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Application Of Two Stages Nanofiltration In Desalting Of High Degree Brackish Water

Authors： CHEN Xiaoying1，ZHAO Houchang2，WANG Longbin2，FU Xueqi2

Units： 1 Tianjin Tanggu Productivity Promotion Center Of Environmental Protection;2 Tianjin Tanggu XinYu Environmental Protection Science & Technology Co., Ltd

KeyWords： two stages nanofiltration；brackish water；desalination

ClassificationCode：TQ028.8；X37

year,volume(issue):pagination： 2013,33(5):63-67

Abstract：

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 totalsalinity of surface brackish water in north area of China, the two stages nanofiltration was used with low operating pressure. The result showed that totalsalinity of effluent was stable and as low as less then 600mg•L-1, total hardness as low as less then 10mg•L-1,COD as low as less then 2mg•L-1. All of the index of effluent quality were superior to the requirements of“Water Quality Standard for Urban Miscellaneous Water Consumption”(GB/T18920-2002), some were superior to the requirements of“Standards for Drinking Water Quality”(GB5749-2006). 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 was stable.The operation cost was 2.2yuan/t.
Keywords:two stages nanofiltration；brackish water；desalination

Funds：

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）

AuthorIntro：

陈晓英（1982年—），女，硕士，中级工程师，主要从事苦咸水资源化技术研究.Email：tjxinyu2009@sina.com.

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