JP2001205284A - Garbage treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that fine particles are gathered even on the way of the feed of a supernatant liquid to form small lumps and these small lumps are accumulated in a wastewater treatment apparatus and the piping thereto to generate clogging. SOLUTION: In a gargage treatment apparatus equipped with a solid-liquid separation apparatus (3) for separating the crushing liquid supplied from a flow rate adjusting tank (2) into a solid component and a liquid component, a compost apparatus (4) for composting the solid component separated by the solid-liquid separation apparatus (3), a sedimentation separation apparatus (5) for removing floating fine particles from the liquid component supplied from the solid-liquid separation apparatus (3) and a wastewater treatment apparatus (6) for microbially treating the liquid component from which floating fine particles are removed by the sedimentation separation apparatus (5), the sedimentation separation apparatus (5) is equipped with a sedimentation separation part (10) and a filtring decomposition part (11) and the filtring decomposition part (11) is filled with a microorganism carrier not only to filter the flowing fine particles in the liquid component supplied from the solid-liquid separation apparatus (3) but also to microbially treat the organic component in the floating fine particles to oxidize and decompose the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for introducing garbage crushed with water using a disposer, separating the garbage into solids and liquids, and decomposing organic substances contained in each of the garbage by microorganisms. 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, it is not enough to provide this sedimentation / separation device alone. In addition to the introduction of a part of the suspended particulates into the wastewater treatment device, the particulates also aggregate during the transfer of the supernatant, and the wastewater treatment device and the Agglomerates accumulate in the piping to the pipes and block the pipes, resulting in a decrease in processing capacity, and there is a need to remove accumulated substances and replace microorganism carriers.

[0009]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned problems, and a garbage disposal apparatus according to claim 1 is a garbage disposal apparatus that crushes garbage discharged from a kitchen together with water. A flow control tank for temporarily storing the refuse crushed liquid, a solid-liquid separation device supplied from the flow control tank, for separating the crushed liquid into a solid component and a liquid component, A composting device for composting the separated solid content, a sedimentation separation device for removing suspended particulates from the liquid component supplied from the solid-liquid separation device, and a liquid component from which the suspended particulates are removed by the sedimentation separation device. In a garbage treatment apparatus including a wastewater treatment apparatus for obtaining treated water by microbial treatment, the sedimentation separation apparatus includes a sedimentation separation section and a filtration decomposition section.

According to a second aspect of the present invention, in the apparatus according to the first aspect, the filtration / decomposition unit is filled with a microbial carrier, and is suspended in a liquid supplied from the solid-liquid separation device. The method is characterized in that the fine particles are filtered and the organic components in the floating fine particles are treated with microorganisms to be oxidatively decomposed.

According to a third aspect of the present invention, in the apparatus according to any one of the first to second aspects, the lower part of the sedimentation separation part and the lower part of the filtration decomposition part communicate with each other, and The liquid component moves from the sedimentation separation unit to the filtration decomposition unit due to a water pressure difference between the sedimentation separation unit and the filtration decomposition unit, which is generated when transferring from the upper part of the filtration decomposition unit to the wastewater treatment device. It is characterized by doing.

According to a fourth aspect of the present invention, in the apparatus according to the second aspect, a partition plate for separating the sedimentation separation section into two chambers, an introduction section and an adjustment section, is erected, and a lower portion of the adjustment section is provided. When communicating with the lower part of the filtration and decomposition part, transferring the liquid component from the upper part of the introduction part to the adjustment part, and transferring the liquid part from the upper part of the filtration and decomposition part to the wastewater treatment device. The liquid component moves from the introduction section to the adjustment section due to a water pressure difference generated between the adjustment section and the filtration / decomposition section.

[0013]

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.

The garbage processing system 1 is a flow control tank in which garbage discarded in a sink is crushed by a disposer together with water, and the garbage crushed liquid and kitchen wastewater are introduced and temporarily stored therein. 2. A solid-liquid separator 3 for separating a mixture of crushed garbage and wastewater into a solid component and a liquid component, and a solid material processing device (composting device) for performing composting of the solid separated by the solid-liquid separator 3 4) 4, a sedimentation / separation device 5 for removing suspended particulates in the liquid component separated by the solid-liquid separation device 3, and a wastewater treatment device 6 for decomposing organic matter in wastewater from which the suspended particulates have been removed by the sedimentation / separation device 5 by microorganisms. ,have.

The crushed garbage-containing wastewater temporarily stored in the flow control tank 2 is pumped to the solid-liquid separation device 3 at regular time intervals. The time interval of this pumping is determined by the processing capacity of the waste water treatment device 6 at the subsequent stage.

In the solid-liquid separator 3, the crushed garbage-containing wastewater pumped up is separated into solids such as crushed garbage and sludge and liquids of organic wastewater. The separated solids are sent to the composting device 4 and composted. On the other hand, the liquid component is introduced into the wastewater treatment device 6 after the suspended particulates are removed by the sedimentation / separation device 5, and is discharged to the sewage after removing the organic matter in the liquid component by the microorganism treatment.

Next, FIG. 2 is a schematic view showing the structure of the sedimentation / separation device 5.

The sedimentation / separation device 5 comprises a sedimentation / separation unit 10 and a filtration / decomposition unit 11.

The liquid separated by the solid-liquid separator 3 is introduced into the sedimentation / separation unit 10 of the sedimentation / separation device 5, and is allowed to stand for a certain period of time to precipitate suspended particles in the liquid.

