JPH10174960A - Garbage treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize the quality of treated water, to shorten a treatment time and to prevent the generation of a malodor by preparatorily aerating ground garbage matter in specific aeration quantity and subjecting the aerated garbage matter to purifying treatment using highly conc. sludge and sending the supernatant water after treatment to a discharge tank while sending sedimented sludge to a sludge storage tank. SOLUTION: Garbage is ground by a garbage grinding apparatus 1 and sent to a raw water tank 2 under pressure to be temporarily stored. After a predetermined time is elapsed by the control of a control part 8, the ground garbage is sent to a first treatment tank 3 to be preparatorily aerated in aeration quantity of 1-5m<3> /hr per 1m3 of tank capacity and subsequently sent to a second treatment tank 4 to purify org. pollutant with highly conc. sludge. The generated sludge is sent to a sedimentation tank 5 to be separated into supernatant water and sedimented sludge. The supernatant water is sent to a discharge tank 7 to be temporarily stored before discharged out of the system. The sedimented sludge is stored in a sludge storage tank 6 to be reused in the raw water tank 2. By this constitution, aeration defficiency, the generation of bubbling, the spoilage of an org. pollutant and the generation of a malodor can be prevented and the quality of treated water can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garbage disposal apparatus for treating garbage discharged from kitchens such as food processing factories, canteens, and home kitchens.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram of a conventional kitchen waste disposal apparatus. Hereinafter, a conventional kitchen waste treatment apparatus will be described with reference to FIG. In FIG. 2, kitchen waste generated in a food processing factory, a kitchen such as a dining room, and a kitchen such as a home is put into a kitchen crushing and pumping device 1 and crushed by a disposer 1-1 in the kitchen crushing and pumping device 1. The crushed garbage is pumped to the first processing tank 3 through the pumping pipe 1-3 by the pumping pump 1-2.

The first treatment tank 3 has a sludge concentration of 5,000 mg.
/ L, and processing of the pulverized kitchen waste that has flowed in is performed. As the sludge concentration increases, the sedimentation of the sludge will inevitably deteriorate, and the quality of the effluent will also deteriorate with this deterioration. The limit value of the sludge concentration when the settling property of the sludge deteriorates is usually in the range of 5,000 to 8,000 mg / L. Therefore, in the first treatment tank 3, 5,000 mg / L is selected and treated for safety. By the way, aerobic microorganisms and facultative anaerobic microorganisms inhabit the sludge in the first treatment tank 3, and the organic pollutants in the crushed garbage absorb, decompose sludge.
Purified by the action of sludge. The aerobic microorganisms include, for example, bacteria belonging to the genus Zooglare, and the facultative anaerobic microorganisms include, for example, bacteria belonging to the genus Bacillus. The first processing tank 3 has a pH sensor 3-2, a DO sensor 3-3, an ORP sensor 3-4,
The MLSS sensor 3-5 is installed, and constantly sends the data to the control unit 8. The blower 10 discharges air from the air diffuser 3-1 via the air pipe 10-1,
The inside of the first processing tank 3 is aerated. Manual valve 10
-2 adjusts the air amount. An inverter 10-5 is connected to the blower 10, and the control unit 8 controls the inverter 10-5 based on data from the pH sensor 3-2, the DO sensor 3-3, and the ORP sensor 3-4,
The amount of aeration is increased / decreased and stopped. Thereby, the sludge in the first treatment tank 3 is always kept in a good state, and the purification treatment is stabilized. The organic pollutants and sludge in the first treatment tank 3 flow into the second treatment tank 4 by overflow through the advection pipe 3-6.

The second treatment tank 4 has substantially the same function as that of the first treatment tank 3 in treating organic pollutants, and performs treatment of untreated organic pollutants in the first treatment tank 3. . The blower 10 discharges air from the air diffuser 4-1 via the air pipe 10-3 to aerate the inside of the second processing tank 4.
The manual valve 10-4 adjusts the air amount. The air pipe 10-3 is connected in parallel with the air pipe 10-1, and air control by the inverter 10-5 is performed in the same manner as in the first processing tank 3. The sludge in the second treatment tank 4 overflows through the advection pipe 4-2 and flows into the sedimentation tank 5.

