Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
1999-09-13
2001-05-01
Simmons, David A. (Department: 1724)
Liquid purification or separation
Processes
Treatment by living organism
C435S262500, C071S008000, C071S021000, C071S023000, C071S014000
Reexamination Certificate
active
06224771
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method of recycling organic waste, and more particularly to a method of recycling organic wastes in which a pro-ferment, that is produced by mixing a medium with an organic waste, are mixed with other organic wastes such as feces and urine of domestic animals, pruned branches, bush, and lawn, and which accelerates the fermentation of the latter organic waste to obtain compost.
2. Description of the Related Art
Most of the organic waste such as garbage from households, restaurants and the like is burnt or disposed of in a conventional way at reclaimed lands or the like.
However, with conventional methods, problems such as dioxin pollution from garbage furnace and the leakage of harmful materials or matter contained in organic wastes at reclaimed lands remain unsolved. In addition, the capacity of final places for disposal is limited.
In consideration of the above-mentioned problems, in recent years, organic wastes have been ground and dried to be utilized as compost, but the recycling ratio of the wastes is still low.
By the way, Japanese stockbreeding output has been decreasing due to the shortage of successors, the increase in imported meat, environmental problems such as an offensive odor emitted from stockbreeders, and so on. Therefore, it is generally said that a large-scale management for the future is indispensable to realizing favorable managing conditions.
One of the problems for the large-scale management is the disposal of the feces and urine of domestic animals. Generally, the feces and urine of dairy cows are high in a water content, and low in a nitrogen content, which makes the fermentation of the feces and urine difficult, and it takes about one year to finish the fermentation when the feces and urine are merely left as they are. Even machinery is used, it is necessary to accelerate the fermentation for approximately one and half months after decreasing water content of the feces and urine before using the machinery for two to three months in summer or for more than one month in winter. Therefore, the feces and urine of dairy cows are mostly disposed of at farms as raw, causing environmental problems such as an offensive odor and pollution of rivers throughout the country.
To solve the above-mentioned problems, Japanese government and local municipalities have subsidized stockbreeders to facilitate the construction of compost manufacturing facilities, and there have been some cases in which local municipalities have constructed compost manufacturing facilities to handle the feces and urine of domestic animals generated in their territories by themselves.
Furthermore, organic wastes such as pruned branches, bush, and lawn, which are generated mainly at parks, river terraces, roads, households, and golf courses also have been burnt in a conventional way. However, the capacity of burning facilities is also limited, or maybe the disposal of such organic wastes are very cumbersome or difficult, which is what local municipalities are anxious about.
In addition to the above countermeasures, they have tried to ferment the organic wastes and utilized them as compost. However, whether the fermentation is preferably carried out or not often depends on the climate, kinds and properties of pruned branches, bush, and lawn. Especially when the pruned branches have many trunks and stumps, the nitrogen content of the pruned branches becomes low, which makes the fermentation of the branches difficult. Therefore, no effective disposing measures have been found so far.
SUMMARY OF THE INVENTION
The objective of the present invention is to provide a method of recycling organic wastes in which organic wastes such as garbage from households, restaurants are recycled and utilized as a pro-ferment for other organic wastes such as feces and urine of domestic animals, pruned branches, bush, and lawn, that are generated at parks, river terraces, roads, and the like to utilize them as compost.
To accomplish the above objective, in a method of recycling organic wastes according to the present invention, a pro-ferment, which is obtained by mixing a medium with organic wastes, are mixed with other organic wastes to accelerate the fermentation of the latter organic waste and to produce compost.
With the above method according to the present invention, not only is it unnecessary to neither burn nor dispose of both the former and latter organic wastes, but also compost for agricultural products can be obtained from the organic wastes.
In the above method according to the present invention, the medium may be composed of dried coffee refuse, one of wheat bran and coconut fiber, which are easily obtainable, and ferment bacillus.
Furthermore, in the above method, the latter organic wastes can be the feces and urine of domestic animals such as dairy cows. In case of the feces and urine of dairy cows, 0.4 to 0.6 ton of the pro-ferment is preferably mixed with one ton of the feces and urine to obtain optimum water content of the feces and urine for the fermentation thereof. And, in case of the feces of dairy cows, 0.3 to 0.5 ton of the pro-ferment is preferably mixed with one ton of the feces to obtain optimum water content thereof.
With this method, it is unnecessary to burn and dispose of organic wastes, and nor is there also need to feed the feces and urine of domestic animals as they are. Furthermore, compost is obtained from the feces and urine, which can be utilized for agricultural productions.
Furthermore, in the above method, the latter organic waste can be one of the pruned branches, bush, lawn, and mixture of these materials, which allows the former and the latter organic waste such as pruned branches not to be burnt and disposed of. In addition, compost is obtained from the pruned branches and so on.
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Armstrong Westerman Hattori McLeland & Naughton LLP
Food Cycle Systems Co., Ltd.
Prince Fred
Simmons David A.
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