Efficient COD reduction from sulfide minerals processing wastewater using Fenton process

被引：35

作者：

Meng, Xiangsong

Khoso, Sultan Ahmed

Wu, Jiangqiu

Tian, Mengjie

Kang, Jianhua

Liu, Hang

Zhang, Qingpeng

Sun, Wei

Hu, Yuehua

机构：

[1] Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China

[2] Cent S Univ, Key Lab Hunan Prov Clean & Efficient Utilizat Str, Changsha 410083, Hunan, Peoples R China

来源：

MINERALS ENGINEERING | 2019年 / 132卷

关键词：

COD; Minerals processing wastewater; Fenton process; DEGRADATION;

D O I：

10.1016/j.mineng.2018.11.054

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This paper presents an efficient COD reduction from sulfide minerals processing wastewater using Fenton process, and the COD of the tailings dam wastewater is largely reduced from 130 mg/L to 30 mg/L, so as to meet the emission limit (COD < 60 mg/L). The effects of multiple parameters influencing the Fenton process on COD of the concentrates wastewater, such as reaction time, reaction pH, and H2O2/Fe2+ molar ratio were evaluated in detail. The mechanism of COD reduction was investigated by equilibrium speciation modelling and total organic carbon (TOC) analysis. TOC analysis shows that it is difficult for the Fenton process to oxidize all of the organics in wastewater to CO2. Pilot-scale tests were further carried out to confirm the results of the laboratory tests.

引用

页码：110 / 112

页数：3

共 8 条

[1] Mature landfill leachate treatment by coagulation/flocculation combined with Fenton and solar photo-Fenton processes [J].