Chemistry: fertilizers – Processes and products – Bacterial
Patent
1994-06-30
1996-07-09
Lander, Ferris
Chemistry: fertilizers
Processes and products
Bacterial
C05F 904
Patent
active
055340423
ABSTRACT:
This invention relates to a method and apparatus for forming a compost product from organic matter having high water content: the method involving (1) holding organic matter with a large amount of water in a treatment tank for one to three hours while providing a supply of air, heating to not more than 60.degree. C. and agitating and grinding the organic matter so that the matter is reduced to a rice porridge state and aerobic fermentation occurs, extracting generated gas and water vapor to the outside of the tank, thereby dehydrating and drying the organic matter to form a fermentation and decomposition product having a water content of not more than 65%, (2) holding the fermentation and decomposition product for one to six hours at a temperature between 60.degree. C. and 100.degree. C. to thermally decompose the fermentation and decomposition product, extracting generated gas and water vapor to the outside of the tank, thereby dehydrating and drying the fermentation and decomposition product to form a thermal decomposition product having a water content of not more than 45%, and (3) drying the thermal decomposition product for one to six hours at a temperature between 100.degree. C. and 135.degree. C. to sterilize the thermal decomposition product, extracting generated gas and water vapor to the outside of the tank, thereby dehydrating and drying the thermal decomposition product to form the compost product having a water content of not more than 30%; and an apparatus capable of accomplishing the above method.
REFERENCES:
patent: 3246954 (1966-04-01), Redman
patent: 4374804 (1983-02-01), Easter, II
patent: 5354349 (1994-10-01), Inoue
Kabushiki Kaisha Environmental Engineering Laboratory
Lander Ferris
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