


Still, the particles are so small that they will not settle out of the water even after several years and they cannot be removed by filtration alone. 


Colloidal solids range between 1 and 500 Mu in size and can be seen only with a high-powered microscope. 


Examples include bacteria, fine clays, and silts. Colloidal solids often cause colored water, such as the "tea color" of swamp water. 


Finally, suspended, or settleable, solids will settle out of water over time, though this may be so slow that it is impractical to merely allow the particles to settle out in a water treatment plant. 


The particles are more than 1,000 Mu in size and can be seen with a microscope or, sometimes, with the naked eye. Examples of suspended solids include sand and heavy silts. 


Electrical Charges


The chemistry of coagulation and flocculation is primarily based on electricity. 


Electricity is the behavior of negative and positively charged particles due to their attraction and repulsion. 


Like charges (two negatively charged particles or two positively charged particles) repel each other while opposite charges (a positively charged particle and a negatively charged particle) attract. 


Negative charges make particles repel each other.


Negatively charged particles repel each other due to electricity.


Most particles dissolved in water have a negative charge, so they tend to repel each other. 


As a result, they stay dispersed and dissolved or colloidal in the water, as shown above.


The purpose of most coagulant chemicals is to neutralize the negative charges on the turbidity particles to prevent those particles from repelling each other. 


The amount of coagulant which should be added to the water will depend on the zeta potential, a measurement of the magnitude of electrical charge surrounding the colloidal particles. 


You can think of the zeta potential as the amount of repulsive force which keeps the particles in the water. 


If the zeta potential is large, then more coagulants will be needed. 


Coagulants tend to be positively charged. 


Due to their positive charge, they are attracted to the negative particles in the water, as shown below.


Coagulants attract to the particles in water.


Positively charged coagulants attract to negatively


charged particles due to electricity.


The combination of positive and negative charge results in a neutral, or lack, of charge. As a result, the particles no longer repel each other. 


The next force which will affect the particles is known as van der Waal's forces. Van der Waal's forces refer to the tendency of particles in nature to attract each other weakly if they have no charge. 


Van der Waal's forces cause the particles to drift together.


Neutrally charged particles attract due to van der Waal's forces.


Once the particles in water are not repelling each other, van der Waal's forces make the particles drift toward each other and join together into a group. 


When enough particles have joined together, they become floc and will settle out of the water.


Particles join together into floc.


Particles and coagulants join together into floc. 


Part3: Coagulant Chemicals


Types of Coagulants


Coagulant chemicals come in two main types - primary coagulants and coagulant aids. 


Primary coagulants neutralize the electrical charges of particles in the water which causes the particles to clump together. 


Coagulant aids add density to slow-settling flocs and add toughness to the flocs so that they will not break up during the mixing and settling processes. 


Primary coagulants are always used in the coagulation/flocculation process. Coagulant aids, in contrast, are not always required and are generally used to reduce flocculation time. 


Chemically, coagulant chemicals are either metallic salts (such as alum) or polymers. 


Polymers are man-made organic compounds made up of a long chain of smaller molecules. 


Polymers can be either cationic (positively charged), anionic (negatively charged), or nonionic (neutrally charged.) 


The table below shows many of the common coagulant chemicals and lists whether they are used as primary coagulants or as coagulant aids.


Different sources of water need different coagulants, but the most commonly used are alum and ferric sulfate.


Alum


There are a variety of primary coagulants which can be used in a water treatment plant. 


One of the earliest, and still the most extensively used, is aluminum sulfate, also known as alum. 


Alum can be bought in liquid form with a concentration of 8.3%, or in dry form with a concentration of 17%. When alum is added to water, it reacts with the water and results in positively charged ions. 




Coagulant Aids


Nearly all coagulant aids are very expensive, so care must be taken to use the proper amount of these chemicals. 


In many cases, coagulant aids are not required during the normal operation of the treatment plant, but are used during emergency treatment of water which has not been adequately treated in the flocculation and sedimentation basin. 


A couple of coagulant aids will be considered below. 


Lime is a coagulant aid used to increase the alkalinity of the water. 


The increase in alkalinity results in an increase in ions (electrically charged particles) in the water, some of which are positively charged. 


These positively charged particles attract the colloidal particles in the water, forming floc.


Bentonite is a type of clay used as a weighting agent in water high in color and low in turbidity and mineral content. 


