水挟点技术研究进展

Progress of Water Pinch Technology Research

废水减量是通过改进流程尽量以减少废水生成量而节约水资源的环保课题。在国外，水挟点技术（简写为ＷＰＴ），用于废水减量问题的研究，已经发展到一定深度，并已成功地用于多个工厂的废水减量问题。但是，在国内这方面的研究尚处于空白阶段。为了使广大科技工作者了解这方面的研究进展，本文着重介绍了水挟点技术的基本原理、发展过程、现状及展望。

This paper addressed the minimization of wastewater in the process industries. The approach can lower the demand to freshwater and the quantity of wastewater by process improvment. In abroad,water pinch technology has successfully been applied to this area and achieved great benefits in several plants. However, in domestic this approach is still nonexistent. So, it is necessary for the home scientific researchers to learn the development in this aspect. Here, we introduce the principle,development and prospect of WRY.