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Register a new userComparison Study of Alum and Coagulants (Ferric Chloride, and Poly Aluminum Chloride (PACL)) on Turbidity Elimination in Water Stations
مقارنة الشب و بدائل التخثير (كلوريد الحديديك و كلوريد الألمنيوم المتعدد (PACL)) في إزالة العكارة في محطات إسالة الماء
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المجلة السورية للبحوث الزراعية ورقة بحثية
Publication date
2018
fields
Soil And Water
and research's language is
العربية
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ركّز البحث على إحدى مراحل المعالجة المستخدمة في محطات التصفية، و هي عملية التخثير Coagulation)). تناول البحث استخدام بدائل للشب ( كلوريد الحديديك و بولي كلوريد الألمنيوم (PACl)) التي تؤدي إلى خفض عكارة الماء، من خلال إزاحة المواد الغروية، التي تشمل المواد العضوية و غير العضوية، و بالتالي زيادة في كفاءة التعقيم، و التخلص من المؤثرات الجانبية (DBPS)، و كذلك التقليل من مشاكل انسداد المرشحات الرملية في محطات التصفية، الناتج عن زيادة عكارة الماء الداخلة إليها. استخدمت ثلاث أنواع من المخثرات لأغراض المقارنة، للوصول إلى أفضل معالجة في عمليات تقليل عكارة الماء ضمن عملية التخثير. تمّ استخدام تجربة فحص الجرة (Jar-test ) لهذا الغرض، باستخدام تراكيز مختلفة من المخثرات لنموذج من مياه السقي اعتماداً على سلسلة من التجارب. بيّنت النتائج أنّ البولي كلوريد الألمنيوم قد أعطى أعلى كفاءة خفض للعكارة و بنسب (85.5، و83.7 و83.1 %) و ذلك بحسب التراكيز المضافة في عملية التخثير (5 مغ/لتر، و10 مغ/لتر، و20 مغ/لتر) على التوالي، مقارنةً بكلوريد الحديديك و الشب اللذين أعطيا نسب خفض للعكارة (78.1، 78.2 و79%) و (56، و54، و58%) على التوالي، و كان لعوامل الحامضية، و زمن الترسيب و عمليات الخلط تأثير مباشر على نتائج التجارب.
This research focused on one of the stages of the conventional treatment of water in the purification stations, a process of coagulation, which enhanced by using alternatives to alum; such as Ferric Chloride and Poly Aluminum-chloride (PACl), which play an important role to reducing the turbidity of drinking water through the destabilization of colloids, which include organic and inorganic materials in order to increase the efficiency of sterilization and disposal of the side effects of sterilization (DBPS) and to minimize the problems of clogged sand filters due to an increase of the turbidity of water inside it. According to that, three types of coagulant agents were used for the purpose of comparison with each other to achieve the best efficiency in the process of reducing water turbidity through a process of coagulation improved by using (Jar-test). Different concentrations of coagulant agents of irrigation water were used depending on experiments. The results found that urinary chloride aluminum gave the highest efficiency in reducing turbidity by (84, 82 and 81%) according to the addition of concentration for coagulation (20 ppm, 10 ppm and 5ppm), respectively. The reduction rates in turbidity for Ferric chloride were (79, 78.2 and 78.1% ) by concentrations added, respectively, but for alum, the reduction rates in turbidity were (58, 56, and, 54%) by concentrations added, respectively.
References used
Ayni, A. (2009). Soft water, Newspaper “AL MAMLKA’’ http://www.eyoon.com> .Conley W.R.; and R.H. Evers (1968) “Coagulation Control” J. AWWA. 60 (12): 167-178
Andreas, N.; I. Angelaki; and S.A. Snyder ( 2015). Wastewater treatment and reuse: Past, Present,water and Future, 7, 4887-4895; doi:10.3390/w7094887
APHA, (1985). “Standard Methods of Water and Wastewater Examination” 18th Edition American Public Health Association. Washington. p.123
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controlled. This search aims to determine the suitability of
dosing AL2(SO4)3·18 H2O, ,FeSO4.7H2O with the intention of
reducing turbidity levels to acceptable limits .
In the present study , a series of jar test was conducted to
evaluate the optimum pH, dosage and performance parameters
for coagulants,.We studied the effect of AL2(SO4)3·18 H2O,
,FeSO4.7H2O dosage on reducing of turbidity, The influence of
pH on turbidity reducing , and the effect of slow mixing time
on turbidity .
And turbidity reducing by AL2(SO4)3·18 H2O was removed 96
% of the total turbidity.
And turbiditu reducing by FeSO4.7H2O was removed 98 % of
the total turbidity.
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Separation of acetone, can be explained qualitatively but not quantitatively.
Its mechanism and the molecular and ionic constructions can not be fully
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