Continuous flow electrocoagulation in the treatment of wastewater from dairy industries

被引：33

作者：

Benazzi, Toni L. ^{[1
,2
]}

Di Luccio, Marco ^{[3
]}

Dallago, Rogerio M. ^{[1
]}

Steffens, Juliana ^{[1
]}

Mores, Rubia ^{[1
]}

Do Nascimento, Mariele S. ^{[1
]}

Krebs, Jociane ^{[1
]}

Ceni, Gustavo ^{[1
]}

机构：

[1] URI Erechim, Dept Sci Agrarian, BR-99700000 Erechim, RS, Brazil

[2] Fed Inst Educ Sci & Technol Rio Grande Sul, Campus Erechim, BR-99700000 Erechim, RS, Brazil

[3] Univ Fed Santa Catarina, Dept Chem Engn, BR-88040900 Florianopolis, SC, Brazil

来源：

WATER SCIENCE AND TECHNOLOGY | 2016年 / 73卷 / 06期

关键词：

aluminum electrodes; dairy wastewater; electrocoagulation; flow continuous reactor; hydraulic residence time; ELECTROCHEMICAL TREATMENT; REMOVAL; EFFLUENT; NANOFILTRATION; ELECTRODES; REUSE; AL;

D O I：

10.2166/wst.2015.620

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Dairy industry wastewater contains high levels of organic matter, consisting mainly of fat, protein and products of their partial microbial decomposition. In the present study, the use of continuous electrocoagulation is proposed for the primary treatment of dairy wastewater. The electrochemical treatment was carried out in a continuous flow cell with aluminum electrodes. The influence of the voltage, the distance between the electrodes and the hydraulic residence time (HRT) on the process performance was assessed, by measuring the removal of color, turbidity, total organic carbon (TOC) and chemical oxygen demand (COD). The optimum voltage, distance between the electrodes and HRT were 10 V, 1 cm and 90 min, respectively, yielding a current density of 13.3 A.m(-2). Under these conditions, removal of color, turbidity, TOC and COD were 94%, 93%, 65% and 69%, respectively, after a steady state was reached in the continuous flow reactor.

引用

页码：1418 / 1425

页数：8

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