JPH06304542A - Treating device for solid organic waste - Google Patents

Abstract

PURPOSE:To provide the treating device for solid org. waste of a high speed and high decomposition rate which does not splash malodors and a large amt. of steam to the circumference, does not require addition of sawdust, chaff, etc., as a moisture control material and permits permanent charging of garbage. CONSTITUTION:This treating device is provided with box-shaped treating tanks 1 in two stages, upper and lower, and is provided with an air intake pipe 4 for taking in the air on the outer side of these tanks and an air return pipe 5 for returning the air into the treating tanks. The device is also provided with a heat exchanger 6 for connected thereto and a blasting means 7 for sucking the outdoor air into this heat exchanger and blasting the air so that the inside of the treating tanks is maintained at, for example, 50 to 80 deg.C necessary for fermentation. A circulating fan 14 for circulating the air in the treating tanks 1 to the heat exchanger 6 is disposed in mid-way of the air return pipe 5. Then, the moisture considered to be included at about 80% in crude refuse is efficiently and continuously removed and the smells generated at the time of fermentation are deodorized before discharge. In addition, aerobic fermentation is maintained in the treating tanks.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating solid organic waste, and in particular to aerobically fermenting solid organic waste such as kitchen refuse (garbage), municipal solid waste, food production waste, and biomass. The present invention relates to an apparatus for treating solid organic waste, which is suitable for household use, business use, public use, and industrial scale.

[0002]

2. Description of the Related Art In recent years, the technology for aerobic fermentation treatment of solid organic waste, that is, composting (composting) has been
Not only is it a pollution-free treatment method, but it has also begun to be reviewed as a technology for recycling and naturalizing waste. Especially for kitchen garbage, so-called food waste, as the livestock industry that depends on food leftovers declines,
There has been a demand for the development of a processing device which can solve odor pollution and can perform fermentation at a high speed and with a high decomposition rate.

[0003] Traditionally, the composting of solid wastes such as agricultural wastes and sewage sludge has mostly been carried out by a method in which the solid wastes are kept open for a long time and fermented naturally without active management. . In recent years, in order to accelerate the fermentation, the number of developments in which the stirring or the oxygen supply is partially controlled using a fermentation device is increasing.

For example, JP-A-55-121992, JP-A-57-160986, and JP-A-57-1.
70183, JP-A-60-131888,
JP-A-1-145388 and the like are known.

[0005]

In the conventional treatment apparatus, when a raw material having a high water content such as kitchen waste is processed at high speed by high-temperature fermentation, a secondary raw material such as sawdust or rice husk is used as a moisture adjusting material in addition to the raw material. Is essential. The addition of these auxiliary raw materials is not only premised on stable procurement, but there is a problem that the raw material processing efficiency is reduced by the amount of the additive and the amount of produced compost is increased.

Further, the conventional processing apparatus is so-called batch processing, and once garbage is thrown in, the next garbage cannot be thrown in until a predetermined processing time elapses, which is extremely useful as a garbage disposal apparatus for continuously generated garbage. It was inconvenient.

Further, the conventional processing device does not pay attention to the environmental pollution of the surroundings, and disperses a bad odor and a large amount of water vapor into the surroundings.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and it is necessary to add sawdust, rice husks, etc. as a water content adjusting agent without scattering malodor or a large amount of water vapor to the surroundings. The object is to provide a high-speed, high-decomposition rate solid organic waste treatment device capable of inputting garbage at any time.

[0009]

Means for Solving the Problems The above-mentioned object is to provide a crushing section having at least a solid organic waste charging port and a crushed object to be treated, in the presence of aerobic bacteria, to a sufficient degree of fermentation. A processing tank having a processing section held at the processing temperature of, and returning a gas containing steam from the crushing section side of the processing tank to the processing section side of the processing tank through a heat exchanger, A gas circulating means for circulating the inside of the tank and the inside of the heat exchanger, and a gas circulating means arranged on the high temperature side of the heat exchanger to take in air corresponding to the amount consumed in the fermentation treatment by aerobic bacteria in the treatment tank from the outside. A deodorizing connection pipe is branched and connected to the air intake port provided and a path for returning the gas heat-exchanged from the low temperature side of the heat exchanger to the processing tank side, and the air intake port is connected via the deodorizing tank. Deodorize the gas equivalent to the amount of air taken in and release it outside And deodorizing processing means for care,
This is achieved by a treatment apparatus for solid organic waste, which comprises a stocker that collects the treated material treated in the treatment tank.

Further, preferably, a drain (drainage pipe) for discharging water generated by condensation of water vapor by heat exchange to the outside is provided on the path for returning the heat-exchanged gas to the processing tank. In addition, the crushing section in the processing tank is provided with a comb-shaped fixed arm at the bottom of the tank, and the stirring shaft is provided with each of the rotating shafts that penetrate the processing section from the crushing section. The agitating arm located in the crushing section is configured to slip through between the fixed arms during rotation so as to cause a function of crushing solid organic waste.

