2004•PubMedRequires access

[Removal of turbidity and effect of humic acid in flocculation by polyferric chloride].

Hongyu Wang, Huazhang Zhao, Zhaokun Luan, Weiping Liu

Abstract

The removals of humic acid and turbidity by polyferric chloride under different coagulation conditions were studied (pH = 4, 7, 10). Zeta potential, turbidity and humic acid removal efficiency were analyzed. Experimental results showed that the dosage and scope of polyferric chloride (PFC) is the narrowest and the residual turbidity is biggest when pH = 4, the dosage and scope of PFC is the broadest and the residual turbidity is the least when pH = 10; Fe(III) can complex with humic acid under acidic condition; The effect of flocculation is not influenced by the presence of humic acid.

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Key concepts: Turbidity, Humic acid, Flocculation, Chemistry, Coagulation, Chloride, Environmental chemistry, Turbidite