二次供水水质污染的现状及防治措施分析

二次供水存在的问题主要是水质污染问题，其污染表现在肉眼可见物及红虫、浊度及色度、微生物、有机物、加氯副产物、余氯等指标超标。二次供水污染的原因有设计、施工和管理等方面。防治二次供水污染可通过提高自来水厂出厂水水质、发展分质供水、独立设置生活与消防水池（水箱）、减小生活水池（水箱）停留时间、正确设计与施工水池（水箱）、在适当地区直接补压供水、增加二次供水处理设施和加强管理监督等措施来实现。

Actualities of water recontamination in secondary water supply and analysis of measures in prevention and treatment

The problem of secondary water supply is water recontamination, It embodys that substance which can be seen, red worm, turbidity, chronra, microbe, organism, disinfection byproduct, residual chlorine etc. exceed water quality standard. The reasons of water recontamination in secondary water supply include design, construction , management etc. Measures that prevent water recontamination are improving water quality supplied, developing water supply of different water quality, setting living and fire fighting water tank independently, reducing resident time of living water tank, designing and constructing water tank correctly, increasing water press directly in proper area, enhancing establishment of secondary water supply, strengthening management and supervisal etc.