SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2012, Vol. 20 ›› Issue (2): 302-311.

• ENERGY, RESOURCES AND ENVIRONMENTAL TECHNOLOGY • 上一篇    下一篇

A Pilot-scale Demonstration of Reverse Osmosis Unit for Treatment of Coal-bed Methane Co-produced Water and Its Modeling

钱智1, 刘新春1, 余志晟1, 张洪勋1, 琚宜文2   

  1. 1. College of Resources and Environment, Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    2. Earth College, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2012-01-06 修回日期:2012-02-21 出版日期:2012-04-28 发布日期:2012-05-02
  • 通讯作者: YU Zhi-Sheng
  • 基金资助:
    Supported by the National Basic Research Program of China(2011ZX05060-005;2009ZX05039-003),the National Natural Science Foundation of China(21106176),the President Fund of GUCAS(Y15101JY00)and the National Science Foundation for Post-doctoral Scientists of China(20110490627).

A Pilot-scale Demonstration of Reverse Osmosis Unit for Treatment of Coal-bed Methane Co-produced Water and Its Modeling

QIAN Zhi1, LIU Xin-Chun1, YU Zhi-Sheng1, ZHANG Hong-Xun1, Jü Yi-Wen2   

  1. 1. College of Resources and Environment, Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    2. Earth College, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-01-06 Revised:2012-02-21 Online:2012-04-28 Published:2012-05-02
  • Supported by:
    Supported by the National Basic Research Program of China(2011ZX05060-005;2009ZX05039-003),the National Natural Science Foundation of China(21106176),the President Fund of GUCAS(Y15101JY00)and the National Science Foundation for Post-doctoral Scientists of China(20110490627).

摘要: This study presents the first demonstration project in China for treatment of coal-bed methane(CBM) co-produced water and recycling.The work aims to provide a research and innovation base for solving the pollution problem of CBM extraction water.The reverse osmosis(RO)unit is applied to the treatment of CBM co-produced water.The results indicate that system operation is stable,the removal efficiency of the total dissolved solids(TDS) is as high as 97.98%,and Fe,Mn,and F- are almost completely removed.There is no suspended solids(SS)detected in the treated water.Furthermore,a model for the RO membrane separation process is developed to describe the quantitative relationship between key physical quantities—membrane length,flow velocity,salt concentration, driving pressure and water recovery rate,and the water recovery restriction equation based on mass balance is developed.This model provides a theoretical support for the RO system design and optimization.The TDS in the CBM co-produced water are removed to meet the“drinking water standards”and“groundwater quality standards” of China and can be used as drinking water,irrigation water,and livestock watering.In addition,the cost for treatment of CBM co-produced water is assessed,and the RO technology is an efficient and cost-effective treatment method to remove pollutants.

关键词: coal-bed methane co-produced water, high salt, pretreatment process, mass balance,reverse osmosis

Abstract: This study presents the first demonstration project in China for treatment of coal-bed methane(CBM) co-produced water and recycling.The work aims to provide a research and innovation base for solving the pollution problem of CBM extraction water.The reverse osmosis(RO)unit is applied to the treatment of CBM co-produced water.The results indicate that system operation is stable,the removal efficiency of the total dissolved solids(TDS) is as high as 97.98%,and Fe,Mn,and F- are almost completely removed.There is no suspended solids(SS)detected in the treated water.Furthermore,a model for the RO membrane separation process is developed to describe the quantitative relationship between key physical quantities—membrane length,flow velocity,salt concentration, driving pressure and water recovery rate,and the water recovery restriction equation based on mass balance is developed.This model provides a theoretical support for the RO system design and optimization.The TDS in the CBM co-produced water are removed to meet the“drinking water standards”and“groundwater quality standards” of China and can be used as drinking water,irrigation water,and livestock watering.In addition,the cost for treatment of CBM co-produced water is assessed,and the RO technology is an efficient and cost-effective treatment method to remove pollutants.

Key words: coal-bed methane co-produced water, high salt, pretreatment process, mass balance,reverse osmosis