Activated sludge reactors and trickling filters are the most commonly used biological process.

活化污泥反应器和生物滤池是最常用的生物法。

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The other is the study of domesticated activated sludge disposing wastewater containing high salinity and high concentrations of metal irons.

第二部分则主要研究了驯化活性污泥对高盐度、高金属离子浓度的实际废水的处理过程。

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But the conventional activated sludge process technology has some shortcomings: long water residence time, low processing power per unit area, large area reactor, sludge bulking and so on.

但是传统的活性污泥法工艺存在工艺流程长、污水停留时间长、单位面积处理能力低、反应池占地面积大、污泥膨胀等缺点。

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Researchers say this could eventually change the way that wastewater is treated all over the world, replacing the widely used "activated sludge" process that has been in use for almost a century.

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