Method and apparatus using hydrogen peroxide and microwave...

Details Method and apparatus using hydrogen peroxide and microwave... Method and apparatus using hydrogen peroxide and microwave...

C - Chemistry, Metallurgy

02

F

C02F 1/72 (2006.01) B01D 9/02 (2006.01) B01J 19/12 (2006.01) C02F 1/26 (2006.01) C02F 1/48 (2006.01) C02F 1/58 (2006.01) C02F 1/66 (2006.01) C02F 1/76 (2006.01) C02F 1/78 (2006.01)

Patent

CA 2660181

A method and apparatus for treating slurries of organic solids is disclosed. A slurry of organic solids is admixed with hydrogen peroxide, followed by exposure to microwave irradiation resulting in the heating of the mixture and enhanced hydrolysis of the organic solids. The treated slurry of organic solids can then be further treated in a variety of downstream processes, including solid separation, digestion and fermentation. The supernatant portion of the treated slurry of organic solids can be a source from which to recover compounds such as nutrients (for example nitrogen, phosphate, potassium, magnesium, calcium) or industrial organic compounds (such as acetic acid, propionic acid, butyric acid), or as a source of readily biodegradable organic compounds for supplementing a biological wastewater treatment process, digester or fermenter.

L'invention concerne un procédé et un appareil pour le traitement des boues de solides organiques. Une boue de solides organiques est mélangée avec du peroxyde d'hydrogène, puis exposée à une irradiation micro-onde entraînant un chauffage du mélange et une hydrolyse améliorée des solides organiques. La boue de solides organiques traitée peut ensuite être encore traitée dans une variété de procédés en aval, incluant la séparation des solides, la digestion et la fermentation. La partie surnageante de la boue de solides organiques traitée peut être une source à partir de laquelle on récupère des composants tels que des nutriments (par exemple azote, phosphate, potassium, magnésium, calcium) ou des composés organiques industriels (tel qu'acide acétique, acide propionique, acide butyrique), ou une source de composés organiques facilement biodégradables à l'appui d'un procédé biologique de traitement des eaux usées, un digesteur ou un fermenteur.

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