Abstract
The most important steps in water treatment plants are coagulation and flocculation. Various researches have been done about the best coagulant for water treatment. The present study is aimed to the performance of polymeric coagulants (including: poly aluminum chloride, poly ferric sulfate and poly aluminum ferrous sulfate and minerals coagulants (e.g. ferric chloride and alum) on clot formation, turbidity and organic material removal. Aluminum ferrous chloride has been used for the first time in Iran for water treatment. The total poly ferric sulfate showed a better performance among all coagulants tested for turbidity removal and organic carbon.
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