Gas-extraction arrangement for wastewater settling tank

Details Gas-extraction arrangement for wastewater settling tank Gas-extraction arrangement for wastewater settling tank

1981-07-28

1983-07-05

Hruskoci, Peter A.

Liquid purification or separation

With gas separator

55189, 55196, 55387, 210218, 210539, B01D 1900, C02F 120

Patent

active

043917046

ABSTRACT:
A gas-extraction arrangement for a settling tank included in a wastewater treatment system, the tank having an outlet zone defined by an effluent trough at least one side of which has a weir to permit clarified water from the tank to spill therein. The trough is covered by a hood which acts to confine the atmosphere thereabove to the hood region, at least one side of the hood protruding into the tank water at a point spaced from the weir to create a scum baffle preventing grease and other floating matter from being discharged into the trough. The hood is coupled to a suction pump which acts to draw noxious gases emitted as the water spills over the weir into a gas-control system or other means for deactivating the gases.

REFERENCES:
patent: 1690692 (1928-11-01), Imhoff et al.
patent: 2360812 (1944-10-01), Kelly et al.
patent: 2422394 (1947-06-01), Carter
patent: 3017951 (1962-01-01), Wiley
patent: 4039458 (1977-08-01), Maisonneuve et al.
patent: 4162147 (1979-07-01), Haverkamp
patent: 4175041 (1979-11-01), Drnevich et al.
patent: 4256837 (1981-03-01), Fluri et al.

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