4.7.2China
Table 4. Project : Stable isotope and water quality analysis of coal bed methane produced water in the southern Qinshui Basin, China
Project characteristics
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Details
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Project title
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Stable isotope and water quality analysis of coal bed methane produced water in the southern Qinshui Basin, China
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Project location
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China
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Principal investigator
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Pan, Jienan; Zhang, Xiaomin; Ju, Yiwen; Zhao, Yanqing; Bai, Heling
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Lead institution
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Henan Polytechnic University
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Project budget
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Unknown
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Source of funding
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Unavailable
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Project duration
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Unknown- literature output 2013
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Current status
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Unknown- literature output 2013
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Project summary
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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 NH4. 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 D and 18O values of the CBM-produced water are lower than those of the surface water. Similarly, the D values of the CBM-produced water decreased with increasing drainage time.
© 2013 Techno-Press, Ltd.
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Outputs
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Pan et al. (2013). Stable isotope and water quality analysis of coal bed methane produced water in the southern Qinshui Basin, China. Membrane Water Treatment. P.O. Box 33 Yusong, Taejon, 305-600, Korea, Republic of: Techno Press.
http://dx.doi.org/10.12989/mwt.2013.4.4.265
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Key personnel
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Pan, Jienan; Zhang, Xiaomin; Ju, Yiwen; Zhao, Yanqing; Bai, Heling
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Contact
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School of Resources And Environment, Henan Polytechnic University, Jiaozuo 454000, China
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Research themes
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Co-produced/mine water, water supplies
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Project information source
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Literature
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Table 4. Project : Ecological restoration of abandoned mine land in China
Project characteristics
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Details
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Project title
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Ecological restoration of abandoned mine land in China
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Project location
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China
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Principal investigator
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Hu, Zhenqi; Wang, Peijun; Li, Jing
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Lead institution
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Institute of Land Reclamation and Ecological Restoration, China University of Mining and Technology (Beijing), Beijing 100083, China
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Project budget
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Unknown
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Source of funding
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Unavailable
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Project duration
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Unknown- literature output 2012
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Current status
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Unknown- literature output 2012
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Project summary
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Unknown
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Outputs
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Hu et al. (2012). Ecological restoration of abandoned mine land in China. Journal of Resources and Ecology.
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Key personnel
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Hu, Zhenqi; Wang, Peijun; Li, Jing
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Research themes
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Surface water, water supplies, water dependent ecosystems
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Project information source
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Literature
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Table 4. Project : Variational characteristics of water quality of produced formation water in coalbed methane production area
Project characteristics
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Details
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Project title
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Variational characteristics of water quality of produced formation water in coalbed methane production area
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Project location
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China
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Principal investigator
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Liu, Hui Hu; Sang, Shu Xun; Xu, Hong Jie; Liu, Shi Qi
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Lead institution
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School of Earth and Environment, Anhui University of Science and Technology
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Project budget
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Unknown
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Source of funding
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Unavailable
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Project duration
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Unknown- literature output 2013
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Current status
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Unknown- literature output 2013
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Project summary
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The produced formation water samples and the stored water samples of the tanks in coalbed methane production area were sampled, and their pH, the ion concentration were tested, the variational characteristics of pH, the distribution and the variation with time of the ion concentration, the variational characteristics of the salinity and the conductivity from the produced formation water and the water of the tanks were discussed in order to investigate the variational characteristics of water quality of the proudced formation water in coalbed methane production area. The results show that the produced formation water are alkalescent, the pH of the produced formation water and the stored water in the tanks are near to or beyond the maximum of Chinese irrigation water quality standards. The anions of the produced formation water are mainly HCO3-and Cl-, the ion concentration haven't dearease effectively during the discharge of the produced formation water, the concentration of Cl- in the produced formation water and the stored water of the tanks from the partial coalbed methane wells is beyond the limit of the national standards. The salinity of the produced formation water and the stored water of the tanks are between 1500 mg/L and 2000 mg/L, and they are between the maximum of the non-saline areas and the maximum of the saline area according to Chinese irrigation water quality standards. The total hardness and the conductivity of the produced formation water and the stored water of the tanks in coalbed methane production area are relatively low, and they can meet the national discharged standard of sewage.
