KR20090106969A - Method and apparatus for treatment of waste material - Google Patents

Abstract

PURPOSE: Waste treatment equipment is provided to process the waste with a simple process, and to prevent environmental deterioration due to odor generated in processing operation. CONSTITUTION: Waste treatment equipment(10) comprises a treatment container(12), a mixing unit, a blowing unit, a warming unit, and a deodorization unit. The treatment container receives waste, aerobic soil microbes, quicklime, a ferrous sulfate mixture(11). The mixing unit agitates the mixture in the treatment container. The blowing unit supplies the oxygen to the mixture in the treatment container. The warming unit heats the mixture. The deodorization unit is installed at an exhaust path of the gas.

Description

Waste disposal method and waste disposal facility {METHOD AND APPARATUS FOR TREATMENT OF WASTE MATERIAL}

TECHNICAL FIELD This invention relates to the technique of producing a fertilizer etc. by processing the waste containing sewage sewage and sewage sludge.

Conventionally, various methods have been proposed for waste treatment such as sewage sewage and sludge, but are related to the present invention, for example, "Patent method for producing fertilizer using waste" described in Patent Document 1 or Patent Document 2 And "treatment methods for perishable waste" described in the above.

Patent Document 1: Japanese Patent Application Laid-Open No. 2007-308322

Patent Document 2: Japanese Patent Application Laid-Open No. 2003-53391

Predetermined effects can be obtained by using the waste treatment techniques described in Patent Literatures 1 and 2, but in the case of the waste treatment technique described in Patent Literature 1, since many kinds of additive materials must be added to the waste, procurement of these additive materials, Much labor is required for storage and addition work. On the other hand, the waste treatment technique described in Patent Document 2 has at least a kind of additive material, but the treatment process is complicated, and many kinds of treatment apparatuses are required.

The problem to be solved by the present invention is to provide a waste treatment technique which requires little additional material for treatment and also has a simple treatment process.

Waste treatment method of the present invention is a pre-treatment step of adding and mixing aerobic soil microorganisms, quicklime and ferrous sulfate to the waste containing sewage sewage or sewage sludge, and decomposition while stirring while supplying oxygen to the mixture formed in the pretreatment step It is characterized by including the treatment step.

With such a configuration, since oxygen is supplied to the mixture of alkaline quicklime added to the waste and the heat of reaction of the acidic ferrous sulfate, the activity of the aerobic soil microorganisms added to the waste is activated and the fermentation proceeds. In addition, the organic matter in the waste is decomposed, and the water in the mixture is evaporated, and finally, a granular material which can be used as a fertilizer or the like is obtained. The additive materials required for such treatment are three types of aerobic soil microorganisms, quicklime and ferrous sulfate, and the treatment process is simplified because oxygen is supplied while these are added to the waste and mixed. In addition, since oxygen supply to the mixture only needs to be supplied with air in the atmosphere, complicated air supply means is also unnecessary.

Here, the mixture may be warmed in the decomposition treatment step. In winter, when the temperature is low and it is difficult for the temperature of the mixture to rise only by the heat of reaction, by heating the mixture, the activity of aerobic soil microorganisms can be activated to promote fermentation.

Next, the waste treatment plant of the present invention comprises a treatment vessel containing waste containing sewage or sewage sludge, aerobic soil microorganisms, quicklime and ferrous sulfate, stirring means for stirring the mixture in the treatment vessel, Characterized in that the air supply means for supplying oxygen to the mixture in the processing container. With such a configuration, the waste treatment method according to the present invention described above can be carried out smoothly.

Here, by providing a heating means for warming the mixture in the treatment vessel, it is possible to prevent an increase in the decomposition treatment time in winter or the like when the temperature is low and the temperature of the mixture is hard to rise only by the reaction heat.

Moreover, when the deodorization means containing aerobic soil microorganisms is provided in at least one part of the exhaust path of the gas which arises from the said mixture in the said processing container, the environmental deterioration by the odor which arises during a processing operation can be prevented.

Industrial Applicability According to the present invention, it is possible to provide a waste treatment technique with fewer additive materials required for decomposition treatment and a simple process.

