JP2001205283A - Garbage treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such as problem that the water sprinkling filter bed part of a wastewater treatment apparatus is clogged by the accumulation of sludge and the treatment efficiency of the apparatus is lowered and the treatment life thereof is also shortened. SOLUTION: A garbage treatment apparatus is equipped with a flow rate adjusting device for temporary storing a garbage crushing liquid, a solid-liquid separation device for separating the crushing liquid into a solid component and a liquid component, a composting device for changing the solid component into compost and a wastewater treatment apparatus for microbially treating organic matter in the liquid component. The wastewater treatment apparatus is constituted of a fluidized bed part, a water sprinkling filter bed part and a sedimentation separation tank and, by circulating a microorganism carrier between the water sprinkling filter bed part and the fluidized bed part, the clogging of the water sprinkling filter bed part caused by accumulated sludge is suppressed to keep the high treatment efficiency of organic wastewater in the wastewater treatment apparatus over a long period of time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of introducing garbage crushed with water using a disposer, separating the garbage into a solid component and a liquid component, and decomposing organic substances contained in each component by a microorganism. The present invention relates to a garbage disposal apparatus for obtaining water quality that can be discharged into a compost while solids can be discharged into a sewer.

[0002]

2. Description of the Related Art In recent years, methods for treating organic wastewater using aerobic microorganisms have been actively researched and developed. For example, in a sewage treatment plant or the like, an activated sludge method is usually adopted, and in a combined type septic tank, an activated sludge method or a submerged filter method is adopted.

As for garbage discharged from homes and the like, research and development has been conducted to treat garbage crushed by a disposer as garbage-containing wastewater.

For example, Japanese Patent Application Laid-Open No. 9-1117 discloses that
The garbage-containing wastewater flows into the solids treatment section, where the solids are decomposed by microorganisms, and then the primary treated water discharged from the solids treatment device is introduced into the wastewater treatment tank where it is aerated. Discloses decomposing and removing solids from garbage-containing wastewater pulverized by a disposer and purifying the wastewater.

[0005] In the apparatus disclosed in this publication, wastewater is aerated by a diffuser in a wastewater treatment tank.
Basically, the same treatment as the activated sludge method is performed.

[0006] On the other hand, the present inventors have used a wastewater treatment device (secondary treatment device) provided with a packed bed in which a microorganism carrier is filled at the subsequent stage of a solid matter treatment device (primary treatment device). It has been found that the purification of wastewater can be carried out well (Japanese Patent Laid-Open No. 11-19674).

[0007]

Here, the introduction of the liquid into the wastewater treatment apparatus in the conventional garbage disposal apparatus is performed by temporarily storing the liquid separated by the solid-liquid separator to separate the suspended fine particles. Then, the supernatant was introduced into a microorganism carrier-filled wastewater treatment apparatus of a sprinkling filter type. However, this sedimentation alone is not sufficient. In addition to introducing some of the suspended particles into the wastewater treatment device, the particles also aggregate during the transfer of the supernatant, and the aggregated particles accumulate in the wastewater treatment device. As a result, the treatment capacity is reduced, and there is a need to remove accumulated substances and replace the microorganism carrier.

The present invention has been made in view of the above-mentioned problems, and has a wastewater treatment device comprising a sprinkling filter bed, a fluidized bed, and a sedimentation separation tank. Garbage treatment that circulates between the floor and the sprinkling filter to remove suspended particulates that have accumulated on the floor by self-cleaning, suppresses blockage of the sprinkling filter, and enables high-efficiency drainage to continue for a long time The purpose is to provide a machine.

[0009]

According to a first aspect of the present invention, there is provided a garbage disposal apparatus, comprising: a flow rate adjusting tank for temporarily storing a garbage crushed liquid obtained by crushing garbage discharged from a kitchen together with water; A solid-liquid separator for separating the crushed liquid into a solid component and a liquid component supplied from a tank, a compost device for composting the solid component separated by the solid-liquid separator, And a wastewater treatment device for treating the liquid supplied from the liquid separation device with microorganisms to obtain treated water.

