filter backwashing

• 滤池反冲洗

filter backwashing的用法和样例：

例句

1. This research is designed for comparing the flocculation and sedimentation of water treatment when backwashing water is recycled and treated together with raw water.
   研究了滤池反冲洗水和原水混合一并处理时，反冲洗水的加入对水处理混凝沉淀的影响。