电-生物体系的运行方式对二氯酚还原降解的影响  

Influences of electro-assisted microbial system operation mode on the reduction and degradation of 2,4-dichlorophenol

作　　者：张景丽[1,2] 李畅[1] 程方[1,2] 胡保安 李毓[1,2] 

机构地区：[1]天津城建大学环境与市政工程学院,天津300384 [2]天津城市建设学院天津市水质科学与技术重点实验室,天津300384 [3]中交天航环保工程有限公司,天津300451

出　　处：《工业水处理》2016年第8期32-35,共4页Industrial Water Treatment

基　　金：国家自然科学基金(51078265);建设部研究开发项目(2014-K7-004)

摘　　要：废水中较高浓度的2,4-二氯酚(2,4-DCP)以溶解态和胶体2种形态存在。研究了间歇式电辅助微生物体系(IEMS)和连续式电辅助微生物体系(CEMS)对较高浓度2,4-DCP的还原降解效果。结果表明CEMS对溶解性2,4-DCP的降解符合零级反应动力学特征,动力学常数为0.245 h-1,对2,4-DCP降解中间产物邻氯酚(2-CP)和对氯酚(4-CP)的降解也为零级反应,动力学常数分别为0.048、0.081 5 h-1。IEMS在停止电辅助期间对胶体态2,4-DCP的水解效率远高于CEMS,2个体系均为零级反应,动力学常数分别为0.083 4、0.027 1 h-1。较高浓度的2,4-DCP宜采用IEMS处理。2,4-dichlorophenol（2,4-DCP） having higher concentration in wastewater exists in two states ： dissolved and colloidal. The reduction and degradation effects of 2,4-DCP having higher concentration treated by an intermittent electro-assisted microbial system （IEMS）and a continuous electro-assisted microbial system （CEMS） have been studied. The results show that the degradation of the dissolved 2,4-DCP treated by the CEMS conforms to the zeroorder kinetic characteristics and the kinetic constants is 0.245 h^-1. For 2,4-DCP degraded intermediate products 2-CP and 4-CP,the degradation are also zero-order reaction. The kinetic constants are 0.048 h^-1 and 0.081 5 h^-1, respectively. The hydrolysis efficiency of colloidal 2,4-DCP, while IEMS stops having electric auxiliary, is much higher than that of CEMS. The two systems are both zero-order reaction. The kinetic constants are 0.083 4 h^-1 and 0.027 1 h^-1, respectively.It is suitable for 2,4-DCP having higher concentration to be treated by IEMS.

关 键 词：连续式电辅助微生物体系 间歇式电辅助微生物体系 2 4-二氯酚 

分 类 号：X703[环境科学与工程—环境工程]