JP2007260500A - Separation apparatuses, such as sewage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a separation apparatus of sewage or the like capable of floating a composition having a light specific gravity after separation of the composition securely and at a short time, without requiring an installation space, and small in running cost. <P>SOLUTION: This apparatus comprises a container body 1 having a top-narrowed shape and serving the top as a top separation recovery room R, a treated water supply pipe 2 for supplying treated water OW such as the sewage in this container body 1, an air bubble supply device 4 for generating an air bubble B in the container body 1. Further, the bottom of the container body 1 is provided with a partition plate 17 which has a communication port 17a while partitioning between the bottom and the top of the container body 1. The bottom of this partition plate 17 is loaded with the circulation water utilizing pipe 40 of the air bubble supply device 4 for utilizing the treated water OW. On the other hand, the top of the partition plate 17 is loaded with a circulation supply pipe 42 for supplying the air bubble B generated from the air bubble supply device 4. Furthermore, the top is loaded with the treated water supply pipe 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an oily sewage discharged from a restaurant such as a restaurant, a factory, or the like, and to a separation device such as sewage for separating a composition such as filth and water from these.

Conventionally, a treated water supply pipe is connected to the central axis of a cylindrical or conical container so that a swirl flow is generated in the container. And the like (see, for example, Patent Document 1).
According to such an apparatus, the separated oil floats above the container and is appropriately collected by a collection box or an oil drain pipe. However, since a swirling flow is generated in the container, the once separated oil is stirred again. There is also a possibility of being mixed with water, and there is still room for improvement in terms of oil-water separation accuracy.

In addition to separation of sewage, etc., the separation device generally improves the processing speed of sewage separation, saves installation space, is inexpensive, and does not require running costs. It has been demanded.
JP-A-60-261513

  The present invention has been made from such a background, the composition such as filth from the treated water can be removed more reliably and in a short time, and the composition such as oil that has been separated and floated, It is not mixed with water again due to the swirling flow in the container body, and it is possible to collect the separated levitated material more reliably and to improve the performance of the composition separation. It is an object of the present invention to realize a separation apparatus for wastewater or the like that can meet a wide variety of demands that it can be provided at a relatively low cost and that running costs can be reduced.

  That is, the separation device for sewage according to claim 1 comprises a container body, a treated water supply pipe for supplying treated water such as sewage into the container body, and a bubble supply device for generating bubbles in the container body. In the apparatus for separating the treated water into water and a composition having a lighter specific gravity than water, the container body has a bottomed shape and at least an upper concavity, and this part is separated into an upper part. Furthermore, a partition plate having a communication port is provided at the bottom of the container main body while partitioning the lower portion of the container main body and the upper portion thereof, and the treated water is taken under the partition plate. A circulating water intake pipe of the bubble supply device is disposed, on the other hand, a circulation supply pipe for supplying treated water containing bubbles generated by the bubble supply device is disposed above the partition plate, and further above the circulation supply tube Characterized by the arrangement of treated water supply pipes It is those composed of Te.

  In addition to the requirement of claim 1, the separation apparatus for sewage according to claim 2 introduces treated water having an inner diameter larger than the outer diameter of the treated water supply pipe at the tip of the treated water supply pipe. The cylinder is provided in an externally fitted state.

  Furthermore, in addition to the requirement of claim 2, the separating apparatus for wastewater or the like according to claim 3 is characterized in that the introduction tube is formed in an elbow shape with one end opened upward. is there.

  Furthermore, in addition to the requirements of claim 1, 2, or 3, the separator for waste water or the like according to claim 4 has a discharge pipe for discharging light specific gravity separated and levitated above the container body. It is characterized by being connected.

  Furthermore, in addition to the requirements of claim 1, 2, 3 or 4, the separator for waste water according to claim 5 has an overflow pipe connected to the peripheral wall of the container body. The tip is connected to a level adjusting tube whose length is adjustable.

