日韩一区二区三区,天天日b夜夜操B,久久综合久久爱久久综合,青青热久免费精品视频在线,国产牛人潜入在线播放,天天影视网天天综合色,久久精品国产亚洲一区二区,狠狠综合久久综合88色,亚洲精品国产一区二区三区色噜噜,国产一级特黄大片

Concept: Softening water aims to reduce the hardness of water through physical or chemical means. The hardness of water is mainly composed of cations such as calcium and magnesium. In the process of softening water treatment, the composition and structure of sulfates and chlorides that are prone to scale formation will be changed, making them less prone to scale formation during water heating and evaporation, thereby reducing the hardness of water and achieving the purpose of softening.

General process: The specific methods for softening water treatment include ion exchange method, heat exchange method, chemical precipitation method, and reverse osmosis method, etc