Michael A Schober

US Patent:

20110017674, Jan 27, 2011

Filed:

Jun 9, 2010

Appl. No.:

12/796893

Inventors:

Michael Anthony Schober - Lancaster PA, US

International Classification:

C02F 1/48

US Classification:

210695

Abstract:

In some domestic and industrial sewage treatment strategies, a powder of magnetized material is added to an aeration chamber, and aeration is conducted. The mixture is then sent to a sedimentation chamber, and solid-liquid separation is conducted. A portion of the precipitated sludge is returned to the aeration chamber as return sludge and reused. Sedimented sludge is highly concentrated, due to the density of the magnetized material. Traditionally, the settled sludge is removed from the sedimentation tank by slowly scraping the biomass towards a central hopper. The traditional sludge scraping mechanism is large, bulky and difficult to maintain. Magnets or electromagnets will be used to move the biomass to a predetermined destination for removal, thus eliminating the need for the bulky scraper mechanism.