Study on the affecting factors of perchlorate biodegradation

Journal of Hebei University of Science and Technology

Qian WANG¹  Yankai GUO¹  Yuanyuan ZHANG¹  Chao ZHANG¹  Jingliang YANG¹  Jing LIAN¹  Jianbo GUO¹  Lin YUE¹  Gao FENG¹  Boxian NIU² 

[1] School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, China;Shijiazhuang City Environmental Protection Bureau, Shijiazhuang, Hebei 050023, China;

关键词: water pollution control engineering;    perchlorate;    degradation;    quinone;    parameters;   

DOI  :  10.7535/hbkd.2015yx06016

来源: DOAJ

【 摘 要 】

The environmental pollution of perchlorate is more and more serious because of its widely usage. Several parameters affecting perchlorate degradation are examined through batch experiments by perchlorate-degrading bacteria, which include temperature, pH, the concentration of carbon source, ClO-4, NO-3, and water-soluble and water-insoluble quinone compounds. Perchlorate-degrading bacteria is collected and enriched from a sewage treatment plant. The results suggested that the optimal conditions for perchlorate biodegradation are 30 ℃, pH 7.5~8.5 and 2.4 g/L acetate. Different NO-3 concentrations have significant effect on perchlorate biodegradation. The higher the initial concentration of ClO-4, the faster the degradation rate. The acceleration effect of AQDS is the best among dissolved quinone compounds, and the optimal concentration is 1.44 mmol/L. The acceleration effects of 1,5-dichloroanthraquinone is best among non-dissolved quinone compounds, and the optimal concentration is 0.090 mmol/L.

【 授权许可】

Unknown