(The best mode for carrying out the invention)

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described based on drawing. BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram which shows the waste processing facility which is embodiment of this invention, FIG. 2 is a vertical sectional view which shows the deodorizing apparatus which comprises the waste processing facility shown in FIG. 1, FIG. 4 is an enlarged view of a portion indicated by arrow B in FIG. 2.

As shown in FIG. 1, the waste processing facility 10 of this embodiment contains the waste containing sewage sewage and sewage sludge, the aerobic soil microorganism, and the mixture 11 of quicklime and ferrous sulfate. A plurality of screw conveyors 13a and 13b, which are stirring means for stirring the mixture 12 in the processing vessel 12, and the air feeding means for supplying oxygen to the mixture 11 in the processing vessel 12. The in-air supply pipe 14 and the hot water pipe 15 which is a heating means of the mixture 11 in the processing container 12 are provided.

The air supply pipe 14 is piped to a plurality of locations at the bottom of the processing vessel 12, and the hot water pipe 15 is piped at a plurality of locations in the area from the bottom of the processing vessel 12 to the side wall. A discharge path 16 for discharging the mixture 11 is drilled near the boundary between the bottom of the processing vessel 12 and the sidewall of the side wall, and a damper 19 for opening and closing the discharge path 16 is provided. It is. Below the discharge path 16, the belt conveyor 17 is arrange | positioned in parallel with screw conveyor 13a, 13b.

In addition, a hood 20 provided with an exhaust fan 21 is disposed above the treatment vessel 12 in order to suck in gas, water vapor, or the like containing malodor generated from the mixture 11 in the treatment vessel 12. The hood 20 and the deodorizing device 22 provided outdoors are connected to the exhaust pipe 23. The gas containing the odor sucked from the hood 20 flows into the deodorizing device 22 via the exhaust pipe 23, is deodorized therein, and the odorless gas is discharged from the exhaust container 24 into the atmosphere. do.

As shown in FIG. 2, the deodorizing device 22 includes a cylindrical casing 26 standing on the base 25, a deodorizing layer 26b formed on the inner surface of the casing wall 26a, and a casing 26. The shelf-shaped deodorizing material 27 provided in multiple stages in the lower area | region inside, and the cypress bark 28 of the chain-shape shape mounted on the horizontal member 30 arrange | positioned at the upper area | region are provided. A flow path 29 is provided between the ends of the plurality of stages of the deodorizing material 27 and the inner surface of the casing 26, and the flow paths 29 adjacent to each other up and down are arranged differently in phases of 180 degrees.

As shown in FIG. 3, the deodorizing material 27 is a disk shape in which the flow path 29 part was removed, and is formed by mixing and solidifying the aerobic soil microorganism which has deodorizing capability, and the inorganic hardening | curing agent containing silicon oxide. 2 and 3, a plurality of recesses 27a are provided on the upper and lower surfaces of the deodorizing material 27.

2 to 4, the deodorization layer 26b on the inner surface of the casing 26 sprays a mixture of aerobic soil microorganisms having a deodorizing capability and an inorganic hardener containing silicon oxide onto the inner surface of the casing 26. It is formed by solidification. Since the aerobic soil microorganisms exist in the deodorizing material 27 and the deodorizing layer 26b in a living state, organic substances which cause odor by the activity of the aerobic soil microorganisms when a gas containing odor comes into contact with these surfaces. This is broken down.

In addition, since the plurality of vent holes 30a penetrated in the up-and-down direction are drilled in the horizontally spaced member 30 having the chain-shaped cypress bark 28, the gas that has risen in the casing 26 is plural. It goes up through the ventilation hole 30a of the tree and contacts the cypress bark 28. At this time, the deodorizing material 27 and the deodorizing layer 26b remove the substance causing the odor which could not be decomposed, so that the odorless gas is discharged into the atmosphere from the exhaust cylinder 24 provided on the casing 26. .

Here, the treatment process in the waste disposal facility 10 is demonstrated. Wastes containing sewage sewage or sewage sludge, aerobic soil microorganisms which are spawns for advancing fermentation, quicklime and ferrous sulfate are introduced into the treatment vessel 12, and the mixture 11 is fed from the air supply pipe 14 to the mixture 11. While feeding air, the screw conveyors 13a and 13b are rotated and the mixture 11 is stirred. Thereby, oxygen is supplied to the mixture 11 whose temperature rose by the heat of reaction of alkaline quicklime and acidic ferrous sulfate. Although 10-15 weight part of quicklime and 3-7 weight part of ferrous sulfate are added with respect to 100 weight part of waste in this embodiment, since it is not limited to these addition ratios, it depends on the state of waste and the progress of reaction. You can change it.

