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目的了解大连市生活饮用水水质卫生状况。方法按照GB 5749-2006《生活饮用水卫生标准检验方法》采集的不同供水点生活饮用水进行检测的。结果 2013年共检测水样744份,合格率为45.56%。城市与农村生活饮用水的合格率分别为92.31%,20.63%(P<0.01)。市政管网末梢水合格率89.29%低于市政供水出厂水合格率100.00%,城市单位自备供水合格率75.00%,农村集中式供水合格率21.56%,农村学校自建供水合格率11.36%。城市检测合格率较低的项目有:浑浊度(94.32%)、铁(98.48%)、余氯(98.48%);农村检测合格率较低的项目有:余氯(26.67%)、硝酸盐(80.63%)、总大肠菌群(90.83%)、菌落总数(91.04%)。结论城市重点加强自来水管网清洁维护及加强单位自备水卫生监管。应加大农村生活饮用水监管力度,确保农村集中式供水卫生消毒制度落实。
Objective To understand the sanitary status of drinking water in Dalian. Methods According to GB 5749-2006 “drinking water health standards test methods” collected at different water points drinking water for testing. Results A total of 744 water samples were tested in 2013, with a pass rate of 45.56%. The passing rates of urban and rural drinking water were 92.31% and 20.63%, respectively (P <0.01). The qualified rate of peripheral water of municipal pipe network was 89.29% lower than that of municipal water supply factory with the passing rate of 100.00%. The qualified rate of supplying water by urban units was 75.00%. The qualified rate of centralized water supply in rural areas was 21.56% and that of rural schools was 11.36%. The lower passing rate of urban testing projects are turbidity (94.32%), iron (98.48%) and residual chlorine (98.48%). The low pass rate of rural testing includes residual chlorine (26.67%), nitrate 80.63%), total coliforms (90.83%), the total number of colonies (91.04%). Conclusion The city focused on strengthening the clean water pipe network maintenance and strengthening self-owned water hygiene supervision. We should increase the regulation of drinking water in rural areas and ensure the implementation of the system of sanitation and disinfection of rural centralized water supply.