中文摘要：

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0．245h^-1。对2,4-DCP降解中间产物邻氯酚（2-CP）和时氯酚（4-CP）的降解也为零级反应，动力学常数分别为0．048、0．0815h^-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0．0834、0．0271h^-1。较高浓度的2，4-DCP宜采用IEMS处理。

英文摘要：

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.