硝酸盐还原条件下Fe^0/厌氧微生物联合体系降解2,4,6-三氯酚  

Degradation of 2,4,6-trichlorophenol by Integrated Microbial-Fe^0 Treatment System Under Nitrate-reducing Conditions

作　　者：高宝钗[1] 戴友芝[1] 胡克伟[1] 王辉[1] 贾明畅[1] 

机构地区：[1]湘潭大学环境工程系,湖南湘潭411105

出　　处：《微生物学通报》2010年第1期19-23,共5页Microbiology China

基　　金：国家自然科学基金项目(No20977072);国家"十一五"湘江水专项(No2009ZX07212-001-03)

摘　　要：本文采用间歇试验,对硝酸盐还原条件下Fe0/厌氧微生物联合体系降解2,4,6-三氯酚(2,4,6-TCP)进行了研究。考察了不同硝酸盐浓度下,体系中pH、硝酸盐浓度以及硝酸盐还原活性的变化情况。结果表明:当2,4,6-TCP初始浓度为20mg/L时,硝酸盐对Fe0/厌氧微生物联合体系降解2,4,6-三氯酚具有明显的抑制作用;且随着硝酸盐浓度的升高,2,4,6-TCP的去除率降低,硝酸盐还原活性升高;体系先发生硝酸盐还原再进行2,4,6-TCP还原脱氯。In this paper, a batch laboratory test was conducted to study the degradation of 2,4,6-trichlorophenol （2,4,6-TCP） using an integrated microbial-Fe^0 treatment system under nitrate-reducing conditions. The changes of pH, nitrate concentration, nitrate-reducing activity were detected under different nitrate concentrations. Results showed that the degradation of 2,4,6-trichlorophenol at an initial concentration of 20 mg/L was significantly inhibited under nitrate-reducing conditions. And 2,4,6-trichlorophenol removal efficiency declined and nitrate-reducing activity raised with the increase of initial nitrate concentration. Nitrate is reduced in this system followed by the reductive dechlorination of 2,4,6-trichlorophenol.

关 键 词：2 4 6-三氯酚 Fe^0 硝酸盐还原 厌氧微生物 

分 类 号：X703[环境科学与工程—环境工程] S63[农业科学—蔬菜学]