新疆和田地区地下水质量与污染现状评价

Assessment of Groundwater Quality and Pollution in Hotan Region of Xinjiang

采用单因子评价法对新疆和田地区2011年地下水质量进行评价,结果表明:新疆和田地区地下水水质较差,影响地下水质量的天然化学组分主要为总硬度、SO2-4、Cl-、CODMn和氨氮等。根据2011年与2003年新疆和田地区地下水质量评价结果,进行该地区地下水污染评价,结果表明:2011年与2003年相比,质量等级变好、不变和变差的井点分别占调查总井数的14.3%、57.1%和28.6%。从自然因素和人为因素两个方面分析了和田地区地下水质量较差及水质劣化的原因,并提出应防止集中开采区地下水超采、防止地下水受农业活动污染等合理开发利用该地区地下水的建议。

This study used the single-factor evaluation method to evaluate the groundwater quality of2011 in Hotan region of Xinjiang. The result shows that the groundwater quality is poor. The main influence factors of groundwater quality in natural chemical composition are total hardness,SO2-4,Cl-,CODMnand ammonia nitrogen,etc. This paper evaluated the groundwater pollution by the result of the evaluation of groundwater quality in 2011 and 2003. The result of groundwater pollution assessment shows that the improved,unvaried and degraded groundwater quality account for 14. 3%,57.1% and 28.6% respectively of the total investigated wells. The reasons for poor groundwater quality and pollution of Hotan region were analyzed from the two aspects of natural factors and human factors,and several proposals for ration al utilization groundwater were put forward,such as preventing the groundwater overexploitation in concentration exploitation area and the groundwater polluted by agricultural activities,etc.