JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI ›› 2020, Vol. 37 ›› Issue (9): 18-23.DOI: 10.11988/ckyyb.20190476

• WATER RESOURCES AND ENVIRONMENT • Previous Articles     Next Articles

Hydrochemical Characteristics and Water Quality Evaluation of Groundwater in Zibo Dawu Water Source, Shandong Province

FENG Jian-guo1, JI De-shuai1, GAO Zong-jun1, YANG Li-zhi2, ZHU Heng-hua2, LIU Zhi-zheng2   

  1. 1. College of Earth Science and Engineering, Shandong University of Science and Technology,Qingdao 266590,China;
    2. Shandong Provincial Institute of Geological Survey,Jinan 250013,China
  • Received:2019-04-25 Revised:2019-06-18 Online:2020-09-01 Published:2020-09-25

Abstract: The hydrochemical characteristics and water quality status of karst confined water in Dawu water source of Shandong Province were investigated using mathematical statistics, correlation analysis, Piper's plot, Gibbs model and ion ratio method by analyzing 57 groundwater samples taken in 2017. The major ion characteristics and causes were examined, and the water quality was assessed by comprehensive evaluation method. Results reveal that Ca2+ and Na+ are the major cations of groundwater, accounting for 82.8% of the total cations; HCO3-, SO42-, and Cl- are the main anions, accounting for 91.9% of the total anions. HCO3·SO4-Ca· Mg(Ca), HCO3·SO4·Cl-Ca·Mg(Ca), and HCO3·Cl-Ca·Mg(Ca) are dominant hydrochemical patterns. The hydrochemical components are mainly controlled by weathering and dissolution of carbonate rock. The groundwater quality is above class Ⅲ, which accounts for 47.4% of the total water samples, while Ⅳ and Ⅴ classes occupy 52.6% of the total water samples.

Key words: groundwater, hydrochemical characteristics, water quality evaluation, Dawu water source, correlation analysis

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