JP2020151687A - Kitchen wastewater treatment apparatus - Google Patents

Abstract

To provide a kitchen wastewater treatment apparatus easily downsized capable of treating kitchen wastes and grease contained in kitchen wastewater without spreading a nasty smell.SOLUTION: A kitchen wastewater treatment apparatus includes a sink unit, a grease trap unit arranged below the sink unit, and a kitchen waste volume decreasing unit. The sink unit is equipped with an exhaust port at the bottom for discharging kitchen wastewater. The grease trap unit has a kitchen waste recovery region for recovering kitchen wastes contained in the kitchen wastewater and an oil-water separation region for separating oil and water contained in the kitchen wastewater. The kitchen waste volume decreasing unit is equipped with a loading port of the kitchen wastes recovered in the kitchen waste recovery region and a residue discharge port for discharging a treatment residue of the kitchen wastes of which the volume is decreased to the outside. A connection pipe connects the residue discharge port of the kitchen waste volume decreasing unit and the grease trap unit.SELECTED DRAWING: Figure 2

Description

The present invention relates to a kitchen wastewater treatment device.

Kitchen wastewater discharged from the kitchen of a restaurant generally contains kitchen waste (garbage), oils and fats, and water. A grease trap is provided in the kitchen so that the kitchen waste and oils and fats contained in the kitchen wastewater are not directly discharged to the sewer, and the kitchen waste and oils and fats are separated and collected from the kitchen wastewater. The kitchen waste and oils and fats collected by the grease trap are generally prone to putrefaction and easily cause offensive odors. Therefore, it is preferable to promptly treat the recovered kitchen waste and oils and fats so that the offensive odor does not diffuse.

Patent Document 1 discloses a waste treatment system in which kitchen waste and oils and fats recovered from kitchen wastewater are treated with anaerobic bacteria to generate methane gas, and the generated methane is used for a boiler and power generation.

Japanese Patent No. 5201689

In order to obtain an amount of methane gas that can be used in a boiler or power generation using a waste treatment system as disclosed in Patent Document 1, a large amount of kitchen waste and fats and oils are required. Therefore, such a waste treatment system is considered to be useful in a large-scale facility such as a food processing factory or a hotel. On the other hand, it is not realistic to use the waste treatment system as disclosed in Patent Document 1 in the kitchen of a small restaurant where the amount of waste and fats and oils is relatively small. Therefore, in the kitchen of a small restaurant, there is a demand for a treatment device that is small and can treat the offensive odor generated from the kitchen waste and oils and fats collected from the kitchen wastewater so as not to diffuse.

The present invention has been made in consideration of the above circumstances, and an object of the present invention is that kitchen wastewater and oils and fats contained in kitchen wastewater can be treated without diffusing offensive odors, and miniaturization is easy. The purpose is to provide a kitchen wastewater treatment device having various configurations.

In order to solve the above problems, the present invention employs the following means.

(1) The kitchen wastewater treatment device according to one aspect of the present invention is a kitchen wastewater treatment device for treating kitchen wastewater containing kitchen waste, oil and fat, and water, and is located below the sink portion and the sink portion. It has a grease trap portion and a kitchen waste volume reduction processing portion, the sink portion has a drain port for discharging the kitchen drainage at the bottom, and the grease trap portion is included in the kitchen drainage. The kitchen waste collection area for collecting the kitchen waste, the oil-water separation region for separating the oil and fat content and the water content contained in the kitchen drainage from which the kitchen waste was collected in the kitchen waste collection area, and the oil-water separation region were separated. The kitchen waste volume reduction processing unit is provided with a drain pipe for taking out the water to the outside, and the kitchen waste volume reduction processing unit is provided with a kitchen waste inlet collected in the kitchen waste collection area and a processing residue discharge for extracting the treatment residue of the reduced volume kitchen waste to the outside. It is provided with an outlet, and is provided with a connecting pipe for connecting the treatment residue discharge port of the kitchen waste volume reduction treatment section and the grease trap section.

According to the kitchen wastewater treatment apparatus of the above aspect, since the grease trap portion is arranged below the sink portion, the size of the apparatus can be reduced. Further, since the taken out kitchen can be quickly reduced in volume by the kitchen waste volume reduction processing unit, it is possible to suppress the generation of offensive odor due to putrefaction of the kitchen waste. Further, since the connecting pipe for connecting the treatment residue discharge port of the kitchen waste volume reduction treatment section and the grease trap section is provided, the treatment residue can be sent to the grease trap section without the operator directly touching the treatment residue. Furthermore, since the treatment residue sent to the grease trap portion is accumulated in the water stored in the oil-water separation region, the offensive odor of the treatment residue is unlikely to flow out to the outside. Therefore, the treatment residue can be stored for a relatively long period of time.