This type of water usually would not form floc large enough to settle out of the water. 


The bentonite joins with the small floc, making the floc heavier and thus making it settle more quickly. 
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Types of suggested chemical for waste water chemical treatment


Aluminum Chloride Solution


Description:


Aluminum Chloride Solution is a concentrated metal salt solution ranging from 15-28% aluminum chloride. 


The aluminum concentration, expressed as Al2O3, is 10.5%.


Aluminum Chloride Solution is available in different product grades depending upon the application:


Flocculant Grade is used for wastewater treatment applications. 


This product grade is less concentrated than other grades of Aluminum Chloride Solution and may contain minor amounts of impurities that can alter visual appearance and odor.




Technical Grade is a full strength product of very good quality. 


It is suitable for almost all applications, except those where very low levels of iron are required. 


Technical Grade Aluminum Chloride Solution is available with NSF approval for drinking water treatment.


Water white Grade is a full strength product, similar to tech grade except for very low levels of iron. The iron (Fe) content of Water white grade is < 1%


Typical Applications and Benefits:


Aluminum Chloride Solution is an excellent source of Al3+ ions where the application demands a strong inorganic cationic metal salt.
________________________________________
Aluminum Chlorohydrate


Description:


Aluminum Chlorohydrate Solution (ACH) is a highly concentrated solution of polyaluminum hydroxychloride. 


It is characterized by having the highest aluminum concentration (23% Al2O3) of any commercially available aluminum based solution.


The basicity of ACH at 83% is also the highest available for any polyaluminum based solution. 


Basicity refers to the degree of acid neutralization and also represents a measure of how highly polymerized the aluminum in ACH is.


The highly polymerized aluminum species in ACH have much higher cationic charges than the aluminum in standard salts such as alum or aluminum chloride, and even other polyaluminum products. 


Therefore, ACH can offer both a higher level of performance and lower overall dosages.


The high degree of acid neutralization (basicity) also means that the effect on pH when applying ACH will be negligible. ACH also effectively coagulates over a broader pH range (as high as 9.5) versus traditional metal salts and lower basicity Pacl.








Ferric Chloride Solution


Description:


Ferric Chloride Solution is a concentrated mineral acid solution ranging from 30-45%ferric chloride.


Typical Applications and Benefits:


Ferric Chloride Solution is an excellent source of Fe3+ ions where the application demands a strong inorganic cationic metal salt.
________________________________________
Polyaluminum Chloride Solution


Description:


Polyaluminum Chloride Solution represents a series of products ranging in the degree of acid neutralization, polymerization and Al2O3 concentration.


As the acid is neutralized in the manufacturing process, the aluminum portion of the product becomes more polymerized, resulting in higher cationic charge and increased performance capabilities. The degree of acid neutralization is measured by basicity.


Basicity can range from 0% (aluminum chloride solution) to 83% (aluminum chlorohydrate solution). 


Typically available Polyaluminum Chloride solution products have basicities ranging from 10-70%.


Typical Applications and Benefits:


The Polyaluminum Chloride Solution product line offers a broad range of formulations that have unique performance characteristics when compared to the more conventional products like alum, aluminum chloride, ferric chloride, ferric sulfate, etc.




Organic Polymers


General Description:


Organic Polymers are used in a wide variety of municipal and industrial applications. Organic Coagulants are used to enhance the coagulation, flocculation and removal of impurities in water, many of which require NSF certification for use in potable water systems.


Use and Benefits in Water Treatment


Water soluble polymers, polyquatenary amines, polydadmacs, etc. are supplied in easy to use solution forms. 


They are highly efficient contributors of cationic charge and molecular weight when applied in specific applications. 


The process of coagulation is made highly efficient by the proper application of chemistry and dosage.


Organic Coagulants are used most efficiently in combination with inorganic coagulants such as polyaluminum chloride and other aluminum and iron salts. Depending on the specific chemistry of the target water, polymer use can vary from as little as 5% of the total coagulant dosage (inorganic + organic) to as much as 100% in cases where total organic use is indicated.
________________________________________
Ferrous Chloride Solution


Description:


Ferrous Chloride Solution is a concentrated mineral acid solution ranging from 22-30% ferrous chloride. The empirical formula is Fe2+ + 2Cl-.


