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 | 
 

 خطوات المعالجة الكيميائية الكهروميكلنيكية للاسطح المعدنية(النسخة الانجيليزية)

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


عدد المساهمات : 3492
تاريخ التسجيل : 15/09/2009
العمر : 49
الموقع : مصر

مُساهمةموضوع: خطوات المعالجة الكيميائية الكهروميكلنيكية للاسطح المعدنية(النسخة الانجيليزية)   الجمعة مايو 20, 2011 10:25 am

Chemical surface treatments can be grouped into four categories:
عقيد دكتور
بهاء بدر الدين محمود
استشارى كيميائى

• Pickling

- acids that remove impurities (including high temperature scale from welding or heat treatment) and etch the steel surface. 'Pickling' means some of the stainless steel surface is removed.

• Passivation

- oxidising acids or chemicals which remove impurities and enhance the chromium level on the surface.

• Chelating

agents are chemicals that can remove surface contaminants.

• Electropolishing

- electrochemical treatments that remove impurities and have the added beneficial effect of smoothing and brightening the surfaces.

• .
Pickling

Mixtures of hydrofluoric (HF) and nitric acid are the most common and are generally the most effective. Acids are available as a bath, a gel or a paste.
Commercially available mixtures contain up to about 25% nitric acid and 8% hydrofluoric acid. These chemicals etch the stainless steel which can roughen and dull the surface.

Care is required with all these chemicals because of both occupational health and safety and environmental considerations. HF is a Schedule 7 poison which has implications for sale or use in most states.

Passivation

Nitric acid is most commonly used for this purpose. Passivation treatments are available as a bath, a gel or a paste. Available formulations contain up to about 50% nitric acid and may also contain other oxidisers such as sodium dichromate. Used correctly, a nitric acid treatment should not affect the appearance of the steel although mirror polished surfaces should be tested first.

Passivation works by dissolving any carbon steel contamination from the surface of the stainless steel, and by dissolving out sulphide inclusions breaking the surface.

Nitric acid may also enrich the proportion of chromium at the surface - some chelants are also claimed to do this.

Pickling and passivation (L-R): before and after treatment of fuel tanks for storing helicopter fuel on ships. Photos courtesy of Alloy Engineers and MME Surface Finishing.

Chelants

Chelants have chemical 'claws' designed to selectively clean the surface.
The carboxylic acid group COOH is the basis for many chelants which are used in cleaners, water softening and lubricants. The pH and temperature must be correct for the chelant to do its job. Turbulent rinsing of pipes and vessels afterwards is important.

Cleaning by chelating agents tends to be based on proprietary knowledge and systems, and is less standardised than the other methods described.
The successful use of these systems needs to be established on a case by case basis.

Electropolishing

Most commonly phosphoric and sulphuric acids are used in conjunction with a high current density to clean and smooth (by metal removal) the surface of the steel.

The process preferentially attacks peaks and rounds valleys on the surface and raises the proportion of chromium at the surface.

The technique can have substantial effect on the appearance increasing lustre and brightness while only changing the measured roughness by about 30%.

Electropolishing of the example on the right effectively removed contamination including heat tint and smoothed the surface lifting lustre and reflectivity compared with the untreated example on the left.

Precautions

For chemical processes that etch the stainless steel, reaction times will increase with increasing grade.

More care is required with 'free machining' grades and these will usually require substantially less aggressive chemicals. The sulphur addition in these steels makes them readily attacked by chemical treatments. Care is also required when treating martensitic or low chromium ferritic stainless steels.

Detailed recommendations for each grade of stainless steel are given below.
The four categories of treatment are detailed in a number of Standards, but the most commonly used are:

• ASTM A380 Cleaning, Descaling and Passivation of Stainless Steel Parts, Equipment and Systems.

• ASTM A967 Chemical Passivation Treatments for Stainless Steel Parts.

• ASTM B912 Passivation of Stainless Steels using Electropolishing.

These very useful documents give detailed recommendations on many aspects of selection, application and evaluation of these treatments. Highly recommended reading.

Dirt and grease will mask the surface from treatments outlined above. Therefore, the steel surfaces must be free of these agents before applying chemical treatments.

Many of the chemical treatments described contain strong acids. Before disposal they will require neutralisation. Check with your local authority concerning the requirements for trade waste, neutralisation and disposal.

Many of the chemicals described above will be classified as hazardous substances under State OHS legislation, with implications for purchasing, transport, storage and handling.

Chemical treatments are useful tools in cost effectively achieving peak performance with stainless steels. With appropriate training, hazards associated with their use can be managed.
الرجوع الى أعلى الصفحة اذهب الى الأسفل
معاينة صفحة البيانات الشخصي للعضو http://technolabelbahaagp.googoolz.com
Admin
Admin


عدد المساهمات : 3492
تاريخ التسجيل : 15/09/2009
العمر : 49
الموقع : مصر

مُساهمةموضوع: المعالجة الكيميائية للاسطح المعدنية   الجمعة مايو 20, 2011 10:30 am

What is chemical treatment?

عقيد دكتور
بهاء بدر الدين محمود
استشارى كيميائى

Treatment by this method uses various chemicals to destabilize, de-emulsify, or absorb into the oil phase of a metal removal fluid, thereby allowing the water and oil phases to separate. Click for more details about the different methods of chemical treatment.


