适宜山丘区分散供水的消毒技术模式尚未系统建立。为进一步保障分散式供水水质，按照前置净水与紫外线消毒相结合的原则开发桶式紫外线消毒装置。桶式紫外线消毒装置以低压高强度的紫外灯为核心，以前置PP棉过滤器和活性炭过滤器为水质保障单元，并在华北地区某山丘区分散户进行安装应用。结果表明，桶式紫外线消毒效果可靠，原水总大肠菌群90CFU/100ml情况下，紫外灯开启5min/h可有效保障出水微生物安全性，年运行成本仅110.56元，运行维护简便，具有广阔的应用前景。

At present,the mode of appropriate disinfection technology in decentralized water supply engineering has not yet been established. To improve water quality of decentralized water supply systems,combined with pre-water treatment and ultraviolet disinfection,based on low -pressure and high intensity ultraviolet and water quality security unit (PP cotton filter and activated carbon filter),barrel-type ultraviolet disinfection device is developed in this paper. The actual application effect of barrel-type ultraviolet disinfection device is studied in a household water supply system of northern area. Results show that the barrel-type ultraviolet disinfection device can guarantee the water microbial safety effectively. The ultraviolet lamp radiated 5 min /h can kill 90 CFU/100 mL total coliforms in raw water. The barrel-type ultraviolet disinfection device has a broad application prospect with simple maintenance and low annual running cost.