F - Mech Eng,Light,Heat,Weapons – 23 – G
Patent
F - Mech Eng,Light,Heat,Weapons
23
G
110/3, 71/38
F23G 7/00 (2006.01) B01D 47/00 (2006.01) C02F 1/04 (2006.01) C02F 11/06 (2006.01)
Patent
CA 1053513
TREATMENT OF WASTE LIQUID AND APPARATUS THEREFOR AND A FERTILIZER COMPOSITION OBTAINED THEREBY Abstract of the Disclosure A process for treating a waste liquid which is obtained from a fermentation process, e.g., an alcohol fermentation, and contains organic and inorganic substances which are useful as fertilizer, is provided which includes combusting a concentrate of the waste liquid and bringing the combustion products containing the ashes which are formed from the inorganic substances and the hot combustion gases into direct contact with a fresh portion of the waste liquid. Thereby the fresh portion of liquid is concentrated by evaporation and a slurry of the ashes in the concentrated waste liquid is formed. The slurry is separated into a solid sediment containing the minerals and a part of the organic components of the liquid and a concentrated mother liquid, at least a portion of which is combusted as the concentrate. By drying the sediment with agitation, a granulate which can be used as a fertilizer can be produced. The polluting effects of discharge of the waste liquid are eliminated and a useful product formed. Apparatus for effecting the process also is disclosed. - 1 -
267194
Akune Mikio
Kouchi Susumu
Yamauchi Tadashi
LandOfFree
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