JP3877482B2 - Garbage disposal equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention introduces raw garbage pulverized with water using a disposer, separates it into a solid content and a liquid content, decomposes the organic matter contained in each by microorganisms, and converts the solid content into compost, The minute relates to a garbage disposal device for obtaining water quality that can be discharged into the sewer.
[0002]
[Prior art]
In recent years, methods for treating organic wastewater using aerobic microorganisms have been actively researched and developed. For example, the activated sludge method is usually employed in sewage treatment plants and the like, and the activated sludge method and the submerged bed method are employed in merged septic tanks.
[0003]
In addition, with regard to garbage discharged from households, etc., research and development has been conducted to treat garbage crushed by a disposer as wastewater containing garbage.
[0004]
For example, in Japanese Patent Laid-Open No. 9-1117, wastewater containing wastewater flows into a solids treatment unit, where the solids are decomposed by microorganisms, and then the primary treated water discharged from the solids treatment device is drained. It is disclosed that by introducing into a treatment tank and performing aeration treatment here, the solid waste is decomposed and removed from the wastewater containing waste ground by a disposer and the wastewater is purified.
[0005]
In the apparatus disclosed in this publication, wastewater is aerated by a diffuser in a wastewater treatment tank, and basically the same treatment as in the activated sludge method is performed.
[0006]
On the other hand, the inventors of the present application use a wastewater treatment device (secondary treatment device) including a packed bed in which a microbial carrier is filled in a subsequent stage of the solid matter treatment device (primary treatment device), thereby It has been found that the purification can be carried out satisfactorily (Japanese Patent Laid-Open No. 11-19664).
[0007]
[Problems to be solved by the invention]
Here, the introduction of the liquid component into the wastewater treatment device in the conventional garbage treatment device is performed by temporarily storing the liquid component separated by the solid-liquid separation device to precipitate and separate the suspended fine particles, and the supernatant liquid is sprinkled through the watering filter bed. It was introduced into the wastewater treatment equipment filled with microorganism carrier. However, this precipitation separation is not sufficient, and in addition to a part of the suspended fine particles being introduced into the wastewater treatment device, the fine particles are aggregated during the transfer of the supernatant liquid, and the aggregated fine particles accumulate in the wastewater treatment device. Occlusion causes a reduction in processing capacity, and it is necessary to remove accumulated substances and replace microbial carriers.
[0008]
This invention is made in view of the said subject, Comprising: A waste-water-treatment apparatus is comprised from a trickling filter part, a fluidized bed part, and a sedimentation separation tank, The microorganisms carrier with which the trickling filter part was filled is made into a fluidized bed part. Circulates between the two, providing a garbage treatment machine that eliminates suspended particulates accumulated in the sprinkling filter bed by self-cleaning, suppresses blockage of the sprinkling filter bed, and allows high-efficiency treatment of drainage to continue for a long period of time. The purpose is to do.
[0009]
[Means for Solving the Problems]
The garbage processing apparatus according to claim 1 includes a flow rate adjusting tank for temporarily storing garbage crushed liquid obtained by pulverizing food waste together with water,
A solid-liquid separator for separating the crushed liquid supplied from the flow rate adjusting tank into a solid component and a liquid component;
A composting device for composting the solids separated by the solid-liquid separation device;
A wastewater treatment apparatus for obtaining treated water by microbial treatment of the liquid component supplied from the solid-liquid separator having a sprinkling filter bed and a fluidized bed ;
In a garbage disposal apparatus comprising:
The sprinkling filter bed is filled with a microbial carrier, and has a communication port between the sprinkling filter bed and the fluidized bed, and the microbial carrier circulates and moves through the communication port. To do.
[0010]
The invention according to claim 2 is characterized in that, in the apparatus according to claim 1, the bottom surface of the sprinkling filter bed has a hole, and the treated water is allowed to pass through to drain.
[0011]
The invention according to claim 3 is the apparatus according to claim 1 or 2, wherein the microbial carrier is a carrier having a specific gravity smaller than that of water and / or having closed cells. And
[0012]
According to a fourth aspect of the present invention, in the apparatus according to any one of the first to third aspects, the lower part of the sprinkling filter bed part and the upper part of the fluidized bed part communicate with each other through the communication port. Features.