Further, a circulation fan for circulating the gas in the processing tank is provided on the path for returning the heat-exchanged gas to the processing tank, and the heat exchanger is sucked in and blows outside air. It is to arrange means.

The above treatment tank may be constructed as a single tank, but it is desirable to divide and arrange it in a plurality of multi-stage tanks in order to miniaturize the entire apparatus. When dividing into a plurality of tanks, the uppermost stage is composed of a processing tank having a crushing section equipped with a solid organic waste input port and a processing section, and the lower stage is composed of a processing tank mainly comprising the processing section, and It is desirable to adopt a mechanism in which the processed products sequentially overflow from the end plate of the processing tank. Then, in order to collect the processed material (which is a dry powder) that overflows from the end plate of the final stage tank, a stocker is installed adjacent to this end plate, and after the specified amount is collected, the discharge door is opened. The stocker can be taken out.

It is also possible to arrange a middle partition plate in at least the processing section of the processing tank so as to substantially divide the inside of the processing tank into a plurality of tanks so as to produce a dam effect of the processed material.

Explaining the shape structure of the stirring arm arranged on the rotating shaft, the shape of the stirring arm in the crushing section is as follows.
It is desirable that the cross-section has a polygonal shape (including a circle and an ellipse) and that it is arranged in close proximity to a comb-shaped fixed arm provided at the bottom of the processing tank in order to enhance the crushing effect.

The stirring arm in the processing section may be provided perpendicularly to the rotation axis, but may be inclined by a predetermined angle so as to swing the processed material without stagnation at the bottom of the processing tank. The shape of the stirring arm when provided perpendicularly to the rotating shaft is generally rod-shaped, strip-shaped, or rod-shaped or strip-shaped with different widths at the upper and lower ends, and these are arranged radially around the rotating shaft. Set up. Further, in the case where the stirring arm is provided so as to be inclined with respect to the rotation axis, the shape of the stirring arm may be further made into a disc shape.

A heating means is provided on the outer wall of the processing tank, for example, the bottom of the processing tank, and is usually heated and held at about 50 to 80 ° C. When the processed material is stagnant, seizure occurs and the paste adheres to the bottom of the processing vessel in a paste form. It will reduce the conduction state. Therefore, it is effective to swing the processed material with the stirring arm.

As the heating means provided in the processing tank,
For example, a sheathed heater is provided in a U shape, or a plate-shaped heater is provided. A plate-shaped heater is preferable because it can uniformly heat the tank wall. In any case, it is important to have a constitution in which the treatment section is heated and held so that fermentation can proceed sufficiently, and it is desirable to control the temperature with a thermostat for temperature adjustment.

The rotation direction and rotation schedule for rotating the stirring arm in the processing tank will be explained. It is possible to rotate the stirring arm in a fixed direction continuously or intermittently, but it is possible to rotate in the forward direction, stop, and rotate in the reverse direction. It is more effective to drive each of the three sequences at a predetermined time interval.

As a preferred example of the present invention, a constitutional example in which the treatment tank is divided into upper and lower two stages will be shown below, and the means for achieving the object of the present invention will be described more specifically. First, the first configuration example is an apparatus for performing aerobic fermentation treatment of solid organic waste in a treatment tank, and box-shaped treatment tanks are arranged in upper and lower two stages, and air in the upper treatment tank is arranged. A heat exchanger for connecting the air intake pipe and the air return pipe, the air intake pipe for taking in the air and the air return pipe for returning the air to the lower treatment tank are provided outside the sealed treatment tank, and the heat exchanger. Is provided with a blower means for sucking and blowing outside air, and the heat exchanger is connected to the air intake pipe in a vertical and cylindrical inlet pipe, and the air return pipe is connected to a vertical and cylindrical outlet pipe. A pipe and a plurality of heat exchange pipes connected to the inlet pipe and the outlet pipe and extending in a substantially horizontal direction, and a drainage pipe is provided below the outlet pipe, and a heating means is provided in the treatment tank. A heat-retaining means is provided so that aerobic bacteria can easily act inside the treatment tank. Configured to hold a constant temperature, in the middle of the air return pipe, in which the air in the processing tank provided with a circulation fan for circulating the heat exchanger.

In the second configuration example, a waste input port is provided in a part of the upper processing tank, and an upper end plate is provided on the side of the upper processing tank opposite to the waste input port, so that the upper processing is performed. It is formed so that the processed material in the tank overflows the upper end plate and drops into the lower processing tank, and the lower processing tank is formed shorter than the upper processing tank and the lower end plate is provided at one end. And a discharge stocker having a length corresponding to the difference in length between the upper and lower processing tanks is provided below the upper processing tank, and the processed material overflowing the lower end plate of the lower processing tank is It is formed so as to fall into the waste stocker, and a rotating shaft, a bearing, and a drive means for driving the rotating shaft are provided in each of the upper and lower processing tanks, and a stirring arm is provided on the rotating shaft. Multiple agitators under the waste inlet of the treatment tank and on the rotating shaft A position between, which fixed arm extending from the tank bottom, between the fixed arm and stirring arms, in which the entered waste was formed as crushed pinched.

