气水反冲洗承托层优化试验研究

STUDY ON OPTIMIZATION OF THE SUPPORTING LAYER OF FILTER MEDIA FOR AIR-WATER BACKWASHING FILTER

本文针对气水反冲洗条件下承托层扰动现象,对可能的四种承托层结构形式进行了试验研究,得出以“正粒度”和“反粒度”交合配置的承托层是适合气水反冲洗的最优化方法,并给出了实用的参数.

Always the supporting layer (SL) of filtering media of the filter is disturbed during air-water backwashing operation. Aiming to solve this problem SLs of four different structures were researched with experimentation and it is summed that SLs of alternated structure of normal and inverse grainages are optimal for air-water backwashing and the practical parameters for design have been available.