مجموعة تكنولاب البهاء جروب

تحاليل وتنقية ومعالجة المياه
 
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 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

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من انتاج شركة بريستول تو ايه 

بترخيص من مجموعة تكنولاب البهاء جروب


زيت فرامل وباكم

DOT3



شاطر | 
 

 Water Treatment Chemicals/كيماويات معالجة المياه

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عدد المساهمات : 3484
تاريخ التسجيل : 15/09/2009
العمر : 49
الموقع : مصر

مُساهمةموضوع: Water Treatment Chemicals/كيماويات معالجة المياه   الجمعة مارس 02, 2012 11:41 am


Water Treatment Chemicals

For the chemical treatment of water a great variety of chemicals can be applied.

Below, the different types of water treatment chemicals are summed up.

Algaecides

Antifoams

Biocides

Boiler water chemicals

Coagulants

Corrosion inhibitors

Disinfectants

Flocculants

Neutralizing agents

Oxidants

Oxygen scavengers

pH conditioners

Resin cleaners

Scale inhibitors

Algaecides

Algaecides are chemicals that kill algae and blue or green algae, when they are added to water. Examples are copper sulphate, iron salts, rosin amine salts and benzalkonium chloride. Algaecides are effective against algae, but are not very usable for algal blooms for environmental reasons.
The problem with most algaecides is that they kill all present algae, but they do not remove the toxins that are released by the algae prior to death.

Antifoams

Foam is a mass of bubbles created when certain types of gas are dispersed into a liquid. Strong films of liquid than surround the bubbles, forming large volumes of
non-productive foam.

The cause of foam is a complicated study in physical chemistry, but we already know that its existence presents serious problems in both the operation of industrial processes and the quality of finished products.

When it is not held under control, foam can reduce the capacity of equipment and increase the duration and costs of processes.


Antifoam blends contain oils combined with small amounts of silica.

They break down foam thanks to two of silicone's properties: incompatibility with aqueous systems and ease of spreading.

Antifoam compounds are available either as powder or as an emulsion of the pure product.

Powder
Antifoam powder covers a group of products based on modified polydimethylsiloxane. The products vary in their basic properties, but as a group they introduce excellent antifoaming in a wide range of applications and conditions.

The antifoams are chemically inert and do not react with the medium that is defoamed. They are odourless, tasteless, non-volatile, non-toxic and they do not corrode materials.

The only disadvantage of the powdery product is that it cannot be used in watery solutions.

Emulsions
Antifoam Emulsions are aqueous emulsions of polydimethylsiloxane fluids.

They have the same properties as the powder form, the only difference is that they can also be applied in watery solutions.

Biocides

disinfectants

Boiler water chemicals

Boiler water chemicals include all chemicals that are used for the following applications:

· Oxygen scavenging;

· Scale inhibition;

· Corrosion inhibition;

· Antifoaming;

· Alkalinity control.

Coagulants

When referring to coagulants, positive ions with high valence are preferred. Generally aluminium and iron are applied, aluminium as Al2(SO4)3- (aluin) and iron as either FeCl3 or Fe2(SO4)3-.

One can also apply the relatively cheap form FeSO4, on condition that it will be oxidised to Fe3+ during aeration.

Coagulation is very dependent on the doses of coagulants, the pH and colloid concentrations.

To adjust pH levels Ca(OH)2 is applied as co-flocculent. Doses usually vary between 10 and 90 mg Fe3+/ L, but when salts are present a higher dose needs to be applied.

Corrosion inhibitors

Corrosion is a general term that indicates the conversion of a metal into a soluble
compound.

Corrosion can lead to failure of critical parts of boiler systems, deposition of corrosion products in critical heat exchange areas, and overall efficiency loss.

That is why corrosion inhibitors are often applied.

Inhibitors are chemicals that react with a metallic surface, giving the surface a certain level of protection.

Inhibitors often work by adsorbing themselves on the metallic surface, protecting the metallic surface by forming a film.

There are five different kinds of corrosion inhibitors.

These are:

1) Passivity inhibitors (passivators).

These cause a shift of the corrosion potential, forcing the metallic surface into the passive range.

Examples of passivity inhibitors are oxidizing anions, such as chromate, nitrite and nitrate and non-oxidizing ions such as phosphate and molybdate.

These inhibitors are the most effective and consequently the most widely used.

