Title: Comparison of two inorganic-organic composite coagulants in treating reservoir raw water from the Yellow River
Abstract:Two inorganic-organic composite coagulants PFC-PDMDAAC and PAC-PDMDAAC with series of Fe(Al)/PDMDAAC mass ratios were prepared for treatment of summer reservoir raw water from the Yellow River.The inf...Two inorganic-organic composite coagulants PFC-PDMDAAC and PAC-PDMDAAC with series of Fe(Al)/PDMDAAC mass ratios were prepared for treatment of summer reservoir raw water from the Yellow River.The influence of Fe(Al)/PDMDAAC mass ratios,dosage,pH and dosing order on coagulation effect(turbidity,organic matter and chlorophyll-a removal) was investigated.The coagulation mechanism of the two coagulants was analyzed by the variation of Zeta potential during coagulation processes.The composite coagulants performed better than using them as dual-coagulants.The coagulation effects of both composite coagulants were greatly impacted by the mass ratio of Fe(Al)/PDMDAAC.The best coagulation effects were obtained when Fe(Al)/PDMDAAC mass ratio was 4:1with the dosage of 4mg/L.The composite coagulants could give excellent coagulation effect in the pH range from 5.0to 8.0,which is much wider than the inorganic coagulants.In comparison of PFC-PDMDAAC,PAC-PDMDAAC gave better turbidity and chlorophyll-a removal and worse organic matter removal.Read More
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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