【Key words】 sludge anaerobic digestion; sludge pretreatment; irradiation; ozone process; chemical process; mechanical process
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"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。
This system operates in conjunction with pretreatment and sludge solids disposal or storage facilities.
该系统要与预处理系统、污泥固体处理系统或存放设备一起运行。
A pretreatment tank can also serve to store secondary sludge.
预处理池也可以用于储存二级污泥。
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