Effect of aging period on the characteristics and coagulation behavior of polyferric chloride and polyferric chloride-polyamine composite coagulant for synthetic dying wastewater treatment

被引：54

作者：

Gao, Baoyu ^{[1
]}

Liu, Bin ^{[1
]}

Chen, Ting ^{[1
]}

Yue, Qinyan ^{[1
]}

机构：

[1] Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Water Pollut Control & Resource, Jinan 250100, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2011年 / 187卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

Aging period; Composite coagulant; Polyferric chloride; Epichlorohydrin-dimethylamine; Dying wastewater; INORGANIC COAGULANTS; SURFACE-WATER; FLOCCULATION; ALUMINUM; SULFATE; IRON; HYDROLYSIS; CHEMISTRY; REMOVAL;

D O I：

10.1016/j.jhazmat.2011.01.044

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this paper, a new composite inorganic-organic coagulant (PFC-EPI-DMA) was prepared by polyferric chloride (PFC) and epichlorohydrin-dimethylamine (EPI-DMA) under a given EPI-DMA/Fe and OH/Fe molar ratio. In comparison with PFC. the Fe (III) species and zeta potential of PFC-EPI-DMA were measured. Then their coagulation performance and coagulation kinetics for treating synthetic reactive dying wastewater were investigated. The results showed that the content of Fe-a and Fe-b in PFC-EPI-DMA and PR: coagulants decreased with increasing aging period. Compared to PFC. PFC-EPI-DMA had higher conteni of Fe-a but lower content of Fe-b and Fe-c. The zeta potentials of two coagulants decreased with increasing aging period within all tested pH range. For the treatment of reactive red 24, the color removal efficiency treated by PFC-EPI-DMA decreased, while that treated by PFC remained almost constant with increasing aging period. However, the color removal efficiencies of reactive blue 14 treated by two coagulants both decreased with increasing aging period. The results of floc aggregation process confirmed that with increasing aging period, the orders of floc growth rate, ratio and TWV treated by two coagulants were complicated. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：413 / 420

页数：8

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