分质供水的模式与应用

摘要

为解决城市供水资源短缺问题、优化水资源的利用,分质供水逐渐成为城市供水系统的重要组成部分.该文以供水范围和供水目的等为划分依据,把分质供水分为小分质供水-直饮水系统、小分质供水-中水系统、大分质供水-直饮水系统和大分质供水-优水优用系统,并对这四种供水模式的特点、目的、应用情况及存在问题进行分析.通过比较分析这四种模式的优缺点,最后指出我国未来改善饮水水质的大方向是城市集中提供优质水,但需根据我国国情,因地制宜地分阶段、分步骤逐步加以实现.%Dual water supply is becoming more and more important in solving the city water resources. Based on water supply range and its purposes, dual water supply may be divided into four patterns, such as small-range-drinking-water system, small-range-grey-water system, large-range-drinking-water system and large-range-dual-water system. In this paper characteristics, purpose, usage and problems of these four patterns were analyzed. Finally, the ultimate goal of water supply in China is to provide high-quality water in the whole city.