[0013]
The invention according to claim 5 is the apparatus according to any one of claims 1 to 4, further comprising a precipitation separation tank, wherein the upper part of the fluidized bed portion and the upper part of the precipitation separation tank are communicated with each other. The liquid component overflows from the fluidized bed to the precipitation separation tank.
[0014]
The invention according to claim 6 is the apparatus according to any one of claims 1 to 5, wherein the composting apparatus is filled with the microorganism carrier in a tank and composts the solid content with microorganisms. It is characterized by that.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments according to the present invention will be described with reference to the drawings.
[0022]
FIG. 1 is a diagram showing a configuration of a garbage disposal system 1 according to the present embodiment. The garbage disposal system 1 is a flow rate adjustment tank 2 in which garbage disposed of in a sink is pulverized by a disposer together with water, and the garbage crushing liquid and kitchen drainage are introduced and temporarily stored. Solid-liquid separation device 3 that separates the mixture of garbage and wastewater into a solid component and a liquid component, a wastewater treatment device 4 that biologically removes organic substances in the liquid component separated by the solid-liquid separation device 3, and a solid component It has a solid matter processing device (composting device) 5 for performing composting treatment for a minute.
[0023]
The wastewater containing crushed garbage temporarily stored in the flow rate adjusting tank 2 is pumped up to the solid-liquid separator 3 at regular time intervals. This pumping time interval is determined by the processing capacity of the waste water treatment device 4 at the subsequent stage.
[0024]
In the solid-liquid separator 3, the crushed garbage-containing wastewater pumped up is separated into a solid content such as crushed garbage and sludge and a liquid content of organic wastewater. The separated solid is sent to the composting device 5 and composted. On the other hand, the liquid component is introduced into the waste water treatment device 4 and the organic matter in the liquid component is removed by microbial treatment and then discharged into sewage.
[0025]
Next, FIG. 2 is a schematic diagram for illustrating the configuration of the waste water treatment apparatus 4.
[0026]
The waste water treatment device 4 includes a fluidized bed portion 10, a sprinkling filter bed portion 11, and a precipitation separation tank 12.
[0027]
The organic wastewater, which is the liquid component separated by the solid-liquid separation device 3, is introduced into the fluidized bed 10 of the wastewater treatment device 4, and is carried on the microorganism carrier 13 having a specific gravity smaller than that of water and / or having closed cells. The organic matter in the liquid is decomposed by the microorganisms.
[0028]
A part of the liquid in the fluidized bed 10 is pumped together with the microorganism carrier 13 from near the water surface and introduced into the sprinkling filter bed 11. The flow of the liquid and the carrier is indicated by an arrow 14 in the figure.
[0029]
The liquid component introduced into the sprinkling filter bed 11 is subjected to microbial treatment by contacting the microbial carrier 13 filled in the sprinkling filter bed 11 and processed from the holes 15 formed in the bottom surface of the sprinkling filter bed 11. It is discharged as water 16. On the other hand, the microbial carrier 13 introduced into the trickling filter bed 11 is filled on the microbial carrier 13 filled in the trickling filter bed 11. At this time, since the bottom surface of the water trickling filter part 11 is inclined toward the fluidized bed part 10, the microorganism carrier 13 filled in the water trickling filter part 11 is provided below the water trickling filter part 11. It is pushed out to the fluidized bed 10 through the communication port 17. Therefore, the microbial carrier 13 always circulates between the fluidized bed 10 and the sprinkling filter bed 11.
[0030]
A roller 30 as shown in FIG. 3 may be provided at the communication port 17 so that the microorganism carrier 13 can be easily moved.
[0031]
As another form, a motor 31 and a belt 32 as shown in FIG. 4 may be installed, and the driving force of the motor 31 may be moved via the connecting belt 33 and the pulley 34.
[0032]
Furthermore, as shown in FIG. 5, a bypass 35 connecting the fluidized bed portion 10 and the communication port 17 is installed, and a water flow is made from the communication port 17 toward the fluidized bed portion 10 via the pump 36. And the microbial carrier 13 may be moved by the water pressure.
[0033]
Furthermore, as shown in FIG. 6, a microorganism carrier circulation pipe 37 may be installed, and the microorganism carrier 13 that is freely moved therein may be forcibly circulated by an underwater pump 38. In this case, by opening the small holes 39, 39,... In the microorganism carrier circulation pipe 37, the liquid content of the fluidized bed portion 10 can be pumped together with the microorganism carrier 13 into the sprinkling filter bed portion 11.
