"Sewage sludge" means sludge arising from urban effluent treatment plant and includes pretreatment waste, scourings and unstabilised sludge.

“下水道淤泥”，是指经城市污水处理厂产生的淤渣，包括预处理的废物、污垢和性质不稳定的淤泥。

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Oily waste and Plant aqueous effluent collection, storage, treatment and disposal.

含油污水和工厂污水的收集，储存，处理及排放。

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Treating combined sewage effluent from a secondary treatment plant, the process achieved 94.5% cadmium removal for the trace quantities present .

用这种方法处理二级处理厂排出的综合下水，可除去水中含镉量的94.5。

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Your report measures watershed quality and I assume that runs well north of the city where small towns may not do as good a job depositing their treatment plant effluent.

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