[0005] The sedimentation tank 5 sediments and separates the sludge flowing from the second treatment tank 4. Sludge is settled and deposited by natural settling, but those that float including gas and the like float as scum and form a layer on the liquid surface. The control unit 8 drives the air lift pump 5-1 by timer control to return the accumulated sludge to the first processing tank 3. Similarly, scum schema 5-
3 is also driven by the control unit 8, and the scum that floats is also the first scum.
It is returned to the processing tank 3. By the way, as described above, in order to keep the sludge concentration in the first processing tank 3 at 5,000 mg / L, the control unit 8 converts the data sent from the MLSS sensor 3-5 installed in the first processing tank 3 into data. By judging, if the sludge concentration in the first treatment tank 3 is 5,000 mg / L or more,
The sludge is transferred to the sludge storage tank 6 as excess sludge by driving the air lift pump 5-2. But this is 5,000
When it is not more than mg / L, the air lift pump 5-2 is not driven. The blower 9 for operating the air lift pump 5-2 includes an air lift pump 5-2, an air lift pump 5-1 and a scum schema 5-3 via air pipes 9-4, 9-7, and 9-10. Supply air to The control unit 8 controls the transfer of air by opening the solenoid valves 9-6, 9-9, and 9-12 at times respectively set by timer control. The manual valves 9-5, 9-8, and 9-11 adjust the amount of supplied air, respectively, and the amount of water transferred by the air lift pumps 5-1 and 5-2 and the scum schema 5-3 is determined by the amount of air. It is determined. The supernatant water separated in the sedimentation tank 5 flows into the discharge tank 7 by overflow through the overflow weir 5-4 and the advection pipe 5-5.

The sludge storage tank 6 stores the excess sludge transferred from the sedimentation tank 5 and 10,000 mg / g by natural settling.
Concentrate to about L. Those that contain gas and the like float and float as scum to form a layer on the liquid surface. Intermediate water between the sediment deposited and the scum that floats up is sent to the first treatment tank 3 by overflowing through the advection pipe 6-1.

The discharge tank 7 temporarily stores the supernatant water flowing from the sedimentation tank 5, and discharges the supernatant water to a discharge destination through a discharge pipe 7-2 by a discharge pump 7-1.

[0008]

However, in the above-mentioned conventional garbage processing apparatus, the input crushed garbage is directly transferred to the first garbage.
Since the wastewater flows into the treatment tank, the load of the first treatment tank greatly fluctuates, especially when kitchen garbage is thrown in at a specific time, such as a dining room or a home kitchen, and the quality of the treated water is not stable. There was a problem.

Further, when the load on the first treatment tank fluctuates and the aeration becomes insufficient, the organic pollutants in the crushed garbage decompose, thereby giving off a bad smell to the surroundings and impairing the surrounding environment. there were.

Therefore, the present invention is to solve the above-mentioned problems, and the quality of the treated water is stable even if the input garbage varies, does not emit a bad smell to the surroundings, and the treatment time is long. An object of the present invention is to provide a garbage disposal device that does not require time.

[0011]

In order to solve the above-mentioned problems, a kitchen waste treatment apparatus according to the present invention temporarily stores crushed kitchen waste sent by a pumping means and 1 to ⁵ m ³ / m ³ per 1 m ^{3 of} tank capacity. a raw water tank for preliminary aeration with an aeration amount of hr;
A treatment tank for purifying the organic pollutants supplied from the raw water tank with high-concentration sludge, a sedimentation tank for sedimenting the treated water supplied from the treatment tank into supernatant water and sludge, and the sedimentation tank And a sludge storage tank for temporarily storing the supernatant water sent from the plant and discharging the supernatant to the outside of the system, and a sludge storage tank for storing the sludge transferred from the sedimentation tank and concentrating it by natural sedimentation.

