高碱度高溴难降解反渗透浓盐水处理工程案例分析  

A CASE STUDY ON TREATMENT OF REFRACTORY REVERSE OSMOSIS CONCENTRATED BRINE WITH HIGH ALKALINITY,HIGH BROMINE BY DUAL MEMBRANE TECHNOLOGY

作　　者：张乐乐 郭磊 程志刚 杨志林 马悦 秦鑫 杨超思 ZHANG Lele;GUO Lei;CHENG Zhigang;YANG Zhilin;MA Yue;QIN Xin;YANG Chaosi(Jiangsu Fangyang Water Co.,Ltd.,Lianyungang 222000,China)

机构地区：[1]江苏方洋水务有限公司,江苏连云港222000

出　　处：《环境工程》2023年第12期236-240,328,共6页Environmental Engineering

基　　金：连云港市科技发展计划SF2129。

摘　　要：高盐难降解的反渗透浓水能否达标处理,严重制约着中水回用双膜技术的推广应用。以江苏某工业园区高碱度、高溴的反渗透浓盐水达标处理的实际工程为例,探讨了影响工艺出水达标的主要因素,并确定了最佳的工艺运行参数。工程运行结果表明:Br^(-)浓度和碱度过高时会影响臭氧生化耦合系统的处理效果。适当投加H_(2)O_(2)可对Br^(-)产生掩蔽效应,降低高浓度Br^(-)对O_(3)利用效率的影响。H_(2)O_(2)投加量为80 mg/L,且控制碱度<2000 mg/L时,臭氧生化耦合系统对COD去除效率可由10%提高到46%,整套系统出水满足达标排放标准。该项目对高碱度、高溴难降解的反渗透浓盐水的达标处理,可为同类废水的处理提供指导和借鉴。The popularization and application of the dual membrane technology for reclaimed water reuse are seriously restricted by whether the high salinity and refractory reverse osmosis concentrated water can be treated to meet the emission standard.In this paper,taking an actual project of high alkalinity and high bromine reverse osmosis concentrated brine treatment in an industrial park in Jiangsu Province as an example,the main factors affecting the effluent quality were discussed,and the best process operation parameters were determined.The project operation results showed that the treatment effect of the ozone biochemical coupling system will be affected,when Br^(-)concentration and alkalinity were too high.Properly adding hydrogen peroxide can provide a masking effect on bromine ions and reduce the impact of high-concentration bromine ions on ozone utilization efficiency.When the dosage of hydrogen peroxide was 80 mg/L and the alkalinity was controlled less than 2000 mg/L,the COD removal efficiency of the ozone biochemical coupling system increased from 10%to 46%,and the effluent of the whole system met the emission standard.The treatment of RO-concentrated brine in this project can provide guidance and reference for the treatment of similar wastewater.

关 键 词：双膜技术 高盐废水 高溴离子 工程运行 臭氧生化耦合工艺 

分 类 号：X703[环境科学与工程—环境工程]