某化工企业中水回用工程设计及运行实例  

A design and operation case of reclaimed water reuse project in a chemical enterprise

作　　者：薛喜东 张乾 王可宁 冯涛 潘春佑 李露 XUE Xidong;ZHANG Qian;WANG Kening;FENG Tao;PAN Chunyou;LI Lu(The Institute of Seawater Desalination&Multipurpose Utilization,MNR,Tianjin 300192,China)

机构地区：[1]自然资源部天津海水淡化与综合利用研究所,天津300192

出　　处：《工业用水与废水》2023年第2期75-78,87,共5页Industrial Water & Wastewater

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(K-JBYWF-2021-QR06)。

摘　　要：以某化工企业生化处理后的生产废水为原水,设计了1套处理量为1000 m^(3)/d的中水回用系统,整体工艺采用超滤-反渗透双膜法。工程运行结果表明,超滤产水浊度低于0.2 NTU,反渗透产水电导率低于150μS/cm,整体水回收率达到71%,综合运行成本为1.31元/m^(3);此外,针对工程运行中保安滤芯堵塞、超滤膜清洗等问题,进行了详细分析并提出了解决方案。Taking the production wastewater after biochemical treatment of a chemical enterprise as raw water,a set of reclaimed water reuse system with a treatment capacity of 1000 m^(3)/d was designed.The overall process adopts double membrane methods:ultrafiltration-reverse osmosis,the engineering operation results showed that the turbidity of ultrafiltration produced water was lower than 0.2 NTU,the conductivity of reverse osmosis produced water was lower than 150μS/cm,and the overall water utilization rate reached 71%,and the comprehensive operation cost was 1.31 yuan/m^(3).In addition,the problems of security filter element blockage and ultrafiltration membrane cleaning in engineering operation were analyzed in detail with solutions put forwarded at the same time.

关 键 词：中水回用 超滤 反渗透 回收率 浊度 

分 类 号：TQ028.8[化学工程]