As a result, the quality of the treated water is stable even if the input garbage varies, and does not emit a bad smell to the surroundings, and the treatment time does not become long.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a crushing means for crushing garbage, a pressure feeding means for pressure-feeding crushed garbage crushed by the crushing means, and a feeding means by the pressure feeding means. a raw water tank to pre aerated with aeration of tank capacity 1 m ³ per 1 to 5 m ³ / hr together with the storing pulverized garbage material Temporary is, the organic pollutant which is supplied from the raw water tank by a high concentration of sludge A treatment tank for purification treatment, a sedimentation tank for separating and separating the treated water supplied from the treatment tank into supernatant water and sludge, and a discharge for temporarily storing and discharging the supernatant water sent from the sedimentation tank to the outside of the system. Tank, and a kitchen waste treatment apparatus characterized by comprising a sludge storage tank for storing the sludge transferred from the sedimentation tank and concentrating by natural sedimentation, the anaerobic environment or overaeration generated by insufficient aeration. Arise Rukingu also without generating prevents spoilage of organic pollutants by a preliminary aeration, the occurrence of offensive odors is suppressed, the quality of treated water can be made good.

The invention according to claim 2 is characterized in that a diffuser pipe is provided in the raw water tank, and fine air bubbles are generated and preliminary aeration is performed. I can do it.

According to a third aspect of the present invention, since the diameter of a large number of holes provided in the air diffuser is 10 to 50 μm, the size of the microbubbles is also about 10 to 50 μm. Oxygen increases, the inside of the tank can be kept in an aerobic environment, the organic pollutants can be prevented from spoiling, and the generation of offensive odors can be suppressed.

The invention according to claim 4 is characterized in that the processing tank is constituted by a plurality of processing tanks, so that the degree of freedom in designing the processing tank is improved.

The fifth aspect of the present invention is characterized in that 100 to 200% of the organic pollutants flowing into the treatment tank are returned to the raw water tank, so that the preliminary processing capacity of the raw water tank is increased. Thus, there is no possibility that untreated crushed garbage will flow into the treatment tank and lower the treatment capacity of the raw water tank.

The invention according to claim 6 is characterized in that 100 to 200% of the organic pollutants flowing into the first treatment tank is returned from the first treatment tank to the raw water tank.
When a plurality of processing tanks are provided, the effect on the subsequent stage can be reduced, and the preliminary processing capacity can be increased.

The invention according to claim 7 is characterized in that 100 to 200% of the organic pollutants flowing into the sedimentation tank is returned from the sedimentation tank to the raw water tank. The capacity can be increased, and the untreated pulverized garbage does not flow out to the treatment tank to reduce the treatment capacity of the raw water tank.

(Embodiment 1) Next, an embodiment of the present invention will be described with reference to FIG. FIG. 1 shows a configuration diagram of a kitchen waste disposal apparatus according to one embodiment of the present invention.

As shown in FIG. 1, kitchen waste generated in a food processing factory, a kitchen such as a canteen, and a kitchen at home is introduced into a kitchen crushing and pumping device 1, and a disposer 1-1 in the kitchen crushing and pumping device 1. Crushed finely. The pulverized garbage is pumped to the raw water tank 2 through the pumping pipe 1-3 by the pumping pump 1-2.

The raw water tank 2 temporarily stores the crushed garbage, and when the storage time elapses a predetermined time, the control unit 8 controls the transfer pump 2-1 by a timer to transfer the stored crushed garbage to the first processing tank 3. To a fixed amount. An air diffuser 2-2 is provided inside the raw water tank 2, and the blower 9 constantly releases air from the air diffuser 2-2 to the inside of the raw water tank 2 through the air pipe 9-1. Pre-aeration inside. The manual valve 9-2 adjusts the amount of air for the aeration. It is appropriate to discharge 1 to ⁵ m ³ / hr of air per 1 m ³ of tank capacity as the amount of preliminary aeration. This aeration amount is 1m ³
If it is less than / hr, the preliminary aeration will be insufficient, the entire inside of the raw water tank 2 will be anaerobic, the anaerobic microorganisms will be dominant, and the crushed garbage will rot. This rot generates a bad smell from the raw water tank 2 due to H ₂ S gas or the like. Conversely, if the amount of aeration is too large and an over-aeration state occurs, bulking will occur. This bulking refers to a state in which filamentous fungi predominantly grow in the sludge, and the sedimentation of the sludge deteriorates significantly. Such over-aeration of the raw water tank 2 also affects the subsequent treatment tank and the like, and the sedimentation and separation of sludge and supernatant water in the sedimentation tank 5 deteriorates, and the quality of the discharged water deteriorates. Originally, preliminary aeration is 1-5 m ³ / h per 1 m ^{3 of} tank capacity.
In the normal state in the range of r, aerobic microorganisms and facultative anaerobic microorganisms inhabit the raw water tank 2, and the organic pollutants in the crushed garbage are reduced by these microorganisms. The part is purified. The aerobic microorganisms include, for example, bacteria belonging to the genus Zooglare, and the facultative anaerobic microorganisms include, for example, bacteria belonging to the genus Bacillus. However, as can be understood from the above description, when the aeration amount is less than 1 m ³ / hr, anaerobic microorganisms become dominant, and when the aeration amount is more than 5 m ³ / hr, filamentous fungi become dominant, and a malodor is generated. And the quality of the water deteriorates.

