Papermaking wastewater was treated by process of pre oxidation coagulating sedimentation in the study.
采用预氧化混凝沉淀法处理制浆造纸废水。
Therefore, filtering of abrasive matter required pre-treatment stages such as pre-filtration, centrifuging, or sedimentation in order to protect the membrane.
因此为了保护膜层，在过滤含有磨损性物质的料液时，必须对料液通过初过滤、离心分离或沉降等方法进行预处理。
Therefore, filtering of abrasive matter required pre-treatment stages such as pre-filtration, centrifuging, or sedimentation in order to protect the membrane.
因此为了保护膜层，在过滤含有磨损性物质的料液时，必须对料液通过初过滤、离心分离或沉降等方法进行预处理。
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