According to a second aspect of the present invention, in the garbage disposal apparatus according to the first aspect, the composting apparatus is characterized in that a microorganism carrier is filled in a tank, and the solid component is composted by microorganisms. And

The invention according to claim 3 is the invention according to claim 1 or 2
In the garbage disposal device according to the above, the wastewater treatment device,
It is characterized by comprising a sprinkling filter bed, a fluidized bed, and a sedimentation separation tank.

According to a fourth aspect of the present invention, in the apparatus according to any one of the first to third aspects, the wastewater treatment apparatus includes a sprinkling filter section and a fluidized bed section, and a fluidized bed section and a sedimentation separation tank. Are connected to each other.

According to a fifth aspect of the present invention, in the apparatus according to the fourth aspect, the lower part of the water trickling filter part and the upper part of the fluidized bed part communicate with each other through a communication port.

The invention according to claim 6 is the invention according to claim 4 or 5.
In the apparatus according to any one of the above, the upper part of the fluidized bed and the upper part of the sedimentation / separation tank communicate with each other, and the liquid component overflows from the fluidized bed to the sedimentation / separation tank. Features.

According to a seventh aspect of the present invention, in the garbage disposal apparatus according to any one of the third to sixth aspects, the wastewater treatment apparatus includes a sprinkling filter section and a fluidized bed section.
The organic component in the liquid component is treated with a microorganism to oxidatively decompose.

According to an eighth aspect of the present invention, in the garbage disposal apparatus according to any one of the third to seventh aspects, in the wastewater treatment apparatus, the microorganism carrier is filled in the water trickling filter section. The microorganism carrier circulates through the sprinkling filter section and the fluidized bed section through the communication port.

According to a ninth aspect of the present invention, in the garbage disposal apparatus according to any one of the fourth to eighth aspects, the microorganism carrier filled in a sprinkling filter section of the wastewater treatment apparatus is connected to the communication port. The speed of moving to the fluidized bed through the fluidized bed and the speed of pumping from the fluidized bed to the sprinkling filter are almost equal, and the thickness of the layer of the microorganism carrier filled in the sprinkling filter is It is characterized by being kept substantially constant.

According to a tenth aspect of the present invention, in the garbage disposal apparatus according to any one of the third to ninth aspects, the particle size of the microorganism carrier packed on the bottom surface of the water trickling filter portion is smaller than the particle size of the microorganism carrier. A hole with a small diameter is formed, and only the treated water is passed and drained.

The invention according to claim 11 is the invention according to claims 3 to 10.
In the garbage disposal apparatus according to any one of the above, the microorganism carrier filled in the sprinkling filter section and the fluidized bed section is porous and has a high ability to carry microorganisms.

The invention according to claim 12 is the invention according to claims 3 to 11
In the garbage processing apparatus according to any one of the above, the specific gravity of the microorganism carrier is smaller than water, and / or
It is characterized by being a carrier having closed cells.

[0021]

An embodiment according to the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a configuration of a garbage processing system 1 according to the present embodiment. Garbage disposal system 1
, The garbage discarded in the sink is crushed by the disposer together with the water, and the garbage crushed liquid and kitchen wastewater are introduced and temporarily stored, and the flow control tank 2, the crushed garbage and the wastewater A solid-liquid separator 3 for separating the mixture into a solid component and a liquid component, a wastewater treatment device 4 for biologically removing organic matter in the liquid component separated by the solid-liquid separator 3,
It has a solid material processing device (composting device) 5 for performing composting of solids.

The crushed garbage-containing wastewater temporarily stored in the flow control tank 2 is pumped to the solid-liquid separator 3 at regular time intervals. The time interval of this pumping is determined by the processing capacity of the waste water treatment device 4 at the subsequent stage.

In the solid-liquid separator 3, the crushed garbage-containing wastewater pumped up is separated into solid components such as crushed garbage and sludge and liquid components of organic wastewater. The separated solids are sent to the composting device 5 and composted. On the other hand, the liquid component is introduced into the wastewater treatment device 4 and discharged into the sewage after removing the organic matter in the liquid component by microbial treatment.

Next, FIG. 2 is a schematic view showing the configuration of the wastewater treatment apparatus 4. As shown in FIG.

The wastewater treatment apparatus 4 comprises a fluidized bed section 10, a sprinkling filter bed section 11, and a sedimentation separation tank 12.

