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二次供水是生活饮用水二次供水的简称,是通过二次供水设施间接向用户供给生活饮用水的行为[1]。二次供水设施是城市供水管理内容重要组成部分,其主要任务是解决供水管网未梢、高层及小高层建筑和特殊性区域用水问题。由于二次供水是自来水厂——市政管网——二次供水设施——用户供水过程中相对比较开放的环节,比较容易受到污染。有文献报道,近年来二次供水水质污染事件层出不穷,主要表现在水质浑浊、水体发红、有异味、甚至有红线虫等,如何防止二
The secondary water supply is the abbreviation of the secondary water supply for domestic drinking water, which is the act of supplying drinking water indirectly to the users through the secondary water supply facilities [1]. The secondary water supply facilities are an important part of urban water supply management. Its main task is to solve the problem of unswept water supply pipelines, high-rise and small high-rise buildings and special areas. Because the secondary water supply is a relatively open part of the water supply plant - municipal pipe network - secondary water supply facilities - users of the water supply process, relatively easy to be polluted. It has been reported in the literature that in recent years, there are numerous water pollution incidents after the secondary water supply, mainly manifested in the muddy water quality, reddening of the water, odor, and even the occurrence of red worms.