As described above, since the raw water tank 2 needs preliminary aeration, an air diffuser 2-2 is provided inside. The air diffuser 2-2 is a hollow cylindrical body attached to the end of the air pipe 9-1 and having a large number of holes having a diameter of 10 to 50 μm so as to generate fine bubbles around the air diffuser 2-2. In the present embodiment, this hollow cylindrical body is made of a porous material such as ceramic, and has a large number of holes communicating between the internal space and the outside. When such a hole is formed, the size of the fine bubbles ejected from the hole also becomes about 10 to 50 μm, and the air for the preliminary aeration can be effectively mixed.
Dissolved oxygen can be easily increased, whereby the inside of the tank can be maintained in an aerobic environment, thereby preventing decay of organic pollutants and suppressing generation of offensive odor.

At the same time, in order to increase the activity of microorganisms in the raw water tank 2, sediment sludge and scum are returned from the sedimentation tank 5 described below to the raw water tank 2, and intermediate water is returned from the sludge storage tank 6 described below. ing. By this return, many microorganisms are sent from the sedimentation tank 5 and the sludge storage tank 6 to the raw water tank 2.
The crushed garbage is mixed with the returned sludge, the returned scum, the returned intermediate water, and the pre-aerated air, and the purification treatment by sludge adsorption achieves rot prevention and concentration adjustment. The amount returned from the sedimentation tank 5 is 100 to 200% of the organic pollutants flowing into the sedimentation tank 5.

As can be seen from the above, the raw water tank 2 does not have a main purpose of purifying the water unlike the first processing tank. That is, the first processing tank 3 of the prior art shown in FIG. 2 is intended for purification processing, but cannot perform stable purification processing when the load fluctuates. The sedimentation and separation of sludge and supernatant water deteriorate due to the effect of load fluctuation, and the quality of the discharged water deteriorates. However, in the first embodiment, the crushed garbage is temporarily stored in the raw water tank 2 to prevent the load fluctuation from being transmitted to the subsequent tank, and a fixed amount is supplied to the first processing tank 3 to perform the purification processing. It will stabilize. Then, simply storing the crushed garbage starts to rot inside. In the first embodiment, preliminary aeration is performed to suppress the generation of offensive odor,
It prevents bulking and stabilizes the quality of the effluent by preventing the effects on tanks below the first treatment tank, and also absorbs fluctuations in load to purify some of the crushed garbage.