(2) In the kitchen wastewater treatment apparatus of (1), the grease trap portion may be further provided with a solid matter outlet for taking out solid matter to the outside.

In the kitchen wastewater treatment device having the above configuration, the fine kitchen wastewater contained in the kitchen wastewater and the treatment residue generated in the kitchen wastewater volume reduction treatment unit can be relatively easily discharged to the outside through the solid matter outlet. Can be taken out.

(3) In the kitchen wastewater treatment apparatus according to (1) or (2), the end portion of the connecting pipe on the grease trap portion side is arranged at a position where the treatment residue is received by the kitchen waste collection area. May be good.

In the kitchen wastewater treatment apparatus having the above configuration, coarse treatment residue with insufficient volume reduction can be recovered in the kitchen waste collection area, and the collected treatment residue is reduced again in the kitchen waste volume reduction treatment section. It can be made into a volume, which can surely reduce the volume of the kitchen.

According to the present invention, it is possible to provide a kitchen wastewater treatment apparatus having a structure in which kitchen wastewater and oils and fats contained in kitchen wastewater can be treated without diffusing offensive odors and can be easily miniaturized. Become.

It is a top view of the kitchen wastewater treatment apparatus of one Embodiment which concerns on this invention. FIG. 2 is a sectional view taken along line II-II of FIG. It is a right side view of the kitchen wastewater treatment apparatus shown in FIG. It is a state which separated the sink part of the kitchen wastewater treatment apparatus shown in FIG. 1, and is the top view explaining the flow of the liquid in a grease trap.

Hereinafter, the kitchen wastewater treatment apparatus according to the present invention will be described with reference to the drawings.
The kitchen wastewater treatment device of the present embodiment is used, for example, for treating kitchen wastewater generated in a restaurant. Kitchen drainage generally contains kitchen waste (garbage), fats and oils, and water. The kitchen wastewater treatment device of the present embodiment has a function of collecting the kitchen wastewater contained in the kitchen wastewater and reducing the volume of the collected kitchen wastewater.

FIG. 1 is a plan view of a kitchen wastewater treatment device according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 is a right side view of the kitchen wastewater treatment apparatus shown in FIG. FIG. 4 is a plan view showing a state in which the sink portion of the kitchen wastewater treatment apparatus shown in FIG. 1 is separated, and explains the flow of the liquid in the grease trap.

As shown in FIGS. 1 to 4, the kitchen wastewater treatment device 10 of the present embodiment is provided on the side of the sink portion 20, the grease trap portion 30 arranged below the sink portion 20, and the sink portion 20. It has a kitchen waste volume reduction processing unit 50, and a connecting pipe 70 for connecting the grease trap unit 30 and the kitchen waste volume reduction processing unit 50. In the kitchen wastewater treatment device 10 of the present embodiment, the sink portion 20 and the grease trap portion 30 overlap each other in a plan view. Therefore, the kitchen wastewater treatment device 10 of the present embodiment can be installed in a smaller flat space as compared with the case where the sink portion 20 and the grease trap portion 30 do not overlap in a plan view.

The kitchen wastewater treatment device 10 has a top plate 11 and a back guard 12 on the upper portion, and a decorative plate 13 on the side portion. Further, a pedestal 15 for supporting the kitchen effluent treatment device 10 is provided below the kitchen effluent treatment device 10, and a reinforcing material 14 is installed in a part of the pedestal 15. Since the kitchen wastewater treatment device 10 of the present embodiment has a pedestal 15 at the lower part, wastewater and solid matter can be easily discharged and / or recovered from the U-shaped pipe 39 and the solid matter outlet 40 described later.

