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AssigneeEcolab Inc.
InventorsRobert D. P. Hei, Scott P. Bennett, Jay H. McLaren, Guang-jong Jason Wei, Keith D. Lokkesmoe
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Disclosed is a process for the pretreatment of a plant fluid effluent containing odor compounds including an alkyl mercaptan or an alkyl thiol, an amine compound, ammonia, hydrogen sulfide and mixtures thereof by contacting the plant effluent with an atomized aqueous solution comprising a peroxy acid compound. When contacted with the peroxy acid, odor compounds in the effluent are oxidized and converted from the gaseous phase into a chemically modified highly aqueous soluble phase in the aqueous treatment. The use of such a process produces a significant improvement in odor quality index as measured by a conventional process using an expert panel when compared to conventional treatment methods.
A pre-treatment or post-treatment process for removing an odor from an atmospheric effluent, the process comprising contacting an atmospheric effluent comprising an odor component with a finely divided aqueous peroxy acid treatment composition, forming an oxidized odor component and dissolving the oxidized odor component or an odor component in the aqueous treatment composition to form a treated effluent and returning the treated effluent to another treatment step or to the atmosphere;
A pre-treatment or post-treatment process for removing an odor from an atmopsheric effluent, the process comprising contacting an atmopsheric effluent comprising an odor component with from about 0.1 to 3 gallons per minute of a finely divided aqueous peroxy acid treatment composition comprising at least about 100 ppm of peroxyacetic acid, at least about 100 ppm of hydrogen peroxide and at least about 20 ppm of acetic acid, forming an oxidized odor component and dissolving the oxidized odor component or an odor component in the aqueous treatment composition;
Dependencies are inferred from the claim text.