Next, the first processing tank 3 will be described. In the first embodiment, since a fixed amount of crushed garbage is sent from the raw water tank 2 to the first treatment tank 3, stable purification processing is possible. Therefore, if the state in the first treatment tank 3 is controlled so that the purification process is most efficient, the optimal purification and the quality of the discharged water can be stabilized. When the load of the treatment is increased by purifying only the first treatment tank 3, the second treatment tank 4 is provided as in the first embodiment, and the first treatment tank 3 and the second
The purification may be optimized by sharing with the processing tank 4. Further, in some cases, it is preferable to perform optimization by increasing the number of processing tanks. By the way, when the sludge concentration exceeds 5,000 mg / L, as described above, the sedimentation of the sludge starts to deteriorate, but in this vicinity, the purification efficiency increases. Therefore, in the first embodiment, the MLSS sensor 3-5 keeps the sludge concentration in the first treatment tank 3 at 5,000 mg / L, and treats the incoming crushed kitchen waste. Aerobic microorganisms and facultative anaerobic microorganisms inhabit the sludge in the first treatment tank 3, and organic pollutants in the crushed garbage are purified by the action of adsorption, decomposition, and sludge formation of the sludge. You. As described above, this aerobic microorganism group is, for example, a bacterium belonging to the genus Zooglare,
The facultative anaerobic microorganism group is, for example, a bacterium belonging to the genus Bacillus. PH sensor 3-2, D
An O sensor 3-3, an ORP sensor 3-4, and an MLSS sensor 3-5 are installed and their data are constantly sent to the control unit 8. The DO sensor 3-3 detects the concentration of dissolved oxygen in the first processing tank 3, and the control unit 8 controls the blower 10 based on the detected concentration, so that the dissolved oxygen becomes 2.0 mg / L.
It is controlled to fall within the range of 8.0 mg / L. This is because if the amount of dissolved oxygen is too low, a bad smell due to H ₂ S gas or the like is generated, as described in the raw water tank 2, and if the amount of dissolved oxygen is too high, bulking occurs. Is caused. The blower 10 blows air from the air diffuser 3-1 through the air pipe 10-1.
It is discharged into the processing tank 3 to aerate the inside of the first processing tank 3. This can increase or decrease the concentration of dissolved oxygen. Further, the pH sensor 3 holds the inside of the first processing tank 3 at a pH value of 6 or more in order to improve the purification speed. The ORP sensor 3-4 detects the oxygen reduction potential of the wastewater in the tank, and has an ORP value of -10.
If it is 0 mV or more, no odor is generated. The control unit 8 controls the blower 10 and other devices based on these data.

The manual valve 10-2 is for adjusting the amount of air. The blower 10 has an inverter 10
-5 is connected, and the control unit 8 controls the pH sensor 3-
2. The inverter 10-5 is controlled by judging data from the DO sensor 3-3 and the ORP sensor 3-4. The inverter 10-5 controls the number of rotations of the blower 10 to increase, decrease, or stop the aeration amount. Thereby, the sludge in the first treatment tank 3 is always kept in a good state, and the purification treatment can be stabilized. Sludge in the first treatment tank 3 is transferred to the advection pipe 3
It flows into the 2nd processing tank 4 by overflow through -6.
Since the amount of crushed garbage sent to the first treatment tank 3 is quantitative,
The amount of overflow is basically a fixed amount, and the load on the second processing tank 4 is hardly fluctuated.

The second treatment tank 4 performs almost the same function as the first treatment tank 3 in treating organic pollutants.
In the treatment tank 3, the untreated organic pollutants are treated. The detailed description of the state of the microorganisms inside and the purification conditions is omitted from the description of the first treatment tank 3 described above. Blower 10
Releases air from the air diffuser 4-1 via the air pipe 10-3 to aerate the inside of the second processing tank 4. Manual valve 10-
Numeral 4 is for adjusting the amount of air. Air piping 1
0-3 is connected in parallel with the air pipe 10-1, and air control by the inverter 10-5 is performed in the same manner as in the first processing tank 3. The sludge in the second treatment tank 4 flows into the sedimentation tank 5 by overflow through the advection pipe 4-2.

The sedimentation tank 5 sediments and separates the sludge flowing from the second treatment tank 4. Sludge is settled by natural settling,
Those that include gas and the like float and float as scum to form a layer on the liquid surface. The air lift pump 5-1 timer-controlled by the control unit 8 returns the accumulated sludge to the raw water tank 2, and similarly, the timer-controlled scum schema 5-3 transfers the scum that floats to the raw water tank 2. The crushed garbage in the raw water tank 2 is mixed with the returned sludge, the returned scum, the returned intermediate water, and the pre-aerated air, and purification is achieved by sludge adsorption to prevent decay and adjust the concentration. 100 to 200% of the organic pollutants flowing into the settling tank 5
When the raw water is returned to the raw water tank 2, the number of microorganisms can be increased from the microorganisms that have flowed out, and the preliminary processing capacity of the raw water tank 2 can be increased.