The sink portion 20 is a water tank that receives the kitchen drainage 1, and is opened in a substantially rectangular shape. The sink portion 20 is provided with a drain port 21 for discharging the kitchen drainage 1 at the bottom, and the bottom surface of the sink portion 20 has a gradient that gradually decreases toward the drain port 21. Handles 22 and 22, respectively, are attached to the upper ends of the facing inner wall surfaces of the sink portion 20 so as to be embedded. By pulling out and lifting the handle 22, the sink portion 20 and the grease trap portion 30 can be separated from each other. Further, the sink portion 20 includes a drain plug 23 for closing the drain port 21. Further, an overflow hole (not shown) is provided on the upper side surface of the sink portion 20. When the kitchen drainage 1 in the sink portion 20 continues to increase with the drainage port 21 closed by the drainage port plug 23, the kitchen drainage 1 is allowed to flow into the grease trap portion 30 through this overflow hole. Therefore, the kitchen wastewater 1 does not overflow from the kitchen wastewater treatment device 10.
It is preferable to provide a simple deodorizing mechanism in the overflow hole. Examples of the deodorizing mechanism include a self-weight closing type. The self-weight closing type deodorizing mechanism is a mechanism that uses a sealing member that normally closes the overflow hole by its own weight, and when the kitchen drainage 1 is flooded, it separates from the overflow hole and opens the overflow hole. As a result, it is possible to prevent the odor rising from the grease trap portion 30 and the oil-water separation trap 36, which will be described later, from leaking from the overflow hole at normal times.

The grease trap unit 30 separates the kitchen drainage 1 into the kitchen waste 2 (solid) and the liquid 3, and further separates the kitchen waste collection area 31 for collecting the kitchen waste 2 and the liquid 3 separated from the kitchen drainage 1 into oil and fat content 4. It has an oil-water separation region 34 that separates the water and the water 5. The grease trap unit 30 further includes a drain pipe 38 for taking out the water 5 separated in the oil-water separation region 34 to the outside, and a solid matter outlet 40 for taking out the fine solid matter 6 that has passed through the basket 32.
In FIG. 2, the grease trap portion 30 has a flat bottom surface. The bottom surface of the grease trap portion 30 does not have to be flat, and may have, for example, a gradient that gradually decreases toward the oil-water separation trap 36 described later.

The kitchen waste collection area 31 includes a basket 32 and a basket support portion 33 that detachably supports the basket 32.
The basket 32 is a porous body having a drainage hole, and the kitchen waste 2 is separated from the kitchen drainage 1 and collected by passing the liquid 3 in the kitchen drainage 1. As the material of the basket 32, a wire mesh, a punching metal plate, an expanded metal plate, or the like can be used. It is preferable that the basket 32 is covered with a net (not shown) having a hole diameter smaller than that of the drain port of the basket 32 so that the kitchen waste 2 can be collected together with the net. The net is preferably made of a biodegradable resin material. Since the net formed of the biodegradable resin material can be decomposed by microorganisms together with the kitchen waste 2, the kitchen waste 2 in the basket 32 can be put into the kitchen waste volume reducing treatment unit 50 together with the net. As the biodegradable resin material, for example, starch, cellulose, and polylactic acid can be used.

The oil-water separation region 34 has a partition plate 35 and an oil-water separation trap 36.
The partition plate 35 has a function of adjusting the outflow direction of the liquid 3 so that the liquid 3 that has passed through the basket 32 flows upward between the partition plate 35 and the basket support portion 33. By allowing the liquid 3 to flow upward, the oil and fat content 4 in the liquid 3 having a relatively small specific gravity quickly moves upward, and the water content 5 in the liquid 3 having a relatively large specific gravity moves downward. ..

The oil-water separation trap 36 includes a tubular member 37 (baffle) and a drain pipe 38 arranged inside the tubular member 37.
The tubular member 37 is a member having a cylindrical shape having an opening 37a at the bottom and a vent hole (not shown) at the top. Since it is difficult for the oil and fat content 4 having a small specific gravity to move downward to the opening 37a of the tubular member 37, the water content 5 having a large specific gravity is predominantly taken into the opening 37a of the tubular member 37.

The drainage pipe 38 has an opening 38a at the upper side and a U-shaped pipe 39 at the lower side. Moisture 5 taken into the tubular member 37 is sent to the drain pipe 38 through the opening 38a, and is taken out to the outside (sewage pipe) through the U-shaped pipe 39. By passing through the U-shaped tube 39, it is possible to prevent an offensive odor from entering the grease trap portion 30 from the outside.

The oil-water separation trap 36 is preferably arranged in the center of the oil-water separation region 34. In this case, since the flow of the liquid 3 proceeds in all directions of the oil-water separation region 34, the entire oil-water separation region 34 can be effectively used, and even if the size is small, the oil / fat content 4 and the water content 5 can be efficiently used. It can be separated (see FIG. 4).

