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采用迦辽金有限单元法对龙口市区地下水资源进行评价。按当地设计的开采量预报 ,本区未来地下水位降落漏斗范围有所缩小 ,地下水位负值区面积基本没有变化。只有采取如下措施 :增开新的水源地 ,充分利用地表水及加强水库工程 ,合理布局开采井 ,再生水利用及引进容水 ,方能达到最优的环境和社会效益。 相似文献
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This paper gives in some ways a broad look at the Bioremediation Technology in the treatment of polluted groundwater. Environmentalists and Hydrologeologists around the world, especially in the developed countries welcomed this revolutionizing technique at a moment when other methods were becoming rather expensive and sources of secondary and more challenging pollution problems across sole fresh groundwater. Bioremediation of contaminated groundwater is based on the use of bacteria which breakdown organic matters to more stable forms, which will not create nuisance or give off foul odors. The Applicability of this technology at a specific site lies in the understanding of the site's hydrogeologic, physiochemical backgrounds and the knowledge of the properties of the designated bacteria colonies, which would likely stabilize the contaminants. These are key points, which determine the success of the all process. Only, by complying with all those measures, Bioremediation can meet all the expectations. 相似文献
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In this paper a case study of hydraulic connectivity in a 300–1600 m deep, low temperature, sedimentary geothermal system in Kaifeng area, Henan province, China is presented. Based on lithologic data from 52 geothermal wells and chemical data on geothermal water (GW) from six depth-specific and representative wells, the system was chemically grouped into two main hot reservoirs (300–1300 m and 1300–1600 m deep), which were in turn, divided into six sub-reservoirs (SRs). Data on stable isotope (2H and 18O) ratios, radioactive isotope (14C) radiation in conjunction with computation of mineral–fluid chemical equilibria were used to establish the recharge source (a mountainous region in the southwestern part of Zhengzhou, 60 km away); evaluate groundwater age which varied with well depth from 15630 ± 310 a to 24970 ± 330 a; and assess the chemical equilibrium state within the system. The results of different analysis did not suggest an obvious hydraulic connection between the two main hot reservoirs. The location of the recharge zone and the geohydrologic characteristics of the study area demonstrate that the GW utilized from the system is mainly derived from confined waters of meteoric origin. 相似文献
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IntroductionDuring the past two decades much of the em-phasis in groundwater investigation and managementin industrialized countries has sllifted from problemsof groundwater supply to consideration of groundwa-ter quality. This new step is a direct reacti… 相似文献
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Adsorption studies of 1,2,4-Trichlorobenzene onto shallow aquifer media at the Luhuagang landfill site in Kaifeng,China 总被引:1,自引:0,他引:1
Wei Hong Dong Yan Zhang Xue Yu Lin Aboubacar Tabouré 《Environmental Earth Sciences》2014,71(10):4353-4362
The Luhuagang landfill site (LLS) in Kaifeng, China, lacks liner and leachate collection systems. Thus, leachate generated from the waste dump has contaminated the surrounding subsoil and shallow aquifer with various chemicals, including 1,2,4-Trichlorobenzene (1,2,4-TCB). This paper is a part of a series of studies on adsorption, transport and biodegradation and fate of 1,2,4-TCB in the shallow aquifer beneath LLS. Here, adsorption of 1,2,4-TCB onto silt, fine sand and medium sand aquifer deposits collected at LLS was conducted by performing batch experiments involving four common adsorption kinetic models. The results of the analyses showed that the pseudo-second-order adsorption kinetic model provided the best fit for the equilibrium data with a coefficient of determination (R 2) greater than 0.99. Least squares analysis of Henry, Freundlich and Langmuir linearly transformed isotherm models was used to establish the best isotherm for 1,2,4-TCB adsorption onto the three aquifer materials. The Freundlich isotherm provided the best fit for experimental data with R 2 > 0.99. The results further suggested that the highest adsorption rate of 1,2,4-TCB (27.55 μg/g) was onto silt deposit, followed by fine sand (21.65 μg/g) and medium sand (14.88 μg/g). This showed that silt layer beneath the LLS was critical for retarding the downward percolation and migration of 1,2,4-TCB into the shallow aquifer systems under the landfill. The findings of the study were adopted as basis for designing the slated transport and biodegradation study of 1,2,4-TCB in aquifer system at LLS. 相似文献
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