公开(公告)号：CH599053A5

公开(公告)日：1978-05-12

申请号：CH92175

申请日：1975-01-27

Applicant: BASF AG

Inventor： HESS KLAUS DR ,  STICKEL RICHARD DIPL ING ,  NAGEL OTTO DR ,  SINN RICHARD DIPL ING DR ,  DAUCHER HANS DIPL ING DR

IPC: C02F3/22 ,  B01F3/04 ,  B01F3/08 ,  B01F5/00 ,  B01F5/02 ,  C02F3/12 ,  C02F3/26 ,  F04F5/26 ,  C02C1/12

Abstract: Method of biologically treating waste water with gasifying nozzles producing a screw-type flow in the activated sludge system. The method provides a maximum partial pressure gradient for the transfer of oxygen to the mixture of waste water and activated sludge.