The separation apparatus for wastewater and the like according to the present invention has the following effects by the above-described means.
That is, according to the separator for wastewater or the like according to claim 1, the composition having a small specific gravity such as oil adheres to the bubbles and immediately rises, and the upper separation and recovery above the container body is performed while being separated from the water. It accumulates in the room. Since the upper separation / recovery chamber is formed in the shape of an upper concavity, a layer of a composition such as oil having a small specific gravity becomes thick, and the composition can be more completely separated and discharged. A partition plate is provided at the bottom of the container body, a circulation intake pipe is disposed below the partition plate, and a circulation supply tube for supplying treated water containing bubbles is disposed above the partition plate. Therefore, it is possible to prevent a composition such as bubbles and filth above the partition plate from being sucked from the circulation intake pipe. Further, since the lower part of the partition plate is not affected by the discharge flow of the treated water, the treated water close to fresh water can be taken and circulated without containing a composition such as filth.

  According to the separation device for sewage or the like according to claim 2, the flow of the treatment water generated in the introduction cylinder acts to suck the treatment water into the introduction cylinder around the introduction cylinder. As a result, a large amount of gas is sucked into the introduction cylinder, and the bubbles efficiently adhere a light specific gravity composition such as filth.

  Further, according to the separation apparatus for wastewater or the like according to claim 3, since the introduction tube is formed in an elbow shape with one end opened upward, the momentum of the treated water discharged from the treated water supply pipe And a composition having a low specific gravity that separates from water does not easily create a swirl of unnecessary treated water in the container body, and easily adheres to bubbles.

  Furthermore, according to the separation apparatus for waste water or the like according to claim 4, since the discharge pipe for discharging the light composition having the specific gravity separated and floated is connected to the upper part of the container main body, the upper part of the container main body automatically. The composition such as filth separated and floated in the upper separation / recovery chamber is discharged out of the container body.

  Furthermore, according to the separation apparatus for sewage or the like according to claim 5, the height of the liquid level in the container main body is adjusted by adjusting the length of the level adjusting pipe, so that the composition such as oil having a light specific gravity from the discharge pipe. Can be adjusted to the height most suitable for discharging.

  The best mode of the present invention is specifically as described in the following examples.

Hereinafter, the separation apparatus for wastewater and the like of the present invention will be described based on the illustrated embodiment.
As shown in FIG. 2, the separation apparatus A such as sewage of the present invention includes a container body 1, a treated water supply pipe 2, a treated water supply pump 3 provided in the middle of the treated water supply pipe 2, and a bubble supply apparatus. 4 and a separator discharge pipe 5 for discharging a composition such as oil O collected above the container body 1. In addition, what is indicated by a symbol G in FIG. 2 is a grease trap that stores and naturally separates the treated water OW mixed with oil into water discharged from a target facility such as a restaurant. There are many. Furthermore, the member shown by the code | symbol 6 is an oil storage tank, stores the oil O separated and discharged | emitted by the separation apparatus A, such as sewage, and also left naturally, and is made into upper layer oil O and lower layer water W To separate.

The container body 1 will be described. The container body 1 has a vertical cylindrical shape with a bottom and a tapered shape at the bottom, and the top tapered portion is an upper separation and recovery chamber, and an upper lid 10a is provided at the upper end. It has been. The container body 1 can be implemented in a rectangular tube shape in addition to the cylindrical shape.
In addition, the outer peripheral wall of the upper part of the container body 1 is provided with a separation outlet 1a for discharging a composition such as oil having a specific gravity lighter than water accumulated in the upper separation / recovery chamber R to the outside. A circular tubular separator discharge pipe 5 is connected. As an example, the separated product discharge port 1a has a semicircular arc shape having an upper portion in a circular arc when viewed from the front.
Incidentally, in the present embodiment, the container body 1 is configured to have a capability of treating the treated water OW of about 10 to several tens t per day, for example. As an example of the outer diameter, the height of the container main body 1 is about 2254 mm, the diameter of the bottom surface is about 980 mm, and the diameter of the upper part is about 165 mm.
Further, an elbow-shaped introduction pipe 11 that receives treated water from the outside is fixedly installed near the center of the container body 1 slightly below. One end of the introduction tube 11 opens upward, and the other end opens in the horizontal direction.

