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Application of sewage sludge and intermittent aeration strategy to the bioremediation of DDT- and HCH-contaminated soil
Liang Qi; Lei Mei; Chen Tongbin; Yang Jun; Wan Xiaoming; Yang Sucai
KeywordSewage Sludge Bacteria Bacteriology Biodegradation Bioremediation Biotechnology Dechlorination Soil Pollution
Source PublicationJournal of Environmental Sciences (China)
2014
Volume26Issue:8Pages:1673-1680
AbstractAdding organic amendments to stimulate the biodegradation of pesticides is a subject of ongoing interest. The effect of sewage sludge on the bioremediation of dichlorodiphenyltrichloroethane (DDT) and hexachlorocyclohexane (HCH) contaminated soil was investigated in bench scale experiments, and intermittent aeration strategy was also used in this study to form an anaerobic-aerobic cycle. Bioremediation of DDT and HCH was enhanced with the addition of sewage sludge and the intermittent aeration. The removal rates of HCH and DDT were raised by 16.8%-80.8% in 10. days. Sewage sludge increased the organic carbon content from 6.2 to 218. g/kg, and it could also introduce efficient degradation microbes to soil, including Pseudomonas sp., Bacillus sp. and Sphingomonas sp. The unaerated phase enhanced the anaerobic dechlorination of DDT and HCH, and anaerobic removal rates of -HCH, o,p'-DDT and p,p'-DDT accounted for more than 50% of the total removal rates, but the content of -HCH declined more in the aerobic phase. 2014.
Indexed ByEI
Language英语
Document TypeEI期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/31309
Collection历年回溯文献
Recommended Citation
GB/T 7714
Liang Qi,Lei Mei,Chen Tongbin,et al. Application of sewage sludge and intermittent aeration strategy to the bioremediation of DDT- and HCH-contaminated soil. 2014.
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