2) Cathodic inhibitors.

Some cathodic inhibitors, such as compounds of arsenic and antimony, work by making the recombination and discharge of hydrogen more difficult.

Other cathodic inhibitors, ions such as calcium, zinc or magnesium, may be precipitated as oxides to form a protective layer on the metal.

3) Organic inhibitors.

These affect the entire surface of a corroding metal when present in certain concentration.

Organic inhibitors protect the metal by forming a hydrophobic film on the metal surface.

Organic inhibitors will be adsorbed according to the ionic charge of the inhibitor and the charge on the surface.


4) Precipitation inducing inhibitors.

These are compounds that cause the formation of precipitates on the surface of the metal, thereby providing a protective film.

The most common inhibitors of this category are silicates and phosphates.

5) Volatile Corrosion Inhibitors (VCI).

These are compounds transported in a closed environment to the site of corrosion by volatilisation from a source.

Examples are morpholine and hydrazine and volatile solids such as salts of dicyclohexylamine, cyclohexylamine and hexamethylene-amine.

On contact with the metal surface, the vapour of these salts condenses and is hydrolysed by moist, to liberate protective ions.

Disinfectants

Disinfectants kill present unwanted microrganisms in water.

There are various different types of disinfectants:

· Chlorine (dose 2-10 mg/L)

· Chlorine dioxide

· Ozone

· Hypochlorite


Chlorine dioxide disinfection

ClO2 is used principally as a primary disinfectant for surface waters with odor and taste problems.

It is an effective biocide at concentrations as low as 0.1 ppm and over a wide pH range.

ClO2 penetrates the bacterial cell wall and reacts with vital amino acids in the cytoplasm of the cell to kill the organisms.

The by-product of this reaction is chlorite.
Chlorine dioxide disinfects according to the same principle as chlorine, however, as opposed to chlorine, chlorine dioxide has no harmful effects on human health.

Hypochlorite disinfection

Hypochlorite is aplied in the same way as chlorine dioxide and chlorine. Hypo chlorination is a disinfection method that is not used widely anymore, since an environmental agency proved that the Hypochlorite for disinfection in water was the cause of bromate consistence in water.

Ozone disinfection

Ozone is a very strong oxidation medium, with a remarkably short life span.

It consists of oxygen molecules with an extra O-atom, to form O3.

When ozone comes in contact with odour, bacteria or viruses the extra O-atom breaks them down directly, by means of oxidation.

The third O-atom of the ozone molecules is than lost and only oxygen will remain.

Disinfectants can be used in various industries.

Ozone is used in the pharmaceutical industry, for drinking water preparation, for treatment of process water, for preparation of ultra-pure water and for surface disinfection.

Chlorine dioxide is used primarily for drinking water preparation and disinfection of piping.

Every disinfection technique has its specific advantages and its own application area.

In the table below some of the advantages and disadvantages are shown:

Technology Environmentally friendly Byproducts Effectivity Investment Operational costs Fluids Surfaces

Ozone

+


+


++


-


+


++


++
UV

++


++


+


+/-


++


+


++
Chlorine dioxide

+/-


+/-


++


++


+


++


--
Chlorine gas

--


--


-


+


++


+/-


--
Hypochlorite

--


--


-


+


++


+/-


--

Flocculants

To promote the formation of flocs in water that contains suspended solids polymer flocculants (polyelectrolytes) are applied to promote bonds formation between particles.

These polymers have a very specific effect, dependent upon their charges, their molar weight and their molecular degree of ramification.

The polymers are water-soluble and their molar weight varies between 105 and 106 g/ mol.

There can be several charges on one flocculent.

There are cationic polymers, based on nitrogen, anionic polymers, based on carboxylate ions and polyampholytes, which carry both positive and negative charges.

Neutralizing agents (alkalinity control)

In order to neutralize acids and basics we use either sodium hydroxide solution (NaOH), calcium carbonate, or lime suspension (Ca(OH)2) to increase pH levels.

We use diluted sulphuric acid (H2SO4) or diluted hydrochloric acid (HCl) to decline pH levels.

The dose of neutralizing agents depends upon the pH of the water in a reaction basin. Neutralization reactions cause a rise in temperature.

Oxidants

Chemical oxidation processes use (chemical) oxidants to reduce COD/BOD levels, and to remove both organic and oxidisable inorganic components.