Then, the control unit 8 determines the data of the MLSS sensor 3-5 installed in the first processing tank 3, and
If the MLSS concentration in the treatment tank 3 is 5,000 mg / L or more, the air lift pump 5-2 is driven to transfer sludge to the sludge storage tank 6 as surplus sludge, and 5,000 mg.
If it is less than / L, the air lift pump 5-3 is not driven. As described above, since the amount of sludge in the settling tank 5 is reduced,
Even if the sludge is transferred from the treatment tank 3 to the sedimentation tank 5 via the second treatment tank 4, the MLSS concentration in the sedimentation tank 5 does not increase and the quality of the discharged water does not deteriorate. The blower 9 is connected to the air lift pumps 5-1 and 5-2 and the scum schema 5 via air pipes 9-4, 9-7 and 9-10, respectively.
-3 is supplied with air. The control unit 8 includes solenoid valves 9-6, 9-
9, 9-12 are opened at the respectively set times to control the transfer of air. Manual valves 9-5, 9-8, 9-
Numeral 11 adjusts the amount of air to be supplied via each, and the amount of water transferred to the air lift pumps 5-1 and 5-2 and the scum schema 5-3 is determined by this amount of air. Air lift pumps 5-1 and 5-2, scum schema 5
In order to prevent the flow rate fluctuation of -3, the control unit 8 controls the solenoid valve 9
-6, 9-9 and 9-12 when opening the solenoid valve 9-3
Close. The supernatant water separated in the sedimentation tank 5 is supplied to the overflow weir 5
-4, and flows into the discharge tank 7 by overflow through the advection pipe 5-5.

The sludge storage tank 6 stores the excess sludge transferred from the sedimentation tank 5 and 10,000 mg / L by natural settling.
A substance that is concentrated to a certain extent and that floats including gas and the like floats as scum. Intermediate water between the sediment deposited and the scum that floats flows into the raw water tank 2 by overflow through the advection pipe 6-1.

The discharge tank 7 temporarily stores the supernatant water flowing from the sedimentation tank 5, and discharges the supernatant water to the discharge destination through the discharge pipe 7-2 by the discharge pump 7-1.

As can be understood from the above description, in the first embodiment, the preliminary aeration of the raw water tank causes the occurrence of the anaerobic environment caused by insufficient aeration and the bubbling caused by the overaeration. Therefore, it is possible to prevent decay of organic pollutants, suppress generation of offensive odor, and improve the quality of treated water. Also, the processing time does not become long. Then, using the diffuser 2-2, 10
Since fine bubbles with a size of ~ 50 µm are generated, the concentration of dissolved oxygen in the sewage can be increased, the tank can be maintained in an aerobic environment, the organic pollutants can be prevented from spoiling, and the generation of offensive odors can be prevented. Can be suppressed. Further, 100 to 200% of the organic pollutants flowing into the sedimentation tank 5 are removed from the sedimentation tank 5 to the raw water tank 2.
Therefore, the preliminary processing capacity of the raw water tank 2 can be increased.

(Embodiment 2) In Embodiment 1, 100 to 20 of the organic pollutants flowing into the settling tank 5
Although 0% is returned to the raw water tank 2, 100% to 200% of the organic pollutants are returned to the raw water tank 2 from the first processing tank 3 in the second embodiment. The other configuration is the same as that of the first embodiment, and a detailed description thereof will be omitted.

In the second embodiment, a pipe for returning sludge from the first treatment tank 3 to the raw water tank 2 is provided except for a pipe for returning sludge from the sedimentation tank 5 to the raw water tank 2 in the first embodiment. I have. Through this pipe, 100 to 200% of the organic pollutants are returned by an air lift pump. In addition, as in the first embodiment, excess sludge is sent from the sedimentation tank 5 to the sludge storage tank 6, and sludge and intermediate water are returned from the sludge storage tank 6 to the raw water tank 2. Thus, in the second embodiment,
Since 100% or more of the organic pollutants sent from the raw water tank 2 to the first processing tank 3 are returned to the raw water tank 2, the preliminary processing capacity in the raw water tank 2 can be increased, and is 200% or less. Therefore, when the amount returned to the raw water tank 2 increases, there is no possibility that the newly crushed kitchen waste flows out to the first processing tank 3 without being processed and lowers the overall processing capacity.