Further, a deodorizing communication pipe is provided in a part of the air return pipe, a deodorizing means is provided in connection with the deodorizing communication pipe, an air discharge pipe is provided in connection with the deodorizing means, and the deodorizing means is activated sludge. A deodorizing tank in which the air is discharged from the deodorizing communication pipe into the activated sludge and a pump, and the air discharged from the activated sludge is discharged to the atmosphere through the air discharge pipe. Is.

[0022]

The first feature of the present invention is to efficiently remove the water contained in food waste, which is said to be about 80% on average, and to efficiently dispose of the processed material in the fermentation tank (processing tank) in the crushing section. The purpose is to crush, mix with seeds, and ferment with aerobic species in the treatment section and dry.

The inside of the treatment tank is configured to be maintained at a temperature at which fermentation is sufficiently carried out by aerobic bacterial species, for example, 50 to 80 ° C., and specifically, an air intake pipe for taking in the air of the treatment tank, and the treatment tank. An air return pipe for returning air to, and a heat exchanger connected to the air intake pipe and the air return pipe,
The heat exchanger is provided with a blowing unit that sucks the outside air and blows it.

With this structure, the steam generated by being heated in the processing tank enters the heat exchanger through the air intake pipe and is cooled by the cold outside air to cool the outside of the water. Are condensed in the heat exchanger,
The liquid droplets are discharged to the outside of the device through the drain (drainage pipe).

Most of the dewatered air is returned from the air return pipe to the inside of the processing tank (processing section), and the rest is provided with a deodorizing communication pipe in a part of the air returning pipe and is connected to the deodorizing communication pipe. Since the deodorizing means is provided and the air discharging pipe is provided in connection with the deodorizing means, the odorous molecules are decomposed by the bacteria in the deodorizing means, and are discharged in an odorless state. By the amount of the discharged air, the internal pressure in the processing tank decreases, so that fresh air flows in from a separately provided air intake. The air intake amount corresponds to the amount of air required (consumed) during fermentation of the processed product in the processing section.

By cyclically repeating such steps, the air in the treatment tank is efficiently and continuously removed of water, the discharged air is deodorized, and fresh air flows in to perform aerobic fermentation. Maintained.

The second feature of the present invention is to make the space factor of the apparatus maximal, to make the processing apparatus compact and have good cost performance by using the processing tank for multiple purposes and considering the arrangement of the equipment. Especially.

That is, the processing tank is for crushing food waste,
It carries out four functions in total: mixing the input food waste and fermentative bacteria, supplying air to the fermentative bacteria, and transferring the processed material from upstream to downstream.

Explaining in a preferred embodiment, the box-shaped treatment tanks are provided in the upper and lower two stages, and a waste input port is provided in a part (crushing part) of the upper treatment tank so that the inside of the upper treatment tank ( It is formed so that the processed material of the processing section) overflows the end plate and falls into the lower processing tank. Further, in a more preferable example, the lower treatment tank is formed shorter than the upper treatment tank, and below the upper treatment tank, a waste stocker having a length corresponding to the difference in length between the upper treatment tank and the lower treatment tank is provided. Is provided so that the processed material that overflows the end plate of the lower processing tank falls into the discharge stocker. Further, a stirring arm is provided on each of the rotating shafts of the upper and lower two processing tanks, and the tank bottom is located below the waste inlet of the upper processing tank and between the plurality of stirring arms of the rotating shaft. A fixed arm that extends further is provided, and the input waste is sandwiched and crushed between the stirring arm and the fixed arm.

By doing so, when the garbage is put in from the waste introduction port, the fermenting bacteria (aerobic species) are preliminarily charged in the lower part of the treatment tank, so that the stirring arm rotates, First, in the crushing unit located below the waste input port, the injected waste is crushed by being sandwiched between the stirring arm and the fixed arm extending from the bottom of the tank, and then the waste is rotated as the stirring arm rotates. The fermentation bacteria are mixed. At the same time, air is supplied to the fermenting bacteria by stirring.

When food waste is input from the waste input port,
If an overflow occurs there, and if there is a partition plate, the partition plate flows into the adjacent compartment from the upper part, and further overflows from the end plate and falls, and from the upper processing tank to the lower processing tank, the lower processing tank From the treatment tank, it flows into the waste stocker and is transferred. When there is no partition plate, the processed product naturally overflows from the end plate of the upper processing tank and falls into the lower processing tank.

Such an arrangement is extremely rational, has a good space factor, makes the apparatus compact, and
Good cost performance.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. <Embodiment 1> FIG. 1 is a schematic view showing an example of the processing apparatus of the present invention in which the processing tank is a box-shaped single tank.
It comprises a crushing section 1a and a processing section 1b. The crushing section 1a has a comb-shaped fixed arm 24 fixed to the bottom of the tank, and the processing section 1b is provided with an end plate 16 at the terminal end. A waste input port 15 is provided above the crushing unit 1a in the processing tank 1 so that it can be opened and closed at any time. A waste stocker 18 is disposed adjacent to the end plate 16 of the processing section 1b, and a discharge door 26 for taking it out is provided on the wall surface of the processing tank 1 and constitutes a part of the outer wall.

