新疆若羌-且末地区地下水质量与污染评价  

Assessment of Groundwater Quality and Pollution in Ruoqiang and Qiemo Region of Xinjiang

作　　者：曾妍妍[1] 周金龙[1,2,3] 李巧[1] 赵江涛[1] 孟奇[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052 [2]中国地质大学环境学院,武汉430074 [3]中国地质科学院水文地质环境地质研究所,石家庄050061

出　　处：《新疆农业大学学报》2015年第1期72-78,共7页Journal of Xinjiang Agricultural University

基　　金：中国地质调查局(1212011220982);新疆维吾尔自治区水文学及水资源重点学科基金(xjswszyzdxk20101202)

摘　　要：采用单因子评价法对新疆若羌-且末地区2014年地下水质量进行评价,结果表明,若羌-且末地区潜水水质较差,影响潜水质量的主要因素为SO2-4、总硬度、Mg2+、TDS、Cl-等;承压水水质极差,影响承压水质量的主要因素为Na+、Mg2+、Cl-、SO2-4、总硬度、TDS和F-等。对比2014年与2003年地下水质量评价结果,进行该地区地下水无机污染评价,结果表明,潜水质量类别变差的水井占调查总井数(8眼)的37.5%,质量类别不变的占62.5%,没有质量类别变好的水井;承压水质量类别变差的水井占调查总井数(3眼)的66.7%,质量类别不变的占33.3%,没有质量类别变好的水井。根据微量有机指标的检出率进行该地区地下水有机污染评价,结果表明,9组潜水水样中三氯甲烷和1,2-二氯苯的检出率分别为22.2%和11.1%,9组承压水水样中三氯甲烷和1,2-二氯苯的检出率分别为33.3%和11.1%,其余微量有机物均未检出,三氯甲烷和1,2-二氯苯含量均低于生活饮用水标准限值。潜水污染源主要为牧草地施用的杀虫剂;承压水污染源主要为牧草地、耕地施用的杀虫剂以及城镇污水处理厂与垃圾填埋场。并提出应控制城镇污染源的影响、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 of Ruoqiang and Qiemo regions of Xinjiang in 2014.The result showed that the groundwater quality was poor. The main factors affacting groundwater quality were SO2-4 ,total hardness,Mg2+,TDS,Cl-,etc.The main factors affecting confined water quality were Na+,Mg2+,Cl-,SO2-4 ,total hardness,TDS and F-,etc.This paper evaluated the groundwater inorganic pollution by comparing the result of the evaluation of groundw‐ater quality in 2014 and 2003.The result of phreatic water pollution assessment showed that the phreatic water quality decreased,unvaried and improved account for 37.5%,62.5% and 0.0% of the eight investiga‐ted wells,respectively.The result of confined water pollution assessment showed that the confined water quality decreased,unvaried and improved account for 66.7%,33.3% and 0.0% of the three investigated wells,respectively.This paper evaluated the groundwater organic pollution firstly by the detection rate of the trace organic index.The result of phreatic water organic pollution assessment showed that the detec‐tion rates of chloroform and 1,2‐dichlorobenzene were 22.2% and 11.1% of the nine phreatic water sam‐ples.The result of confined water organic pollution assessment showed that the detection rates of chloro‐form and 1,2‐dichlorobenzene were 33.3% and 11.1% of the nine confined water samples.The rest of the trace organics had not been detected,the detected contents of chloroform and 1 ,2‐dichlorobenzene were lower than limitation value of drinking water standard.The main pollution source of phreatic water was the application of insecticide in grassland.The main pollution sources of confined water were the insecticide ap‐plied in grassland and farmland,urban sewage treatment plant and landfill.Finally,several proposals for ra‐tional utilization groundwater were put forward,such as preventing the influence of the town pollution sources and the groundwater polluted by agricultural activities,etc.

关 键 词：地下水质量 地下水污染 三氯甲烷 1 2-二氯苯 新疆若羌G且末地区 

分 类 号：P641.8[天文地球—地质矿产勘探]