JPH0782072A - Process for producing fermented material by fermenting food waste and animal excrement - Google Patents

Abstract

PURPOSE:To dispense with the incineration work of an organic mixture and effectively utilize the mixture as a compost by fermenting an organic mixture such as food waste under prescribed condition and completely ripening the fermentation product at a prescribed water content. CONSTITUTION:Food wastes and animal excrements are mixed with wood twigs, leaves and chips and aerobic fermentation microbes while sprinkling water to the mixture to obtain an organic mixture. The mixture is fermented at a water content of about 60% and 60-90 deg.C. The fermentation product is completely ripened, adjusted to a water-content of about 15% and mixed with soil, etc., to obtain a compost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a fermented product by fermenting food waste and animal excrement, and in particular, food waste such as raw garbage and food factory residual materials and animal excrement such as animal excrement. The present invention relates to a method for producing a fermented product by fermenting food waste and animal excrement in which the fermented product is reused.

[0002]

2. Description of the Related Art Food waste such as raw garbage produced from households and food factory residual materials produced from factories are collected by a cleaning station or a designated contractor and incinerated, or part of them is used as landfill materials. ing.

Animal waste such as animal excrement is collected by a cleaning bureau or a designated contractor, as is food waste.
Currently, they are either discarded or partly used for private use.

Further, the branches and leaves of plants such as street trees are generally collected after being pruned every predetermined period, incinerated, made into chips, or buried in the ground for use as compost. Is.

[0005]

By the way, conventional methods for treating food waste, animal excrement, and branches and leaves of plants such as street trees may be incineration, burial, or illegal dumping. Is expensive, economically disadvantageous, treatment of ash after incineration becomes a problem, and there is a possibility that it may cause air pollution. It takes a long time to change the odor, and there are inconveniences such as giving off an offensive odor, and further illegal dumping may lead to destruction of nature, so improvement is desired.

[0006] Further, in order to reuse food waste,
Large equipment costs are required, there are problems in terms of cost, and it is impossible to process all food waste for reuse.

Further, a method of fermenting raw garbage to generate methane gas and utilizing the generated methane gas has been considered, but if sufficient fermentation equipment is not provided, an offensive odor generated during fermentation of raw garbage Is likely to be a factor in air pollution, and improvement is urgently needed.

[0008]

Therefore, in order to eliminate the above-mentioned inconvenience, the present invention mixes a food waste or animal excrement with sprinkling branches and leaves or wood chips and aerobic fermentative bacteria while sprinkling the mixture. Produced, water content is about 60% and temperature is 60
It is characterized in that the mixture is fermented under an environmental condition of ˜90 ° C., and the fermentation is completed at a water content of about 15% to produce a fermented product.

[0009]

According to the invention as described above, when a fermented product is produced, first, food waste or animal excrement is mixed with aerobic fermentative bacteria while sprinkling to produce a mixture, and the water content is about 6%.
The mixture is fermented under an environmental condition of 0% and a temperature of 60 to 90 degrees, and the fermentation is completed at a water content of about 15%.

[0010]

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 3 show an embodiment of the present invention. In FIG. 1, 2 is food waste, raw garbage,
4 is a food factory residual material that is food waste, 6 is animal excrement that is animal excrement, 8 is the branches and leaves of plants such as street trees, and 10 is a fermented product produced by fermentation.

First, as shown in FIG. 2, the manufacturing process of the fermented product 10 will be described.

In the manufacturing process of the fermented product 10, the first is a collecting process A of raw garbage 2, food factory residual material 4, animal manure 6, and branches and leaves 8 of plants such as street trees.

In the collecting step A, as shown in FIG. 1, garbage trucks 2 and food factory residual materials 4 are put in a predetermined position by a collecting vehicle 12.
The animal excrement 6 and the branches and leaves 8 of a plant such as a roadside tree are collected.

After the collecting step A, there is a mixing step B. In this mixing step B, as shown in FIG. 1, raw garbage 2, food factory residual material 4, and animal excrement 6 are mixed with sprinkling 16 of branches and leaves 8 of plants such as street trees and aerobic fermenting bacteria 14. The foliage 8 of the plant is cut into pieces of wood chips using the crusher 18 and mixed after cutting. Then, the power shovel 20 is moved, stirred, or subjected to other predetermined work to generate the mixture 22.

Further, there is a fermentation step C of the mixture 22. In the fermentation step C, as shown in FIG. 1, the mixture 22 is fermented under a predetermined environmental condition, that is, an environmental condition in which the water content is about 60% and the temperature is 60 to 90 degrees to produce the fermented product 10. It is a thing. At this time, watering 24 is performed and sterilization is performed by natural heat generation to accelerate fermentation.

Then, when the fermentation proceeds due to the natural growth of the fermenting bacteria 14 and a predetermined period, for example, 2 months, elapses to a predetermined fully-ripened state, that is, a water content of about 15%, the fermentation step C
Is completed, and the manufacturing process of the fermented product 10 is completed.
By mixing soil with 0, it becomes the culture soil 26 and can be used as a raw material for fertilizer.

