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《EARTH SCIENCE-JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES》 2000-05
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GEOCHEMICAL MODELING OF SULFATE POLLUTION IN KARST WATER OF NIANGZIGUAN REGION, SHANXI PROVINCE, CHINA

Li Yilian 1 Wang Yanxin 1 Zhang Jianghua 2 Gao Hongbo 2 (1.Faculty of Engineering, China University of Geosciences, Wuhan430074, China; 2.Water Conservancy Bureau of Yangquan City, Yangquan045000, China)$$$$  
The hydro geochemical research into the karst water of Niangziguan spring area indicates the gradual decrease both in the concentration of sulfate and in the mineralization degree, but the gradual increase in the ratios between Ca 2+ , Mg 2+ and SO 2- 4 along the flow path. The hydro geochemical modeling shows that the widely dissolving of gypsum causes the high concentration of gypsum from recharge area to discharge area, and even at the shallow aquifer. In addition, the mixing with deep water and sidewise water from the runoff to the discharge area reduces the concentration of sulfate in the water. The extraordinarily high concentration of sulfate was initiated by the pollution by the seepage from the Carboniferous-Permian where the oxidation of sulfide produced much higher sulfate in the Middle Ordovician aquifer. The water from the Lower Ordovician aquifer would be much better.
【Fund】: 国家自然科学基金重点项目!(No .495 72 15 9和No .4983 2 0 0 5 );; 国家攀登计划项目专题!( 95 -预 -3 9)
【CateGory Index】: P641.3
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