Investigation of the hydrogeochemical processes and regional evolution of karst groundwater in Liulin Spring catchment, northern China

The study of the hydrochemical characteristics and the water–rock interaction of karst groundwater is very important for the rational exploitation of karst groundwater and its pollution control. In this paper, the systematic clustering method was used to analyze the hydrochemical characteristics of different types of groundwater, combined with hydrochemical graphic analysis and correlation analysis to explore the impact of chemical acidic wastewater on the evolution of karst aquifer in the Dawu water source area, northern China. The results show that the chemical acid wastewater, sourcing from discharges/spillages from the local chemical industries, has different degrees of pollution impact on karst groundwater, causing the total hardness of all karst groundwater and the total dissolved solids, Cl− and SO42− in nearly half of the karst groundwater to exceed the quality indexes of class III water in China’s standard for groundwater quality (GB/T 14848-2017). Hydrochloric acid and sulfuric acid in the wastewater can be buffered by the dissolution of carbonate rocks, resulting in a nearly neutral pH (pH-buffering effect) and an increase in Ca2+, Mg2+, Sr, Cl− and SO42− concentrations in karst groundwater.

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Sources and behaviors of dissolved sulfate in the Jinan karst spring catchment in northern China identified by using environmental stable isotopes and a Bayesian isotope-mixing model

Applied Geochemistry ◽

10.1016/j.apgeochem.2021.105109 ◽

2021 ◽

pp. 105109

Author(s):

Jie Zhang ◽

Menggui Jin ◽

Mingda Cao ◽

Xin Huang ◽

Zhixin Zhang ◽

...

Keyword(s):

Stable Isotopes ◽

Northern China ◽

Mixing Model ◽

Karst Spring ◽

Spring Catchment ◽

Bayesian Isotope Mixing Model ◽

And Behaviors

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A New Perspective to Explore the Hydraulic Connectivity of Karst Aquifer System in Jinan Spring Catchment, China

Water ◽

10.3390/w10101368 ◽

2018 ◽

Vol 10 (10) ◽

pp. 1368 ◽

Cited By ~ 10

Author(s):

Zhengxian Zhang ◽

Weiping Wang ◽

Shisong Qu ◽

Qiang Huang ◽

Shuai Liu ◽

...

Keyword(s):

High Efficiency ◽

Low Cost ◽

Karst Aquifer ◽

Groundwater Table ◽

Karst Groundwater ◽

Groundwater Exploitation ◽

Aquifer System ◽

Regional Hydrogeology ◽

Karst Aquifer System ◽

Spring Catchment

Investigating the hydraulic connectivity of a complex karst aquifer system is an important research topic for sustainable operation and optimization layout of karst groundwater exploitation and recharge. However, the identification of preferential sites of recharge and exploitation is usually subject to regional hydrogeology conditions and the mechanisms of recharge and exploitation. The conventional research methods of hydraulic connectivity often have some limitations. In this study, we developed an improved grey amplitude relation model to explore the hydraulic connectivity in Jinan spring catchment and presented a quantized evaluation index water table fluctuation relation degree (WTFRD) using karst groundwater table data in Western Jinan and Jinan spring groups from 2014 to 2017. Results showed that the total WTFRD was 0.854 between Western Jinan and Jinan spring groups when the external distraction for karst groundwater table was the smallest, which was in high relation degree grade. Meanwhile, the change rules of karst groundwater table in the two sites were basically the same. Accordingly, a high connectivity occurred between the two karst aquifers from a statistical perspective, and further illustrated that Western Jinan could be selected as preferential experiment sites. A comprehensive case in Jinan spring catchment indicated that the WTFRD provided a preliminary idea to investigate hydraulic connectivity quantitatively. This method could be considered as a pre-study of the conventional experiments to form a high-efficiency and low-cost combined method, which has great potential and merits further study.

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Groundwater quality assessment and hydrogeochemical processes in typical watersheds in Zhangjiakou region, northern China

Environmental Science and Pollution Research ◽

10.1007/s11356-021-15644-1 ◽

2021 ◽

Author(s):

Wanjun Jiang ◽

Yizhi Sheng ◽

Hongwei Liu ◽

Zhen Ma ◽

Yaxin Song ◽

...

Keyword(s):

Groundwater Quality ◽

Quality Assessment ◽

Northern China ◽

Hydrogeochemical Processes ◽

Groundwater Quality Assessment

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Quantitative Study on the Changes of Karst Groundwater Level and Hydrochemistry in Jinci Spring Catchment, Shanxi, China

Exposure and Health ◽

10.1007/s12403-019-00317-9 ◽

2019 ◽

Vol 12 (3) ◽

pp. 513-525 ◽

Cited By ~ 3

Author(s):

Zhixiang Zhang ◽

Zhaoliang Wang ◽

Yongxin Xu ◽

Yongbo Zhang ◽

Liangliang Guo ◽

...

Keyword(s):

Quantitative Study ◽

Groundwater Level ◽

Karst Groundwater ◽

Spring Catchment

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Impacts of Artificial Regulation on Karst Spring Hydrograph in Northern China: Laboratory Study and Numerical Simulations

Water ◽

10.3390/w11040755 ◽

2019 ◽

Vol 11 (4) ◽

pp. 755 ◽

Cited By ~ 2

Author(s):

Wu ◽

Shu ◽

Li ◽

Chen ◽

Xu ◽

...

Keyword(s):

Karst Aquifer ◽

Time Lag ◽

Northern China ◽

Flow Fields ◽

Spring Discharge ◽

Karst Groundwater ◽

Karst Spring ◽

Stagnation Points ◽

Recession Coefficient ◽

Laboratory Tank

Karst aquifers produce the world’s largest springs and supply the water resources to about a quarter of the global population while being influenced by high-intensity human activities. Knowledge about spring discharge hydrographs driven by the effects of artificial regulation is essential to develop practical strategies for the management of karst groundwater. Based on hydrogeological conditions of the karst aquifer in Jinan, a two-dimensional laboratory tank was constructed, and a corresponding numerical simulation model was developed to explore how artificial regulation drives spring hydrographs in northern China. The results showed that the spring hydrographs were significantly changed under the effects of artificial regulation. The recession coefficient increased with pumping and decreased with increasing injection rates. The late sub-recession of spring discharge did not obey the exponential recession under the influence of injection. Pumping and injection in conduit zones showed more obvious effects on the recession coefficient in the late sub-recession curves. Groundwater exchange between conduits and fissure zones differed totally for different artificial regulation modes. With continuing rainfall, the flow fields were gradually controlled by rainfall. There was a time lag in the flow fields caused by rainfall. Under the stress of exploitation at different positions, stagnation points appeared at different locations in fissure zones, and locations of stagnation points were highly dependent on the positions of pumping wells. These findings are essential for better management of karst groundwater and karst spring protection.

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