由于每一过滤周期内形成的滤饼层很薄，可明显提高平均滤速。

Because the cake layer is very thin each filter cycle, it can significantly improve the average filtration rate.

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该投加点面临的主要问题是活性炭穿透滤料层以及水头损失过快增长导致滤池过滤周期的大幅度缩短。

The major problems in this technology are PAC penetrating filter material layer and the great shorten of the filter cycle owing to the growth rate of filter head loss is so quickly.

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纤维滤料与匀质滤料相比，纤维滤料在过滤速度、截污容量、过滤精度、过滤周期等方面均有明显的优势。

Compared with the uniform media filter, the fiber filter has obvious advantages in filtration rate, sewer capacity, filtration precision and filtration cycle, etc.

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