恭桶背水箱储水回流情况调查徐卫峰有居民反映，自来水呈兰色并有异味。经查，可能系楼内居民在恭桶背水箱内投放了除臭剂，当管网供水有间断时，背水箱储水回流而引起。为此，对恭桶背水箱进行了调查，并选择有代表性的背水箱配件进行了实验。调查８家批发部和经营部，主... Kung bucket backwater tank water backflow survey Xu Weifeng residents reflect the tap water was blue and smell. After investigation, may be building residents in the cask barrel backwater tank put deodorant, when the pipe network is interrupted, the backwater caused by water storage back. To this end, the investigation of the cask barrel backwater tank, and choose a representative backwater tank accessories for the experiment. Investigate 8 wholesale department and business department, master ...