© (2013) Trans Tech Publications, Switzerland.
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Outputs
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Liu et al. (2013). Variational characteristics of water quality of produced formation water in coalbed methane production area. 2013 2nd International Conference on Energy and Environmental Protection, ICEEP 2013, April 19, 2013 - April 21, 2013. Guilin, China: Trans Tech Publications Ltd.
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Key personnel
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Liu, Hui Hu; Sang, Shu Xun; Xu, Hong Jie; Liu, Shi Qi
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Contact
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School of Earth and Environment, Anhui University of Science and Technology, Huainan, Anhui 232001, China
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Research themes
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Water supplies
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Project information source
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Literature
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Table 4. Project : Hydrogeochemical evolution of Ordovician limestone groundwater in Yanzhou, North China
Project characteristics
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Details
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Project title
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Hydrogeochemical evolution of Ordovician limestone groundwater in Yanzhou, North China
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Project location
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China
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Principal investigator
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Han, Yong; Wang, Guangcai; Cravotta, Charles A.; Hu, Weiyue; Bian, Yueyue; Zhang, Zongwen; Liu, Yuanyuan
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Lead institution
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School of Water Resources and Environment, China University of Geosciences
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Project budget
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Unknown
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Source of funding
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Fundamental Research Funds for the Central Universities of China (No. 53200959016), the National Basic Research Program of China (973 Program) (No. 2006CB202205) and NSFC (No. 40930637)
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Project duration
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Unknown- literature output 2013
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Current status
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Unknown- literature output 2013
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Project summary
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Major-ion compositions of groundwater are employed in this study of the water–rock interactions and hydrogeochemical evolution within a carbonate aquifer system. The groundwater samples were collected from boreholes or underground tunnels in the Ordovician limestone of Yanzhou Coalfield where catastrophic groundwater inflows can be hazardous to mining and impact use of the groundwater as a water supply. The concentration of total dissolved solid (TDS) ranged from 961 to 3555?mg/l and indicates moderately to highly mineralized water. The main water-type of the middle Ordovician limestone groundwater is Ca-Mg-SO4, with SO42- ranging from 537 to 2297?mg/l, and average values of Ca2+ and Mg2+ of 455.7 and 116.6?mg/l, respectively. The water samples were supersaturated with respect to calcite and dolomite and undersaturated or saturated with respect to gypsum. Along the general flow direction, deduced from increases of TDS and Cl-, the main water–rock interactions that caused hydrogeochemical evolution of the groundwater within the aquifer were the dissolution of gypsum, the precipitation of calcite, the dissolution or precipitation of dolomite, and ion exchange. Ion exchange is the major cause for the lower mole concentration of Ca2+ than that of SO42-. The groundwater level of Ordovician aquifer is much higher than that of C-P coal-bearing aquifers, so the potential flow direction is upward, and the pyrite in coal is not a possible source of sulfate; additional data on the stable sulfur and oxygen isotopic composition of the sulfate may be helpful to identify its origin. Although ion exchange probably accounts for the higher mole concentration of Na+ than that of Cl-, the dissolution of aluminosilicate cannot be ruled out. The data evaluation methods and results of this study could be useful in other areas to understand flow paths in aquifers and to provide information needed to identify the origin of groundwater.
© © 2012 John Wiley & Sons, Ltd.
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Outputs
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Han et al. (2013). Hydrogeochemical evolution of Ordovician limestone groundwater in Yanzhou, North China. Hydrological Processes.
http://dx.doi.org/10.1002/hyp.9297
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Key personnel
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Han, Yong; Wang, Guangcai; Cravotta, Charles A.; Hu, Weiyue; Bian, Yueyue; Zhang, Zongwen; Liu, Yuanyuan
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Research themes
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Aquifer interconnectivity, water supplies
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Project information source
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Literature
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