Typical Applications and Benefits:


Ferrous Chloride Solution is an excellent source of Fe2+ ions where the application calls for an oxidizable inorganic metal salt.
________________________________________
Polyaluminum Chlorosulfate Solution


Description:


Polyaluminum Chlorosulfate Solution is a polymerized aluminum compound containing both chloride (Cl-) and sulfate (SO42-). The basicity (degree of acid neutralization) is 50%, resulting in only minimal impact on the pH of the receiving water.


The chemistry of this solution is such that it produces a very rapid forming and settling floc. PAC works very well in extreme conditions such as low temperature, low alkalinity, and physically challenged plants, where only a minimal amount of mixing and/or settling time is possible.


Polyaluminum Chlorosulfate Solution Product Line is NSF approved and meets AWWA standards for municipal and industrial drinking water applications.


Typical Applications and Benefits:




The Polyaluminum Chlorosulfate Solution product line offers a broad range of products that have unique performance characteristics when compared to the more conventional coagulants like alum, aluminum chloride, ferric chloride, ferric sulfate, etc. 


The applications where Polyaluminum Chlorosulfate Solution is often the product of choice are:


Municipal and Industrial Water Treatment


Polyaluminum Chlorosulfate Solution is often employed as the primary coagulant in potable water and industrial water treatment plants, replacing the need for other coagulants such as alum, and in many cases also eliminating or at least greatly reducing the need for pH adjustment chemicals, coagulant aids and filter aids. 


The benefits of this Polyaluminum Chlorosulfate Solution Product Line are most apparent when used in difficult treatment conditions; low temperature, low raw turbidities and low alkalinity, but can be effective in all types of waters.
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Factors Influencing Coagulation




Introduction




In a well-run water treatment plant, adjustments are often necessary in order to maximize the coagulation/flocculation process. 




These adjustments are a reaction to changes in the raw water entering the plant. 



Coagulation will be affected by changes in the water's pH, alkalinity, temperature, time, velocity and zeta potential.



The effectiveness of a coagulant is generally pH dependent. Water with a color will coagulate better at low pH (4.4-6) with alum.



Alkalinity is needed to provide anions, such as (OH) for forming insoluble compounds to precipitate them out. 



It could be naturally present in the water or needed to be added as hydroxides, carbonates, or bicarbonates. 



Generally 1 part alum uses 0.5 parts alkalinity for proper coagulation.



The higher the temperature, the faster the reaction, and the more effective is the coagulation. 



Winter temperature will slow down the reaction rate, which can be helped by an extended detention time. 



Mostly, it is naturally provided due to lower water demand in winter.



Time is an important factor as well. Proper mixing and detention times are very important to coagulation.



The higher velocity causes the shearing or breaking of floc particles, and lower velocity will let them settle in the flocculation basins. 



Velocity around 1 ft/sec in the flocculation basins should be maintained.



Zeta potential is the charge at the boundary of the colloidal turbidity particle and the surrounding water. 



The higher the charge the more is the repulsion between the turbidity particles, less the coagulation, and vice versa. 



Higher zeta potential requires the higher coagulant dose. An effective coagulation is aimed at reducing zeta potential charge to almost 0.



Coagulant



The proper type and concentration of coagulant are essential to the coagulation process. 



The coagulant choice will depend on the conditions at the plant. 



The concentration of coagulant also depends on the water conditions, and a jar test can be used to determine the correct concentration to use at any given time. 



Coagulants are usually fed into the water using a gravimetric feeder or a metering pump. A gravimetric feeder feeds dry chemicals into the water by weight. A metering pump feeds a wet solution (a liquid) into the water by pumping a volume of solution with each stroke or rotation. 



Improper coagulation related to coagulant may result from:




Using old chemicals



Using the wrong coagulant



Using the wrong concentration of coagulant. 



This may result from setting the wrong feed rate on the gravimetric feeder or metering pump or from a malfunction of the equipment.
The efficiency of the coagulation-flocculation process is dependent on many variables. For a particular water these may include:




§ Type of coagulant used




§ Coagulant dosage



§ Final pH



§ Coagulant feed concentration



§ Type and dosage of chemical additives other than primary coagulant (e.g. polymers)



§ Sequence of chemical addition and time lag between dosing points



§ Intensity and duration of mixing at rapid mix stage



§ Type of rapid mix device



§ Velocity gradients applied during flocculation stage



§ Flocculator retention time



§ Type of stirring device used



§ Flocculator geometry. 