  The other end of the separated product discharge pipe 5 whose one end is located in the upper separation and recovery chamber R is connected to an oil storage tank 6 as shown in FIG. The oil storage tank 6 is connected to a water intake pipe 60 and a drain pipe 61A. In the oil storage tank 6, the upper oil O and the lower water W are naturally separated, and the lower water W is drained to the sewer S or the like. The In addition to taking out the oil O accumulated in the upper separation and recovery chamber R in this way through the separated product discharge pipe 5, an oil recovery box may be provided in the upper portion of the upper separation and recovery chamber R.

An overflow pipe 13 is provided on the outer peripheral wall near the bottom of the container body 1, and the tip of the overflow pipe 13 is positioned near the level height of the separated product discharge pipe 5 at the top of the container body 1. The tip of the overflow pipe 13 is connected to a level adjusting pipe 13a having a female thread on the inner peripheral surface thereof whose length can be adjusted. By changing the height of the tip of the overflow pipe 13, the container body The liquid level in 1 is adjustable. Reference numeral 16 denotes a level adjusting handle for rotating the level adjusting tube 13a. Further, at the front end portion of the overflow pipe 13, a water covering receiver 14 for receiving the treated water OW overflowing from the overflow pipe 13 is provided, and a return pipe 15 is connected to the bottom surface of the water covering receiver 14. The other end is connected to the grease strap G. In addition to connecting the return pipe 15 to the grease trap G in this way, the treated water OW discharged from the target facility is originally low in the content of oil O, and the liquid overflowing from the overflow pipe 13 is almost separated from the oil O. If the water W is in a state that can be discarded as it is into the sewer S, it may be drained directly from the return pipe 15 to the sewer S.
Further, a discharge pipe 12 is provided on the outer peripheral wall of the bottom of the container main body 1. When the inside of the container main body 1 is desired to be emptied, the open / close valve 12a provided in the discharge pipe 12 is opened and discharged.

As shown in FIG. 3, the treated water supply pipe 2 penetrates the container body 1 from the side, and is connected so that the tip is near the entrance lower portion of the introduction pipe 11. An open / close valve 2 a is provided between the treated water supply pump 3 and the container body 1 in the treated water supply pipe 2.
The other end of the treated water supply pipe 2 is connected to the grease strap G as shown in FIG. 2, and the treated water supply pump 3 provided in the middle of the treated water supply pipe 2 is connected to the inside of the grease strap G. The treated water OW is sucked up and discharged into the introduction pipe 11 in the container body 1. Incidentally, for sucking up the treated water OW in the grease trap G, a float apparatus having a function of separating and collecting the floating oil is appropriately connected to the treated water supply pipe 2 and sucked up. As the treated water supply pump 3, the capacity of the container body 1 of the present embodiment is applied with a discharge capacity of about 5 liters / minute, but the treated water supply pump having a larger discharge capacity is used. 3, the treated water supply pipe 2 may be branched as shown by the phantom line in FIG. 2 to provide a branch pipe 2b, and may be returned to the water receiving chamber G6 of the grease trap G described later. Good. By providing the branch pipe 2b and returning the treated water OW to the water receiving chamber G6 of the grease trap G in this way, the treated water OW in the water receiving chamber G6 of the grease trap G can be sufficiently mixed.

  In addition, a disc-shaped partition plate 17 having a diameter of about 100 mm smaller than the inner diameter of the container body 1 is provided slightly above the bottom surface of the container body 1. The partition plate 17 is installed so that a composition such as oil O above the suction pipe 40 is not sucked. The partition plate 17 is supported by support legs 18 as shown in the figure. In addition, a circular plate having a communication port 17a as shown in FIGS. May be adhered to the inner peripheral wall of the container body 1 by welding or other techniques. A circulation intake pipe 40 of the bubble supply device 4 is disposed below the partition plate 17, and a circulation supply pipe 42 is disposed above the partition plate 17. The ends of the circulation intake pipe 40 and the circulation supply pipe 42 face the vicinity of the center of the partition plate 17.

The bubble supply device 4 will be described. The bubble supply device 4 includes the circulation intake pipe 40, an opening / closing valve 41 provided in the circulation intake pipe 40, a circulation supply pipe 42, a circulation pump, a bubble generator 44, and a pressure tank 45. .
More specifically, the bubble generator 44 is provided in the middle of the circulation intake pipe 40, and a circulation pump is connected to the downstream side. In the circulation pump, the bubbles B formed by the bubble generator 44 are agitated with the treated water OW and further refined. The bubble generator 44 is specifically provided with an ejector that feeds about 1 liter of air into the treated water OW per minute.

