Odor control system for wastewater settling tank with gas veloci

Details Odor control system for wastewater settling tank with gas veloci Odor control system for wastewater settling tank with gas veloci

1991-04-18

1993-01-05

Dawson, Robert A.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

738665, 210 87, 210188, 210218, 210539, 210916, 55270, B01D 2130

Patent

active

051768232

ABSTRACT:
An odor control system for a settling tank containing a pool of wastewater to be clarified in which suspended particles are removed by gravitational settling and the water at the surface of the pool is clarified. Supported within the tank is an elongated effluent trough having a weir at one side thereof which extends upwardly therefrom to permit clarified water from the pool to spill over into the trough. Mounted over the trough along its full length is a hood having a side wall which extends into the pool at a position displaced from the weir the hood being constituted by a series of sections. The hood acts to capture noxious gases emitted into a region above the surface of the water therebelow as the clarified water spills over into the trough. The hood is provided with an inlet and an outlet duct whereby atmospheric air drawn through the inlet duct into the region under the hood entrains the emitted gases to produce a gas-laden air stream that flows at a specified velocity and is discharged from the outlet duct into an external scrubber. Formed in each hood section is a closable port providing access for test probes to determine the velocity of the gas-laden stream in the region and the concentration of the gases therein.

REFERENCES:
patent: 4391704 (1983-07-01), Anderson
patent: 4767536 (1988-08-01), Roley
patent: 4883602 (1989-11-01), Anderson
Publication--"Elimination of Odor at Six Major Wastewater Treatment Plants"--G. David Waltrip & Edwin G. Snyder, Oct. 1985 issue of Journal WPCF--, vol. 57, No. 10, pp. 1027-1032.

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