Method and apparatus for treating industrial gas streams and biological fouling

摘要

Methods and apparatuses are described for contacting an oxidizing solution such as an aqueous hydrogen peroxide composition of hydrogen peroxide, at least one additive that catalyzes the decomposition of the hydrogen peroxide into hydroxyl radicals, and a biocide with an atmospheric effluent containing odorous and/or noxious components. These components are absorbed by the aqueous hydrogen peroxide composition to produce an atmospheric effluent having reduced amounts of the odorous and/or noxious components. Various methods are described for adding the hydrogen peroxide, the decomposition additive, and the biocide.

主权项

1. A method for removing an odorous or noxious component from a gas stream, comprising:
adding hydrogen peroxide, a hydrogen peroxide decomposition additive, and a biocide to a liquid stream, wherein said biocide is added in an amount sufficient to eliminate biological fouling on at least one surface in a gas/liquid contactor, and wherein said liquid stream has a pH of less than 7; contacting a gas stream comprising at least one odorous or noxious component with said liquid stream in the gas/liquid contactor having a pressure drop across the gas/liquid contactor; absorbing at least a portion of said odorous or noxious component in said gas stream into said liquid stream; and eliminating biological fouling on at least one surface in the gas/liquid contactor during said contacting and said absorbing, thereby killing substantially all microorganisms on said at least one surface and thereby reducing the pressure drop across the gas/liquid contactor.