The main pollutant of this kind of sewage is oils, polluter of the suspended substance and dissolving organic matter.

这类污水的主要污染物是油类、悬浮物污染物质及溶解性有机物。

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The main pollutant of this kind of sewage is oils, polluter of the suspended substance and dissolving organic matter.

这类污水的主要污染物是油类、悬浮物污染物质及溶解性有机物。

youdao