Patent
Two-stage subcritical-supercritical wet oxidation
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TLDR
In this paper, a two-stage wet oxidation process for COD removal from high strength wastewater is disclosed, where the wastewater stream is treated in a first stage subcritical wet oxidation zone at temperatures between about 250° and 374° C. to remove a substantial portion of the COD.Abstract:
A two-stage wet oxidation process for COD removal from high strength wastewater is disclosed. The wastewater stream is treated in a first stage subcritical wet oxidation zone at temperatures between about 250° and 374° C. to remove a substantial portion of the COD. Subsequently, all or a portion of the first stage oxidized waste stream is treated in a second stage supercritical wet oxidation zone at temperatures of 374° to about 600° C. to remove any remaining COD content. Both stages of wet oxidation treatment are carried out at essentially the same system pressure.read more
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References
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Patent
Process for treating waste water
TL;DR: In this article, the authors provide processes for treating waste water comprising subjecting waste water to liquid phase oxidation without catalyst, liquid phase oxidization with catalyst and anaerobic digestion and/or aerobic treatment.
Patent
Process for oxidation of materials in water at supercritical temperatures and subcritical pressures
TL;DR: In this article, a method of oxidizing materials in the presence of an oxidant and water at supercritical temperatures to obtain useful energy and/or more desirable materials is described.
Patent
Process for treatment of wastewater containing inorganic ammonium salts
TL;DR: In this paper, a process for treating an aqueous wastewater containing ammonium compounds is described, which comprises the steps of preheating a liquid influent and introducing the preheated influent, an oxygen-containing gas an the wastewater into a reaction vessel for undergoing wet oxidation.
Patent
Process for the wet oxidation of organic substances
Reinhard Dr Thiel,Karl-Heinz Dietz,Hans Dr Kerres,Heinz Joerg Dr Rosenbaum,Siegfried Steiner +4 more
TL;DR: In this paper, a process has been developed for the oxidation of organic substances, dissolved or dispersed in an aqueous system, with a gas containing molecular oxygen at elevated temperature and under elevated pressure chiefly to carbon dioxide and water, with subsequent phase separation of the reaction mixture into a gaseous phase substantially containing inert gas, carbon dioxide, steam and organic constituents and a liquid phase substantially including water.
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Wet combustion of waste liquors
TL;DR: In this article, a web combustion of waste liquors is described, in which the waste liquor is reacted with oxygenating gas in a reaction vessel at a temperature between 450* F and 705* F at superatmospheric pressure.