At a minimum, one storage tank, one processing tank, and one oil-sludge tank are necessary. A processing tank should be large enough to handle at least one average day of flow. If the system is being set up for continuous flow, a series of cascading tanks with at least a half- hour retention time per tank is necessary.


A small laboratory bench with a dedicated pH meter and calibrating buffer solutions, a magnetic stirring mixer, chemicals used within the process and pipettes for measuring chemical additions are all good to have on site.

Truck spill containment may be required for oil hauling pump-outs by a contract service.


What are the advantages and disadvantages of chemical treatment?
Advantages:

Energy consumption is low.


Diluted solutions are easier to separate.


Separation times can be very rapid (30 minutes).

Disadvantages:

Corrosive chemicals are required for use (sulfuric acid, sodium hydroxide).


Chemical treatment is very sensitive to changes in emulsifier (surfactant) chemistry.


Specialized instruments are required (pH meter).


Instruments require frequent calibration (pH meter).


Chemical changes and/or meter malfunctions can result in poor water quality without notice.


Balancing chemical reactions, at times, can be more an art than a science.


Synthetic fluids cannot be effectively treated by this method.


The basic concepts of this method are abstract and are not easily understood by persons without some chemistry background.


Methods of Chemical Treatment of Waste MRF

There are three basic methods:

1. Chemical splitting with polyvalent metastable salts
2. Chemical de-emulsification with polymers
3. Various combinations of #1 and #2 above

Treatment by polyvalent metastable salts

The typical metastable salts are:

Compound Type
Sodium Chloride monovalent cation
Calcium Chloride divalent cation
Magnesium Chloride divalent cation
Magnesium Sulfate divalent cation
Ferrous Sulfate divalent cation
Ferric Chloride trivalent cation
Aluminum Sulfate trivalent cation

The most common methods are:

1. Acid – alum – caustic split
2. Acid – calcium chloride – caustic split

Both of these methods use a salt, either alum (aluminum sulfate) or calcium chloride, to provide the necessary positive charges (aluminum with three positive charges per ion, as Al+++, or calcium with two positive charges per ion, as Ca++).


The concurrent addition of acid to a pH of 2.5 to 3.0 and one of the above salts helps to destabilize the emulsion. The most common and least expensive acid (per pound) to lower the pH to this level is sulfuric acid. This is due to the fact that most surfactant chemistry works best in the alkaline pH ranges of 8.0 to 13.0. The net amount of aluminum or calcium varies between 300 mg/L to 3,000 mg/L depending on the emulsion stability of the solution being treated.


After about 15 minutes of contact time with the acid and aluminum or calcium, the pH is raised (typically with sodium or calcium hydroxide) to somewhere between 5.5 and 8.5 depending on the surfactant chemistry present. If there is a sufficient amount of oil present, the resulting destabilized oil phase will gradually float, and a water-like phase will separate to the bottom.

MRF Effluent Characteristics After Sulfuric Acid, Aluminum Sulfate, Sodium Hydroxide

Chemical Method
BOD5 COD O&G pH
Fluid A 500 850 80 5.0
Fluid B 1,100 2,500 200 .5.2
Fluid C 2,000 6,500 500 5.5
Fluid D 1,200 20,000 250 5.0
Fluid E 1,500 22,000 240 5.3
Fluid F 120 28,000 110 6.0
All readings are in mg/L except pH, which is in standard units.
Treatment by Polymers

Polymers can contain metastable salts and/or complex proprietary organic chemistries that have a unique affinity for oil. The polymers draw the oil phases into their organic molecular structure, thus causing a separation. Careful polymer selection can result in very good oil separation, with very high oil/water density ratios. These oil water concentrations after polymer treatment can be as high as 80% (volume/volume).


With very stable emulsions, the addition of an acid, metastable salt, positively charged (cationic) polymer, sodium hydroxide, and a negatively charged polymer (anionic) in a series reaction may be required to produce any effective separation.


Some solutions with strong amounts of chelating compounds, such as sodium EDTA can be virtually impossible to treat by any chemical method.


Overall, these treatment methods can be done in a batch process or in a series reaction with cascading tanks, with each treatment stage in separate tanks. Separation can be enhanced with the use of fine micro-bubble air injected near the bottom of the final process tank. Dissolved air flotation is one common method to provide enhanced micro-bubble separation.


The chemical cost to treat by this method varies by the concentration of oil in the spent metal removal solution and / or the strength of the emulsifiers that are present. The chemical costs, for a 5% volume/volume spent metalworking solution can be between 0.6 and 1.2 cents per gallon. These costs can further vary by the type and amount of chelating chemistries present since they interfere with the precipitation and flocculation process.
الرجوع الى أعلى الصفحة اذهب الى الأسفل
معاينة صفحة البيانات الشخصي للعضو http://technolabelbahaagp.googoolz.com
 
خطوات المعالجة الكيميائية الكهروميكلنيكية للاسطح المعدنية(النسخة الانجيليزية)
استعرض الموضوع السابق استعرض الموضوع التالي الرجوع الى أعلى الصفحة 
صفحة 1 من اصل 1

صلاحيات هذا المنتدى:لاتستطيع الرد على المواضيع في هذا المنتدى
مجموعة تكنولاب البهاء جروب :: قسم معالجة وتنقية وتحاليل المياه :: المكتب الاستشارى العلمى-
انتقل الى: