Process for combining solids thickening and dewatering in...

Details Process for combining solids thickening and dewatering in... Process for combining solids thickening and dewatering in...

2005-07-08

2009-02-24

Hruskoci, Peter A (Department: 1797)

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

C210S694000, C210S715000, C210S725000, C210S747300, C210S793000

Reexamination Certificate

active

07494592

ABSTRACT:
Process involving repeatedly applying some of the liquid composition to the granular filter media to remove water from the liquid composition by passing through the granular filter media with the particulate solids collecting on top surface of granular filter media. Water is first allowed to fill from below to just above the top layer of the filter media. A non-porous liner is located on the inner, bottom surface of the container. A drain pipe, having small openings, is located on top of the liner in the valley. A porous layer of large filter media, with the drain pipe therein, is located in the bottom of the container. A grid having open passageways, with fine filter media therein, is located on top thereof. A layer of fine filtrate sand is located on top of the grid.

REFERENCES:
patent: 1151313 (1915-08-01), Wheeler
patent: 2302450 (1942-11-01), Laughlin
patent: 3615019 (1971-10-01), Early
patent: 3618766 (1971-11-01), Morey
patent: 3847808 (1974-11-01), Spohr
patent: 4624604 (1986-11-01), Wagner et al.
patent: 4632764 (1986-12-01), Riise
patent: 6051137 (2000-04-01), Deskins
patent: 6193889 (2001-02-01), Teran et al.
patent: 7160465 (2007-01-01), Kirts et al.

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