  Further, the oil storage tank 6 to which the separated discharge pipe 5 is connected will be described in more detail. This is, for example, a bottomed cylindrical container, and a water intake pipe 60 is provided inside as shown in FIG. . The lower end of the intake pipe 60 is positioned near the bottom of the oil storage tank 6 and the upper end of the intake pipe 60 protrudes outside through the upper peripheral wall of the oil storage tank 6 and is connected to an external drain pipe 61A. is doing. A drain pipe 61B is also connected to the lower peripheral wall of the oil storage tank 6 and connected to the drain pipe 61A. The drain pipe 61B is provided with an open / close valve 62. Normally, the open / close valve 62 is closed. With the configuration as described above, the water W at the bottom portion which is naturally separated by the pressure of the oil O sent from the separated product discharge pipe 5 is taken out from the water intake pipe 60 and drained to the sewer S or the like via the drain pipe 61A. .

In addition, the grease trap G is not included in the configuration of the separation apparatus A such as sewage of the present invention, and various grease traps that are generally distributed can be applied. Depending on the discharged treated water OW, the grease strap G may be applied. It is also possible to perform oil-water separation directly by the separation device A such as sewage of the present invention without using the strap G. Since existing grease straps are usually installed in restaurants and factories, the oil / water separation treatment efficiency can be dramatically improved by connecting the separation device A such as sewage of the present invention thereto. It can be done.
The configuration of the grease strap G used in this embodiment will be briefly described below. As shown in FIG. 2 as an example, the grease trap G partitions a rectangular box-shaped storage tank G1 with two partition plates G2 and G3 to form a water receiving chamber G6, an oil / water separation chamber G7, and a treated water chamber G8. One end is provided with an inflow pipe G4, and the other end is provided with a water intake pipe G5. An oil recovery box G11 is provided above the oil / water separation chamber G7. The partition plates G2 and G3 do not reach the bottom of the grease trap tank and are opened downward to form water passages G9 and G10. The intake pipe G5 has a lower end positioned near the bottom in the storage tank G1, and an upper end penetrating the upper peripheral wall of the storage tank G1 and protruding outside, and is connected to the drain pipe G12. The water intake at the end of the treated water supply pipe 2 of the separation apparatus A such as sewage according to the present invention is positioned above the treated water chamber G8 of the grease trap G.

An example of the separation apparatus A such as sewage of the present invention has the above-described specific form, and this operation mode will be described below.
(1) Supply of treated water into the container body First, water W is poured into the container body 1 as an initial preparation before performing the oil-water separation of the treated water OW. Further, the circulation pump 43 of the bubble supply device 4 is driven to supply a large number of bubbles B into the container body 1. Since the bubbles B have a low specific gravity, they rise above the container body 1. In addition, when it is difficult to pour water into the said container main body 1, you may make it supply the treated water OW in the grease trap G to the container main body 1 from the beginning. In addition, since the treated water OW is relatively left in the container main body 1 after the first time, the above-described water storage operation is unnecessary.

(2) Operation Mode of Bubble Supply Device The operation mode of the bubble supply device 4 will be described in more detail.
Air is supplied from the bubble generator 44 to the treated water OW sucked from the circulation intake pipe 40, and bubbles B are contained in the treated water OW. In addition, since the partition plate 17 is provided above the circulation intake pipe 40, it is possible to prevent the upper oil O and the bubbles B from being sucked. Furthermore, the treated water OW containing the bubbles B is vigorously stirred by the circulation pump 43, so that the bubbles B are finely and uniformly contained in the treated water OW. The treated water OW containing such fine bubbles B is ejected from the circulation supply pipe 42 above the partition plate 17 through the pressurized tank 45.

