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水是生命的源泉,是人们赖依生存息息相关不可缺少的物质。不论是城市还是铁路供水,它的来源不外有两大类:一是地表水即江河湖泊水;二是地下深井水。但由于水域常常会受到不同程度的污染,尤其是地表水,受污染的机会更多,即使是深井水,也存在地表污水渗入的问题,在提升、输送、贮存中又有人为污染的可能而变为不洁水,致使水中含有大量的致病细菌,造成疾病的传播、扩散,危害着人民身体健康等不良后果。因此防止水中病源的生产、传播、保证生活饮用水中不含有各种病菌和杀死及抑制水中残存细菌的再度繁殖,需对水质进行消毒。
Water is the source of life and is indispensable for people’s survival. Whether it is a city or a railroad, there are two main sources of its source: First, surface water, ie, rivers and lakes, and second, underground deep wells. However, due to the fact that waters are often subject to varying degrees of pollution, especially surface waters, there are more opportunities for pollution. Even deep well waters have the problem of infiltration of surface water, and there is also the possibility of pollution in lifting, transportation and storage. It becomes impure water, which causes a large number of pathogenic bacteria in the water, which causes the spread and spread of the disease and endangers the adverse health effects of the people. Therefore, it is necessary to prevent the production and spread of pathogens in water, ensure that drinking water does not contain various germs, and kill and inhibit the repopulation of residual bacteria in water.