公开(公告)号：DE2706078A1

公开(公告)日：1978-08-17

申请号：DE2706078

申请日：1977-02-12

Applicant: BASF AG

Inventor： EXNER KLAUS DIPL ING ,  ZEHNER PETER DIPL ING DR

IPC: C02F3/12 ,  C02C1/10

Abstract: A device for increasing the speed of flow, is used in the circulating pit of an effluent clarification plant, in which a partition divides the pit to promote flow around it and the liquid is gasified or aerated by agitators. Teh deflection zone immediately adjacent to the end of the partition is shielded from the field of nfluence of hte agitator by a semi-rotationally symmetrical hollow object. Pref. where surface agitators are used, the hollow object is conical. In an activated sludge tank, the amt. of agitation required for biologicla purposes is frequently less than the amt. required to promote sufficient speed of circulation to prevent settling of the sludge. The reason for this is the recirculating effect in the immediate vicinity of each agitator. By protecting the ends of the partition walls, this recirculating effect is suppressed and an improved circulation throughout the tank is achieved for a given degree of power supplied to the agitators.