申请公布号：JP5499185(B2)

申请号：JP20120554175

申请日期：2010.02.25

申请公布日期：2014.05.21

分类号：B01D21/24;B01D21/00;B01D21/01;B01D21/08;B01D21/18;B01D21/26;B01D21/32

主分类号：B01D21/24

摘要：A process for water treatment, including a combination of methods from the group comprising coagulation, sedimentation, flocculation and ballast flocculation, which is further improved by the addition of a simplified sludge recirculation system. The recirculation system corresponding to this process allows higher sludge density as well as less significant water volume losses by making the sludge accumulating at the bottom of the sedimentation zone go through a hydro cyclone a certain number of times in repeated cycles thus augmenting the solid particles density of the extracted sludge. The system may also be controlled by a suspended solid analyser, a flow meter and/or a timer. The present invention also includes a method of producing specific fluid flow control behaviour with this simplified sludge recirculation system, which furthermore improves the efficiency of the process.

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