居住小区管网系统二次给水污染的研究

对西安市部分住宅楼二次供水系统进行分析,对比了4种不同供水方式及不同管材和水力停留时间对用户水质的影响。结果表明,以水箱供水的影响较大,气压给水二次污染较小;室内供水系统中钢塑复合管优于镀锌管;停留时间以不超过6h为宜。针对小区管网系统二次污染状况,提出管网系统二次污染的防治改造对策。

Study on water pollution of secondary water supply system in residential area

Some secondary water supply systems in residential areas of Xi′ an city were analyzed,the influences of four kinds of water supply modes,different pipes and HRT on water quality were studied.The results showed that,the water pollution of secondary water supply with water tanks system was more serious than that with pressure tank system,the plastic composite pipe had a better performance than galvanized pipe when be used in indoor water supply system,the HRT was inadvisable beyond 6 h.According to the current pollution status of secondary water supply systems of residential area,some prevention and reconstruction countermeasures were proposed.