[0034]
The upper part of the fluidized bed part 10 and the sedimentation separation tank 12 communicate with each other, the liquid content in the fluidized bed part 10 overflows and flows into the sedimentation separation tank 12, and the suspended fine particles in the liquid content are allowed to settle in a stationary state. 18 is formed. The sedimentation layer 18 of fine particles accumulated by sedimentation is conveyed to the composting device 5 as return sludge 19 and composted.
[0035]
The water surface 20 of the liquid portion of the fluidized bed 10 is lower than the lowermost hole 15 opened in the bottom surface of the sprinkling filter bed 11 and higher than the partition with the sedimentation separation tank 12, and is retained. The above operation becomes possible.
[0036]
As a result, the sludge accumulated on the upper surface only by the conventional trickling filter system is circulated together with the microorganism carrier 13 in the present invention. Maintenance is reduced. At the same time, it is possible to operate with a high processing capacity for a long time.
[0037]
Here, the form which further processes the water processed by the sprinkling filter floor part 11 in FIG. 7 is shown.
[0038]
In the case where the water treatment capacity is low only with the sprinkling filter bed 11, the sprinkling filter bed 11 is used only for the purpose of draining the microorganism carrier 13 and removing the accumulated sludge. The tank 21 may be provided independently.
[0039]
【The invention's effect】
As described above, the present invention comprises a wastewater treatment apparatus comprising a fluidized bed part, a sprinkling filter bed part, and a sedimentation separation tank, and circulating a microorganism carrier between the sprinkling filter bed part and the fluidized bed part. In addition, it is possible to suppress the clogging by the accumulated sludge in the sprinkling filter floor and to efficiently treat the organic wastewater in the wastewater treatment apparatus over a long period of time.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram from the front of a garbage disposal apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic view from the front direction of the waste water treatment apparatus.
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 waste water treatment apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Raw garbage processing apparatus 2 ... Flow rate adjustment tank 3 ... Solid-liquid separation apparatus 4 ... Waste water treatment apparatus 5 ... Composting apparatus 10 ... Fluidized bed part 11 ... Sprinkling filter bed part 12 ... Precipitation separation tank 13 ... Microorganism carrier 14 ... Liquid content And microbial carrier flow 15 ... drainage hole 16 on the bottom of the sprinkling filter bed ... treated water 17 ... communication port 18 connecting the sprinkling filter bed and fluidized bed ... sedimentary bed 19 of suspended particulates ... return sludge 20 ... liquid spill surface 21 ... Waste water treatment tank 30 ... Roller 31 ... Motor 32 ... Belt 33 ... Connection belt 34 ... Pulley 35 ... Bypass 36 ... Pump 37 ... Microorganism carrier circulation pipe 38 ... Submersible pump 39 ... Small hole

Claims (6)

A flow rate adjusting tank for temporarily storing garbage crushed liquid obtained by pulverizing food waste together with water;
A solid-liquid separator for separating the crushed liquid supplied from the flow rate adjusting tank into a solid component and a liquid component;
A composting device for composting the solids separated by the solid-liquid separation device;
A wastewater treatment apparatus for obtaining treated water by microbial treatment of the liquid component supplied from the solid-liquid separator having a sprinkling filter bed and a fluidized bed ;
In a garbage disposal apparatus comprising:
The sprinkling filter bed is filled with a microbial carrier, and has a communication port between the sprinkling filter bed and the fluidized bed, and the microbial carrier circulates and moves through the communication port. Garbage disposal device. 2. The garbage processing apparatus according to claim 1, wherein a bottom surface of the sprinkling filter bed has a hole, and the treated water is allowed to pass through to drain. 3. The garbage processing apparatus according to claim 1, wherein the microbial carrier is a carrier having a specific gravity smaller than that of water and / or having closed cells. 4. The garbage processing apparatus according to claim 1, wherein a lower part of the sprinkling filter bed part and an upper part of the fluidized bed part communicate with each other through the communication port. 5. The apparatus according to claim 1, further comprising a sedimentation separation tank, wherein the upper part of the fluidized bed portion and the upper part of the precipitation separation tank are in communication with each other, and the liquid component is contained in the fluidized bed. A garbage disposal apparatus overflows from the section into the precipitation separation tank. The apparatus according to any one of claims 1 to 5, wherein the composting apparatus is filled with the microorganism carrier in a tank, and the solid content is composted by microorganisms. apparatus.

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