The crushing section 1 is provided at the center of the processing tank.
a, a rotary shaft 20 having one end connected to the driving means 22 penetrating the processing unit 1b is provided, and a plurality of stirring arms 23 are radially fixed to the rotary shaft 20 at predetermined intervals. There is. A heater 1 is provided as a heating means on the outer wall of the bottom of the processing tank.
3 is provided and is maintained at a temperature at which waste is efficiently and fully fermented.

A heat exchanger 6 is connected to the crushing section 1a and the processing section 1b of the processing tank 1 via an air intake pipe 4 and an air return pipe 5, and an air intake port is provided on the high temperature side of the heat exchanger 6. 27 is open to the outside. On the other hand, on the low temperature side of the heat exchanger 6, a drain (drainage pipe) 11 for discharging water generated by condensation of water vapor by heat exchange to the outside is provided, and in the middle of the air return pipe 5. The circulation fan 14 is provided to forcibly return the air to the processing section 1b side. Therefore, due to the action of the circulation fan 14, the gas in the processing tank is circulated as a circulation system through the air intake pipe 4, the heat exchanger 6, and the air return pipe 5, and the air in the middle of the circulation system is circulated. An appropriate amount of fresh air is sucked into the circulation system through the intake port 27 and is taken in to effectively promote the fermentation of the treatment section 1b. The heat exchanger 6 is air-cooled by a blower 7.

A deodorizing communication pipe 28 is branched and connected from the air return pipe 5 between the circulation fan 14 and the processing unit 1b, and the pump 3
3, a predetermined pressure is applied to constitute the deodorizing treatment means 29, and the deodorizing treatment means 29 is jetted into the deodorizing tank 31 in which activated sludge is filled,
Deodorize and exhaust to the outside. In addition, this deodorization treatment,
The amount of air discharged to the outside is almost the same as the air intake port 27 described above.
The amount corresponds to the amount of air taken in, that is, the amount of air consumed by fermentation in the treatment tank 1.

An input door 25 is provided above the waste input port 15 of the processing tank 1, and an output door 2 is provided at the output stocker 18.
6 are provided respectively to separate the inside of the tank from the outside air and prevent the dissipation of heat and odor.

The operation mechanism of this apparatus will be described. First, when garbage is introduced from the waste introduction port 15 of the treatment tank 1, the solid matter is finely crushed by the crushing unit 1a, and the treatment unit 1b is crushed.
Move to. The processing section 1b is filled with a predetermined amount of aerobic bacterial species collected from compost only in the first operation. In the treatment section 1b, the crushed organic substance to be treated is fermented and decomposed by aerobic bacteria. In order to promote the fermentation decomposition, the treatment tank is constantly kept at a suitable temperature of 50 to 80 ° C. by a thermostat (not shown) of the heating means 13. When a predetermined amount of the processed material (compost) is accumulated in the tank, it overflows from the end plate 16 and falls to the stocker 18, and is collected and opened to the outside by opening the discharge door 26.

The gas circulation system connecting the inside of the processing tank 1 and the heat exchanger 6 will be described below. The high temperature and high humidity gas (mainly air accompanied by odor) flows from the crushing section 1a into the air intake pipe 4 Is introduced into the high temperature side of the heat exchanger 6 (at this time, a predetermined amount of fresh air is taken into the circulation system from the air intake 27), and the steam is heat-exchanged by air cooling to be condensed into water, which is the low temperature side. Through the drain pipe 11 to the outside. Further, the deodorizing means 29 is used for the amount of air taken in from the air intake port 27 and taken into the circulation system.
Thus, the odor is removed and exhausted, and the inside of the circulation system is always maintained at a state close to the atmospheric pressure.

This device is capable of continuously inputting waste with a relatively small device configuration and is easy to operate and maintain. Therefore, especially in the food processing, restaurant industry, etc. If it is applied to the industrial field with generation, it will not have any adverse effect on the surrounding environment without relying on a waste disposal specialist like before, so install it in a familiar place.
It has the effect that it can be processed. In addition, the recovered compost is also a dry, powdery, odorless compost that can be recovered as a fertilizer with extremely high added value as a fertilizer for crops, horticulture, and other general plant cultivation, and is a point of recycling waste. Is also preferable.

<Embodiment 2> This example shows another example of the apparatus of the present invention in which the treatment tank has a two-stage structure.
This will be described with reference to FIG. 2 is a side view with the outer box removed, and FIG. 3 is a rear view of the apparatus seen from the P direction in FIG. First, referring to the drawings, the apparatus configuration will be described. 1 is a processing tank, which is formed in a horizontally long box shape, and is composed of an upper processing tank 2 and a lower processing tank 3.

Reference numeral 4 is an air intake pipe for taking in air from the upper processing tank 2, and reference numeral 5 is an air return pipe for returning air to the lower processing tank 3. The air intake pipe 4 and the air return pipe 5 are provided outside the processing tank 1, and similarly, the processing tank 1
Is connected to a heat exchanger 6 provided adjacent to the outside of the.

