Methods of and apparatus for removing odors from process airstre

Details Methods of and apparatus for removing odors from process airstre Methods of and apparatus for removing odors from process airstre

1990-12-07

1992-11-03

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

55223, 55229, 261 17, 261 21, 261 361, 261117, 261118, 422172, 423210, 423220, 423237, 423238, 4232451, 4232452, 42324301, B01D 5000

Patent

active

051607077

ABSTRACT:
After aerating sewage sludge in a composting process, a stream of process air is treated to remove odors therefrom by injecting into the airstream an atomized mixture of dilute sulfuric acid and dilute surfactant to remove ammonia and odorous organic compounds therefrom. The airstream is then oxidized with bleach to remove sulfides and treated with a hydrogen peroxide solution to remove chlorine introduced by the bleach while maintaining the oxidation reaction. A dilution fan is used to further dilute the scrubbed airstream as the airstream is exhausted to the atmosphere.

REFERENCES:
patent: 2050797 (1936-08-01), Kerschbaum et al.
patent: 3494099 (1970-02-01), Eng et al.
patent: 4223614 (1980-09-01), Barkhaus et al.
patent: 4520761 (1985-06-01), Arnold
patent: 4799941 (1989-01-01), Westermark

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