JP2003225658A - Apparatus for treating fat and oil matter, and storage tank for water to be treated - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for treating fat and oil matter in which the fat and oil matter is removed without handwork and the cost for discarding the fat and oil matter is not induced. <P>SOLUTION: In the apparatus 1 for treating the fat and oil matter in a water to be treated, the inside of a tank 2 is divided into a flow-in chamber 21 to which the water to be treated flows in and a circulation chamber 23 from which the water to be treated flows out to be circulated by a 1st weirs 15a, 15b and further a discharge chamber 22 is divided by a 2nd weir 16. The inside of the flow-in chamber 21 is divided into a plurality of zones 21a, 21b, 21c, 21d... by partition plates 17 in each of which a passage 19 for the water to be treated is formed on the lower end, and partition walls 20 are erected on the bottom surface of each zone so that the upper end position of the partition wall is higher than the lower end position of the partition plate 17. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil and fat treatment device and a treated water storage tank. More specifically, the present invention relates to an oil and fat treatment device that treats water containing oil and fat after washing dishes and decomposes the oil and fat, and a treated water storage tank provided in this device.

[0002]

2. Description of the Related Art Conventionally, grease traps for removing oils and fats in washing water used for washing dishes and cooking utensils have been widely used in kitchens and the like. This grease trap is generally just a container having a volume similar to a bath. Then, the cleaning water containing oil and fat (hereinafter referred to as water to be treated) is stored in this container, and the solid oil and fat layer that is solidified and floated on the water surface is manually removed.

When such a grease trap is used,
It is necessary to regularly remove the solid fat layer, and it is necessary to dispose of the solid fat by requesting an industrial waste dealer. It takes time and money, leading to an increase in the treatment cost of the water to be treated.

The present invention has been made in order to solve the above problems, and requires no manual work for removing fats and oils when treating water to be treated, and also costs for discarding the fats and oils. It is an object of the present invention to provide an oil-and-fat treatment device that does not have such a problem, and a treated water storage tank that is preferably used in this oil-and-fat treatment device.

[0005]

A treated water storage tank according to the present invention is a treated water storage tank provided in an oil and fat treatment apparatus for treating oil and fat in treated water. The one weir is divided into at least one first section and at least one second section, the first section is provided with an inlet of the treated water for circulating the treated water, An outlet for the water to be treated for circulating the water to be treated is arranged in the second section.

With this structure, when the water to be treated is put into the first compartment, the upper layer portion of the water to be treated moves to the second compartment over the upper end of the first weir as the water level rises. Then, the water to be treated that has moved to the second section can be circulated through the outlet. That is, if the water to be treated contains fats and oils, fats and oils having a relatively small specific gravity move to the second compartment. Minutes are processed. Further, since the upper layer portion containing a relatively large amount of oil and fat from the water to be treated can be naturally overflowed from the upper end of the weir, the water to be treated can be prevented from being inadvertently stirred by using the forced separation means. Therefore, the effect of separating oil and fat is high.

The first section is divided into an inflow chamber and an exhaust chamber by a second weir, the upper end of the second weir is higher than the upper end of the first weir, and the inlet is It is preferable that the treated water storage tank is arranged in the inflow chamber, and the discharge chamber is provided with a discharge port for discharging the treated water.

Because the water level of the water to be treated is set between the upper end of the first weir and the upper end of the second weir to proceed with the treatment, and then the water level is set higher than the upper end of the second weir. This is because if it is raised, sufficiently treated water can be moved to the discharge chamber and discharged. Of course, the water to be treated may be simply fed so that the water level is near the upper end of the second weir, without setting the water level accurately.

Further, it is preferable that the treated water storage tank has the second section having an inclined bottom surface and the outlet is arranged on the lower side of the bottom surface of the second section.

This is because the water to be treated can be circulated even if the amount of water to be treated that has moved to the second section is small.

Further, any one of the treated water storage tanks, wherein the first weir is formed with an opening for communicating the first section and the second section. Is preferred.

