Evaluation of the impact of an uncontrolled landfill on surrounding groundwater quality, Zhoukou, China
文献类型：EI期刊论文
| 作者 | Han Dongmei |
| 发表日期 | 2014 |
| 关键词 | Groundwater pollution Aquifers Chlorine compounds Groundwater resources Leachate treatment Models Principal component analysis Solvents Water levels Water quality |
| 英文摘要 | Our groundwater pollution investigation of an uncontrolled municipal landfill aims to better understand the possible impact of leachate percolation on groundwater quality. The study examined groundwater inorganic contamination around a municipal landfill site in Zhoukou city, Henan province, China. Stable isotopic compositions (18O and 2H) and concentrations of various physico-chemical parameters were determined in surface and groundwater samples collected from the study area. 18O and 2H compositions reveal that elevation effects and/or evaporative processes occur to various extents prior to water reaching the saturated zone. There is no serious heavy metal contamination in this area. Principal component analysis was applied, and identified TDS, Cl-, NH4+, Fe and Mn concentrations as the main indicators of groundwater pollution caused by landfill leachate percolation. The groundwater quality of shallow aquifer is likely dominated by irrigation return flow in the summer. A two-dimensional advective-dispersive transport model was established using MODFLOW and MT3DMS to explore the controls on contaminant transport. Chloride transport simulations with steady state and transient flow models show that the contamination plume is still constrained in the upper aquifer after 13years of operation of the landfill. The contrast between the simulated (relatively short) migration distance of the chloride plume, and the widely observed high chloride concentrations in the upper aquifer indicate other possible local contributions to the salinity of the aquifer. The transient model indicates that seasonal dynamics, such as temporal water level variations, may have a great influence on the migration of the plume beneath the landfill by controlling vertical hydraulic gradients and fluxes. In general, the shallow groundwater (within 30m depth) around the Zhoukou landfill is not suitable for drinking, and pollution control should be improved and enhanced in this area. 2013 Elsevier B.V. |
| 出处 | Journal of Geochemical Exploration
 |
| 卷 | 136页:24-39 |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/31267]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Han Dongmei. Evaluation of the impact of an uncontrolled landfill on surrounding groundwater quality, Zhoukou, China. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
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