The processes can completely oxidise organic materials to carbon dioxide and water, although it is often not necessary to operate the processes to this level of treatment

A wide variety of oxidation chemicals are available. Examples are:

· Hydrogen peroxide;

· Ozone;

· Combined ozone & peroxide;

· Oxygen.

Hydrogen peroxide

Hydrogen peroxide is widely used thanks to its properties; it is a safe, effective, powerful and versatile oxidant.

The main applications of H2O2 are oxidation to aid odour
control and corrosion control, organic oxidation, metal oxidation and toxicity oxidation.

The most difficult pollutants to oxidize may require H2O2 to be activated with catalysts such as iron, copper, manganese or other transition metal compounds.

Ozone
Ozone cannot only be applied as a disinfectant; it can also aid the removal of contaminants from water by means of oxidation.

Ozone then purifies water by breaking up organic contaminants and converting inorganic contaminants to an insoluble form that can then be filtered out.

The Ozone system can remove up to twenty-five contaminants.

Chemicals that can be oxidized with ozone are:

· Absorbable organic halogens;

· Nitrite;

· Iron;

· Manganese;

· Cyanide;

· Pesticides;

· Nitrogen oxides;

· Odorous substances;

· Chlorinated hydrocarbons;

· PCB's.



Oxygen

Oxygen can also be applied as an oxidant, for instance to realize the oxidation of iron and manganese.

The reactions that occur during oxidation by oxygen are usually quite similar.

These are the reactions of the oxidation of iron and manganese with oxygen:

2 Fe2+ + O2 + 2 OH- -> Fe2O3 + H2O
2 Mn2+ + O2 + 4 OH- -> 2 MnO2 + 2 H2O

Oxygen scavengers

Oxygen scavenging means preventing oxygen from introducing oxidation reactions.

Most of the naturally occurring organics have a slightly negative charge. Due to that they can absorb oxygen molecules, because these carry a slightly positive charge, to prevent oxidation reactions from taking place in water and other liquids.

Oxygen scavengers include both volatile products, such as hydrazine (N2H4) or other organic products like carbohydrazine, hydroquinone, diethylhydroxyethanol, methylethylketoxime, but also non-volatile salts, such as sodium sulphite (Na2SO3) and other inorganic compounds, or derivatives thereof.

The salts often contain catalysing compounds to increase the rate of reaction with dissolved oxygen, for instance cobalt chloride.

pH conditioners

Municipal water is often pH-adjusted, in order to prevent corrosion from pipes and to prevent dissolution of lead into water supplies.

During water treatment pH adjustments may also be required.

The pH is brought up or down through addition of basics or acids. An example of lowering the pH is the addition of hydrogen chloride, in case of a basic liquid. An example of bringing up the pH is the addition of natrium hydroxide, in case of an acidic liquid.

The pH will be converted to approximately seven to seven and a half, after addition of certain concentrations of acids or basics.

The concentration of the substance and the kind of substance that is added, depend upon the necessary decrease or increase of the pH.

Resin cleaners

Ion exchange resins need to be regenerated after application, after that, they can be reused. But every time the ion exchangers are used serious fouling takes place.

The contaminants that enter the resins will not be removed through regeneration; therefore resins need cleaning with certain chemicals.


Chemicals that are used are for instance sodium chloride, potassium chloride, citric acid and chlorine dioxide.


Chlorine dioxide cleansing serves the removal of organic contaminants on ion exchange resins. Prior to every cleaning treatment resins should be regenerated.

After that, in case chlorine dioxide is used, 500 ppm of chlorine dioxide in solution is passed through the resin bed and oxidises the contaminants.

Scale inhibitors

Scale is the precipitate that forms on surfaces in contact with water as a result of the precipitation of normally soluble solids that become insoluble as temperature increases.

Some examples of scale are calcium carbonate, calcium sulphate, and calcium silicate.
Scale inhibitors are surface-active negatively charged polymers.

As minerals exceed their solubility's and begin to merge, the polymers become attached. The structure for crystallisation is disrupted and the formation of scale is prevented.

The particles of scale combined with the inhibitor will than be dispersed and remain in suspension.

Examples of scale inhibitors are phosphate esters, phosphoric acid and solutions of low molecular weight polyacrylic acid.
[u]
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Water Treatment Chemicals/كيماويات معالجة المياه
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