Performance evaluation of microfiltration with electrocoagulation and chemical coagulation pretreatment

被引：4

作者：

Sharma, G. ^{[1
]}

Shon, H. K. ^{[1
]}

Aryal, R. ^{[1
]}

Phuntsho, S. ^{[1
]}

机构：

[1] Univ Technol Sydney, Sch Civil & Environm Engn, Broadway, NSW 2007, Australia

来源：

DESALINATION AND WATER TREATMENT | 2011年 / 34卷 / 1-3期

基金：

澳大利亚研究理事会;

关键词：

Pretreatment; Crossflow; Electrocoagulation; Flux decline; Microfiltration; Zeta potential; CROSS-FLOW MICROFILTRATION; WASTE-WATER TREATMENT; ORGANIC-MATTER; MEMBRANES; FLOCCULATION; SUSPENSIONS; SEPARATION; REMOVAL;

D O I：

10.5004/dwt.2011.2882

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

One of the significant parameters to be considered for evaluating the process and economic viability of crosssflow microfiltration (MF) is flux stability. The MF economics are dependent on the flux decay through the membrane caused by membrane fouling. This work aims to evaluate the performance of MF by electro and chemical coagulation as pretreatments. The performance of MF was found to be sensitive to pH of feed solution, coagulant dosing and generation time. Acrylonitrile butadiene styrene (ABS) MF membrane of pore size 0.4 mu m was used in this study. Without pretreatment normalised flux declined by 94% after 160 min of MF operation using model wastewater. However with pretreatments, the MF flux was significantly improved. The optimum performance for MF with both electro and chemical coagulation pretreatments occurred at isoelectric point where the highest removal of organic and turbidity was observed. With chemical coagulation under optimum conditions (30 mg/l alum dose and pH 6.5), MF did not experience any flux decline. MF performed better with chemical coagulation compared to electrocoagulation (EC). Also organic matter removal was found to be more for chemical coagulation than for EC.

引用

页码：141 / 149

页数：9

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