 

 
 
                
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مُساهمةموضوع: العرض الفنى لمحطة معالجة الصرف الصناعى   الجمعة أكتوبر 03, 2014 2:19 am

So from the above parameter,we suggested the waste treatment steps to be compatable with environmental rules as 44/2000 and to be ready to go a head into (RO-UNIT) to achiving your parameters required for your operations
DESIGNTREATMENT-TYPENO.
open underground concrete Tank  with capacity of 400 cubic meters dimensions (3mitr high / 10 meter length / 10 m width) and is divided from the inside to the ten-lane width of each lane 1 meter and a height of two meters and ends filter of stainless steel with openings girth half to five micrometer to removal material dissolved with large and medium-sized particals and provides the tank number 4 slots out residual waste through pipes and pumps to pull the sludge to collection area
PRE-TREATMENT
1
A set of pumps to lift water from last collection point in the collection tank to tank  of chemical treatment
 
3pumps with the ability to withdraw the pump 60 cubic meters / hour to operate 1 basic  and 2 as reserves run
 
The metallic chemical processing tank cylinder from the top and conical from the bottom of the Vee capacity of 60 cubic meters provider with mixer for mixing chemicals, sewage and bottom of the barrel connector exit to exit sludge through 4 inches pipes across screw suction pump with ability of 20 cubic meters / hour
 
Preparation of treatment chemicals unit composed of a 3 tanks (2 tank of a polyethylene +1tank of stainless steel) capacity of reservoirs 2 cubic meter is mounted on each tank number 1 Mixer + pump injection Chemicals variable volume pump treatment chemicals (co-aggultant + flocullant + clarifiring) in the liquid state to chemical treatment tank
 
Number 2 pump drawing water treatment chemical processing tank to tank of biological treatment tank with ability to withdraw 60 cubic meters / hour and one key basic and the other backup as reserves run
CHEMICAL-TREATMENT
2
Unit for biological treatment system, ventilation and flotation with dissolved air capacity of 60 cubic meters with 2 pumping air from the bottom to the highest  with capacity of 60 bar with the addition of chemical active sludge media constituent of the 200 species of aerobic bacteria to get rid of groups of nitrate-sulfate-carbonate-phosphate-iron-manganese and ending parts of the pipe connected to Vee out sludge through pipes of 4-inch diameter connected to the suction screw pump with ability 20 meters/hour
 
Preparation Unit for materials of biological treatment of the chemical active sludge media in tank  with capacity of 2 cubic meter of polyethylene provider with mixer for flipping and chemical injection pump with flowmeter
 
A number of  2 pumps draw water treatment from biological treatment tank to tank of physical treatment with ability to withdraw 60 cubic meters / hour wherever one key  basic and the other backup as reserve run
SECONDARY-BIOLOGICAL TREATMENT
3
CPU physical depositional tank divided into two parts, the first system closets number 4 chambers flowing water where once from the top and once from the bottom to upset the water and then the second unit sedimentation 100 lamella plates oblique angle of 55-56 degrees and make the movement of water from 20-30 km / h and fitted from the bottom Vee parts connected to pipe out remnants of 4-inch diameter and pump suction ability residues 20 cubic meters / hour
 
 
PHYSICAL-TREATMENT
4
Unit for final Filteration consisting of a 3 Filters
 first filter Sandstone / gravel dimensions diameter 110 cm and height of 300 cm and then---
the second filter of active carbon to expel diameter 110 cm and height of 300 cm and then—
 the third filter of zeolite dimensions of 110 cm diameter and height of 300 cm
equipped with  automatic head unit  with ability 50 cubic meters / hour for entry and exit of  treated water  and provide with unit for backwash the filters
 
so the material  for manufacturing the filters made of galvanized iron
 
And provide with number of 4 pumps lifting capacity per 60 cubic meters / hour are placed as following
the first between the physical treatment tank and sand filter
the second between the sand filter and carbon filter
the third between carbon filter to  zeolite filter
the fourth between zeolite filter to  treated water tank
FILTERATION-TREATMENT
5
underground Concrete tank  for collection treated filterated water suitable to enter the R.O-UNIT.
concrete tank with ceramic have a volume of 200 cubic meters, 2 meters high dimensions / length of 10 meters / 10 meters width
TREATED WATER COLLECTING TANK
6
concrete Tank with capacity of 100 cubic meters divided into 2 meter underground and 1 meter above the ground to collect the sludge from all the reservoirs (the assembly first / chemical / biological / natural / backwash of filters) and post these processors are residues in the case of  35%liquid 
SLUDGE COLLECTING TANK
7
 