Reference numeral 7 is a blowing means for sucking the outside air into the heat exchanger 6 to blow it. The heat exchanger 6 is a vertical and cylindrical inlet pipe 8 connected to the air intake pipe 4.
And a vertical and tubular outlet pipe 9 connected to the air return pipe 5, and a plurality of heat exchange pipes 10 connected to the inlet pipe 8 and the outlet pipe 9 and extending in a substantially horizontal direction. ing.

Below the outlet pipe 9, a drainage pipe 11 serving as a drain is provided, and this drainage pipe 11 has a water discharge hole 12 opened to the outside under the apparatus. The treatment tank 1 is provided with a heating means 13 and a heat retaining means (not shown), and is formed so that the temperature inside the treatment tank 1 is constantly maintained at 50 ° C. to 80 ° C. by controlling the temperature by a thermostat. A circulation fan 14 for circulating the air in the treatment tank 1 to the heat exchanger 6 is provided in the middle of the air return pipe 5.

FIG. 4 is a vertical cross-sectional view of the main part of the processing tank 1, where the left and right directions are opposite to those in FIG. 3 (rear view). Hereinafter, the configuration of the processing tank 1 will be described in more detail with reference to this drawing. The upper processing tank 2 can be divided into a crushing section 2a and a processing section 2b adjacent to the crushing section 2a according to its function. A waste input port 15 is provided above the crushing section 2a, and the waste input port 15 is opposite to the waste input port 15. An upper end plate 16 is provided at the end of the processing portion 2b on the side. This upper end plate 16
Has a function of a dam for storing a certain amount of the processed material in the processing section 2b, and by arbitrarily selecting this height, the level at which it overflows into the lower processing tank 3 can be adjusted.

Seeds 17 for fermentation are preliminarily charged in the bottoms of the upper treatment tank 2 and the lower treatment tank 3, respectively. However, the inoculum 17 is required to be charged only during the first operation, and once the operation is started to a steady state, there is always sufficient aerobic bacteria due to self-proliferation in the treatment tank, so it is not necessary to newly inject it. .

Below the upper processing tank 2 (specifically, the crushing section 1
A discharge stocker 18 having a length corresponding to the difference in length between the upper and lower processing tanks is provided (below a), and a lower end plate 19 is provided on the side of the discharge stocker 18 of the lower processing tank 3. Is provided.

Each of the upper processing tank 2 and the lower processing tank 3 is provided with rotating shafts 20 and 20 ', bearings 21, and driving means 22 for driving the rotating shafts 20 and 20'. The rotary shafts 20 and 20 'are provided with a plurality of stirring arms 23, and further, the waste material introduction port 15 of the upper processing tank 2 is provided.
The lower crushing section 2a has a plurality of stirring arms 2 of the rotary shaft 20.
A fixed arm 24 extending from the bottom of the tank is provided at a position between 3.

The thrown waste is crushed by being sandwiched between the stirring arm 23a and the fixed arm 24 of the crushing unit 2a, further gradually washed away by the processing unit 2b, and rotated to the bottom of the tank by the rotation of the stirring arm 23b. It is mixed with the inoculum 17 that has been charged.

The processed material fermented and gradually washed away by throwing in the waste material overflows the upper end plate 16 of the upper processing tank 2 and falls into the lower processing tank 3. The part that cannot be fully fermented in the upper stage is completely fermented in the lower treatment tank 3. The processed material that has flowed in the processing tank 3 overflows the lower end plate 19 of the processing tank 3, falls into the discharge stocker 18, and is recovered as useful powdery compost.

An input door 25 is provided above the waste input port 15 of the upper processing tank 2, and an exhaust door 26 is provided in the discharged material stocker 18 of the lower processing tank 3 so that the outside air and the inside of the processing tank 3 can be protected. To prevent the dissipation of heat and odor.

FIG. 5 is a rear view of the processing apparatus with the outer box and the blowing means removed, as viewed from the direction P in FIG. It is intended to specifically describe a piping relationship for connecting to the tank 1 and a configuration example of the deodorizing means 29. An air intake 27 for taking in fresh air is provided in the middle of the path connecting the air intake pipe 4, the air return pipe 5, and the heat exchanger 6 connected to them.

A part of the air return pipe 5 (connected to the low temperature side of the heat exchanger 6) between the processing tank 1 and the circulation fan 14 (see FIG. 2) is provided with a deodorizing communication pipe 28. A deodorizing means 29 is connected to the deodorizing communication pipe 28.
The deodorizing means 29 is provided with an air exhaust pipe 30 connected to it.

The deodorizing means 29 is composed of a deodorizing tank 31 in which activated sludge is enclosed, a blowing pipe 32 for blowing air coming from the deodorizing communication pipe 28 into the activated sludge, and a pump 33. The air discharged from the activated sludge is discharged to the atmosphere through the air discharge pipe 30.

