用窄点原理进行节水分析

简要地对窄点原理进行了介绍。用窄点原理对工程设计进行了具体分析，在排污量相同的情况下，分别采用洁净水接纳污染物、采用满足进水浓度要求但无回用的废水接纳污染物和采用窄点技术且可回用废水但无水处理过程的废水接纳污染物三种供水方式。比较不同的供水方式所需的不同耗水量。从而得出窄点分析原理对节水，节能和降污保护环境具有的重大意义。

Pinch Analysis Principle for Reduction of Water Use

This paper introduced the pinch analysis principle briefly. The engineering designs have been elaborated by using pinch analysis .The water consumption has been compared with each others though different water supplies in the same amount of contaminant mass load. The contaminants are contained by clean water for each stage, maximum allowable contaminant concentration in the inlet water without recycling wastewater and using water reuse but without wastewater regeneration, the pinch analysis is used in the last approach. It is thought that pinch analysis should be widely popularized to reduce water and energy requirements to protect environment.