The treated water can be sent from the first compartment to the second compartment through this opening, and as a result, the viscosity of the treated water in the second compartment can be adjusted to improve the circulation efficiency. Is. That is, the viscosity of the water to be treated in the second compartment may be high depending on the quality and amount of the oil and fat in the water to be treated. At this time, a part of the lower layer water in the first compartment having a relatively small amount of oil and fat is sent to the second compartment through the opening to be mixed with the highly viscous water to be treated, thereby lowering the viscosity thereof.

Further, a treated water storage tank having the above-mentioned inflow chamber, in which a partition plate which divides the inflow chamber into a plurality of areas and has a passage for the untreated water at the lower end thereof, It is preferable that the treated water storage tank is provided with a partition wall that is provided upright on the bottom surface of each of the divided areas so that its upper end is higher than the position of the lower end of the partition plate.

This is because by applying the water to be treated flowing into the inflow chamber to the partition plate, the effect of calming the flow of the inflow water can be obtained.

The oil / fat treatment apparatus of the present invention is an oil / fat treatment apparatus for treating the oil / fat in the water to be treated, wherein any one of the above-mentioned treated water storage tanks and the oil / fat are treated. A treatment agent supply device for supplying a treatment agent for performing treatment to the treated water, and a circulation device for circulating the treated water, which is connected to the inlet and the outlet of the treated water storage tank.

With such a configuration, the above-described operational effects can be obtained.

Further, an oil and fat treatment device is preferred in which the treatment agent supply device is configured to supply the treatment agent to the second section of the treated water storage tank.

This is because the treatment agent can be injected in a concentrated manner in the water to be treated which has a relatively large amount of fat and oil, so that the treatment efficiency of the fat and oil is improved.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an oil and fat treatment device and a treated water storage tank of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a side view schematically showing an embodiment of the processing apparatus of the present invention.

The fat and oil treatment device (hereinafter, simply referred to as a treatment device) 1 includes a treated water storage tank (hereinafter, simply referred to as a tank) 2 for temporarily storing treated water. Further, a circulation device 3 for circulating the water to be treated via the tank 2 and a chemical liquid supply device 4 for injecting a chemical liquid as a treatment agent for decomposing oil and fat therein into the water to be treated. It is arranged. As the drug solution, for example, a solution in which bacteria or microorganisms having a function of decomposing fat is dispersed is used.

The circulation device 3 includes a circulation pipe 7 connected to an outlet 5 and an inlet 6 of the treated water for circulation formed in the tank 2, and a circulation pump 8 provided in the circulation pipe 7.
And have. The chemical liquid supply device 4 includes a chemical liquid tank 9 for storing the chemical liquid, a supply pipe 10 for feeding the chemical liquid from the chemical liquid tank 9 to the tank 2, a chemical liquid pump 11 arranged in the supply pipe 10 for pressure-feeding the chemical liquid, A control device 12 for controlling the chemical pump 11 is provided. The control device 12 controls the operations of the circulation pump 8 and the chemical liquid pump 11 in order to balance the circulation time of the water to be treated with the supply amount and supply time of the chemical liquid. As a specific example, the daily operating time of both pumps 8 and 11 is controlled by setting a reservation. In the figure, reference numeral 13 is an air injection pipe for aerating the chemical liquid in the chemical liquid tank 9. Water to be treated containing oil and fat is fed into the tank 2 through a water pipe 14 from a sink (water tank) such as a dishwasher.

This tank 2 is shown in FIGS. FIG. 2 is a perspective view of the tank 2. FIG. 3 (a) is shown in FIG.
3B is a plan view of the tank 2 of FIG. 3, and FIG. 3B is a vertical cross-sectional view of the tank with the partition plate attached. FIG. 4 (a) is shown in FIG.
4 (b) is a front view of the tank 2 of FIG.

As shown in the figure, the inside of the tank 2 is divided into four compartments by two first weirs 15a and 15b and one second weir 16. First, the middle section 2
Reference numeral 1 denotes an inflow chamber 21 into which the water to be treated is fed through the water pipe 14. It is separated from the inflow chamber 21 by the second weir 16 and is in front of it (the direction indicated by the arrow F is the front).
The room located at is a discharge chamber 22 for discharging the treated water. The inflow chamber 21 and the discharge chamber 22 are the first section. The chambers divided from the inflow chamber 21 to the left and right sides by the first weirs 15a and 15b are circulation chambers 23 that are second divisions for dividing the water to be circulated.
Is.