The processing apparatus having the two-stage processing tank 1 has a feature that it can be downsized without further lowering the processing capacity, as compared with the apparatus having the single tank of the first embodiment. . In addition, an example of waste disposal by actually inputting raw garbage using the processing apparatus of the second embodiment will be specifically described in the fifth embodiment.

<Embodiment 3> FIG. 6 shows a further different example of the apparatus of the present invention, and is a side view with the outer box removed, as in FIG. 2 of Embodiment 2. The characteristic of this device is that the side of the processing tank 1 is supported by an independent sub-frame 35, and other parts such as the heat exchanger 6 are mounted on the main frame 36 to improve the assemblability of parts and service maintenance of the device. It was made.

The air intake pipe 4 and the air return pipe 5 are formed so as to be detachably attached to the processing tank 1 by the pipe fastening means 34.

The processing tank 1 is supported by the sub-frame 35, and is formed separately from the main frame 36 which supports the heat exchanger 6, the blowing means 7 and the deodorizing means 29.

On the sub-frame 35, the rotary shafts 20 and 20 'of the upper stage 2 and the lower stage 3 of the processing tank 1, bearings (not shown), upper,
A sprocket 37 connecting the lower rotary shafts 20 and 20 ', a chain 38, and a heat insulating material (not shown) are connected, and a part 39 of the outer box is also connected.

Reference numeral 40 denotes a frame fastening means, which is the sub-frame 3
5 and the parts connected thereto are formed so that they can be easily removed from the main frame 36 at the time of service maintenance or the like.

<Embodiment 4> FIG. 7 shows a processing tank 1 of Embodiment 2.
A further different apparatus example of the present invention in which the above structure is improved is shown, and a vertical sectional view of a processing tank portion is shown. The features of this apparatus are that the partition plate 41 is provided in the processing section and that the stirring arm 23 of the processing section is inclined with respect to the rotating shafts 20 and 20 ', and the width of stirring is further expanded. As a result, the processed material is prevented from being stagnant at the bottom of the processing tank and sticking to the wall surface.

That is, similarly to the second embodiment, the upper processing tank 2 and the lower processing tank 3 are provided with rotating shafts 20 and 20 ', respectively.
And a plurality of stirring arms 23 are provided. The stirring arm 23 is attached at an inclination angle in the range of 3 ° to 45 ° with respect to the horizontal direction of the rotary shafts 20 and 20 '.

By tilting the stirring arm 23 of the processing section in this way, when the rotating shafts 20 and 20 'are rotated, the stirring width is enlarged in proportion to the inclination of the stirring arm, and a vertical stirring arm is provided. Compared with this, a wider stirring motion can be performed, and the processed material can be effectively rocked.

Further, the upper processing tank 2 or the lower processing tank 3 is provided with an intermediate partition plate 41. In this figure, the number of sheets is remarkably one, but a plurality of sheets can be provided at a predetermined interval if necessary. By doing so, the processed material in the fermenter 1 moves to the adjacent section by overflowing the intermediate partition plate 41, and therefore, when a large amount of waste is input from the waste input port 15, the processing is performed. It is possible to prevent the material from flowing from the upper end plate 16 into the lower processing tank 3 at a time.

In this example, the inclination direction of the stirring arm 23 is the same in both the upper and lower stages, but it is not always necessary to align them in this manner, and the motion width of the stirring arm during rotation is substantially expanded. Any direction is acceptable as long as it is.

As described above, the representative apparatus configuration examples are shown in Examples 1 to 4, but in any of the apparatuses, the rotating direction of the stirring arm 23, that is, the method of driving the rotating shaft 20 (20 ') is, for example, Select from among the methods that rotate continuously in a fixed direction, rotate intermittently after a predetermined stop period, and control the rotation with three drive sequences: forward rotation, stop period, and reverse rotation. You can

In the experimental example in which the leftover of the cafeteria was used as food waste, the driving method was particularly good.
In the processing example shown in (1), this method was used.

<Embodiment 5> Using the apparatus shown in FIGS. 2 to 5 of Embodiment 2, as garbage waste, the average composition ratio is 50% cooked rice, 10% noodles, 20% meat / fried, vegetables.・ The leftovers of the cafeteria consist of 20% of fruit, and the water content is 70 ~
Waste input port 1 using 75% solid organic waste
The test was carried out at an average rate of 16 kg from 5 to 1 day. 20
The total daily input was 325 kg.

The ambient temperature condition was an outside air temperature of 5 to 15 ° C., and the temperature in the processing tank 1 at this time was maintained at 55 to 65 ° C. Further, the stirring arm 23 was rotated by the drive means 22 in the sequence of rotation in the forward direction for 3 minutes, stop for 3 minutes, and reverse rotation for 3 minutes.

The internal volume of the processing tank is 200 for the upper and lower stages.
It is liter (distribution of upper and lower tiers is a ratio of 4: 3), and compost (aerobic bacterium) containing soil bacteria suitable for temperature conditions of around 60 ° C as fungus species 17 is combined with the upper and lower tiers before starting operation. 50 kg was evenly laid on the bottom of the processing tank.

