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⵵/ȣ 2000 / ȣ: V.12,no.2,Apr
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2(Ÿ) Optimal Conditions for Chemical Coagulation of Dyeing-Complex Wastewater
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ʷ For the effective treatment of dyeing-complex wastewater, the most effective chemical coagulation method was studied. For the chemical coagulation of dyeing-complex wastewater, polyferric sulfate, , PAC, ferrous sulfate, ferric sulfate, and lime were used. It was investigated that polyferric sulfate was the most efficient coagulant. The optimal conditions and results for polyferric sulfate include the followings. When initial concentration was 600mg/L, the optimal initial pH, dosage of coagulant, dosage of lime and PAA for removal efficiency were 5, 1,200mg/L, 500mg/L and lmg/L, respectively. The optimal dosage of polyferric sulfate was increased proportionally to the influent concentration.
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