Improving Initial Filtrate Quality of Rapid Sand Filter
By Using Coagulants During backwash
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Need of water purification was realized by man in early stages of civilization. So, Central and State Government are making efforts to provide adequate and safe drinking water to the people by constructing water treatment plants in the country. Filtration process under goes degradation at initial and last phase which affect the initial effluent quality of filtrate after back washing. The rapid sand filter is important unit of water treatment plant which removes the flocs and colloids through filtration After backwash filter when rapid sand filter brought back in to normal operation high initia...
Need of water purification was realized by man in early stages of civilization. So, Central and State Government are making efforts to provide adequate and safe drinking water to the people by constructing water treatment plants in the country. Filtration process under goes degradation at initial and last phase which affect the initial effluent quality of filtrate after back washing. The rapid sand filter is important unit of water treatment plant which removes the flocs and colloids through filtration After backwash filter when rapid sand filter brought back in to normal operation high initial turbidity of filtrate is observed. It is in the form of turbidity spike. To reduce this turbidity spike filter conditioning is essential. The present study is for rapid sand filter conditioning using coagulants as alum and polymer in different percentage during backwash of rapid sand filter. The optimal dosage as well as corresponding points of application during backwash will be determined based on laboratory scale studies which found to be improved in initial effluent quality of rapid sand filter.
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