The solid matter outlet 40 is arranged at the bottom of the grease trap portion 30. The solid matter outlet 40 is provided with a cock 40a, and by opening the cock 40a, the solid matter 6 deposited on the bottom can be appropriately taken out to the outside.

The kitchen waste volume reduction processing unit 50 externally displays the kitchen waste input port 51 provided at the top, the kitchen waste treatment tank 53 provided inside, and the treatment residue 7 of the kitchen waste 2 whose volume has been reduced in the kitchen waste treatment tank 53. It has a processing residue discharge port 59 for discharging and a control panel 60. The kitchen debris inlet 51 is provided with a lid 52.
The kitchen waste inlet 51 can be provided at the top and / or side of the kitchen waste volume reduction processing unit 50. In the present embodiment, the case where the lid is provided at the top will be described, but when the kitchen waste inlet 51 is provided at the side, it is preferable to adjust the lid so that it opens at an angle of about 45 degrees. In this case, the work of putting in the kitchen waste collected in the basket 32 becomes relatively easy.

The kitchen waste treatment tank 53 includes a perforated plate 54 provided at the bottom, a kitchen waste treatment material 55 arranged on the perforated plate 54, a stirrer 56 for stirring the kitchen waste treatment material 55, and a stirrer 56. It is provided with a rotating shaft 57 to support. The kitchen waste treatment material 55 is used as a carrier carrying a microorganism capable of decomposing the kitchen waste 2. As the microorganism, for example, aerobic bacteria can be used. The kitchen waste treatment material 55 has a size that does not pass through the hole 54a of the perforated plate 54. The stirrer 56 has a spatula 56a at the tip. The rotating shaft 57 is rotatably supported by the motor 58.

When aerobic bacteria are used, water may be supplied into the kitchen waste treatment tank 53 by attaching a water supply device in order to promote the activity of the aerobic bacteria. Further, in order to promote the activity of aerobic bacteria, an intake port for taking in air may be provided in the kitchen waste treatment tank 53. The intake port can be provided, for example, in the vicinity of the kitchen debris inlet 51.
It is preferable that the kitchen waste treatment tank 53 is removable. As a result, when the kitchen waste treatment tank 53 fails, only the kitchen waste treatment tank 53 can be replaced.

The treatment residue discharge port 59 discharges the fine treatment residue 7 that has passed through the hole 54a of the perforated plate 54 of the kitchen waste treatment tank 53 to the outside. The treatment residue discharge port 59 has a shape in which the lower surface 59a is inclined downward toward the outside, and the treatment residue 7 is discharged to the outside by moving on the lower surface 59a due to its own weight.
Further, in order to flush the treatment residue 7 in the treatment residue discharge port 59 to the outside, a water supply device may be attached above the portion where the lower surface 59a is inclined to supply water into the kitchen waste treatment tank 53. Further, the shape of the lower surface 59a may be a shape (tapered) in which the width gradually tapers from above toward the connecting pipe 70. As a result, the treatment residue 7 in the treatment residue discharge port 59 is more efficiently discharged to the outside.

The control panel 60 manages the operation of the kitchen waste volume reduction processing unit 50. The control panel 60 controls, for example, the motor 58 to adjust the stirring speed of the kitchen waste treatment material 55 by the stirring tool 56. In addition, the water supply device attached as needed is controlled to adjust the amount of water supplied to the kitchen waste treatment tank 53 or the treatment residue discharge port 59. The kitchen waste volume reduction processing unit 50 may adjust the internal temperature by using a heater (not shown). When the volume reduction treatment of the kitchen waste 2 is performed using microorganisms, the internal temperature of the kitchen waste volume reduction treatment unit 50 is preferably adjusted according to the activity of each microorganism, for example, 20 ° C. to 40 ° C. The temperature of the heater may be controlled by the control panel 60 described above.

The connecting pipe 70 connects the grease trap unit 30 and the processing residue discharge port 59 of the kitchen waste volume reduction processing unit 50. The end of the connecting pipe 70 on the grease trap portion 30 side is arranged at a position where the processing residue 7 receives the basket 32 of the kitchen waste collection area 31, and the volume reduction is insufficient, and the coarse processing residue 7 is basketd. 32 allows for recovery.

Next, a kitchen wastewater treatment method using the kitchen wastewater treatment device 10 of the present embodiment will be described.

