Hydrochemical Characteristics and Formation Analysis of Phreatic Water in Tongzhou District of Beijing

LAN Tian-shan, MIAO Jin-jie, BAI Yao-nan, PING Shi-fei, WANG Fu-gang, CAO Yu-qing

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Water Saving Irrigation ›› 2018 ›› (12) : 70-76.

Hydrochemical Characteristics and Formation Analysis of Phreatic Water in Tongzhou District of Beijing

  • LAN Tian-shan1 ,MIAO Jin-jie2 ,BAI Yao-nan2 ,PING Shi-fei 1 ,WANG Fu-gang1 ,CAO Yu-qing1
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Abstract

As the center of the Beijing -Tianjin economic belt,Tongzhou district is an important food and vegetable production basis in Beijing. The groundwater is the main source of cultivation and drinking water for residents and animals. It is significant to study the distribution characteristics and formation causes of groundwater in Tongzhou for rational development and protection of groundwater resources and playing the role of satellite cities. Based on field sampling and testing,this paper systematically studied the hydrochemical characteristics and genesis of shallow groundwater in Tongzhou by using Shukalev classification,Piper diagram,contour map and ion ration analysis. The methods of comprehensive appraisal and Nemero index were used to assess the quality of phreatic water. The results show that : ①The phreatic water presents medium-weak alkalinity,hydrochemical characteristic is mainly HCO3-Ca·Mg( HCO3-Ca·Na or HCO3-Ca·Mg ·Na) and HCO3·Cl-Mg·Na( HCO3·Cl-Na·Ca) ,and the phreatic water is mainly of freshwater with TDS between 0.5 and 1.0 g /L. ② Chemical composition of phreatic water is affected by lithology,topography,climate and human activity. ③The phreatic water quality is mainly at Grade Ⅲ in Tongzhou by mapping the groundwater quality assessment zone,and the main pollutants are NH4-N,NO3-N,F and As

Key words

hydrogeochemical characteristics / groundwater / phreatic water / groundwater quality assessment / Tongzhou district of Beijing

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LAN Tian-shan, MIAO Jin-jie, BAI Yao-nan, PING Shi-fei, WANG Fu-gang, CAO Yu-qing. Hydrochemical Characteristics and Formation Analysis of Phreatic Water in Tongzhou District of Beijing. Water Saving Irrigation. 2018, 0(12): 70-76

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