The organic wastewater, which is a liquid component separated by the solid-liquid separation device 3, is introduced into the fluidized bed 10 of the wastewater treatment device 4, and has a specific gravity smaller than that of water and / or a microorganism carrier having closed cells. The organic matter in the liquid component is decomposed by the microorganisms carried on 13.

A part of the liquid in the fluidized bed 10 is pumped together with the microbial carrier 13 from near the water surface, and the water is filtered from the sprinkling filter 1.
Introduced in 1. The flow of the liquid and the carrier is shown by arrow 14 in the figure.

The liquid introduced into the sprinkling filter section 11 is treated with microorganisms by contacting the microorganism carrier 13 filled in the sprinkling filter section 11, and a hole formed in the bottom of the sprinkling filter section 11. It is discharged from 15 as treated water 16. on the other hand,
The microorganism carrier 13 introduced into the trickling filter part 11 is filled on the microorganism carrier 13 filled in the trickling filter part 11. At this time, the bottom of the trickling filter part 11 is inclined toward the fluidized bed part 10, so that the microorganism carrier 13 filled in the trickling filter bed part 11 is provided below the trickling filter bed part 11. It is extruded to the fluidized bed section 10 through the communication port 17. Therefore, the microorganism carrier 13 always circulates between the fluidized bed 10 and the trickling filter bed 11.

At the communication port 17, a roller 30 as shown in FIG.
May be provided.

As another form, a motor 31 and a belt 32 as shown in FIG. 4 may be provided, and the driving force of the motor 31 may be moved through the connecting belt 33 and the pulley 34.

Further, as shown in FIG.
By installing a bypass 35 connecting the communication port 17 with the communication port 17, a water flow is generated from the communication port 17 toward the fluidized bed 10 by passing the pump 35 through the bypass 35, and the microorganism carrier 13 is moved by the water pressure. Good.

Further, as shown in FIG. 6, a microorganism carrier circulating pipe 37 may be provided, and the microorganism carrier 13 which is freely moved therein may be forcibly circulated by a submersible pump 38. In this case, by opening small holes 39, 39,... In the microorganism carrier circulation pipe 37, the liquid component in the fluidized bed 10 can be pumped together with the microorganism carrier 13 to the sprinkling filter bed 11.

The upper part of the fluidized bed 10 and the sedimentation / separation tank 12 communicate with each other. The liquid component in the fluidized bed part 10 overflows and flows into the sedimentation / separation tank 12, and the suspended fine particles in the liquid part are kept stationary. To form a precipitation layer 18. The sediment layer 18 of the fine particles that has settled and accumulated is transported to the composting apparatus 5 as returned sludge 19 and is subjected to a composting process.

The water level 20 of the liquid in the fluidized bed 10 is lower than the lowermost hole 15 formed in the bottom of the sprinkling filter 11 and higher than the partition from the sedimentation / separation tank 12. This enables the above-described operation.

As a result, the sludge that had accumulated on the upper surface only in the conventional trickling filter system was changed to the microorganism carrier 13 in the present invention.
Therefore, clogging of the sprinkling filter section 11 due to accumulated sludge is eliminated, and maintenance for sludge removal is reduced. At the same time, it is possible to operate at a high processing capacity for a long time.

Here, FIG. 7 shows an embodiment in which the water treated in the sprinkling filter floor 11 is further treated.

When the water treatment capacity is low only with the sprinkling filter bed section 11, the sprinkling filter bed section 11 is used only for the purpose of draining the microorganism carrier 13 and removing the accumulated sludge. May be independently provided.

[0039]

According to the present invention, as described above, the wastewater treatment apparatus comprises a fluidized bed, a sprinkling filter, and a sedimentation separation tank.
By circulating the microbial carrier between the sprinkling filter bed and the fluidized bed, the clogging of the sprinkling filter bed with accumulated sludge is suppressed,
Efficient treatment of organic wastewater in wastewater treatment equipment has become possible over a long period of time.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a garbage processing apparatus according to an embodiment of the present invention as viewed from the front.

FIG. 2 is a schematic diagram of the wastewater treatment device as viewed from the front.

FIG. 3 is a schematic view from the front showing another embodiment of the communication port.

