Simulation of recovery options of brackish water aquifer in the Dagu River area, China
Quarternary alluvial aquifers in the Dagu River region of Qingdao constitute an important coastal watershed with vast fresh groundwater resources and several well fields in operation. This groundwater system has been subjected to heavy drawdown over the last two decades, which has caused serious seawater intrusion. Even the establishment of a subsurface barrier in 1998, 14.9 km2 brackish water still remains in the aquifer. A calibrated solute transport model has been used to investigate the hydrodynamic impacts of different aquifer recovery plans to shrink the amount of brackish water. The results indicate that the optimum plan proposed with three steps can rapidly recover the brackish-water aquifer. After three years operation, the extent of brackish plume (250mg/l) will reduce to 2.06 km2 and the chloride concentration for most of the residual brackish water will be lower than 450mg/l.
Dagu River Aquifer Brackish water Numerical simulation Recovery options, China
Guo-qing Lin Xi-lai Zheng
Key Lab of Marine Environmental Science and Ecology, Ministry of Education Ocean University of China Qingdao, China
国际会议
上海
英文
3588-3591
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）