Activated Sludge Process is applied more and more extensively, with rate of treated sewage rising.

随着我国城市污水处理率的逐年上升，活性污泥法的应用越来越广泛。

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Activated Sludge Process is applied more and more extensively, with rate of treated sewage rising.

随着我国城市污水处理率的逐年上升，活性污泥法的应用越来越广泛。

youdao