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AssigneeEnvirocorp Services & Technology, Inc.
InventorsJoseph P. Sheldon, Walter H. Stanton, Edward Malachosky, Fred Applegath
Estimating the term…
The present invention, in certain embodiments, teaches a process for treating ammonia or ammonium-sulfate-containing waste effluent from an acrylonitrile, caprolactam or acetonitrile manufacturing facility. In one such process the effluent is fed to a deep well oxidizer, e.g. a water oxidizer vertical tube reactor (super critical or subcritical), to degrade organic contaminants. Certain embodiments of the deep well oxidizer have, according to this invention, an oxygen inlet tube movable by a coil tubing system. The output stream from the vertical tube reactor is, preferably, filtered, and then it is fed to an electrodialysis unit. In one aspect the electrodialysis unit produces an output stream at a pH of about 5 with a concentration of ammonium sulfate at least, preferably, of about 15% by weight, and most preferably between about 20% and about 26% by weight. This output stream may be neutralized and then further treated to remove ammonia and/or ammonium sulfate solids, e.g. by a downstream ammonia stripper, evaporator, and/or crystallizer system or combination thereof.
A process for treating a first aqueous effluent waste stream, the first effluent waste stream containing dissolved ammonium salts at a first concentration and organic contaminants, the process comprising
A process for treating a first effluent waste stream from an acrylonitrile or acetonitrile manufacturing process, the first effluent waste stream being an aqueous stream and containing dissolved ammonium salts at a first concentration and organic contaminants, the first effluent stream is by weight about 10% ammonium sulfate, about 0.5 to 5% contaminants, and the remainder water, the second effluent waste stream is by weight about 4% ammonium sulfate and about 96% water, the process comprising
Dependencies are inferred from the claim text.