酒泉市肃州区2012年-2014年农村生活饮用水水质监测结果分析

Analysis of water quality monitoring results of rural drinking water in Suzhou district of Jiuquan during 2012-2014

目的了解肃州区农村生活饮用水水质卫生状况,为加强农村饮水安全工程建设和管理提供科学依据。方法对2012年-2014年全区农村饮水安全工程供水点枯水期和丰水期水样进行采集检测并统计分析。结果 3年共采集水样268份,总合格率为67.5%;2014年水样检测合格率最高,为82.3%,与2012年、2013年合格率相比差异具有统计学意义(χ2=17.72、12.74,P<0.01);丰水期水质合格率高于枯水期,差异无统计学意义(χ2=0.43,P>0.05);出厂水与末梢水水样合格率基本一致。每份水样共检测31项指标,不合格指标7项,其中总硬度、硫酸盐、总大肠菌群为主要不合格指标,合格率均<90%。结论肃州区农村饮用水水质合格率较低,2014年经全面更新消毒净化设施后,水质合格率显著提高。今后应根据水质的硬度和微生物超标状况有针对性地提高农村饮水安全工程建设项目质量,改进工程运行管理模式,确保工程长期发挥效益,保障居民饮水安全。

Objective To understand the health status of rural drinking water quality in Suzhou district,so as to provide scientific basis for strengthening the rural safe drinking water project construction and management. Methods Sample collecting test and statistic analysis were performed on water points in low water period and high water period samples from the rural drinking water safety project during 2012- 2014. Results A total of 268 water samples were collected during the 3 years with the total qualified rate of 67. 5%; in 2014 the water qualified rate was 82. 3%,compared with 2012 and 2013,the differences of the qualified rates were not statistically significant（ χ2= 17. 72,12. 74,P〈0. 01）; the water qualified rate in the wet season was higher than that in the dry season,and the difference was no statistical significance（ χ2= 0. 43,P〈0. 05）; the qualified rates of treated water and peripheral water sample were basically the same. A total of 31 test indexes were detected on each sample,and there were 7 unqualified indexes,including total hardness,sulfate,total coliform group as the main unqualified index,the qualified rate were all less than 90%. Conclusion In Suzhou district the rural drinking water qualified rate is relatively low,in2014 by the comprehensive update of the disinfection and purification facilities,the qualified rate of water increased significantly. In the future we should be base on the water with high hardness,microbial exceed the standard condition,improve the construction of rural drinking water safety project engineering quality,improve the operation and management mode of engineering project,so as to ensure the long- term benefit and protect the safety of drinking water.