The filtration / decomposition unit 11 is filled with wood fragments 12 having a particle size of 2 to 4 mm, which are microbial carriers.
It has a role of filtering the suspended fine particles that have not been completely precipitated when the supernatant liquid subjected to the precipitation separation in the precipitation separation section 10 passes therethrough. Furthermore, the microorganisms inhabiting the woody strip 12 decompose the organic matter in the filtered suspended fine particles.

As the microorganism carrier, a porous carrier having a particle size of 15 mm or less, preferably 2 to 10 mm, such as a ceramic ball or sponge, may be used.

A space 13 exists above the filtration / decomposition unit 11, and the waste water from which suspended particulates have been removed by a pump or the like is transferred to a waste water treatment device 6 through a pipe 16.

Since the lower part of the sedimentation / separation unit 10 and the lower part of the filtration / decomposition unit 11 are connected, when the wastewater is transferred to the wastewater treatment device 6, a pressure difference is generated between the sedimentation / separation unit 10 and the filtration / decomposition unit 11, As a result, the sedimentation separation unit 10 to the filtration decomposition unit 1
The transfer of liquid to 1 occurs.

Similarly, the solid-liquid separator 3 separates the sedimentation separation unit 1
When the liquid component is introduced to 0, a similar pressure difference occurs, and the liquid moves from the precipitation separation unit 10 to the filtration decomposition unit 11.

The sedimentary layer 14 of the fine particles that settles and accumulates in the sedimentation separation tank 10 is finally conveyed to the composting device 4 as returned sludge 15 for composting.

As a result, the sludge that has stayed in the vicinity of the upper surface of the wastewater treatment apparatus 6 by only the conventional sedimentation and separation is trapped in the filtration / decomposition unit 11 of the sedimentation / separation tank 5 and decomposed by microorganisms. The clogging of the pipe 16 from the treatment device 6 and the sedimentation separation device 5 to the wastewater treatment device 6 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.

FIG. 3 shows another embodiment.

In FIG. 2, when a large amount of suspended particulates accumulates in the filtration / decomposition unit 11, the precipitation / separation unit 10 and the filtration / decomposition unit 1
An adjusting section 17 may be provided between the two sections 1. A portion of the sedimentation / separation section 10 other than the adjusting section 17 partitioned by the partition plate 18 is referred to as an introduction section 20 (see FIG. 3).

The partition plate 18 between the sedimentation separation unit 10 and the adjustment unit 17 is set lower than the water surface 19, and when a liquid component is introduced from the solid-liquid separation device 3, the liquid overflows from the introduction unit 20, thereby causing a supernatant. The liquid is sent to the adjusting unit 17. This supernatant liquid has a lower content of suspended particulates than the liquid directly introduced from the sedimentation / separation unit 10 to the filtration / decomposition unit 11 in FIG. 2, so that the burden on the filtration / decomposition unit 11 can be reduced.

[0031]

As is apparent from the above description, according to the present invention, the sedimentation / separation unit is constituted by the sedimentation / separation unit and the filtration / decomposition unit, and filters the suspended fine particles sent to the wastewater treatment unit.
By decomposing, the clogging of the pipes from the wastewater treatment device and the sedimentation separation device to the wastewater treatment device due to accumulated sludge was suppressed, and efficient treatment of organic wastewater became 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 diagram showing another embodiment of the wastewater treatment device as viewed from the front.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Garbage processing apparatus 2 ... Flow control tank 3 ... Solid-liquid separation apparatus 4 ... Composting apparatus 5 ... Sedimentation separation apparatus 6 ... Wastewater treatment apparatus 10 ... Sedimentation separation part 11 ... Filtration decomposition part 12 ... Microorganism carrier (wood fines) DESCRIPTION OF SYMBOLS 13 ... Transfer space 14 ... Sedimentation layer 15 ... Return sludge 16 ... Pipe from a sedimentation separation apparatus to a wastewater treatment apparatus 17 ... Adjustment part 18 ... Partition plate 19 ... Water surface

Claims (4)

[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 separation device for separating the solid component, a compost device for composting the solid component separated by the solid-liquid separation device, and a compost device for removing suspended particulates from the liquid component supplied from the solid-liquid separation device. A garbage disposal device comprising: a sedimentation separation device; and a wastewater treatment device for microbial treatment of a liquid component from which suspended particulates have been removed by the sedimentation separation device to obtain treated water. A garbage disposal device comprising: a filter unit; 2. The apparatus according to claim 1, wherein the filtration / decomposition unit is filled with a microbial carrier and filters suspended particulates in a liquid component supplied from the solid-liquid separation device. A garbage disposal apparatus characterized in that organic components in the suspended fine particles are treated with microorganisms to oxidatively decompose them. 3. The apparatus according to claim 1, wherein a lower part of the sedimentation / separation unit and a lower part of the filtration / decomposition unit communicate with each other, and the liquid component is supplied to the filtration / decomposition unit. Due to the water pressure difference between the sedimentation separation unit and the filtration decomposition unit, which occurs when transferring from the upper part to the wastewater treatment device,
The garbage disposal apparatus, wherein the liquid component moves from the sedimentation separation section to the filtration decomposition section. 4. The apparatus according to claim 2, wherein a partition plate for separating the sedimentation / separation unit into an introduction unit and an adjustment unit is provided upright, and a lower part of the adjustment unit and a lower part of the filter disassembly unit are provided. And communicating with the liquid component from the upper part of the introduction part to the adjusting part, and the liquid part is generated when the liquid part is transferred from the upper part of the filtration / decomposition unit to the wastewater treatment device, the adjusting part, The garbage disposal device, wherein the liquid component moves from the introduction section to the adjustment section due to a water pressure difference between the filtration and decomposition sections.