Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 28, Issue 9, Pages 10872-10888Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-020-11353-3
Keywords
Managed aquifer recharge; Artificial recharge; Multi-source water; Improved matter-element model; Groundwater quality
Categories
Funding
- Shandong Provincial Key Research and Development Project [2017GSF17121]
- Danish Development Agency (DANIDA) [17-M08-GEU]
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Managed aquifer recharge is crucial for addressing water security issues, but choosing the right water sources is essential to prevent groundwater quality degradation.
Managed aquifer recharge (MAR) is an important approach to address water security, water quality decline, ground subsidence, and aquifer degradation. In this study, the large-scale recharge experiments were conducted in a natural river with multiple water sources. The MAR with multi-source water was investigated by developing an improved matter-element model under a limited recharged quantity and period in Jinan, China. Results showed that the background levels (BL) of groundwater quality before recharge was relatively good. However, the use of different water sources would cause a significant increase in the content of some groundwater quality indexes, which might further induce deterioration of regional groundwater quality. And the water quality in porous and karst aquifer displayed deteriorating trends during different water source recharge. Additionally, the adverse effects of recharge water sources on regional groundwater quality in turn was South-to-North Water Diversion Project (SN) > Yellow River (YR) > Wohushan Reservoir (WR). Meanwhile, the high-risk indexes in groundwater quality were presented during different water source recharge. Accordingly, relevant suggestions and measures were then put forward to optimize the MAR with multi-source water and explore the high-efficiency and low-risk recharge mode.
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