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目的对中山市新建二次供水设施工程进行卫生学评价,研究相关工程技术措施,为二次供水工程建设提供依据;并针对本市二次供水设施工程现状提出提升二次供水工程建设水平的相关技术措施。方法依据国家相关规范标准,对相关项目的设计资料、现场调查情况、水质抽检结果等进行评价。结果大部分二次供水设施据初步评价建议进行了改善,经规范冲洗消毒水样抽检合格率100.00%。新、旧设施的水质检测结果比较,新设施水质显著提高:浑浊度2008年u=4.48,P<0.01;2009年u=8.52,P<0.01;差异均有统计学意义。耗氧量:2008年u=6.72、P<0.01;2009年u=6.16、P<0.01;差异均有统计学意义。结论二次供水的卫生安全保障、设施的规范建设、有效的监管非常重要,必须高度重视。
Objective To evaluate the hygienic conditions of the new secondary water supply facilities in Zhongshan City and to study the related engineering measures to provide the basis for the construction of the secondary water supply projects and to improve the level of the secondary water supply projects according to the status quo of the secondary water supply facilities in this Municipality Technical measures Methods Based on the relevant national standards, the design information of relevant projects, field investigation, water quality sampling results were evaluated. Results Most of the secondary water supply facilities were improved according to the preliminary evaluation recommendations. The passing rate of disinfecting water samples was 100.00%. The water quality of the new facility and the old facility were significantly improved compared to the new facility. The turbidity of the new facility in 2008 was u = 4.48, P <0.01; u = 8.52 in 2009, P <0.01; the difference was statistically significant. Oxygen consumption: 2008 u = 6.72, P <0.01; 2009 u = 6.16, P <0.01; the differences were statistically significant. Conclusion It is very important to ensure the health and safety of secondary water supply, standardize the construction of facilities, and supervise them effectively.