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31. 发明申请

WO00029335A1 WATER TREATMENT METHOD BY BALLASTED FLOC INCLUDING A RECYCLING OF GRANULAR MATERIAL 审中-公开
标题翻译：包裹浮选水泥处理方法，包括颗粒材料回收
公开(公告)号：WO00029335A1
公开(公告)日：2000-05-25
申请号：PCT/FR1999/002836
申请日：1999-11-18
IPC分类号： B01D21/01 , B03B5/34 , B04C5/18 , C02F1/52 , B01D21/26
CPC分类号： C02F1/5281 , B01D21/01 , B01D21/26 , B01D21/267 , B03B5/34 , B04C5/18
摘要： The invention concerns a flocculation-decantation method by ballasted flocs using a granular material and a step which consists in treating the sludge derived from flocculation-decantation in a circular grit trap wherein the auxiliary liquids tangentially injected into the sludge substantially in the same direction as the latter. The invention also concerns a circular grit trap with a cylindrical part of diameter D tangentially supplied with the suspension to be treated and a conical part and provided with a cylindrical chamber injecting wash-water provided at the conical part outlet and having a diameter D' ranging between 0.35 D and 0.65 D, said cylindrical chamber having at least a tangential supply of auxiliary liquid along the same feeding direction as said tangential supply of the suspension to be treated.
摘要翻译：本发明涉及使用颗粒材料的压实絮凝物的絮凝倾析方法和一个步骤，该方法包括在圆形砂砾阱中处理来自絮凝倾析的污泥，其中辅助液体基本上沿着与后者。本发明还涉及一种圆形砂砾阱，其具有切向供应待处理的悬浮液的直径为D的圆柱形部分和圆锥形部分，并且设置有圆筒形室，其注射设置在锥形部分出口处并具有直径D'范围的洗涤水在0.35D和0.65D之间，所述圆柱形腔室具有至少与所述待处理悬液的切向供应相同的进料方向的辅助液体切向供应。

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