Organic waste treatment apparatus and method for recycling as a liquid fertilizer

Abstract

An apparatus for treating organic wastes material and a method for recycling as a liquid fertilizer is disclosed, in which the parasites and pathogens are all annihilated, and the treatment can be carried out at a relatively low cost. The aerobic thermophilic digestion bacteria are added into a closed treatment tank, and the tank accommodates an organic wastes slurry which includes animal manure, kitchen waste, sewage and the like. Then the treatment tank is aerated for promoting the proliferation of the aerobic thermophilic digestion bacteria. Thus, the organic wastes slurry is treated with a thermophilic fermentation. Then photo-tropic bacteria are added to convert the organic waste slurry into a liquid fertilizer. The slurry type organic waste are decomposed by utilizing the aerobic thermophilic digestion bacteria which stably flourishes at about 60 DEG C. Then the decomposing is continued by utilizing the photo-tropic bacteria, thereby finally obtaining the product in the form of a liquid fertilizer. The decomposing treatment can be continued for a long time at a high temperature, and the fermentation can be finished in a relatively short period of time without generating any foul odors. Further, parasites and pathogens can all be annihilated.

Description

field of invention [0001] The present invention relates to a device for treating organic waste and a method for recycling it into liquid fertilizer, wherein the organic waste slurry, such as animal manure, kitchen waste, sewage, etc., is fermented. Background of the invention [0002] Japanese Patent Publication No. Heisei 8-11239 discloses a method for treating organic waste slurries such as animal manure, kitchen waste, sewage and the like. [0003] In this invention, organic waste animal manure is contained in a treatment tank. Then add phototropic bacteria into the tank, and leave the treatment tank exposed to the atmosphere. Foam is then formed on the surface of the treatment tank, to which a decomposition-resistant organic material such as sawdust is added. [0004] The foam is removed by means of a defoamer, and the organic waste slurry containing decomposition-resistant organic materials is also removed from the treatment tank. Organic materials other than decompo...

AI Technical Summary

Problems solved by technology

Although the generated odor can be absorbed by deodorizers such as zeolite, it is practically impossible to completely remove the malodor and will increase the cost

[0008] Furthermore, in the mentioned process which belongs to mesophilic fermentation, parasites and pathogens such as Criptostridium cannot be eliminated

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