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目的通过分析周宁县自来水公司水质检测报告,了解城区居民生活饮用水水质状况,为饮水卫生提供依据。方法统计分析2003—2010年县自来水公司水质检测数据,按GB 5749-1985和GB 5749-2006《生活饮用水卫生标准》进行评价。结果周宁县2003—2010年自来水公司水质总合格率为87.5%,其中水源水合格率100.0%,出厂水88.8%,末梢水78.7%。感官性状和一般化学指标及微生物指标合格率较高(96.0%～99.2%);游离氯合格率为54.7%,二氧化氯合格率为100.0%。二氧化氯消毒各项指标合格率均为100%;漂白粉消毒合格率出厂水为83.3%、末梢水62.8%、浑浊度93.4%、总大肠菌群93.4%。结论饮用水二氧化氯消毒法优于漂白粉消毒。
Objective To analyze the quality of drinking water in urban areas by analyzing the water quality test report of the water company in Zhouning County and provide the basis for drinking water hygiene. Methods Statistical analysis of water quality testing data of county water company from 2003 to 2010 was conducted according to GB 5749-1985 and GB 5749-2006 Standard of Drinking Water Quality. Results The overall qualified rate of water quality of the water company in Zhanning was 87.5% in 2003-2010. The qualification rate of water source water was 100.0%, that of the ex-factory water was 88.8% and that of the peripheral water was 78.7%. Sensory traits and general chemical indicators and microbial indicators pass rate higher (96.0% ~ 99.2%); free chlorine passing rate of 54.7%, chlorine dioxide pass rate of 100.0%. Chlorine dioxide disinfection indicators pass rate of 100%; bleach disinfection pass rate of 83.3% factory water, tip water 62.8%, turbidity 93.4%, total coliform 93.4%. Conclusion Chlorine dioxide drinking water disinfection is better than bleach disinfection.