Electrochemical removal of pollutants from agro-industry wastewaters

被引：117

作者：

Drogui, Patrick ^{[1
]}

Asselin, Melanie ^{[1
]}

Brar, Satinder K. ^{[1
]}

Benmoussa, Hamel ^{[2
]}

Blais, Jean-Francois ^{[1
]}

机构：

[1] Univ Quebec, INRS Eau Terre & Environm, Quebec City, PQ G1K 9A9, Canada

[2] CRIQ, Ste Foy, PQ G1P 4C7, Canada

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2008年 / 61卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

agro-industry wastewater; electrocoagulation; COD removal; aluminium; iron;

D O I：

10.1016/j.seppur.2007.10.013

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Electrocoagulation was investigated for the treatment of agro-industry wastewaters, namely, meat processing, cereal products, food beverages and abattoir. Initial studies were carried out to check the performance of each of the agro-industry wastewaters (in terms of COD removal). The total cost (including, electrical power consumed, chemicals and consumption of electrodes) of the treatment varied between $ 0.95 and 4.93 m(-3), Abattoir wastewater resulted in higher COD removal of 85-86%. Subsequent studies were performed in details on the selected abattoir wastewater. Bipolar mild steel electrode gave higher soluble COD removal (82%). Likewise, percent soluble COD removal as a function of pH and conductivity confirmed no need of acidification and electrolyte addition. The coupling of electrocoagulation with flocculation process resulted in effective removal of organics (82% total COD removal), inorganics (with the exception of nitrogen), pathogen destruction and solids and turbidity removal. Thus, electrocoagulation-flocculation process can be envisaged as an effective treatment process for decontamination of agro-industry wastewaters. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：301 / 310

页数：10

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