The inlet 6 of the water to be treated to which the circulation pipe 7 is connected is formed in the upper part of the outer peripheral wall 2a of the inflow chamber 21 on the side opposite to the discharge chamber 22.
The outlets 5 of the water to be treated to which the circulation pipes 7 are respectively connected are formed in the lower portions of the. Therefore, the treated water in the circulation chamber 23 is sucked out by the circulation pump 8,
It is returned to the inflow chamber 21 through the circulation pipe 7. Although the inlet 6 is formed directly on the outer peripheral wall 2a in the present embodiment, it may be arranged apart from the outer peripheral wall 2a so that the water to be treated can be dropped into the inflow chamber 21 from above.

The chemical liquid supply pipe 10 from the chemical liquid supply device 4 is connected to each circulation chamber 23 to supply the chemical liquid.
The bottom surface 23a of the circulation chamber 23 is inclined, and the outlet 5
Is formed at the lowest position, it can be circulated even when the amount of water to be treated entering the circulation chamber 23 is small. The outlet 5 may be formed on the outer peripheral wall 2a as shown, or may be formed on the bottom surface 23a of the circulation chamber 23. A discharge port 24 is formed near the bottom of the discharge chamber 22.

The upper ends of the weirs 15a, 15b, 16 are the tank 2
Is lower than the upper end of the outer peripheral wall 2a. In addition, the first weirs 15a and 15b partitioning the circulation chamber 23 from the inflow chamber 21.
Is located at a position where its upper end is lower than the second weir 16. Therefore, when the water level L of the water to be treated that has flowed into the inflow chamber 21 rises, the water to be treated first becomes the first weirs 15a and 1a.
It enters the circulation chamber 23 over the upper end of 5b. When the water level L further rises, the water to be treated crosses over the second weir 16 and the discharge chamber 2
Also enter 2. Therefore, when the water to be treated containing the oil and fat flows into the inflow chamber 21, the oil and fat having a small specific gravity gathers in the upper layer, so that the water relatively containing the oil and fat moves to the circulation chamber 23. As described above, since the chemical liquid is supplied to each circulation chamber 23, the oil and fat content is effectively decomposed. Further, since the circulation pump 8 of the circulation device 3 has an effect of mixing the water to be treated in the circulation pipe 7 and the chemical liquid, the effect of decomposing oil and fat is improved. The injection site of the chemical liquid is not particularly limited to the circulation chamber 23, and may be supplied into the circulation pump 8 in the circulation pipe 7, or may be supplied into the pipe portion on the upstream side of the circulation pump 8, for example.

In this embodiment, the inflow chamber 21 and the exhaust chamber 2
2 and one circulation chamber 23 are provided, but the present invention is not limited to this number. All may be one, or all may be two or more. Further, the discharge chamber 22 may not be provided. However, as will be described later, the discharge chamber 22
It is preferable to provide since the unintended discharge of the water to be treated is prevented.

The left and right first weirs 15 in the inflow chamber 21
Three pairs of guide rails 18 for mounting the detachable partition plate 17 are formed in the vertical direction on a and 15b.
This partition plate 17 is mounted by inserting it into a pair of guide rails 18 from above, leaving a passage 19 for the water to be treated at the bottom of the inflow chamber 21, and leaving the inflow chamber 21 in four sections 21.
It is attached so as to be divided into a, 21b, 21c, and 21d. That is, the lower end of each partition plate 17 when mounted is positioned slightly above the bottom surface 21e of the inflow chamber 21 and below the upper end of the weir. Further, the upper end of the partition plate 17 when mounted is at a position higher than the second weir 16 of the tank 2. Therefore, the water to be treated can move to the adjacent area only through the passage 19. Note that FIG.
In (b), the upper end of the partition plate 17 is made higher than the outer peripheral wall 2a, but it may be made lower than the outer peripheral wall 2a because it is necessary to attach a lid to the tank. Further, as shown in FIG. 3 (b), there is no path through which the water to be treated moves to the circulation chamber 23 in the area 21 d adjacent to the most downstream discharge chamber 22. The water to be treated only moves to the discharge chamber 22 as the water level L rises.

