"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。
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。
Kesults of one years' surveillance on affluent and effluent virus content in sewage passing through the Shanghai County sewage Treatment plant are reported.
作者对上海县污水处理厂进出厂污水中病毒含量进行了为期一年的检测。
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