C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 11/08 (2006.01) B01J 3/00 (2006.01) B01J 8/20 (2006.01) C01B 25/00 (2006.01) C01B 25/01 (2006.01) C02F 1/52 (2006.01)
Patent
CA 2451300
A process for treatment of waste containing organic material, phosphorous and water in suitable amounts to be a pumpable sludge and in order to be oxidizable through supercritical water oxidation, comprises the steps of: putting the sludge into conditions being supercritical for water; adding oxidant, particularly, oxygen to the sludge, wherein the organic material contained in the waste is substantially completely oxidized by means of supercritical water oxidation; separating the phosphorous from water and from carbon dioxide formed during the oxidation; and recovering the phosphorous by means of dissolving the phosphorous in an alkali.
L'invention se rapporte à un procédé de traitement des déchets contenant de la matière organique, du phosphore et de l'eau, en des quantités appropriées pour former des boues pompables et pour être oxydables par oxydation supercritique de l'eau. Ledit procédé comprend les étapes consistant à : mettre les boues dans des conditions supercritiques pour l'eau ; ajouter un oxydant, en particulier de l'oxygène, aux boues, dans lesquelles la matière organique contenue dans les boues oxyde est sensiblement complètement oxydée par oxydation supercritique de l'eau; séparer le phosphore de l'eau et du dioxyde de carbone formé pendant l'oxydation ; et récupérer le phosphore par dissolution de ce dernier dans un alcali.
Jaefverstroem Stefan
Stendahl Kjell
Stenmark Lars
Chematur Engineering Ab
Feralco Ab
Shapiro Cohen
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