In addition, each area 21a, 21b, 21c, 2
A partition wall 20 that is parallel to the partition plate 17 is provided upright on the bottom of 1d. The upper end of the partition wall 20 is located above the lower end of the partition plate 17 and below the upper end of the weir. The left and right sides of the partition wall 20 are fixed to the left and right first weirs 15a and 15b, respectively. Therefore, the water to be treated can move only over the partition wall 20.

Further, the inlet 6 of the water to be treated and the water pipe 1
The four outlets are arranged in the first section 21a. Therefore, the water to be treated sent into the first area 21a passes through the partition wall 20 from the first area 21a and passes under the partition plate 17 as shown by the arrow in FIG. Repeating the above, the adjacent second and third areas 21
It is possible to sequentially move to b and 21c and reach the fourth area 21d adjacent to the discharge chamber 22. As a result, the effect that the flow of the water to be treated flowing into the inflow chamber 21 is calmed is obtained. Further, in the water to be treated in the water injection chamber 21, only the lower layer portion having a relatively small amount of oil and fat moves toward the discharge chamber 22 side. Therefore, compared with the upstream area (21a side), the treated water in the downstream area (21d side) has less fat and oil. It is considered that the water to be treated in the fourth area 21d on the most downstream side is almost completely treated.

The number of the partition plates 17, that is, the number of areas is not limited. The number may be more or less than the above number.

By providing the second weir 16, that is, by providing the discharge chamber 22, the following effects can be obtained. Only the water to be treated, which has been almost completely treated, crosses over the second weir 16 and enters the discharge chamber 22, and only the water in the discharge chamber 22 is discharged. Therefore, the untreated water is not discharged.

A basket 25 for removing dust is mounted below the inlet 6 and the outlet of the water pipe 14 in the first area 21a. Since the partition plate 17 is detachable, the basket 25 can be easily attached and detached.

The two first weirs 15a and 15b which divide the inflow chamber 21 and the circulation chamber 23 are provided with openings 26 which connect the inflow chamber 21 and the circulation chamber 23, respectively.
The opening 26 is configured so that its opening can be adjusted. The viscosity of the water to be treated in the circulation chamber 23 may be high depending on the quality and amount of oil and fat in the water to be treated. At this time, a part of the lower layer water in the inflow chamber 21 having a relatively small amount of oil and fat is sent into the circulation chamber 23 through the opening 26 and mixed with the high-viscosity water to be treated to lower the viscosity. . By doing so, the circulation efficiency is improved.

In the embodiment described above, the tank 2 is a rectangular parallelepiped, and two circulation chambers 23 and one discharge chamber 22 are arranged on three sides of the inflow chamber 21 as the center. However, the present invention is not limited to such a configuration. The shape of the tank may be a cylindrical shape or a cube or other polygonal cylinder. Also, the arrangement of each room is not limited to the above configuration. For example, the circulation chamber may be arranged in the center and the inflow chamber may be arranged on the side of the circulation chamber. In short, the inflow chamber and the circulation chamber have the water level L of the water to be treated.
It may be arranged so that the upper end thereof overflows and enters the adjacent chamber as it rises.

There are various methods for operating the device 1. For example, the amount of water to be treated sent from the water pipe 14 to the inflow chamber 21 is initially higher than the upper ends of the first weirs 15a and 15b between the circulation chamber 23 and the water level L, and the amount of water to be treated between the discharge chamber 22 and It is set lower than the upper end of the second weir 16 for processing. That is, the oil and fat decomposition treatment is continued without draining at first. As the treatment progresses, the water to be treated is further increased and the water level L is adjusted to the second weir
Slightly above the top of 6. The water thus treated is sequentially discharged. This is an example.

