bed filtration meaning in Chinese

多层过滤

Deep bed filtration is an important unit operation in water treatment technique
摘要深层过滤是水处理工艺中的重要单元操作。
Filtration is one of important operation units in water treatment operation process , and the sand granule used in the deep bed filtration is the key to perform a satisfied capacity
过滤是给水处理中?个重要的单元操作过程，其中滤料是滤池的核心，它的选择直接影响滤池的过滤特性。
In designing the deep bed , the empirical formula l / de = 800 is used as the basis . however , it has been proved that the formula cannot precisely describe the functional relationship and the correlation degree between the nitration behavior of the deep bed filtration process , the depth of the deep bed and the diameter of the sand granule , and it is restricted greatly in the practical application of finding a suitable depth of the deep bed
目前，滤池的设计通常采用经验公式i d _ e = 800作为设计滤池厚度的依据，但实践证明此经验公式还不能准确地反应滤池过滤特性与滤池深度l 、滤料粒径d的相关关系及相关程度，在实际应用中受到很大限制。