煤化工废水的中水回用工艺技术改造  

Technological Transformation of Coal Chemical Wastewater Reuse Process

作　　者：王楠[1] 单明军[1,2] 曹文琳[1] 潘大伟[1] 

机构地区：[1]辽宁科技大学研究生院,辽宁鞍山114051 [2]北京万邦达环保技术股份有限公司,北京100875

出　　处：《中国给水排水》2016年第6期75-77,共3页China Water & Wastewater

摘　　要：某煤化工基地采用预处理(曝气生物滤池+砂滤池)组合双膜系统(UF+RO)深度处理煤化工废水达标排放水和生活污水,但预处理工艺去除COD、降低浊度效果不明显,增加了后续双膜系统运行负荷和运行费用。为此增设A/O-MBR处理系统,对部分预处理工艺出水进行分流处理。系统的总设计处理量为1 600 m3/h,实际处理量为1 400 m3/h。经过几个月的调试运行,结果表明,该工艺运行稳定,效果良好。系统进水COD平均为125 mg/L、氨氮为15.6 mg/L、浊度为100 NTU,A/O-MBR处理后出水平均COD为30 mg/L、氨氮为0.2 mg/L、浊度为0.5 NTU。两套工艺处理产水混入清水池,可满足超滤系统进水要求。A coal chemical industry base adopted the combined process of pretreatment （biological aerated filter and sand filter）, UF and RO for advanced treatment of coal chemical wastewater and domestic sewage, but the removal efficiencies of COD and turbidity by the pretreatment process were not significant, the operation load and cost of the subsequent membrane system were increased. Therefore, the treatment process of A/O - MBR was added to treat part of the effluent from the pretreatment process. The total design treatment capacity of the system is 1 600 m^3/h, and the actual treatment capacity is 1 400 m^3/h. After several months of commissioning and operation, the results showed that the system had stable operation and good treatment effect. The average influent COD, ammonia-nitrogen and turbidity were 125 mg/L, 15.6 mg/L and 100 NTU, respectively. After treatment by A/O - MBR, the average effluent COD, ammonia-nitrogen and turbidity were 30 mg/L, 0.2 mg/L and 0.5 NTU, respectively. The effluents from the two processes were mixed into the clean water tank, which could meet the influent quality requirements of the membrane system.

关 键 词：煤化工废水 A/O—MBR 中水回用 

分 类 号：X784[环境科学与工程—环境工程]