双级纳滤在地表高度苦咸水淡化工程中的应用  

Application of two stages nanofiltration in desalting of high degree brackish water

作　　者：陈晓英 赵后昌 王龙滨 付学起 

机构地区：[1]天津市滨海新区塘沽环保产业服务中心,天津300450 [2]天津市塘沽鑫宇环保科技有限公司,天津300450

出　　处：《膜科学与技术》2013年第5期63-67,共5页Membrane Science and Technology

基　　金：天津市科技型中小企业创新基金(12ZXCXSF06100);滨海新区塘沽重大科技创新项目(2010CX06-04)

摘　　要：通过双级纳滤法苦咸水脱盐淡化示范工程的建设及运行,针对北方地区地表苦咸水含盐量高等特点,采用双级纳滤技术,在较低的工作压力下,使产水含盐量稳定降低到600mg/L以下,总硬度降低到10mg/L以下,COD降低到2mg/L以下,产水指标优于《城市杂用水水质》中绿化用水标准(GB/T 18920—2002),部分指标甚至优于《生活饮用水卫生标准》(GB5749—2006).本工程自运行以来,各项技术指标以及水质指标一直保持稳定,运行费用为2.2元/t水.Through the construction and operation of experimental demonstration engineering ＂Desalting of high degree brackish water by two stage nanofiltration ＂, in accordance with the feature of high total salinity of surface brackish water in north area of China, a two-stage nanofiltration was used with low operating pressure. The result showed that total salinity of effluent was stable and as low as less than 600 mg/L, total hardness as low as less than 10 mg/L,COD as low as less than 2 mg/L. All of the index of effluent quality were superior to the requirements of＂Water Quality Standard for Urban Miscellaneous Water Consumption＂ （GB/T 18920--2002）, some were superior to the requirements of＂Standards for Drinking Water Quality＂ （GB 5749--2006）. The effluent could be used for road irrigation and afforestation, etc. Months of operation confirmed that technology of the two-stages nanofiltration was successful, the technical and effluent quality index were stable. The operation cost was 2. 2 yuan/t.

关 键 词：双级纳滤 苦咸水 淡化 

分 类 号：TU991.2[建筑科学—市政工程]