A heat utilization device 28 may be provided in order to utilize the heat generated when the mixture 22 is fermented. As shown in FIG. 3, the heat utilization device 28 includes a water supply port 30 for supplying water, and a first pipe part 32 having one end communicating with the water supply port 30 and passing through the mixture 22 during fermentation. And a second pipe portion 34 that communicates with the other end of the first pipe portion 32 and passes through the inside of the mixture 22 that is raised for fermentation, and the first pipe portion 32 absorbs heat during fermentation. , And is released to the mixture 22 in the second pipe portion 34, and is used for promoting the fermentation of the mixture 22.

Further, the other end of the second pipe portion 34 is connected to a pool or district heating equipment (not shown) so as to effectively use the surplus heat.

Next, the operation will be described with reference to FIG.

First, raw garbage 2, food factory residual material 4, animal manure 6 and branches and leaves 8 of plants such as street trees are collected. In other words, garbage truck 2 and food factory residual material 4
The animal manure 6 and the branches and leaves 8 of a plant such as a roadside tree are collected at a predetermined location.

Next, raw garbage 2, food factory residual material 4, and animal excrement 6 are mixed with sprouts 14 of plants such as street trees and fermentative bacteria 14 having aerobic properties while sprinkling water 16.

At this time, the branches and leaves 8 of the plant are cut into pieces of wood chips using a crusher 18, mixed after cutting, moved or stirred by a power shovel 20, or subjected to other predetermined work to form a mixture 22. To generate.

When fermenting the mixture 22,
Under the environmental conditions where the water content is about 60% and the temperature is 60 to 90 degrees, the mixture 22 is fermented while sprinkling water 26, and the bacteria are sterilized by natural heat to accelerate the fermentation and the seeds of plants are sterilized. To die.

When the fermentation proceeds due to the natural growth of the fermenting bacteria 14 and the water content becomes about 15% after about 2 months, the fermentation is completed and the fermented product 10 is completed.
When soil is mixed in the fermented product 10 that has been ripe, pollution-free culture soil 26 can be obtained and can be used as a raw material for fertilizer.

In the heat utilization device 28, the first pipe portion 32 passing through the mixture 22 during fermentation absorbs the heat of the mixture 22 at the time of fermentation, and the mixture is raised in the second pipe portion 34 for fermentation. It releases heat to 22 and promotes the fermentation of mixture 22 which has been raised to ferment.

Further, the other end of the second pipe portion 34 is connected to a pool or district heating equipment (not shown), and surplus after discharging to the mixture 22 heaped up for fermentation in the second pipe portion 34. The heat of is effectively used.

As a result, raw garbage 2 and food factory residual material 4
Food waste such as animal waste and animal excrement 6 such as animal waste, and branches and leaves 8 of plants such as roadside trees can be effectively used, incineration is not required, costs for incineration work can be saved, and air pollution due to incineration can be achieved. There is no problem, it is economically advantageous, illegal dumping can be prevented in advance, and air pollution and natural destruction due to illegal dumping can be prevented, which is practically advantageous.

In the production of the fermented product 10, by utilizing the aerobic fermenting bacteria 14, the cost required for production can be reduced, which is economically advantageous and consumes less energy during production. Moreover, there is little off-flavor during fermentation, which is practically advantageous.

[0030]

As described above in detail, according to the present invention, food waste or animal excrement is mixed with sprouts and wood chips while aerobically fermenting bacteria are sprinkled to form a mixture, and the water content is about By fermenting the mixture under the environmental conditions of 60% and the temperature of 60 to 90 degrees, and fermenting the fermentation to the condition that the water content is about 15%, and producing the fermented product, food waste and animal excrement are produced. Since branches and leaves and wood chips can be effectively used, incineration is not required, the cost of incineration work can be saved, it is economically advantageous, and air pollution and illegal dumping due to incineration can be prevented in advance. It is possible to prevent the destruction of nature due to pollution and illegal dumping, which is practically advantageous. Further, in the production of fermented products, by utilizing fermentative bacteria having aerobic ability, it is possible to reduce the cost required for production, which is economically advantageous, consumes less energy, and has less off-flavor during fermentation. This is advantageous.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing production of a fermented product according to an embodiment of the present invention.

FIG. 2 is a manufacturing process diagram of a fermented product.

FIG. 3 is a schematic configuration diagram of a heat utilization device.

[Explanation of symbols]

 2 Garbage 4 Remaining material of food factory 6 Animal excrement 8 Branches and leaves 10 Fermented material 12 Collection vehicle 14 Fermentation bacteria 16 Sprinkler 18 Crusher 20 Power shovel 22 Mixture 24 Sprinkler 26 Culture soil 28 Heat utilization device 30 Water supply port 32 First pipe Part 34 Second pipe part

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[Procedure amendment]

[Submission date] November 15, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Fig. 2]

[Figure 3]

[Figure 1]

Claims (1)

[Claims] 1. An environment in which food waste or animal excrement is mixed by sprinkling branches and leaves or wood chips and aerobic fermentative bacteria while water is sprinkled to form a mixture having a water content of about 60% and a temperature of 60 to 90 degrees Celsius. A method for producing a fermented product by fermenting a food waste / animal excrement, which comprises fermenting the mixture under the conditions and completely fermenting the fermented product in a state where the water content is about 15% to produce a fermented product.