Synergistic degradation of hospital wastewater by solar/TiO2/Fe2+/H2O2 process

被引：21

作者：

Kumar, S. Adish ^{[1
]}

Iekshmi, G. S. Sree ^{[1
]}

Banu, J. Rajesh ^{[1
]}

Yeom, I. Tae ^{[2
]}

机构：

[1] Anna Univ, Reg Ctr, Dept Civil Engn, Tirunelveli 627007, India

[2] Sungkyunkwan Univ, Dept Civil & Environm Engn, Suwon, South Korea

来源：

WATER QUALITY RESEARCH JOURNAL OF CANADA | 2014年 / 49卷 / 03期

关键词：

biodegradability; hospital wastewater; photo-catalysis; photo-Fenton; solar energy; synergetic effect; HETEROGENEOUS PHOTOCATALYSIS; HYDROGEN-PEROXIDE; FENTON; OXIDATION; REMOVAL; DECOLORIZATION; OPTIMIZATION; TIO2; ACID;

D O I：

10.2166/wqrjc.2014.026

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

Combined heterogeneous and homogenous photo-catalytic degradation of hospital wastewater was investigated. Three processes - solar/TiO2/H2O2, solar/Fe2+/H2O2 and solar/TiO2/Fe2+/H2O2 - were evaluated. The solar/TiO2/Fe2+/H2O2 process displayed increased efficiency due to the synergetic effect of homogeneous and heterogeneous photo-catalytic reaction. The combination increased the photo process efficiency by decreasing the reaction time of the separate operations and decreased the cost of treatment. The optimal conditions enabling over 99% reduction of chemical oxygen demand ( COD) were pH 7, 0.5 g/L Fe2+, 0.2 g/L TiO2 and 1.35 g/L H2O2. The effluent COD and total suspended solids concentrations were 20 and 30 mg/L, respectively, which met the discharge standard requirements.

引用

页码：223 / 233

页数：11

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