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 | 
 

 الاس الهيدروجينى والاكسجين المذاب/PH/DISSOLVED OXYGEN

استعرض الموضوع السابق استعرض الموضوع التالي اذهب الى الأسفل 
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Admin
Admin


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

مُساهمةموضوع: الاس الهيدروجينى والاكسجين المذاب/PH/DISSOLVED OXYGEN   الجمعة مارس 16, 2012 1:21 pm

TECHNOLAB EL-BAHAA GROUP

GENERAL.DR

BAHAA BADR

pH

is a measure of how acidic or alkaline a solution is.

In pure water at room temperature, a small fraction (about two out of every billion) of the water molecules (H2O, or really, H-O-H) splits, or dissociates, spontaneously, into one positively charged hydrogen ion (H+) and one negatively charged hydroxide ion (OH-) each.

There is an equal number of each ion, so the water is said to be "neutral".

Some materials, when dissolved in water, will produce an excess of (H+), either because they contain these ions and release them when they dissolve, or because they react with the water and cause it to produce the extra hydrogen ions.

Substances which do this are called acids.

Likewise, some chemicals, called bases or alkalis, produce an excess of hydroxide ions.

The scale which is used to describe the concentration of acid or base is known as pH, for power or potential of the Hydrogen ion.

A pH of 7 is neutral. pH's above 7 are alkaline (basic); below 7, acidic.

The scale runs from about zero, which is very acidic, to fourteen, which is highly alkaline.

The scale is logarithmic, meaning that each change of one unit of pH represents a factor of 10 change in concentration of hydrogen ion.

So a solution which has a pH of 3 contains 10 times as many (H+) ions as the same volume of a solution with a pH of 4, 100 times as many as one with a pH of 5, a thousand times as many as one of pH6, and so on.

Some common materials and their approximate pH's are: Acids--- carbonated beverages, 2 to 4; lemon juice, about 2.3; vinegar,about 3; Bases: baking soda, 8.4; milk of magnesia.10.5; ammonia,11.7;lye,14 to 15.

While the pH measures the concentration of hydrogen or hydroxide ions, it may not measure the total amount of acid or base in the solution.

This is because most acids and bases do not dissociate completely in water.

That is, they only release a portion of their hydrogen or hydroxide ions.

A strong acid, like hydrochloric acid, HCl, releases essentially all of its H+ in water.

The concentration of H+ is the same as the total concentration of the acid.

A weak acid, like acetic acid (the acid in vinegar), may release only a few percent of the hydrogen that it has available.

If you are trying to neutralize an acid by adding a base, like sodium hydroxide, the amount you would need to neutralize a strong acid could be calculated directly from the pH of the acid solution.

But for a weak acid, the pH does not tell the whole story; the total amount of base needed would be a lot more.

This is because as the OH- from the base reacts with the H+ in solution to form water, more H+ will break loose from the undissociated portion of the acid to take its place.

The neutralization will not be complete until all of the weak acid has dissociated.

To measure the total acidity, also called base-neutralizing capacity (BNC) of a water sample, it has to be titrated with base.

That is, a solution of a base whose concentration is known must be added to the water sample slowly until the neutralization is complete.

By measuring the volume of the base added, you can figure out the original concentration of acid.

In a similar way, the acid-neutralizing capacity (ANC), or alkalinity of a water sample has to be determined by titrating it with a solution of a strong acid of known concentration.

For a more technical explanation of pH and alkalinity, look at this "mini-tutorial", which includes formulas, reactions, examples, and titration curves.

Significance: Although there are some microorganisms which can function at extreme pH's, most living things require pH's close to neutrality.

Many enzymes and other proteins are denatured by pH's which differ much from pH7, which disrupts the functioning of the organism and may kill it.

Besides the harm to aquatic life in natural waters, pH imbalances can inhibit-- or completely wipe out-- biological processes in wastewater treatment plants, resulting in incomplete treatment and pollution of the receiving waters.

Low (acidic) pH's also cause corrosion in sewers systems and increase the release of toxic and foul-smelling hydrogen sulfide gas.

(This gas has been responsible for the deaths of numerous sewer workers.)

Low pH's also increase the release of metals, some toxic, from soils and sediments.

Alkalinity is an important parameter because it measures the water's ability to resist acidification, for instance, to acid rain.

In wastewater treatment, some processes produce acidity.

If there is not enough alkalinity to neutralize it, the pH of the process can drop and cause it to become inhibited. Alkalinity can be supplemented by chemical addition to avoid this.

Measurement:

There are indicator solutions which change color in different pH ranges, and these can be used for approximate estimation of pH in solutions which contain high enough concentrations of pH-determining ions.

"pH paper",

impregnated with such indicators, are commonplace in testing laboratories.

For accurate measurements and use in dilute solutions, electrochemical measurement (a "pH meter") is required.

Alkalinity and acidity are determined by titration with strong base or acid, respectively, using either indicators or a pH meter to mark the endpoint.
---------------------------------------------------------------------------------------------------

Dissolved Oxygen (D.O.):

Like solids and liquids, gases can dissolve in water.

And, like solids and liquids, different gases vary greatly in their solubilities, i.e, how much can dissolve in water.

A solution containing the maximum concentration that the water can hold is said to be saturated. Oxygen gas, the element which exists in the form of O2 molecules, is not very water soluble.

A saturated solution at room temperature and normal pressure contains only about 9 parts per million of D.O. by weight ( 9 mg/L).

Lower temperatures or higher pressures increase the solubility, and visa versa.


Significance:

Dissolved oxygen is essential for fish to breathe.

Many microbial forms require it, as well.

The oxygen bound in the water molecule (H2O) is not available for this purpose, and is in the wrong "oxidation state", anyway.

The low solubility of oxygen in water means that it does not take much oxygen-consuming material to deplete the D.O.

As mentioned before, the biodegradation products of bacteria which do not require oxygen are foul-smelling, toxic, and/or flammable.

Sufficient D.O. is essential for the proper operation of many wastewater treatment processes. Activated sludge tanks often have their D.O. monitored continuously.

Low D.O.'s may be set to trigger an alarm or activate a control loop which will increase the supply of air to the tank.

Measurement:

D.O. can be measured by a fairly tricky wet chemical procedure known as the Winkler titration.

The D.O. is first trapped, or "fixed", as an orange-colored oxide of manganese.

This is then dissolved with sulfuric acid in the presence of iodide ion, which is converted to iodine by the oxidized manganese.

The iodine is titrated using standard sodium thiosulfate.

The original dissolved oxygen concentration is calculated from the volume of thiosulfate solution needed.

Measurements of D.O. can be made more conveniently with electrochemical instrumentation.

"D.O. meters" are subject to fewer interferences than the Winkler titration.

They are portable and can be calibrated directly by using the oxygen in the air.
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الاس الهيدروجينى والاكسجين المذاب/PH/DISSOLVED OXYGEN
استعرض الموضوع السابق استعرض الموضوع التالي الرجوع الى أعلى الصفحة 
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 مواضيع مماثلة
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» كمية الاكسجين الكيميائى/chemical oxygen demand/cod

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