The schedual of equipments in the suggested plant
TREATMENT PURPOSEQUNT.ITEMNO.
PRETREATMENT,COLLECTIN FEED WATER TANK1CONCERETE TANK1
TREATED WATER COLLECTION TANK1CONCERETE TANK2
SLUDGE COLLECTION TANK1CONCERETE TANK3
CHEMICAL TREATMENT TANK1STEEL TANK4
BIOLOGICAL TREATMENT TANK1STEEL TANK5
PHYSICAL TREATMENT TANK1STEEL TANK6
CHEMICAL PREPERATION TANK FOR CHEMICAL TREATMENT2PLASTIC TANK7
CHEMICAL PREPERATION TANK FOR BIOLOGICAL TREATMENT1PLASTIC TANK8
CHEMICAL PREPERATION TANK FOR CHEMICAL TREATMENT1STAIN STEEL TANK9
3 FROM COLLECTION TANK TO CHEMICAL TANK.
2 FROM CHEMICAL TANK TO BIOLOGICAL TANK.
2 FROM BIOLOGICAL TANK TO PHYSICAL TANK.
1 FROM PHYSICAL TANK TO SAND FILTER.
1 FROM SAND FILTER TO  CARBON FILTER.
1 FROM CARBON FILTER TO ZEOLITE FILTER.
1 FROMZEOLITE FILTER TO TREATED WATER TANK.
11RAISING PUMPS10
2 FROM COLLECTION TANK
1 FROM CHEMICAL TANK
1 FROM PHYSICAL TANK
1 FROM BIOLOGICAL TANK
1 FROM SLUDGE TANK TO OUT OF PLANT
6SUCTION SCREW PUMPS11
3 FOR CHEMICAL PREPARATION
1 FOR BIOLOGICAL MEDIA PREPARATION
4CHEMICAL INJECTION PUMP12
1 FOR CHEMICAL TREATMENT TANK
3 FOR CHEMICAL PREPARATION TANKS
1 FOR BIOLOGICAL MEDIA PREPARATION TANK
5MIXERS13
PHYSICAL TREATMMENT TANK100 PLATESLAMELLAPLATES SHEET14
PRETREATMENT COLLECTION TANK10STAINSTEEL SCREEN FILTER PLATE15
FINAL FILTERATION MEDIA3STEEL FILTER16
FINAL FILTERATION MEDIA3AUTOMATIC HEAD FOR FILTER17
FINAL FILTERATION MEDIA3BACH WASH UNIT18
ALL LENGTH OF PLANT1STEEL BLADDER19
SURROUNDING ALL OF PLANT1STEEL WALL20
FOR ALL PLANT1AUTOMATIC ELECTRIC OPERATING UNIT21
 1 FOR CHEMICAL PREPARATION
2 FOR BIOLOGICAL TREATMENT
3AIR PUMP22
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مُساهمةموضوع: رد: تصميم وتصنيع وتركيب وتوريد محطات معالجة الصرف الصناعى-لشركات انتاج الكيماويات والغازات الصناعية   الجمعة أكتوبر 03, 2014 2:21 am

THE TREATED WATER ANALYSIS ACCORDING TO SUGGESTED WASTE WATER TREATMENT UNIT AND  EGYPTAIN ENVIROMENTAL RULES NO.44/2000
NORMAL(MG/L)
ITEM
NO.
600
BOD
1
1100
COD
2
6-9
PH
3
100
OIL&GREASE
4
43 C
TEMP.
5
800
TSS
6
8-15CM3/L
SED.DS
7
9000
TDS
8
-
PO4
9
25
TOTAL.POSPH.
10
-
NH3
11
-
NH2
12
-
F
13
10
SO4
14
100
NO3
15
-
IRON
17
1
NI
18
-
ZN
19
1
SIO2
20
5
TURBIDITY
21
6
CA
22
1
K
23
150
CO3
24
-
HCO3
25
-
MN
26
-
B
27
-
BA
28
5000
CL
29
4000
NA
30
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عدد المساهمات : 3443
تاريخ التسجيل : 15/09/2009
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الموقع : مصر

