Environmental Research of Groundwater Chemical Composition and Pollution Characteristics in Tongchuan City, China

Yuxi Zhang, Jingtao Liu, Jiansheng Shi, Yuanjing Zhang, Xiaoping Xiang

Ekoloji, 2019, Issue 107, Pages: 1107-1114, Article No: e107130

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Abstract

The investigation and assessment of groundwater chemistry and quality is a hot topic worldwide, triggering international attention from both researchers and policy makers due to its relevant link with environmental objectives and regional development. To master quality and pollution status of groundwater in Tongchuan City, China, 39 sets of groundwater samples were collected, and 17 inorganic conventional indicators, 9 inorganic toxicological indicators and 39 trace organic indicators were analyzed. Groundwater quality and pollution were assessed by “hierarchy step evaluation method”. The results show that shallow water in Tongchuan City was in relatively poor quality in 2011. The samples that can be directly consumed or drunk after proper treatment account for 60% of the total, while 40% samples cannot be drunk. Shallow water quality is subjected to common influence of natural background and human activities, with total hardness, NO3-, SO42- as the main influence indicators. Deep water is in relatively good quality, and water in all sampling points can be directly consumed or drunk after proper treatment. Deep water is mainly affected by natural background, with Fe as the main influence indicator. The results of pollution assessment show that the shallow water samples with pollution at levels 1, 2, 3, and 4 account for 44%, 16%, 32%, and 8% of the total, and the pollution is mainly distributed in Qishui River valley in the south of Jinsuoguan and north of Chuankou. The deep water pollution level is at level 1 without influence of human pollution.

Keywords

Tongchuan City, groundwater, hierarchy step evaluation method, pollution, environmental objectives

References

  • Chen RJ, Qian HL, Kan HD, et al. (2009) A Review of Comprehensive Index Methods in Water Quality Assessment. Journal of Environmental and Occupational Medicine 6: 581–584. [in Chinese]
  • Fang HW, Sun SQ, Zhu YL, et al. (2009) Principal Component Analysis Apply in Water Quality Assessment. Environmental Science and Management 34(12): 152–154. [in Chinese]
  • Lin L, Zeng YY, Jia RL, et al. (2017) Assessment of Groundwater Quality and Pollution in Shihezi Area of Xinjiang. Yellow River 39(3): 65–69. [in Chinese]
  • Shao L, Zhou XD, Yang FT, et al. (2010) Projection pursuit model for comprehensive evaluation of water quality based on free search. China Environmental Science 30(12): 1708–1714. [in Chinese]
  • Wen DG, Lin LJ, Sun JC, et al. (2012) Groundwater Quality and Contamination Assessment in the Main Plains of Eastern China. Earth Science-Journal of China University of Geosciences 27(2): 220–228. [in Chinese]
  • Wu AM, Jin JH, Song B (2016) Water Safety Issues of China and Ensuring Roles of Groundwater. Acta Geologica Sinica 90(10): 2939–2947. [in Chinese]
  • Yang Y, Wei WW, Li DL, et al. (2012) Study on the groundwater pollution in Changzhou urban area. Groundwater 34(1): 77–79. [in Chinese]
  • Yang YY, Yin L, Liu C, et al. (2017) Water Quality Assessment of Heihe River Basin Based on Grey Correlation Method and BP Neural Network. Yellow River 39(6): 58–62. [in Chinese]
  • Zeng YY, Zhou JL, Gao YX, et al. (2016) Causes of groundwater pollution and the assessment in Shihezi area, Xinjiang. Journal of Arid Land Resources and Environment 30(7): 197–202. [in Chinese]
  • Zhang XD, Gao MT (2016) Water quality prediction method based on IGA-BP. Chinese Journal of Environmental Engineering 10(3): 1566–1571. [in Chinese]
  • Zhang YX, Liu JT, Zhang YJ (2015) Hydrochemical Evolution of Shallow and Deep Groundwater in Tongchuan City, China. Journal of Coastal Research 73: 436–442. [in Chinese]
  • Zhang ZJ, Fei YH, Guo CY, et al. (2012) Regional groundwater contamination assessment in the North China Plain. Journal of Jilin University: Earth Science Edition 42(5): 1456–1461. [in Chinese]