污水残渣经过刀组的剪切，并且多次循环，被粉碎成细小颗粒的污泥残渣。
Sewage residue after shear knife, and recycled many times, was crushed into fine particles of sludge residue.
污泥的处理处置应遵循循环经济的3R原则，即以减少污泥产生量为首要目标；
The 3R principles of circular economy should be obeyed in the selection of sludge treatment and disposal methods.
该工艺实现了炼铁污泥的循环利用，具有明显的经济效益和社会效益。
The process has good economic and social benefits due to its better circular utilization of ironmaking sludge.
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