مُساهمةموضوع: رد: تصميم وتصنيع وتركيب وتوريد محطات معالجة الصرف الصناعى-لشركات انتاج الكيماويات والغازات الصناعية   الجمعة أكتوبر 03, 2014 2:23 am

Operating steps
 
Collect water inside the tank assembly first passage of water through the 10-lane gradual rises and traveling at 30 km / h on the degree 55-56 degree for pollutants large and medium-sized sedimentation and water remains inside the tank for 6 hours of deposition before moving to the next step
 
The pumps lift the water deposited from the top two thirds of the tank to pull part of 50 cubic meter to the chemical treatment tank


The mixer start to work at 400-600 rpm just the waste water inside the tank,so the first chemical (co aggultant=poly aluminum chloride) in liquid state is adding for 10 min at effective ph=4-5,so the ph will deacreasing from 12 to 4.5 to precipitate the large and medium moles directly to the bottom of tank.


So the second chemical ll adding which is (the floculltant=hydrated calcium hydroxide) in liquid phase is adding for 10 min too at effective ph=11,so the ph ll increasing from 4.5 to 11 to precipitate the small moles by collecting firstly at the surface of the water and at definite molecular weight ll precipitated to the bottom of the tank.


So the third chemical ll adding (the clarifiring=inionic polymer) in liquid phase for 10 min to moderate the ph =8.5-9 achieving the clear crystal for water and extra precipitation to the sludge in liquifing pase=35% as small cake
So we stop the mixer to achieving the high level of sedimentration to separating the clear water than the sludge cake


This small cake of sludge is sucking by sucking screw pump to the sludge collecting tank
So the third step ll start from raising the treated water from the chemical treatment tank to the biological tank to make the flotation by air in the presence of chemical active sludge media to breaking all of chemical group which remain without any reaction in the chemical treatment step,so that ll be taking 30 min.


After the end of aeration and flotation,the sludge ll sucking to the sludge collecting tank and the treated water ll raising to the forth step of treating=physical treatment step by movement the water with velocity-25-30 km/hrs through physical chamber one from the top and another time from the bottom,so go to the lamella plate sheet to decreasing velocity to 10-15km/hrs to make high precipitation to the water make our parameters at80-90% in low levels at normal 
values we need


So the sludge is sucking to the sludge collecting tank


After complete clearfing of water in physical treatment step the water is raising to the final filteration step which consistes of (sand/gravel/active carbon/zeolite) to adapted the ph and temp.,and cod,bod,complete removal of heavy metals and oil,grease,colloidal dissolved solids,odour and colour that ll achieving by bed depth of each media and good specification to make an extra-filteration,absorption and adsorption at retention time for passing the water inside the medias


The treated water is collecting in the treated water tank ready to go inside the R.O UNIT
The sludge is ready to treated to sucking and dewatring out side the unit or reused by your team in work shope again


The retention time of treating through the suggested waste water treatment plant for every 50 cubic meter of waste water=3 hrs treated in 4 steps of treatment methods


The treated water ll be=25-40 cubic meter of every 50 cubic meter achieving the total treated water=600-1000 cubic meter/1200 cubic meter /day


The suggested sludge in 35% liquid phase=10-25 cubic meter/50 cubic meter/hrs=200-600 cubic meter/1200cubic meter /day
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عدد المساهمات : 3443
تاريخ التسجيل : 15/09/2009
العمر : 49
الموقع : مصر

مُساهمةموضوع: رد: تصميم وتصنيع وتركيب وتوريد محطات معالجة الصرف الصناعى-لشركات انتاج الكيماويات والغازات الصناعية   الجمعة أكتوبر 03, 2014 2:26 am

