Efficiency of a Pretreatment by Electrocoagulation with Aluminum Electrodes in a Nanofiltration Treatment of Polluted Water

被引：20

作者：

Ahmed, Mourad Taleb ^{[1
]}

Chaabane, Toufik ^{[1
]}

Maachi, Rachida ^{[1
]}

Darchen, Andre ^{[2
]}

机构：

[1] USTHB, FGM GP, Dept Environm, Algiers 16111, Algeria

[2] ENSCR, CNRS, UMR 6226, Sci Chim Rennes, F-35708 Rennes 7, France

来源：

ISWEE'11 | 2012年 / 33卷

关键词：

Pollution; Heavy metals; Bacteria; Lake Water; Hyphenated processes; SURFACE-WATER; FLUX DECLINE; MEMBRANES; COAGULATION; RETENTION; INDUSTRY; REMOVAL;

D O I：

10.1016/j.proeng.2012.01.1226

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The decrease of quality and availability of waters induces the research of hyphenated technologies for improving purification processes. The paper is devoted to the water treatment of a lack which accumulates a diversified pollution arising from a lot of industries. The investigated lack water contained heavy metals, fecal bacteria and high chemical pollution as measured by its chemical oxygen demand (COD). An electrocoagulation was applied as water pretreatment of a nanofiltration process. The electrocoagulation was carried out in a batch experiment with two parallel aluminum plates of 15 cm(2). Water analysis showed a decrease of the COD from 60 to 5 mg L-1, depending upon current density, current charge and solution pH. Thanks to electrocoagulation efficiency, the most probable number (MPN) of bacteria decreased from 2500 to 2 MPN/100 mL. This disinfection allowed the performing of a continuous coupling treatment of electrocoagulation and nanofiltration by using a cylindrical aluminum anode and an organic Nanomax50 membrane respectively. (C) 2012 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of ISWEE'11

引用

页码：465 / 474

页数：10

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