The amount of compost emitted during the test was 3 on average per day.
The total amount discharged in 20 days was 58 kg.
From these results, the reduction rate of raw garbage is about 1/6, the decomposition rate is about 30 to 40%, and the moisture content of the discharged matter is as low as 15% or less. It was confirmed that the compost is easy to handle with less waste.

For deodorization, the activated sludge used for water treatment in the water purification plant was packed in the deodorization tank 31, and the gas discharged from the processing tank 1 under the same outside air temperature conditions as above for the same period. Is blown with an air flow equivalent to the oxygen consumption required for fermentation (corresponding to the amount of fresh air taken in), and the gas discharged into the air has an extremely low odor, producing a special odor other than the original odor of activated sludge. I confirmed that it would not come out.

[0073]

As described above, according to the present invention, the intended purpose can be achieved. In other words, it does not scatter offensive odors or large amounts of steam to the surroundings, does not require the addition of sawdust or rice husks as a water content adjusting material, and it is possible to throw in garbage at any time, and it is a solid organic waste with high speed and high decomposition rate. It is possible to provide a processing apparatus for the object.

Further, it is possible to provide a small-sized solid organic waste treatment apparatus which requires very little installation space when placed in a kitchen or the like of a dining room. Furthermore, the recovered compost can be effectively used as a fertilizer for plant growth, for example, and garbage can be recovered and reused as valuables, which is an extremely important point in terms of industrial contribution from the viewpoint of environmental protection.

[Brief description of drawings]

FIG. 1 is a schematic partial cross-sectional view showing the configuration of a solid organic waste treatment apparatus which is an embodiment (Example 1) of the present invention.

FIG. 2 is a side view of the processing apparatus in the same manner as another processing apparatus configuration example (Embodiment 2) with an outer box removed.

FIG. 3 is a rear view of the processing apparatus as seen from the direction P of FIG.

FIG. 4 is a front vertical sectional view of the main part of the processing tank of the same.

FIG. 5 is a rear view of the processing apparatus, also viewed from the direction P in FIG. 2, in a state where the outer box and the blowing unit are removed.

FIG. 6 is a side view of the processing apparatus in the same manner as another processing apparatus configuration example (Example 3) with an outer box removed.

FIG. 7 is a front vertical cross-sectional view of a main part of a processing tank which is another different processing apparatus configuration example (Example 4).

[Explanation of symbols]

1 ... Treatment tank, 1a ... Crushing section,
1b ... Treatment part, 2 ... Upper stage (treatment tank), 3 ... Lower stage (treatment tank), 4 ... Air intake pipe, 5 ... Air return pipe, 6 ... Heat exchanger, 7 ... Blower, 14 ... Circulation fan, 15 … Waste input port,
17 ... Inoculum, 18 ... Effluent stocker, 20, 20
'... rotary shaft, 23 ... stirring arm, 24 ... fixed arm, 29 ... deodorizing means, 35 ... sub-frame,
36 ... Main frame, 40 ... Frame fastening means, 41
... a partition board.

Claims (15)