ECONIMICAL QUOTATION
The schedual of equipments in the suggested plant
TREATMENT PURPOSE
QUNT.
ITEM/price
NO.
PRETREATMENT,COLLECTIN FEED WATER TANK
1
CONCERETE TANK
600000 eg.p
1
TREATED WATER COLLECTION TANK
1
CONCERETE TANK
300000 eg.p
2
SLUDGE COLLECTION TANK
1
CONCERETE TANK
150000 eg.p
3
CHEMICAL TREATMENT TANK
1
STEEL TANK
180000 eg.p
4
BIOLOGICAL TREATMENT TANK
1
STEEL TANK
180000 eg.p
5
PHYSICAL TREATMENT TANK
1
STEEL TANK
180000 eg.p
6
CHEMICAL PREPERATION TANK FOR CHEMICAL TREATMENT
2
PLASTIC TANK
6000 eg.p
7
CHEMICAL PREPERATION TANK FOR BIOLOGICAL TREATMENT
1
PLASTIC TANK
3000  eg.p
8
CHEMICAL PREPERATION TANK FOR CHEMICAL TREATMENT
1
STAIN STEEL TANK
20000 eg.p
9
3 FROM COLLECTION TANK TO CHEMICAL TANK.
2 FROM CHEMICAL TANK TO BIOLOGICAL TANK.
2 FROM BIOLOGICAL TANK TO PHYSICAL TANK.
1 FROM PHYSICAL TANK TO SAND FILTER.
1 FROM SAND FILTER TO  CARBON FILTER.
1 FROM CARBON FILTER TO ZEOLITE FILTER.
1 FROMZEOLITE FILTER TO TREATED WATER TANK.
11
RAISING PUMPS
440000 eg.p
10
2 FROM COLLECTION TANK
1 FROM CHEMICAL TANK
1 FROM PHYSICAL TANK
1 FROM BIOLOGICAL TANK
1 FROM SLUDGE TANK TO OUT OF PLANT
6
SUCTION SCREW PUMPS
360000 eg.p
11
3 FOR CHEMICAL PREPARATION
1 FOR BIOLOGICAL MEDIA PREPARATION
4
CHEMICAL INJECTION PUMP
48000 eg.p
12
1 FOR CHEMICAL TREATMENT TANK
3 FOR CHEMICAL PREPARATION TANKS
1 FOR BIOLOGICAL MEDIA PREPARATION TANK
5
MIXERS
80000 eg.p
13
PHYSICAL TREATMMENT TANK
100 PLATES
LAMELLAPLATES SHEET
150000 eg.p
14
PRETREATMENT COLLECTION TANK
10
STAINSTEEL SCREEN FILTER PLATE
50000 eg.p
15
FINAL FILTERATION MEDIA
3
STEEL FILTER
150000 eg.p
16
FINAL FILTERATION MEDIA
3
AUTOMATIC HEAD FOR FILTER
150000 eg.p
17
FINAL FILTERATION MEDIA
3
BACH WASH UNIT
45000 eg.p
18
ALL LENGTH OF PLANT
1
STEEL BLADDER
60000 eg.p
19
SURROUNDING ALL OF PLANT
1
STEEL WALL
90000 eg.p
20
FOR ALL PLANT
1
AUTOMATIC ELECTRIC OPERATING UNIT
125000 eg.p
21
1 FOR CHEMICAL PREPARATION
2 FOR BIOLOGICAL TREATMENT
3
AIR PUMP
180000 EG.P
22
THE TOTAL COST
 
ELECTRO-MECHANIC
2,347,000 EG.P
STEEL-STRUCTURE
150000 EG.P
CIVIL-STRUCTURE
1,050,000 EG.P
23
 
THE PRICE UNINCLUDING SALES TAXES
ORIGIN OF ELECTROMECHANIC=EUROPIAN
PAYMENT-ORDER
50% ADVANCED AT CONTRACT SIGN
25% AT EQUIPMENT DELIVERY AT PROJECT LOCATION
25% AFTER DELIVERY,ERECTION,WORKING OF PLANT
VALIDITY
30 DAYS
THE TOTAL COST OF CHEMICALS/YEAR
253200 EG.P/YEAR
THE TYPES OF CHEMICALS FOR CHEMICAL&BIOLOGICAL TREATMENT
PURPOSE
QTY.
ITEM
NO.
AGGULTANT
POLY ALUMIN.CLORIDE
1
FLOCULTANT
HYDRATED CALCIUM HYDROXIDE
2
CLAFIRING
ANIONIC POLY ACRYLAMIDE
3
BOILOGICAL ACTIVE MEDIA
ACTIVE SLUDGE MEDIA
4
 
THE TOTAL COST OF MEDIA / 3 YEARS
 EG.P/3YEARS
THE TYPES OF FILTER MEDIA

BED DEPTH
QTY.
ITEM
NO.
200 CM
SAND FILTER
1
220 CM
ACTIVA CARBON FILTER
2
200 CM
ZEOLITE FILTER
3
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