摘要
以河北某印染企业的生产废水为研究对象,采用电催化-生化组合工艺探索了印染废水处理及回用技术。通过实验优化了电催化预处理工艺:槽电压3V,处理时长60min,有效电极工作面积与处理废水体积数值之比为1∶6时,废水的CODCr去除率达44.8%。以该工艺对印染废水预处理,可将BOD5与CODCr之比由0.27提高到0.48,使其生化性显著提高。再配合活性污泥(SBR)生化法进行深度降解后,出水水质可达循环冷却水水质要求,可直接作为循环冷却水回用,实现印染废水零排放。
The wastewater from a printing and dyeing plant in Hebei province was treated by a combined electrocatalytic and biochemical process. The optimal treatment was attained under the following conditions： the wastewater was first treated by electro-catalytic oxidation with a voltage of 3 V, reaction time of 60 min and ratio of effective working area to volume of 1：6 giving 44. 8% CODcr removal . In this process, the value of BOD5/CODcr was increased from 0.27 to 0.48 and the biodegradability of the treated wastewater was greatly improved. After acti- vated sludge treatment, the treated wastewater can be directly used as cooling water resulting in zero discharge of wastewater.
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第2期13-17,共5页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
基金
国家"863"计划(2009AA03Z802)
关键词
电催化
生化处理
零排放
electro-catalytic method
biochemical treatment
zero-discharge
