Sewage treatment system

Details Sewage treatment system Sewage treatment system

1991-11-18

1993-09-28

Lithgow, Thomas M.

Liquid purification or separation

Recirculation

Serially connected distinct treating or storage units

2101953, 210199, 210205, 210206, 210219, 210400, 210713, 210738, 366136, 366159, 366276, 209210, C02F 152, C02F 1112, B01D 3372

Patent

active

052484165

ABSTRACT:
A sewage treatment system which presents a main flow line and a recirculating line, the former for flock which has appreciated in size due to the addition of a polymer and passage through an area of agitation/turbulence and the latter for the return of small sized flock to the agitator/turbulence area for size increase. The passageways of the system include movable flaps, serving recirculation purposes, and a ledge or flutter for current creation and flock build-up. Raw liquid sewage enters the system, where the outlet leads to a belt press and/or a dry bed to cake the resulting sludge.

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patent: 4595499 (1986-06-01), Kormanik
patent: 4675116 (1987-06-01), Hoyland
patent: 4844620 (1989-07-01), Lissant
patent: 5124035 (1992-06-01), Dunne
patent: 5133872 (1992-07-01), Baldwin

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