Biodegradation of Polychlorinated Biphenyls Using a Moving-Bed Biofilm Reactor

被引：7

作者：

Dong, Bin ^{[1
]}

Chen, Han-Yu ^{[2
]}

Yang, Yang ^{[1
]}

He, Qun-biao ^{[1
]}

Dai, Xiao-Hu ^{[1
]}

机构：

[1] Tongji Univ, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China

[2] Henan Univ Technol, Sch Chem & Chem Engn, Zhengzhou 450001, Henan, Peoples R China

来源：

CLEAN-SOIL AIR WATER | 2015年 / 43卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Anaerobic microbial degradation; Dioxin-like PCB congeners; Membrane filtration; Metabolites; Wastewater treatment; COMMERCIAL PCB FORMULATIONS; SEDIMENT; DECHLORINATION; DEGRADATION; SOIL; GAS;

D O I：

10.1002/clen.201200623

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

As persistent organic pollutants, polychlorinated biphenyls (PCBs) are rarely degraded in nature environment. Biodegradation is an effective method for the removal of PCBs from contaminated wastewater. In this study, an assessment of the performance of a combined moving-bed biofilm reactor and a membrane filtration system (MBBR-MF) for the treatment of PCB-containing wastewater was performed. Simulated wastewater containing PCB77 was treated in an MBBR system. PCB removal efficiency was investigated at different sections of the combined MBBR-MF system. The results showed that the removal efficiencies for PCB77 in the anaerobic MBBR were 73 and 84.4% in the aerobic section. The possible biodegradation products were investigated. The results of gas chromatography-mass spectrometry indicate that the PCBs were converted into small molecules that were easily mineralized under aerobic conditions. Thus, the MBBR technology could have potential for biodegradation use of PCB-contaminated wastewater.

引用

页码：1078 / 1083

页数：6

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