Membrane and Water Treatment

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Stable isotope and water quality analysis of coal bed methane produced water in the southern Qinshui Basin, China

  • Pan, Jienan (School of Resources & Environment, Henan Polytechnic University) ;
  • Zhang, Xiaomin (School of Resources & Environment, Henan Polytechnic University) ;
  • Ju, Yiwen (College of Earth Sciences, University of Chinese Academy of Sciences) ;
  • Zhao, Yanqing (School of Resources & Environment, Henan Polytechnic University) ;
  • Bai, Heling (School of Resources & Environment, Henan Polytechnic University)
  • Received : 2012.11.23
  • Accepted : 2013.08.15
  • Published : 2013.10.25
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Abstract

China is one of the countries with the highest reserves of coal bed methane (CBM) in the world. Likewise, the CBM industry is significantly growing in China. However, activities related to CBM development have led to more environmental problems, which include serious environmental damage and pollution caused by CBM-produced water. In this paper, the detailed characteristics of CBM-produced water in the southern Qinshui Basin were investigated and analyzed and compared with local surface water and coal mine drainage. Most of CBM-produced water samples are contaminated by higher concentration of total dissolved solids (TDS), K (Potassium), Na (Sodium) and $NH_4$. The alkalinity of the water from coalmines and CBM production was higher than that of the local surface water. The concentrations of some trace elements such as P (Phosphorus), Ti (Titanium), V (Vanadium), Cr (Chromium), Ni (Nickel), Zn (Zinc), Ge (Germanium), As (Arsenic), Rb (Rubidium), and Pd (Palladium) in water from the coalmines and CBM production are higher than the acceptable standard limits. The ${\delta}D$ and ${\delta}^{18}O$ values of the CBM-produced water are lower than those of the surface water. Similarly, the ${\delta}D$ values of the CBM-produced water decreased with increasing drainage time.

Keywords

References

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