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    • 5. 发明授权
    • Method and apparatus for enhancing filter bed performance
    • 提高滤床性能的方法和装置
    • US07163630B2
    • 2007-01-16
    • US11126433
    • 2005-05-10
    • Dennis ChilcoteMichael S. GratzRobert CliffordJohn MillsGregory VineretskyDaniel Mc GrawAlan DunnBobby DabbsKarie Mars
    • Dennis ChilcoteMichael S. GratzRobert CliffordJohn MillsGregory VineretskyDaniel Mc GrawAlan DunnBobby DabbsKarie Mars
    • C02F3/04
    • B01D24/22B01D24/46
    • In a vessel containing a filter bed and containing a mixed liquor containing suspended solids, a system disturbs/dislodges a sludge mat that settles on the filter bed. Thus, the system controls the sludge mat on the filter bed that otherwise may blind the filter bed and significantly reduce or stop process liquid flow into and through the filter bed. The system helps maintain effective vessel effluent flowrates with reduced requirements for filter bed backwashing or other filter bed maintenance. The system includes a sludge mat dislodging member that moves along the filter bed surface, preferably on but substantially not inside the filter bed, to disrupt/dislodge the sludge mat and/or prevent formation of the sludge mat. Preferably, the dislodging member is carried inside the vessel on a moving arm or arms that rotate in a plane parallel to the filter bed surface. The preferred sludge mat dislodging member(s) hang from the rotating arm(s) to slide along the top of the filter bed through the sludge mat. The sludge mat control methods and apparatus preferably are used during normal operation of the reactor/vessel, without requiring shutdown or interruption of the process. The methods and apparatus may be effective in sludge blanket microbial remediation reactors that require high flowrates of liquid effluent due to low residence times in a given vessel.
    • 在含有过滤床并含有含有悬浮固体的混合液的容器中,系统扰乱/移除沉降在过滤床上的污泥垫。 因此,系统控制过滤床上的污泥垫,否则可能使过滤床蒙蔽,并显着地减少或停止过滤液体流入和通过过滤床。 该系统有助于维持有效的容器流出物流量,同时减少过滤床反冲洗或其他过滤床维护的要求。 该系统包括沿过滤床表面移动,优选地但基本上不在过滤床内部的污泥垫移动构件,以破坏/移除污泥垫和/或防止污泥垫的形成。 优选地,移动构件在容器内承载在与滤床平面平行的平面内旋转的移动臂或臂上。 优选的污泥垫移动构件从旋转臂悬挂以沿着过滤床的顶部通过污泥垫滑动。 污泥板控制方法和装置优选在反应器/容器的正常操作期间使用,而不需要关闭或中断该方法。 由于在给定的容器中的停留时间低,所以这些方法和装置可能对需要高流出液体流出物的污泥层微生物修复反应器是有效的。