[0036]

As can be understood from the above description, according to the present invention, since the raw water tank is provided and pre-aeration is performed, an anaerobic condition caused by insufficient aeration and a bulking caused by excessive aeration occur. Therefore, decay of the organic pollutant can be prevented, the generation of offensive odor can be suppressed, and the quality of the treated water can be improved. In addition, this eliminates the need for deodorizing and deodorizing equipment, greatly reducing the initial cost of the processing equipment, and stabilizing the quality of the treated water, thereby making it possible to greatly reduce running costs such as maintenance costs. And the processing time does not become long. 10 to 50μ using a diffuser
m, so increase the amount of dissolved oxygen,
The inside of the tank can be maintained in an aerobic environment, and decay of organic pollutants can be prevented. Furthermore, since 100 to 200% of the organic pollutants flowing into the sedimentation tank and the first treatment tank are returned from the sedimentation tank to the raw water tank, the preliminary processing capacity of the raw water tank is increased, and untreated crushed garbage is removed. It does not flow out to the processing tank and reduce the processing capacity as a whole.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a kitchen waste disposal apparatus according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a conventional kitchen waste processing apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Garbage crushing and pumping apparatus 1-1 Disposer 1-2 Pump for pumping 1-3 Pumping piping 2 Raw water tank 2-1 Transfer pump 2-2 Diffusion pipe 2-3 Transfer pipe 3 First processing tank 3-1 Diffusion pipe 3-2 pH sensor 3-3 DO sensor 3-4 ORP sensor 3-5 MLSS sensor 3-6,4-2,5-5,6-1 Advection pipe 4 Second treatment tank 4-1 Aeration pipe 5 Sedimentation tank 5-1 , 5-2 Air lift pump 5-3 Scum schema 5-4 Overflow weir 6 Sludge storage tank 7 Discharge tank 7-1 Discharge pump 7-2 Discharge pipe 8 Control unit 9,10 Blower 9-1,9-4, 9-7, 9-10 Air piping 9-2, 9-5, 9-8, 9-11, 10-2, 10-
4 Manual valve 9-3, 9-6, 9-9, 9-12 Solenoid valve 10-1, 10-3 Air piping 10-5 Inverter

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Minami Yasunaga 1006 Kazuma Kadoma, Osaka Pref.Matsushita Electric Industrial Co., Ltd.

Claims (7)

[Claims] 1. A crushing means for crushing garbage, a pumping means for pressure-feeding crushed garbage crushed by the crushing means, and a tank capacity of 1 m for temporarily storing the crushed garbage sent by the pressure-feeding means. a raw water tank to pre aerated with aeration amount of ³ per 1 to 5 m ³ / hr, a process tank for purification treatment of organic pollutants which are dispensed from the raw water tank by a high concentration of sludge is supplied from the processing bath A sedimentation tank that sediments the treated water into supernatant water and sludge, a discharge tank that temporarily stores the supernatant water sent from the sedimentation tank and discharges it outside the system, and the sludge transferred from the sedimentation tank. A kitchen waste disposal apparatus comprising a sludge storage tank for storing and concentrating by natural sedimentation. 2. The raw water tank is provided with a diffuser tube, which generates fine air bubbles to perform preliminary aeration.
A garbage disposal device according to the above. 3. A large number of holes provided in an air diffuser have a diameter of 10
3. The garbage disposal device according to claim 2, wherein the size of the garbage disposal device is from 50 to 50 [mu] m. 4. The garbage disposal apparatus according to claim 1, wherein the treatment tank comprises a plurality of treatment tanks. 5. An organic pollutant flowing into the treatment tank,
The kitchen waste disposal apparatus according to any one of claims 1 to 3, wherein ~ 200% is returned to the raw water tank. 6. The garbage disposal according to claim 4, wherein 100 to 200% of the organic pollutants flowing into the first treatment tank are returned from the first treatment tank to the raw water tank. apparatus. 7. An organic pollutant flowing into a sedimentation tank.
2. The garbage disposal apparatus according to claim 1, wherein -200% is returned from the sedimentation tank to the raw water tank.