Integration of US/Fe2+ and photo-Fenton in sequencing for degradation of landfill leachate

被引：12
|
作者：
Zha, F. G. [1 ]
Yao, D. X. [1 ]
Hu, Y. B. [1 ]
Gao, L. M. [1 ]
Wang, X. M. [1 ]
机构：
[1] Anhui Univ Sci & Technol, Sch Earth & Environm, Huainan 232001, Anhui, Peoples R China
来源：
WATER SCIENCE AND TECHNOLOGY | 2016年 / 73卷 / 02期
关键词：
GC-MS; landfill leachate; mineralization; photo-Fenton; sonication; ADVANCED OXIDATION PROCESSES; GENERATED HYDROGEN-PEROXIDE; WASTE-WATER; UV-LIGHT; TOXICITY; US;
D O I：
10.2166/wst.2015.487
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The landfill leachate treated by sonication in presence of Fe2+ (US/Fe2+) and then by photo-Fenton achieved the highest total organic carbon (TOC) removal efficiency among the screened processes. The lower initial pH, dosage of Fe2+ and initial concentration of leachate were helpful in raising TOC removal efficiency of leachate by US/Fe2+. The optimal conditions for the US-photo-Fenton process were as follows: initial pH at 3.0, [H2O2]/[TOC0] at 2, [H2O2]/[Fe2+] at 5 and initial concentration of landfill leachate at 600 mg/L. The removal efficiency of TOC, chemical oxygen demand (COD) and 5-day biochemical oxygen demand (BOD5) were 68.3, 79.6 and 58.2%, while the BOD5/COD rose from 0.20 to 0.43 at optimum condition. Based on gas chromatography-mass spectrometry (GC-MS) results, 36 of a total of 56 pollutants were completely degraded by US-photo-Fenton treatment.
引用
收藏
页码：260 / 266
页数：7
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