污水回用反渗透装置运行问题分析

Analysis of problem in operation of reverse osmosis device for wastewater reuse

某化工污水回用装置将反渗透工艺应用于废水的深度处理过程,废水处理后用作脱盐水装置的补水。装置正常运行时出水能力、除盐率均能满足用水装置要求。污水经前段隔油、气浮、生化、过滤、UF等工艺预处理后进入RO单元进行除盐。自2014年装置开工以来,最大的问题是RO膜的污染堵塞。文中结合几年来的生产实践,对反渗透装置运行问题进行分析,并提出了相应的建议。

The chemical wastewater reuse device of Daqing petrochemical company applied the reverse osmosis process to thedeep treatment process,and the treated waste was used as the makeup water for the demineralized water unit.When the unit is innormal operation,the water discharge capacity and salt removal rate can meet the requirement water user requirement.The wastewater enters into RO unit for demineralization after pretreatment with processes such as forepart oil removal,air floatation,biochemical treatment,filtration and UF.Since the plant startup in 2014,the biggest problem was the pollution blocking of ROmembrane.Based on the production practice of several years,this paper made analysis to the operation problems of the reverseosmosis device,and put forward corresponding suggestion.