First, the drain plug 23 of the sink portion 20 is removed. As a result, the kitchen drainage 1 stored in the sink section 20 is sent to the grease trap section 30 via the drain port 21.

The kitchen drainage 1 sent to the grease trap unit 30 is received in the basket 32 of the kitchen waste collection area 31. The basket 32 separates and collects the kitchen waste 2 contained in the kitchen drainage 1. The liquid 3 (oil and fat content 4 and water content 5) that has passed through the basket 32 is sent to the oil-water separation region 34. In the oil-water separation region 34, the oil-and-fat content 4 and the water content 5 in the liquid 3 flow upward between the partition plate 35 and the basket support portion 33, and the oil-and-fat content 4 having a relatively small specific gravity is relatively upward. Moisture 5 having a particularly large specific gravity is stored downward.

The water 5 stored below the oil-water separation region 34 is sent to the inside of the oil-water separation trap 36 through the opening 37a of the tubular member 37 of the oil-water separation trap 36. Moisture 5 inside the oil-water separation trap 36 is taken out to the outside through the opening 38a of the drain pipe 38. Further, the fine solid matter 6 that has passed through the basket 32 is taken out from the solid matter outlet 40 by opening the cock 40a.

The volume of the kitchen waste collected in the basket 32 is reduced as follows.
First, the handle 22 of the sink portion 20 is lifted to separate the sink portion 20 and the grease trap portion 30 to expose the grease trap portion 30. Then, the basket 32 is taken out from the basket support portion 33.

Next, the kitchen waste 2 in the removed basket 32 is charged into the kitchen waste input port 51 of the kitchen waste volume reduction processing unit 50. The kitchen waste 2 charged into the kitchen waste inlet 51 is sent to the kitchen waste processing tank 53. In the kitchen waste treatment tank 53, the kitchen waste 2 and the kitchen waste treatment material 55 are agitated by the stirrer 56, and the kitchen waste 2 is decomposed by the microorganisms supported on the kitchen waste treatment material 55 to reduce the volume.

The treated residue 7 of the reduced volume kitchen 2 passes through the hole 54a of the perforated plate 54 and falls into the treated residue discharge port 59. The treatment residue 7 that has fallen into the treatment residue discharge port 59 moves on the lower surface 59a of the treatment residue discharge port 59 due to its own weight and is discharged to the outside.

The processing residue 7 discharged to the outside is sent to the grease trap section 30 via the connecting pipe 70. The processing residue 7 sent to the grease trap unit 30 is received in the basket 32 of the kitchen waste collection area 31. Only the coarse treatment residue 7 is recovered by the basket 32. The treatment residue 7 recovered by the basket 32 is subjected to volume reduction treatment again by the kitchen waste volume reduction processing unit 50 together with the kitchen waste 2. On the other hand, the fine processing residue 7 that has passed through the basket 32 is deposited on the bottom of the grease trap portion 30 and then taken out from the solid matter outlet 40 together with the solid matter 6.

Further, when the sink portion 20 and the grease trap portion 30 are separated to expose the grease trap portion 30, the oil and fat content 4 stored in the upper part of the oil-water separation region 34 is recovered. The recovered fats and oils 4 are stored in a highly airtight container, for example, so that an offensive odor does not diffuse. By separating the sink portion 20 and the grease trap portion 30, the connecting pipe 70 can be visually recognized from the grease trap portion 30 side, and the connecting pipe 70 can be easily cleaned.

According to the kitchen wastewater treatment apparatus 10 of the present embodiment having the above configuration, since the grease trap portion 30 is arranged below the sink portion 20, the size of the apparatus can be reduced. Further, since the volume of the taken out kitchen waste 2 can be rapidly reduced by the kitchen waste volume reducing processing unit 50, it is possible to suppress the generation of offensive odor due to the putrefaction of the kitchen waste 2. Further, since the connecting pipe 70 for connecting the processing residue discharge port 59 of the kitchen waste volume reduction processing unit 50 and the grease trap unit 30 is provided, the operator does not directly touch the processing residue 7, and the processing residue 7 is transferred to the grease trap unit 30. Can be sent to. Furthermore, since the treatment residue 7 sent to the grease trap section 30 is deposited below the water content 5, the offensive odor of the treatment residue 7 is unlikely to flow out to the outside. Therefore, the treatment residue 7 can be stored for a relatively long period of time. Then, when the treatment residue 7 is deposited to some extent, it can be taken out together with the fine solid matter 6 contained in the kitchen drainage 1 through the solid matter outlet 40 of the grease trap portion. Therefore, the kitchen wastewater treatment device 10 of the present embodiment has a configuration that can be easily miniaturized, and can stably treat even a small amount of kitchen waste 2 and oil / fat content 4 contained in the kitchen wastewater 1.

