2010年-2012年青岛市崂山区农村集中式供水水质监测结果分析

Analysis on quality surveillance results of rural centralized water supply in Laoshan district of Qingdao during 2010-2012

目的了解崂山区农村集中式供水水质卫生状况,为加强农村饮水安全工程建设和管理提供科学依据。方法于2010年-2012年在崂山区选取20个集中供水点,于枯水期和丰水期分别进行水样采集和检测。结果三年共采集检测水样600份,总合格率为42.8%;丰水期和枯水期水样合格率差别有统计学意义(χ2=39.3,P<0.01);完全处理和未完全处理水样合格率差别有统计学意义(χ2=45.6,P<0.01);共检测19项指标,不合格指标9项,其中浑浊度、菌落总数、总大肠菌群和耐热性大肠菌群在不同水期、不同处理方式之间差别具有统计学意义。结论崂山区农村集中式供水水质合格率较低,以细菌学指标超标为主,枯水期合格率高于丰水期,经过完全处理的水样合格率高于未完全处理的水样。

Objective To understand the hygienic condition of rural centralized water supply in Laoshan district and provide a scientific basis to strength the construction and management of rural drinking water safety projects. Meth- otis Twenty centralized water supply points were monitored during 2010 -2012, and the water samples were re- spectively sampled and tested in the dry season and wet period each year. Results Six hundred water samples were detected in the 3 years, the total qualified rate was 42.8%. The qualified rates between the dry season and wet sea- son was statistically significant （X2 = 39.3, P 〈 0.01 ）. The qualified rates between the fully and non -full processed water samples was statistically significant （X2 =45.6 ,P 〈 0.01 ）. A total of 19 items were detected, 9 items were unqualified, the main unqualified items were turbidity, total bacterial count, total coliforms and heat - resistant coli- form bacteria, the differences between them in different water periods and treatment approach were statistically sig- nificant. Conclusion The qualified rate of rural centralized water supply was low in Laoshan distract, the main un- qualified items were bacteriological indexes, the qualified rate of water in dry season was higher than wet season, and that of the fully processed water samples was higher than non - fully processed samples.