FIG. 4 is a schematic view from the front showing another embodiment of the communication port.

FIG. 5 is a schematic view from the front showing another embodiment of the communication port.

FIG. 6 is a schematic view from the front showing another embodiment of the communication port.

FIG. 7 is a schematic view from the front showing another embodiment of the wastewater treatment device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Garbage disposal apparatus 2 ... Flow control tank 3 ... Solid-liquid separation apparatus 4 ... Wastewater treatment apparatus 5 ... Compost apparatus 10 ... Fluidized bed part 11 ... Sprinkling filter bed part 12 ... Sedimentation separation tank 13 ... Microorganism carrier 14 ... Liquid content Flow of water and microorganism carrier 15 Drainage hole at bottom of sprinkler filter 16 Treatment water 17 Communication port connecting sprinkler filter and fluidized bed 18 Sediment layer of suspended particulates 19 Return sludge 20 Liquid level 21 ... wastewater treatment tank 30 ... roller 31 ... motor 32 ... belt 33 ... connecting belt 34 ... pulley 35 ... bypass 36 ... pump 37 ... microorganism carrier circulation pipe 38 ... submersible pump 39 ... small hole

Claims (12)

[Claims] 1. A flow control tank for temporarily storing a garbage crushed liquid obtained by crushing garbage discharged from a kitchen together with water, and a solid content and a liquid content of the crushed liquid supplied from the flow control tank. A solid-liquid separator for separating the solid-liquid separator, a compost device for composting the solid component separated by the solid-liquid separator, and a microorganism component for treating the liquid component supplied from the solid-liquid separator. A garbage disposal device, comprising: a wastewater treatment device for obtaining water. 2. The garbage disposal apparatus according to claim 1, wherein the composting apparatus has a tank filled with a microorganism carrier, and the solids are composted by microorganisms. 3. The wastewater treatment device according to claim 1, further comprising: a sprinkling filter floor;
3. The garbage disposal apparatus according to claim 1, further comprising a fluidized bed and a sedimentation separation tank. 4. The apparatus according to any one of claims 1 to 3, wherein the wastewater treatment apparatus includes a sprinkling filter section and a fluidized bed section, and a fluidized bed section and a sedimentation separation tank, respectively. A garbage disposal device characterized by the following. 5. The garbage disposal apparatus according to claim 4, wherein a lower part of the trickling filter part and an upper part of the fluidized bed part communicate with each other through a communication port. 6. The apparatus according to claim 4, wherein an upper portion of the fluidized bed portion and an upper portion of the sedimentation separation tank communicate with each other, and the liquid component is discharged from the fluidized bed portion. A garbage disposal apparatus characterized by overflowing into the sedimentation separation tank. 7. The wastewater treatment device according to claim 3, wherein the sprinkling filter section and the fluidized bed section treat the organic component in the liquid component with microorganisms to oxidatively decompose the organic component.
6. The garbage disposal apparatus according to any one of 6. 8. The wastewater treatment device, wherein the microbial carrier is filled in the sprinkling filter section, and the microbial carrier circulates through the sprinkling filter section and the fluidized bed section through the communication port. The method according to claim 3, wherein
A garbage disposal device according to any one of the above. 9. The microorganism carrier filled in the sprinkling filter section of the wastewater treatment device moves at a rate of moving to the fluidized bed section through the communication port, and moves from the fluidized bed section to the sprinkling filter section. 9. The method according to claim 4, wherein the speed of pumping is substantially equal, and the thickness of the microbial carrier layer filled in the trickling filter bed is kept substantially constant. Waste treatment equipment. 10. The bottom surface of the water trickling filter unit is provided with a hole having a diameter smaller than the particle diameter of the microorganism carrier packed therein, and only treated water is allowed to pass therethrough for drainage. A garbage disposal apparatus according to any one of 3 to 9. 11. The method according to claim 3, wherein the microorganism carrier filled in the sprinkling filter bed and the fluidized bed is porous and has a high ability to carry microorganisms. A garbage disposal apparatus according to item 1. 12. The garbage disposal apparatus according to claim 3, wherein the microorganism carrier has a specific gravity lower than that of water and / or is a carrier having closed cells. .