[Claims] 1. A crushing unit having at least a solid organic waste charging port, and a process in which a crushed object to be processed is maintained at a constant processing temperature capable of sufficiently fermenting it in the presence of aerobic bacterial species. A treatment tank having a section, and returning the gas containing steam from the crushing section side of the treatment tank to the treatment section side of the treatment tank through a heat exchanger, and the inside of the treatment tank and the inside of the heat exchanger. A gas circulation means for circulating, an air intake port arranged on the high temperature side of the heat exchanger to take in air corresponding to the amount consumed in the fermentation treatment by aerobic bacteria in the treatment tank from the outside, A gas corresponding to the amount of air taken in at the air intake through the deodorizing tank by branching and connecting the deodorizing connecting pipe on the path for returning the gas heat-exchanged from the low temperature side of the heat exchanger to the processing tank side. Deodorizing treatment means for deodorizing and exhausting to outside, Processor of solid organic wastes formed by and a stocker for recovering treated product was treated with sense tank. 2. The solid organic material according to claim 1, wherein a drain for discharging water produced by condensation of steam by heat exchange to the outside is provided on the path for returning the heat-exchanged gas to the processing tank. Waste treatment equipment. 3. A comb-shaped fixed arm is provided at the bottom of the tank at the crushing section in the processing tank, and a stirring arm is provided at each rotary shaft passing through the processing section from the crushing section. The stirring arm located in the crushing section slips between the fixed arms during rotation,
The solid organic waste treatment apparatus according to claim 1, having a configuration that causes a function of crushing the solid organic waste. 4. A circulation fan for circulating the gas in the treatment tank is provided on the path for returning the heat-exchanged gas to the treatment tank, and the heat exchanger is sucked in and blows outside air. The solid organic waste treatment device according to claim 1, which is provided with a means. 5. The processing tank is divided and arranged in a plurality of multi-stage tanks, and the uppermost step is constituted by a processing tank having a crushing section having a solid organic waste input port and a processing section, and the lower step is a processing section. The solid organic waste treatment apparatus according to any one of claims 1 to 4, which comprises a treatment tank mainly composed of the above, and has a mechanism in which the treatment product sequentially overflows from an end plate of each treatment tank. 6. An intermediate partition plate is provided in at least the processing section of the processing tank to substantially divide the inside of the processing tank into a plurality of tanks.
The solid organic waste treatment device according to any one of claims 1 to 5, wherein the treated product has a dam effect. 7. The apparatus for treating solid organic waste according to claim 1, wherein the shape of the stirring arm in the crushing section is rod-shaped. 8. The stirring arm in the processing section is tilted at a predetermined angle with respect to a rotation axis, and the stirring arm has a rod shape.
The solid organic waste treatment device according to any one of claims 1 to 6, which is in the form of a strip, a disc, or a rod or strip having different widths at the upper and lower ends. 9. A drive mechanism for rotating a stirring arm in the processing tank is connected to a rotation shaft, and a rotation schedule is driven at predetermined time intervals in a sequence of forward rotation, stop, and reverse rotation. 9. The solid organic waste treatment device according to claim 1. 10. An apparatus for performing aerobic fermentation treatment of solid organic waste by a treatment tank, wherein a box-shaped treatment tank is used for upper and lower sides.
The air intake pipe for taking in the air from the upper treatment tank and the air return pipe for returning the air to the lower treatment tank are provided outside the sealed treatment tank, and the air intake pipe and the air return pipe A heat exchanger connected to the pipe and a blower means for sucking and blowing outside air into the heat exchanger are provided, and the heat exchanger is connected to the air intake pipe in a vertical and tubular inlet pipe, and A vertical and cylindrical outlet pipe connected to the air return pipe, and a plurality of heat exchange pipes connected to the inlet pipe and the outlet pipe and extending in a substantially horizontal direction,
Further, a water draining pipe is provided below the outlet pipe, and heating means and heat retaining means are provided in the treatment tank so as to maintain the inside of the treatment tank at a constant temperature at which aerobic bacteria are easily activated. A treatment apparatus for solid organic waste, which is provided with a circulation fan for circulating the air in the treatment tank to a heat exchanger in the middle of the return pipe. 11. A waste input port is provided in a part of the upper processing tank, and an upper end plate is provided on the opposite side of the upper processing tank from the waste input port so that the processed material in the upper processing tank is The upper end plate is formed so as to overflow and drop into the lower processing tank, and the lower processing tank is formed shorter than the upper processing tank, and a lower end plate is provided at one end to form the upper processing. A discharge stocker with a length corresponding to the difference in length between the upper and lower processing tanks is provided below the tank, and the processed material that overflows the lower end plate of the lower processing tank falls into the discharge stocker. The upper and lower processing tanks are each provided with a drive means for driving the rotating shaft, the bearing, and the rotating shaft, a stirring arm is provided on the rotating shaft, and the waste is put into the upper processing tank. At the bottom of the mouth and between the multiple stirring arms of the rotary shaft, Which fixed arm extending from the parts, between stirring arms the fixed arm, the processing apparatus of solid organic waste formed comprising claim 10, wherein as the entered waste is crushed pinched. 12. An air intake pipe for taking in the atmosphere is provided in the middle of a path connecting the air intake pipe, the air return pipe, and the heat exchanger connected thereto, and one of the air return pipes between the circulation fan and the processing tank is provided. A deodorizing communication pipe, a deodorizing means connected to the deodorizing communication pipe, an air discharge pipe connected to the deodorizing means, and the deodorizing means includes a deodorizing tank filled with activated sludge and an activated sludge. The solid organic substance according to claim 10 or 11, which is formed by a blow-in pipe and a pump for blowing air coming from the deodorizing communication pipe into the air, and is formed so that the air discharged from the activated sludge is discharged to the atmosphere through the air discharge pipe. Waste treatment equipment. 13. An air intake pipe and an air return pipe are formed so as to be detachably fastened to a processing tank by fastening means, and a sub-frame supporting the processing tank is provided with a heat exchanger, a blowing means, and a deodorizing means. It is formed as a separate body from the main frame that supports, and the upper and lower rotary shafts, bearings, upper, and
By connecting the sprocket that connects the lower rotating shaft, the chain, and the heat insulating material, and also connecting a part of the outer box, the sub frame and the parts connected to it can be easily removed from the main frame during service and maintenance. The solid organic waste treatment device according to claim 10, which is formed so as to be removable. 14. The solid organic material according to claim 10, wherein the stirring arm attached to the rotary shaft is arranged so as to be inclined at an angle of 3 ° to 45 ° with respect to the horizontal direction of the rotary shaft. Waste treatment equipment. 15. An intermediate partition plate is provided in at least one of the fermentation treatment section of the upper treatment tank and the lower treatment tank, and the products in the treatment tank are sequentially moved to the adjacent compartments by overflowing the intermediate partition plate. The solid organic waste treatment device according to any one of claims 10 to 14, wherein the solid organic waste treatment device is configured so as to extend.