地震灾区乡镇集中式供水不同应急消毒措施的效果
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摘要
目的探讨地震灾区乡镇集中式供水应急消毒措施,确保灾后生活饮用水质量。方法采用简易持续加氯装置法等应急消毒措施,通过余氯比色测定法检测分析了汶川地震灾区3个乡镇集中式供水质量情况。结果将含氯消毒片装入简易加氯装置内放于供水系统中,能很快使水中加氯量满足要求(1.0 mg/L左右),每间隔2 d加氯1次,可保持余氯量满足消毒要求(0.3 mg/L~0.5 mg/L)。经连续监测3个乡镇集中式供水站蓄水池水中余氯量合格率为100%,末稍水余氯量合格率达到93.2%。结论简易加氯装置适合地震灾区乡镇集中式供水应急消毒,可以确保灾区供水系统卫生质量。
Objective To explore the central water supply emergency disinfection measures for earthquake-stricken villages and towns in order to ensure the post-disaster quality of drinking water.Methods Emergency disinfection measures such as simple continuous chlorination installation method were used.The quality of water in central water supply of the three earthquake-stricken Wenchuan villages and towns was examined and analyzed by residual chlorine colorimetric assay.Results After the simple chlorination unit containing chlorine disinfection tablets was put in the water supply system,the chlorine content of the water quickly rose to meet the requirements(1.0 mg / L or so).Adding chlorine at the interval of two days could keep the residual chlorine fulfilling the disinfection requirement(0.3 mg/L ~ 0.5 mg/L).By continuous monitoring of the water in water store pools of the central water supply station,the elgible rate of residual chlorine was 100%,and the eligible rate of residual chlorine in end water reached 93.2%.Conclusion Simple chlorination equipment is suitable for emergency disinfection of earthquake-stricken villages and towns central water supply,and can ensure the hygienic quality of water supply systems in affected areas.
Objective To explore the central water supply emergency disinfection measures for earthquake-stricken villages and towns in order to ensure the post-disaster quality of drinking water.Methods Emergency disinfection measures such as simple continuous chlorination installation method were used.The quality of water in central water supply of the three earthquake-stricken Wenchuan villages and towns was examined and analyzed by residual chlorine colorimetric assay.Results After the simple chlorination unit containing chlorine disinfection tablets was put in the water supply system,the chlorine content of the water quickly rose to meet the requirements(1.0 mg / L or so).Adding chlorine at the interval of two days could keep the residual chlorine fulfilling the disinfection requirement(0.3 mg/L ~ 0.5 mg/L).By continuous monitoring of the water in water store pools of the central water supply station,the elgible rate of residual chlorine was 100%,and the eligible rate of residual chlorine in end water reached 93.2%.Conclusion Simple chlorination equipment is suitable for emergency disinfection of earthquake-stricken villages and towns central water supply,and can ensure the hygienic quality of water supply systems in affected areas.
引文
(1)中华人民共和国卫生部.国家生活饮用水卫生标准GB5749-2006[S].中国国家标准化委员会,2006:6.
(2)朱鸿斌,程娟,赵大余,等.四川省“5.12”地震灾区饮用水卫生情况分析[J].预防医学情报杂志,2008;24(11):849.
(2)朱鸿斌,程娟,赵大余,等.四川省“5.12”地震灾区饮用水卫生情况分析[J].预防医学情报杂志,2008;24(11):849.
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