As described above, if the stirring and oxygen supply to the mixture 11 are continued for a predetermined time, the aerobic soil microorganisms are activated and the fermentation proceeds, so that the organic substances contained in the mixture 11 are gradually decomposed. In this case, the mixture 11 is stirred while moving from the start end side to the end side of the processing container 12 by the rotation of the screw conveyors 13a and 13b, so that fermentation and decomposition are performed completely.

The mixture 11 moved to the end side of the processing container 12 by the rotation of the screw conveyors 13a and 13b is discharged from the discharge path 16 on the belt conveyor 17 and the end of the processing container 12 is terminated. It is conveyed back from the side toward the end side, and is fed back to the start end side of the processing container 12. In this way, the mixture 11 is moved in the processing container 12 by the screw conveyors 13a and 13b and the belt conveyor 17, whereby fermentation, decomposition and moisture evaporation are performed, and finally, it can be used as a fertilizer or the like. Granular material (not shown) is obtained. In addition, since the aerobic soil microorganisms exist in the completed granular material, if a part of the granular material is left in the processing container 12, the next waste treatment can be performed without adding aerobic soil microorganisms newly.

The additive materials required for the treatment in the waste treatment facility 10 are three types of aerobic soil microorganisms, quicklime and ferrous sulfate, and oxygen is supplied while stirring the mixture 11 formed by adding these to the waste. The treatment process is very simple since it can be done. Moreover, in this embodiment, since oxygen is supplied by sending air in air to the mixture 11, it is not necessary to provide a complicated air supply means.

In addition, it is difficult to raise the temperature of the mixture 11 only by the heat of reaction, and when fermentation does not proceed, hot water is passed through the hot water pipe 15 to warm the mixture 11, thereby activating the activity of the aerobic soil microorganisms. As a result, it is possible to prevent an increase in processing time in winter and the like with low temperature.

In addition, as described above, as a deodorizing means of the mixture 11 in the processing container 12, a part of the exhaust path (downstream of the exhaust pipe 23), such as a gas containing odor generated from the mixture 11, is provided. Since the deodorization apparatus 22 is provided, the environmental deterioration by the odor which arises during the waste disposal operation can be prevented.

INDUSTRIAL APPLICABILITY The present invention can be widely used in the field of the waste treatment industry as a treatment technique for making wastes containing sewage sewage and sludge useful.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which shows the waste processing facility which is embodiment of this invention.

FIG. 2 is a vertical cross-sectional view showing a deodorizing device constituting the waste processing facility shown in FIG. 1.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is an enlarged view of a portion indicated by the arrow line B in FIG. 2.

(Explanation of the sign)

10 Waste Disposal Equipment

11 mixtures

12 Disposal Container

13a, 13b screw conveyor

14 Air Supply Line

15 hot water pipe

16 Emission Path

17 belt conveyor

19 damper

20 hood

21 exhaust fan

22 Deodorizer

24 exhaust fan

25 base

26 casing

26a casing wall

26b deodorizing layer

27 Deodorant

27a recess

28 Cypress Bark

29 euro

30 diaphragm member

30a vent

Claims (5)

A pretreatment step of adding and mixing aerobic soil microorganisms, quicklime, and ferrous sulfate to wastes containing sewage or sewage sludge; and a decomposition treatment step of stirring while supplying oxygen to the mixture formed in the pretreatment step. Waste disposal method. The waste treatment method according to claim 1, wherein the mixture is warmed in the decomposition treatment process. Supplying oxygen to wastewater containing sewage or sewage sludge, aerobic soil microorganisms, a mixture of quicklime and ferrous sulfate, stirring means for stirring the mixture in the processing vessel, and a mixture in the processing vessel. Waste treatment equipment characterized by comprising a sending means to. 4. The waste disposal facility according to claim 3, wherein heating means for warming the mixture in the processing container is provided. The waste disposal facility of Claim 3 or 4 which arrange | positions the deodorization means containing an aerobic soil microorganism in at least one part of the exhaust path of the gas which arises from the said mixture.

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