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。
It also provides for digestion and storage of secondary sludge solids.
同时可以为消化并存放二级污泥固体。
Sludge which settles in the secondary clarifier is picked up by the sludge scoop and can flow by gravity to digestion and storage facilities.
沉降在二沉池中的污泥被污泥铲铲起由于重力流入污泥消化储存设施中。
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