(3) Separation of treated water The treated water supply pump 3 is driven to supply treated water OW in the grease trap G into the introduction pipe 11 of the container body 1. The treated water OW ejected into the introduction pipe 11 is abutted against the bent portion of the introduction pipe 11 and its direction is changed, and the flow becomes slightly gentle and is drained into the container body 1 outside the introduction pipe 11. Go. At this time, since the flow of the treated water OW is generated in the introduction pipe 11, most of the bubbles B floating from below are sucked into the introduction pipe 11. Then, the oil O of the treated water OW is adsorbed by the bubbles B and rises together with the bubbles B, and accumulates on the liquid surface above the upper separation / recovery chamber R. In particular, since the upper separation / recovery chamber R is a concavity on the top of the container body 1, an oil layer is formed thick.
The liquid level in the upper separation / recovery chamber R is adjusted by adjusting the height of the overflow pipe 13, and the level adjustment pipe 16a is moved up and down by rotating the level adjustment handle 16 to adjust the overflow pipe. Adjust the length of 13. The still water W overflowing from the upper end of the level adjusting pipe 13 a to the water-covering receptacle 14 is returned to the grease trap G through the return pipe 15.

(4) Discharge of the separated oil The oil O accumulated in the upper part of the upper separation / recovery chamber R overflows from the separated product discharge port 1a and is fed into the oil storage tank 6 through the separated product discharge pipe 5. . And the oil O discharged | emitted by the oil storage tank 6 is what the further contained water | moisture content isolate | separates naturally, and the water W collected at the oil storage tank 6 bottom part is taken out from the intake pipe 60, and is drained. .

It is a perspective view which shows the container main body in separation apparatuses, such as sewage, of this invention. It is a vertical side view which shows separation apparatuses, such as sewage, of this invention. It is a vertical side view which shows a container main body same as the above. It is AA sectional drawing and BB sectional drawing in FIG. It is a perspective view which shows the other 2 types of Example of a partition plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container body 1a Separator discharge port 2 Treated water supply pipe 2a Open / close valve 2b Branch pipe 3 Treated water supply pump 4 Bubble supply device 5 Separator discharge pipe 6 Oil storage tank 10 Upper lid 11 Introducing pipe 12 Discharge pipe 12a Open / close valve 13 Overflow Pipe 13a Level adjustment pipe 14 Water-covered receiver 15 Return pipe 16 Level adjustment handle 17 Partition plate 17a Communication port 18 Support leg 40 Circulation intake pipe 41 Opening and closing valve 42 Circulation supply pipe 43 Circulation pump 44 Bubble generator 45 Pressure tank 60 Intake pipe 61A Drain pipe 61B Drain pipe 62 Open / close valve A Separator for sewage, etc. B Bubble G Glystrap G1 Reservoir G2 Partition plate G3 Partition plate G4 Inflow pipe G5 Intake pipe G6 Receiving chamber G7 Treated water separation chamber G8 Treated water chamber G9 Water passage G10 Waterway G11 Oil recovery box G12 Drain pipe R Upper separation recovery S Sewer OW treated water O oil W water

Claims (5)

  A container body, a treated water supply pipe for supplying treated water such as sewage into the container body, and a bubble supply device for generating bubbles in the container body, wherein the treated water is more than water and water. In the apparatus for separating the light specific gravity composition, the container body has a bottomed shape and at least an upper concavity, and this portion serves as an upper separation / recovery chamber. On the side, a partition plate having a communication port while partitioning the lower part of the container main body and the upper part thereof is provided, and a circulating water intake pipe of the bubble supply device for taking treated water is disposed below the partition plate, On the other hand, a sewage characterized in that a circulating supply pipe for supplying treated water containing bubbles generated by the bubble supply device is arranged above the partition plate, and further, the treated water supply pipe is arranged thereabove. Etc. Separation device.   The sewage or the like according to claim 1, wherein a treated water introduction tube having an inner diameter larger than the outer diameter of the treated water supply pipe is provided in a fitted state at a tip of the treated water supply pipe. Separation equipment.   3. The separator for wastewater or the like according to claim 2, wherein the introduction tube is formed in an elbow shape having one end opened upward.   The apparatus for separating sewage or the like according to claim 1, 2 or 3, wherein a discharge pipe for discharging light specific gravity separated and floated is connected to an upper portion of the container body.   An overflow pipe is connected to the peripheral wall of the container body, and a level adjustment pipe that allows the length to be adjusted is connected to the tip of the overflow pipe. 3. Separation device such as sewage according to 3 or 4.

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