生物降解高氯酸盐的影响因素研究  

Study on the affecting factors of perchlorate biodegradation

作　　者：王倩[1,2] 郭延凯[1,2] 牛博贤 张媛媛[1,2] 张超[1,2] 冯皋 廉静[1,2] 杨景亮[1,2] 岳琳[1,2] 郭建博[1,2] 

机构地区：[1]河北科技大学环境科学与工程学院,河北石家庄050018 [2]河北省污染防治生物技术实验室,河北石家庄050018 [3]石家庄市环境保护局,河北石家庄050023

出　　处：《河北科技大学学报》2015年第6期652-658,共7页Journal of Hebei University of Science and Technology

基　　金：河北省应用基础研究计划项目(12966739D);河北省杰出青年基金(E2012208012);河北省高校百名优秀创新人才支持计划项目(BR2-211)

摘　　要：高氯酸盐的广泛应用带来了日益严峻的环境污染问题。从污水处理厂的活性污泥中富集有效降解ClO-4的微生物菌,通过批次实验考察影响高氯酸盐降解菌降解ClO-4过程中的多种因素,如温度、pH值、碳源、ClO-4浓度、硝酸盐、水溶性醌及非水溶性醌等。结果表明,在温度为30℃,pH值为7.5-8.5,CH3COO-质量浓度为2.4g/L时最适合ClO-4的降解。不同的NO-3浓度对菌群降解ClO-4的影响明显。ClO-4初始浓度越高,降解速率越快。筛选出了加速效果最好的水溶性醌AQDS,并且其最适投加量为1.44mmol/L。加速效果最好的非水溶性醌为1,5-二氯蒽醌,其最适投加量为0.090mmol/L。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 7.5-8.5and 2.4g/L acetate.Different NO-3concentrations 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 1.44mmol/L.The acceleration effects of 1,5-dichloroanthraquinone is best among non-dissolved quinone compounds,and the optimal concentration is 0.090mmol/L.

关 键 词：水污染防治工程 高氯酸盐 降解 醌介体 因素 

分 类 号：X703.1[环境科学与工程—环境工程]