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通过不同氨氯比例消毒后不同时间的效果观察和３０份出厂水的总余氯、自由性余氯、结合性余氯、细菌总数和总大肠菌群数的测定，结果发现氨氯比例为１：５时，在消毒３０分钟后，观察至１５０分钟，总余氯均维持在０．４ｍｇ／Ｌ以上。利用累积频率概率制图与直线回归方程求得当细菌学指标符合国家标准、余氯为０．３ｍｇ／Ｌ时，总余氯量应为１．４１ｍｇ／Ｌ，可作为现阶段生活饮用水卫生标准的总余氯建议值。并提出目前执行的出厂水余氯０．３ｍｇ／Ｌ可改为０．２ｍｇ／Ｌ的可能性
The effect of different ammonia-chlorine disinfections at different times and the determination of total residual chlorine, free residual chlorine, residual chlorine, total bacteria and total coliform bacteria in 30 water samples were determined. The results showed that the ratio of ammonia to chlorine was 1 : 5, after disinfecting for 30 minutes, observed to 150 minutes, the total residual chlorine were maintained at 0.4mg / L or more. Calculated using the cumulative frequency of probability mapping and linear regression equation obtained when the bacteriological indicators in line with national standards, residual chlorine is 0.3mg / L, the total residual chlorine should be 1.41mg / L, can be used as the current standard of drinking water health Total residual chlorine recommended value. And put forward the current implementation of the factory water chlorine 0.3mg / L may be changed to 0.2mg / L possibilities