城市污水再生处理反渗透系统RO浓水的水质特征  

Water Quality Characteristics of RO Concentrate Produced during Municipal Wastewater Reclamation Reverse Osmosis(mWRRO)Process

作　　者：孙迎雪[1] 胡洪营[2,3] 汤芳[2,3] 高岳[1] 李昂[2,3] 

机构地区：[1]北京工商大学环境科学与工程系,北京100048 [2]清华大学环境学院环境模拟与污染控制国家重点联合实验室,北京100084 [3]清华大学深圳研究生院国家环境保护环境微生物利用与安全控制重点实验室,广东深圳518055

出　　处：《环境科学与技术》2015年第1期72-79,共8页Environmental Science & Technology

基　　金：北京市属高等学校高层次人才引进与培养计划项目(CIT&TCD201304032);国家自然科学基金资助项目(21306003);国家基金委主任基金项目(51348011)

摘　　要：文章系统总结和分析了城市污水再生处理反渗透（m WRRO）系统RO浓水中的化学污染物的来源与特点。结果表明,RO浓水中的COD、DOC、NH3-N、NO3^-和PO4^3-可分别达60~184、19.2~62、0.3~37.5、3.1~296和10~39 mg/L,m WRRO的水源水质、RO操作参数及其回收率的差异导致了RO浓水的水质变化较大。m WRRO工艺运行过程中投加的多种化学药剂使得RO浓水中存在高浓度的无机盐和阻垢剂等化学物质。除了常规水质指标外,m WRRO系统RO浓水中存在高风险有毒物质如药物及个人护理用品（PPCPs）,内分泌干扰物（EDCs）和消毒副产物（DBPs）等。有研究检出RO浓水存在多种PPCPs,如卡马西平、碘美普尔和萘普生的浓度可分别高达3.4、3.9和9.22μg/L。m WRRO系统进水的氯化消毒,会导致工艺运行过程中卤代以及亚硝胺类DBPs的生成。The characteristics of chemical pollutants in reverse osmosis（RO）concentrate produced in municipal wastewater reclamation reverse osmosis（m WRRO）process were investigated. Results show that the levels of COD,DOC,NH3-N,NO3-and PO43-in RO concentrate were 60 ~184,19.2 ~62,0.3 ~37.5,3.1 ~296 and 10 ~39 mg/L respectively. The concentration changing range of different water quality indicators were caused by the different feeding water quality,different operating parameters of RO and its different recovery rate. For the chemical agents injected during m WRRO process to ensure the stability of the operation,many inorganic salts and antiscalant will stay in the RO concentrate. In addition,there are highrisk toxic organics detected in the RO concentrate of m WRRO process such as pharmaceuticals and personal care products（PPCPs）,endocrine disrupting chemicals（EDCs）,disinfection by-products（DBPs）,and so on. Some of PPCPs in RO concentrate were reported,as the level of carbamazepine,iomeprol and naproxen reached up to 3.4,3.9 and 9.22 μg/L respectively. Furthermore,halogenated and nitrosamines DBPs may be formed during m WRRO process because of the chlorination,which will concentrate in the RO concentrate.

关 键 词：污水再生 反渗透工艺 RO浓水 水质指标 高风险有毒物质 

分 类 号：X703[环境科学与工程—环境工程]