Apparatus and method for processing of animal manure wastewater

Details Apparatus and method for processing of animal manure wastewater Apparatus and method for processing of animal manure wastewater

2007-09-18

2007-09-18

Lithgow, Thomas M. (Department: 1724)

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

C210S780000, C210S805000, C210S806000, C210S195100, C210S205000, C210S221200, C210S297000, C210S346000, C210S391000, C210S314000

Reexamination Certificate

active

11318146

ABSTRACT:
According to the present invention, there is provided a wastewater processing apparatus and method comprising a rotating filter thickener (20) receiving and filtering a wastewater mixture and producing a first filtrate output and a first sludge output, a screw press thickener (24) receiving the first sludge output and forming a final sludge output and a second filtrate output, a dissolved air floatator (46) receiving the first filtrate output from the rotating filter thickener (20) and producing a first solid output and a third filtrate output. The wastewater processing apparatus and method further comprising a first conductor (10, 12, 29) for mixing incoming raw manure wastewater and the second filtrate output from the screw press thickener (24) to produce the wastewater mixture for input to the rotating filter thickener (20), and a second conductor (34) for branching off a part of the first filtrate output to a spray cleaner (38) for spraying the part of the first filtrate output onto the filtration disks (70) for their cleaning.

REFERENCES:
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patent: 3982499 (1976-09-01), Frankl
patent: 4282256 (1981-08-01), Evich et al.
patent: 4855065 (1989-08-01), Keeter et al.
patent: 5514282 (1996-05-01), Hibbard et al.
patent: 507416 (1992-10-01), None
patent: 990622 (2000-04-01), None
patent: 2484272 (1981-12-01), None

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