公开(公告)号：US3619421A

公开(公告)日：1971-11-09

申请号：US3619421D

申请日：1969-01-31

Applicant: FMC CORP

Inventor： HOBBS MILLICE FLOYD ,  PRETTYMAN RAYBURN W ,  BLAKE JOHN H ,  FISHER ROBERT A

IPC: C02F3/12 ,  C02F3/20 ,  C02C1/12

CPC classification number: C02F3/12 ,  C02F3/20 ,  Y02W10/15

Abstract: The process of this invention deals with the operation of tanks in which sewage is aerated to accomplish homogeneous mixing and fast B.O.D. removal. In the illustrative embodiment, air injection is proportioned so that air dispersers positioned adjacent the effluent side of the aeration tank receive at least 51% of the total air input.