This paper expounds the adaptibility of coarse sand filter with simultaneous air and water backwash to tertiary filtration plant.
阐述了粗石英砂气水同时冲洗滤池，在污水深度处理中的适用性。
This paper expounds the adaptibility of coarse sand filter with simultaneous air and water backwash to tertiary filtration plant.
阐述了粗石英砂气水同时冲洗滤池，在污水深度处理中的适用性。
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