还进行了为期21天的连续过滤试验，发现滤床在高水力负荷条件下能持续地去除景观水中的磷。
In column experiment during 21 days, it was observed that the granulated fly ash could continuously remove the phosphorus under high hydraulic loading rate.
按各个部位反滤的工作条件和重要性，将反滤分为关键性反滤和非关键性反滤。
According to the working condition and the importance of filter at each location, filters are classified as key filter and non-key filter.
通过计算还得到了不同处理风量和过滤介质表观渗透率条件下，各滤袋组过滤速度和颗粒沉积量分布规律。
The filtration velocity and the quantity of particle accumulated on each bag group are also disclosed under different filter media permeabilities and inlet flow rates.
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