According to the present apparatus 1, since a chemical solution for decomposing oil and fat is used, manual work for solidifying and removing the oil and fat is unnecessary. Further, when the chemical liquid is mixed, the chemical liquid is mixed in the upper layer portion of the water to be treated, which contains a large amount of the fat and oil, so that the fat and oil content can be efficiently decomposed. Also, when separating the water to be treated in the upper layer containing a large amount of fats and oils from the other portions, the water to be treated naturally overflows from the upper end of the weir, so that the water to be treated is not agitated carelessly. .

[0039]

EFFECTS OF THE INVENTION According to the present invention, there is no need to manually remove the oil and fat when treating the water to be treated containing the oil and fat, and the cost of discarding the oil and fat is suppressed. It

[Brief description of drawings]

FIG. 1 is a side view schematically showing an embodiment of a processing apparatus of the present invention.

FIG. 2 is a perspective view of a tank in the fat and oil processing apparatus of FIG.

3 (a) is a plan view of the tank of FIG. 2, and FIG. 3 (b) is a vertical cross-sectional view of the tank with a partition plate attached.

FIG. 4 (a) is a vertical cross-sectional view of the tank of FIG.
FIG. 4B is a front view.

[Explanation of symbols]

1 ... Processing device 2 ... Tank 2a ... Outer wall (of tank) 3 ... Circulator 4 ··· Chemical solution supply device 5 ... (Outlet of treated water) 6 ... ・ (Intake water) entrance 7. Circulation piping 8 ... Circulation pump 9 ... Chemical solution tank 10 ... Supply piping 11 ... Chemical pump 12 ... Control device 13 ... Inhalation tube 14 ... Water pipe 15a, 15b ... first weir 16 ... Second weir 17 ... Partition plate 18 ... Guide rails 19 ··· Passage path (water to be treated) 20 ... Partition walls 21 ... Inflow chamber 21a ... first area 21b ... second area 21c ... third area 21d ... 4th area 21e ... Bottom surface (of inflow chamber) 22 ··· Discharge chamber 23 ... Circulation chamber 23a ... bottom surface (of circulation chamber) 24 ... 25 ... Basket 26 ... Opening L ... Water level

Claims (7)

[Claims] 1. A treated water storage tank provided in an oil and fat treatment device for treating oil and fat in treated water, the interior of which is defined by at least one first partition and at least one first section. The first section is provided with an inlet for the treated water for circulating the treated water, and the second section is provided for the treated section for circulating the treated water. A treated water storage tank for an oil and fat treatment device, which is provided with an outlet for treated water. 2. The first partition is divided into an inflow chamber and an exhaust chamber by a second weir, the upper end of the second weir is higher than the upper end of the first weir, and the inlet is The treated water storage tank for a fat and oil treatment apparatus according to claim 1, wherein the treated water storage tank is provided in the inflow chamber, and the discharge chamber is provided with a discharge port for discharging the treated water. 3. The oil / fat treating apparatus according to claim 1, wherein the second section has an inclined bottom surface, and the outlet is arranged on a lower side of the bottom surface in the second section. Treated water storage tank. 4. The oil and fat treatment according to claim 1, wherein the first weir is formed with an opening for communicating the first section and the second section. Treated water storage tank for equipment. 5. A partition plate which divides the inflow chamber into a plurality of areas and has a passage for water to be treated formed at a lower end thereof, and a partition plate having an upper end on a bottom surface of each of the divided areas. The partition wall which is erected so as to be higher than the position of the lower end is provided inside the inflow chamber, and the partition for the oil and fat treatment device according to any one of claims 2 to 4. Treated water storage tank. 6. An oil and fat treatment device for treating oil and fat in water to be treated, wherein the treated water storage tank according to any one of claims 1 to 5 and the oil and fat are contained. A fat and oil comprising a treating agent supply device for supplying a treating agent for treating the treated water to the treated water, and a circulation device for circulating the treated water, which is connected to an inlet and an outlet of the treated water storage tank. Minute processor. 7. The oil and fat treatment device according to claim 6, wherein the treatment agent supply device is configured to supply the treatment agent to the second section of the treated water storage tank.