化工污水回用装置问题分析与运行优化  

Problem Analysis and Operation Optimization of Chemical Wastewater Reuse Device

作　　者：刘庆洁 Liu Qingjie(SINOPEC Tianjin Company,Tianjin,300271)

机构地区：[1]中国石油化工股份有限公司天津分公司,天津300271

出　　处：《石油化工安全环保技术》2023年第6期42-48,I0003,共8页Petrochemical Safety and Environmental Protection Technology

摘　　要：针对化工污水回用装置产水量无法达标所存在问题,某石化公司对化工污水回用系统进水、超滤装置运行、反渗透膜污堵情况进行了系统梳理和原因分析,并确定优化措施。公司通过合理调配水源、优化预处理BAF装置处理效果、改进超滤清洗方案、优化反渗透化学清洗方案等方式,延长反渗透清洗周期至25天,超滤、反渗透系统回收率、脱盐率等指标接近设计值,化工回用系统日均产水量逐步上升,由日均2958.8 t提高到3497.6 t,运行更加稳定,达到了预期效果。The water yield from the chemical wastewater reuse unit of a petrochemical company cannot meet the production needs.This paper analyzes this problem.Through systematic review and cause analysis of the feeding water of the chemical wastewater reuse system,the operation of the ultrafiltration device and the plugging of the reverse osmosis membranes,the optimization measures are developed.By reasonably adjusting water sources,optimizing the treatment effect of pretreatment BAF device,improving the ultrafiltration cleaning scheme,optimizing the reverse osmosis chemical cleaningclean-ing scheme and so forth,the cleaning cycle of reverse osmosis was extended to 25 days,and the indicators of ultrafiltration and the recovery rate of reverse osmosis system and desalting rate were close to the design value.And the average daily water yield of the chemical reuse system was gradually increased from the daily average of 2,958.8 tons to 3,497.6 tons.The operation was more stable and the expected results were achieved.

关 键 词：污水回用 超滤 反渗透 脱盐率 产水量 

分 类 号：X78[环境科学与工程—环境工程]