Further, in the kitchen wastewater treatment device 10 of the present embodiment, the end of the connecting pipe 70 on the grease trap portion 30 side is arranged at a position where the basket 32 of the kitchen waste collection area 31 receives the treatment residue 7, so that the kitchen waste is reduced. The coarse treatment residue 7 whose volume reduction by the volume treatment unit 50 is insufficient can be recovered in the kitchen waste collection area 31. Then, the volume of the kitchen waste 2 can be reduced more reliably by reducing the volume of the recovered coarse treatment residue again in the kitchen waste volume reducing treatment unit 50.

Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. The embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. Further, the embodiments include, for example, those that can be easily assumed by those skilled in the art, those that are substantially the same, and those that have an equal range.

In the kitchen wastewater treatment device 10 of the present embodiment, the kitchen wastewater volume reduction treatment unit 50 is a biodegradable treatment device that decomposes the kitchen waste water 2 by using microorganisms carried on the kitchen waste treatment material 55. It is not limited. For example, as the kitchen waste volume reduction processing unit 50, various processing devices used as a kitchen waste processing device such as a drying type processing device, an incineration type processing device, and a hybrid type processing device in which drying and biodegradation are used in combination are used. You may use it.

Further, in the kitchen wastewater treatment device 10 of the present embodiment, the solid matter outlet 40 is provided at the bottom of the grease trap portion 30, and the solid matter 6 deposited on the bottom of the grease trap portion 30 is taken out from the solid matter outlet. The 40 can be taken out to the outside, but the present invention is not limited to this. For example, instead of providing the solid matter outlet 40, a pump may be installed to pump the solid matter 6.

1 Kitchen drainage 2 Kitchen waste 3 Liquid 4 Oils and fats 5 Moisture 6 Solids 7 Treatment residue 10 Kitchen wastewater treatment equipment 11 Top plate 12 Back guard 13 Decorative plate 14 Reinforcing material 15 Leg stand 10 Kitchen wastewater treatment equipment 20 Sink section 21 Handle 23 Drainage port plug 30 Grease trap part 31 Kitchen waste collection area 32 Basket 33 Basket support part 34 Oil-water separation area 35 Partition plate 36 Oil-water separation trap 37 Cylindrical member 37a Opening 38 Drainage pipe 38a Opening 39 U-shaped pipe 40 Solid Outlet 40a Cock 50 Kitchen waste volume reduction treatment part 51 Kitchen waste inlet 52 Lid 53 Kitchen waste treatment tank 54 Perforated plate 54a Hole 55 Kitchen waste treatment material 56 Stirrer 56a Spatula 57 Rotating shaft 58 Motor 59 Treatment residue discharge port Board 70 connecting pipe

Claims (3)

It is a kitchen wastewater treatment device for treating kitchen wastewater containing kitchen waste, oil and fat, and water.
It has a sink unit, a grease trap unit arranged below the sink unit, and a kitchen waste volume reduction processing unit.
The sink portion is provided with a drain port at the bottom for draining the kitchen drainage.
The grease trap unit separates the kitchen waste collection area for collecting the kitchen wastewater contained in the kitchen drainage, and the oil and fat content and the water content contained in the kitchen wastewater for which the kitchen wastewater is collected in the kitchen wastewater collection area. It is provided with an oil-water separation region and a drainage pipe for taking out the water separated in the oil-water separation region to the outside.
The kitchen waste volume reduction processing unit is provided with an input port for kitchen waste collected in the kitchen waste collection area and a processing residue discharge port for taking out the treatment residue of the reduced volume kitchen waste to the outside.
A kitchen wastewater treatment apparatus including a connecting pipe for connecting the treatment residue discharge port of the kitchen waste volume reduction treatment section and the grease trap section. The kitchen wastewater treatment device according to claim 1, wherein the grease trap unit further includes a solid matter outlet for taking out solid matter to the outside. The kitchen wastewater treatment apparatus according to claim 1 or 2, wherein the end of the connecting pipe on the grease trap portion side is arranged at a position where the treatment residue is received by the kitchen waste collection area.

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