JP5217007B2 - Garbage disposal equipment - Google Patents

Description

  The present invention relates to an environmentally friendly garbage disposal apparatus.

  The applicant once crimped plastic fibers and oriented them in bulk, and formed a disk (SL disk) with a high space ratio by fixing the intersection and the periphery with a binder, and the SL disk By preparing two activated sludge treatment tanks using slag and using these two tanks alternately, it is possible to operate continuously, and the need for complicated post-treatment such as dewatering, drying and combustion of sludge The invention of the operation method of the activated sludge treatment apparatus which does not have was carried out (refer patent document 1).

  Here, SL is an abbreviation for Synthetic fiber (synthetic fiber) Lock (adhesion).

Japanese Patent No. 2926380

  The present invention uses the SL disk in a garbage treatment apparatus, generates and uses methane gas from the garbage, and the garbage treatment apparatus has almost no annoying emissions such as sludge and residues. And it aims at providing the garbage processing apparatus which can be drive | operated continuously.

The present invention is to achieve the above object, a hopper having a crusher for crushing the garbage, a stirred tank for liquefied by stirring the garbage which is crushed by the crusher, the liquid in the agitation tank a secondary methane fermentation tank primary methane fermentation tank to the methane fermentation by introducing phased liquefied raw garbage and subsequent, the organic matter of the liquefied raw in waste after being treated in the secondary methane fermentation tank Precipitation provided with at least two sets of digestive fluid treatment tanks having SL plates formed to be digested by microorganisms, and supplementary organic matter feeding means comprising SL plates provided on the downstream side of the digestive fluid treatment tanks It has a tank, forming a fine eye SL material diced in the secondary methane fermentation tank together with the the primary methane fermentation tank to fill to form a SL composition of coarse diced Liquefied raw food from the agitation tank Is formed to flow to the second methane fermenter via the first methane fermenter and captures gas such as methane generated from the first methane fermenter and the second methane fermenter. Means for introducing the liquefied garbage from the second methane fermentation tank into at least one set of the digestive liquid treatment tanks of the digestive liquid treatment tanks, and performing a digestion treatment of the residual organic matter during this period. The other digestive juice treatment tank was formed so that the deposits disappeared or reduced by cannibalization of the microorganisms adhered to the SL plate.

  According to the present invention, there is provided a garbage disposal apparatus that can efficiently generate methane gas from garbage and that can use the methane gas and that can be continuously operated with a small amount of sludge and residue discharged. It has an effect that can be done.

It is a system diagram of the garbage processing apparatus of Example 1 of the present invention. It is a perspective view of a part of garbage processing apparatus of the said Example 1, a digestive-solution processing tank.

  The example of the form for carrying out the present invention is shown below.

  Embodiments of the garbage processing apparatus of the present invention will be described with reference to the drawings.

  FIG. 1 is a system diagram of a garbage disposal apparatus 1 of this embodiment.

  Reference numeral 2 denotes a hopper into which raw garbage is charged, and reference numeral 3 denotes a crusher for crushing the raw garbage.

  Reference numeral 4 denotes an agitation tank. The agitation tank 4 has an inner and outer double cylindrical structure, and an agitating screw 4b is suspended in the inner cylinder 4a.

  Reference numeral 5 denotes a heater, and the heater 5 is connected to a circulation pipe line 5a connected from the upper part of the side wall of the first methane fermentation tank 6a of the methane fermentation tank 6 to be described later to the lower part of the side wall. A supply line 5b for liquefied garbage from the stirring tank 4 is connected to the circulation line 5a on the upstream side of the heater 5, and a pump 5c interposed in the circulation line 5a. Thus, while the liquid in the lower part in the primary methane fermentation tank 6a is heated by the heater 5 and returned via the circulation line 5a, the metering pump 5d interposed in the supply line 5b The liquefied garbage in the stirring tank 4 was supplied to the circulation circuit 5a by a predetermined amount.

  6 is a methane fermenter, which consists of a primary methane fermenter 6a and a secondary methane fermenter 6b.

  The primary methane fermentation tank 6a and the secondary methane fermentation tank 6b have a sealed structure so that anaerobic methane fermentation is performed inside.

  The primary methane fermentation tank 6a is filled with a coarse SL material formed in a dice shape, and the other secondary methane fermentation tank 6b is formed with a fine SL material in a dice shape. Filled.

  Here, the SL material is a mat-like material having a large space ratio by crimping synthetic fibers, particularly plastic fibers, and orienting them in bulk, and fixing the intersections and the periphery with a binder such as a synthetic resin. It is what.

  Reference numeral 7 denotes a digestive liquid treatment tank, which includes a first treatment tank 7a and a second treatment tank 7b.

  An example of a perspective view of the digestive fluid treatment tank 7 is shown in FIG.

  That is, a is a semi-cylindrical tank, and a plurality of SL disks b are coaxially mounted on the rotation shaft so that the plurality of SL disks b are driven to rotate simultaneously.

  In addition, c is an introduction pipe and d is a discharge pipe.

  Reference numeral 8 denotes an auxiliary processing tank, and a plurality of mats 8 a made of SL material are installed in the auxiliary processing tank 8.

  Reference numeral 9 denotes a precipitation tank, which is connected to the downstream side of the auxiliary processing tank 8.

  Reference numeral 10 denotes a means for capturing methane gas generated in the methane fermentation tank 6 and includes a desulfurization device.

  11 indicates a gas tank for storing methane gas, 12 and 13 indicate a gas engine and a generator, respectively, and 14 indicates an exhaust heat recovery boiler.

  Next, the operation and effect of the garbage disposal apparatus of this embodiment will be described.

  The garbage thrown into the hopper 2 is crushed into small pieces by the crusher 3 and sent into the inner cylinder 4 a of the stirring tank 4.

