从管网供水漏失率分析乡镇供水现状

分析了目前乡镇供水回收率普遍偏低的主要原因：供水主管线老化，深井水硬度较大造成管道严重结垢、渗漏，年久失修；规范中乡镇供水标准制定偏高，与实际使用情况不符，造成供水量与用水量的不平衡；乡镇水厂管理水平低，出现以小带大的管线设置，增加了水头损失，降低了供水压力。提出了加强乡镇技术管理水平和对老管线进行测漏排查的建议，以期为合理规划乡镇用水量标准提供参考依据。

Analysis on Present Status of Water Supply to Towns Based on Leakage Rate in Pipe Network

The main reasons of low water supply recovery rate in rural towns were analyzed. The ageing of main water supply pipeline and higher hardness of deep well water result in serious pipe scaling, and the pipe leaking seriously because of long-period negligence and disrepair. The water supply requirement for rural towns in the standard is too high, so it is not fit for the fact and causing the unbalance between water supply and demand. The management level of rural town waterworks is low and the establishment of partial pipeline is unreasonable, such as small pipe connected with big one, it will increase head loss and reduce the hydraulic pressure. According to the above, some rationalization proposals to strengthen the management and technical levels in rural towns, and to take leak investigation for the old pipeline were given to provide a reference basis for reasonably planning the water consumption standard in rural towns.