  The stirring tank 4 is heated by the exhaust heat recovery boiler 14, and the garbage in the inner cylinder 4a is liquefied by this heating and stirring by the screw 4b to become liquefied garbage.

  And the liquefied garbage in this stirring tank 4 rises from the said cylinder 4a through the outer peripheral part, and is supplied to the circulation line 5a from the supply line 5b to the circulation line 5a by the metering pump 5d.

  In the primary methane fermentation tank 6a, methane fermentation bacteria adhering to the die-shaped SL material are interposed, and the liquefied garbage in the primary methane fermentation tank 6a is circulated in the circulation line 5a. While being heated by the heater 5, the organic matter is decomposed by the methane fermentation bacteria, and methane fermentation is performed with a residence time of about 10 hours.

  Here, the methane fermentation bacteria and the organic matter are forcibly brought into contact with each other by circulation in the circulation line 5a, and the methane fermentation bacteria adhere to the surface of the SL material in the first methane fermentation tank 6a. Becomes considerably high and fermentation progresses markedly.

  Subsequently, the liquefied garbage is sent to the second methane fermentation tank 6b, and methane fermentation is performed with the residence time of about 6 hours using the SL material and the methane fermentation bacteria in the second methane fermentation tank 6b.

  And also in this 2nd methane fermenter 6b, since a methane fermentation microbe adheres to the surface of SL material, microbe concentration becomes high considerably and fermentation progresses markedly.

  The methane gas generated in these methane fermentation tanks 6 a and 6 b is desulfurized via the methane gas capturing means 10 and collected in the gas tank 11.

  The fermented liquefied garbage (exfoliated liquid) remaining in the second methane fermentation tank 6b has a BOD load of about 3000 ppm, which is sent to the next digestion liquid treatment tank 7, Residual organic matter is digested by microorganisms.

  The digestive liquid treatment tank 7 includes a first treatment tank 7a and a second treatment tank 7b, and the second treatment tank 7a is paused while the desorption liquid is sent to the first treatment tank 7a for processing. .

  The organic matter in the desorption liquid sent to the first treatment tank 7a is digested by microorganisms that are densely parasitic on the SL plate b in the treatment tank, and the desorption liquid is purified.

  However, if the microorganisms parasitized on the SL disk b grow too much, the colonies of microorganisms may come off the SL disk and be washed away, so that the downstream side may be soiled. The processing can be continued by switching from the first processing tank 7a to the second processing tank 7b.

  In the processing tanks that are not in operation, the parasitic microorganisms cannibalize each other to reduce the number of the microorganisms so that the processing operation can be performed again.

  The detachment liquid purified in this way is sent to the auxiliary treatment tank 8, and further made free of organic matter by the SL material mat 8 a, and then sent to the precipitation tank 9.

  The methane gas in the methane gas tank 11 is not only used as a fuel for the gas engine 12 but can be further refined by the gas purification material 15 and filled into a cylinder 16 or the like to be used as fuel for the on-site vehicle 17. .

  As described above, the garbage processing apparatus of the present invention can efficiently generate methane gas from the garbage and use it, and also has a small amount of sludge, residue, etc., and can be operated continuously. It is a processing device.

  In this embodiment, the digestive juice treatment tank 7 is composed of the first treatment tank 7a and the second treatment tank 7b, but this is composed of a larger number of treatment tanks, and these are used by sequentially switching them. It may be.

  The present invention is used for garbage disposal apparatuses of various scales.

DESCRIPTION OF SYMBOLS 1 Garbage treatment apparatus 4 Stirring tank 5 Heater 5a Circulation line 5b Supply line 6 Methane fermentation tank 6a Primary methane fermentation tank 6b Secondary methane fermentation tank 7, 7a, 7b Digestive liquid processing tank 8a, b SL (Circle) plate 10 Methane gas capture means

Claims (2)

A hopper comprising a crusher for crushing garbage;
An agitation tank for agitating and liquefying the garbage crushed by the crusher ;
A secondary methane fermenter by introducing liquefied food waste has been turned into a liquid followed by a primary methane fermentation tank to the methane fermentation in the stirred tank,
At least two pairs of digested liquid treatment tank having a SL plate organics liquefied raw in waste after being treated in the secondary methane fermentation tank formed to digestion by microorganisms,
A settling tank provided with auxiliary organic predatory means consisting of an SL plate provided on the downstream side of the digestive liquid treatment tank ;
The primary methane fermentation tank is filled with a coarse SL material formed in a dice shape, and the secondary methane fermentation tank is filled with a fine SL material formed in a dice shape, The liquefied garbage from the stirred tank is formed so as to flow to the second methane fermenter through the first methane fermenter and methane generated from the first and second methane fermenters. Having a capturing means for capturing gas such as
The liquefied garbage from the second methane fermentation tank is introduced into at least one set of digestive liquid processing tanks of the digestive liquid processing tank to perform the residual organic matter digestion process, while the other digestion during the rest is performed. The liquid treatment tank is a garbage treatment apparatus formed so as to eliminate or reduce adhering substances by cannibalization of the microorganisms adhering to the SL plate. The agitation tank has an inner and outer double cylindrical structure, and a stirring screw is suspended in the inner cylinder, and the garbage crushed by the crusher is sent into the inner cylinder of the agitation tank. A supply pipe that is stirred by the agitating screw into liquefied garbage, rises from the lower part of the cylinder through the outer cylinder of the outer periphery, and communicates with and connects to the upper part of the outer cylinder Formed to be supplied to
The garbage processing apparatus of Claim 1 which connected the supply line from the said stirring tank to the said circulation line while connecting the circulation line which interposed the heater to the said 1st methane fermentation tank.

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