JP3220579U - Aeration equipment and oil-containing wastewater treatment equipment - Google Patents

Abstract

The present invention provides an aeration apparatus and an oil and fat-containing wastewater treatment apparatus that decompose oil and fat in wastewater and that can be stably operated for a long period of time without being blocked. An aeration apparatus includes a header having a rectangular cross section for supplying air to a nozzle, a plurality of nozzles attached obliquely downward to two adjacent wall surfaces of the header, The nozzle 20 has a tapered tip portion 22 both in appearance and inside, and is provided with an air ejection hole 25 communicating with the inside of the tip portion 22. [Selection] Figure 1

Description

  The present invention relates to a fat and oil-containing wastewater treatment apparatus that decomposes oil and fat in wastewater such as fat and oil separated and collected by an aeration apparatus and a grease trap.

  A grease trap is a device that floats and separates oil and fat contained in wastewater by using a difference in specific gravity, and is installed and used in commercial kitchens such as hotels, restaurants, and supermarkets. When using a grease trap, maintenance such as removing the oil and fat that has been separated and stored is necessary, but in many cases, it is left for a long period of time. If the left fat and oil accumulates and flows into the downstream pipe, the original function of the grease trap is not fulfilled, and problems such as blocking of the pipe occur.

  On the other hand, there is a method of decomposing in the grease trap instead of collecting the oil separated and collected in the grease trap. For example, there are a method for decomposing oil and fat using yeast (for example, see Patent Document 1) and a method for decomposing oil and fat by supplying bacteria and aeration (for example, see Patent Document 2).

JP 2013-22586 A Utility Model Registration No. 3165072

  In addition to the above-mentioned patent documents, a technique is disclosed in which an aeration apparatus is installed in a grease trap and the separated and recovered oil and fat are decomposed. When an aeration apparatus is installed in a grease trap and chemicals are added to decompose oil and fat, blockage of an air ejection nozzle (hereinafter referred to as a nozzle) or an air ejection hole of the aeration apparatus becomes a problem.

  Although the nozzle of the aeration apparatus and the blockage of the air ejection hole may occur even during continuous operation, they are likely to occur when starting and stopping are repeated. When aeration is stopped, wastewater flows back into the nozzle, and even if restarted, the backflowed wastewater is not discharged, and as a result, aeration may not be performed. In addition, when the aeration is stopped, foreign matter in the drainage may be clogged in the nozzle or the air ejection hole.

  In the case of a device that installs an aeration device in the grease trap and decomposes oil and fat by adding chemicals, the aeration device operates at night when work in the kitchen is completed, and often stops during the day. Furthermore, since the oil and fat content and the solid content are contained in the waste water, the nozzle and the air ejection hole are easily blocked. However, the conventional aeration apparatus does not particularly take into consideration the blockage of the nozzles and the air ejection holes.

  An object of the present invention is to provide an aeration apparatus that is difficult to block and that can be stably operated for a long period of time, and an oil-containing wastewater treatment apparatus that decomposes oil and fat in wastewater.

  The present invention includes a header having a rectangular cross section for supplying air to the nozzles, a plurality of nozzles mounted obliquely downward on two adjacent wall surfaces of the header, and a support base for supporting the header. The nozzle is an aeration apparatus characterized in that both the external appearance and the inside have a tapered tip portion, and the tip portion is provided with an air ejection hole communicating with the inside.

  In the aeration apparatus of the present invention, the nozzle is detachably attached to the header.

  In the aeration apparatus of the present invention, the nozzle is characterized in that the end surface of the base end portion is flush with the inner wall surface of the header.

  The aeration apparatus according to the present invention is characterized in that the header can change an attachment angle with respect to the support base.

  The present invention includes the aeration device and an air / drug supply device, the air / drug supply device supplying an air pump for supplying air to the aeration device, an oil and fat decomposing agent supply device, the air pump, A fat and oil-containing wastewater treatment apparatus comprising: a control device that starts and stops the fat and oil decomposing agent supply device at a predetermined time.

  The oil-and-fat-containing wastewater treatment device of the present invention is stored in the grease trap in a state where the fat and oil decomposing agent contains an enzyme, the aeration device is installed in the grease trap, and the inflow of wastewater into the grease trap is stopped. The drained wastewater is aerated, and the oil and fat is decomposed with the oil and fat decomposing agent.

  According to the present invention, it is possible to provide an aeration apparatus and an oil-and-fat-containing wastewater treatment apparatus that decomposes oil and fat in wastewater that are difficult to block and can be stably operated for a long period of time.

It is the perspective view of the aeration apparatus 1 of this invention, and the half sectional view of the nozzle 20. FIG. FIG. 2 is a side view of the aeration apparatus 1 of FIG. 1 and a partial cross-sectional view showing a mounting procedure of a nozzle 20 to a header 10. It is a block diagram of the oil-and-fat containing waste water treatment equipment 100 of this invention. It is a figure which shows a mode that the fat-and-oils containing waste water treatment apparatus 100 of FIG. 3 was applied to decomposition | disassembly of the fats and oils isolate | separated and collect | recovered with the grease trap 200.

  1A is a perspective view of an aeration apparatus 1 according to the present invention, and FIG. 1B is a half sectional view of a nozzle 20. 2A is a side view of the aeration apparatus 1, and FIG. 2B is a partial cross-sectional view showing a procedure for removing the nozzle 20 from the header 10.

  The aeration apparatus 1 of the present invention includes a header (mother pipe) 10, an air ejection nozzle (hereinafter referred to as a nozzle) 20 attached to the header 10, and a support base (pedestal) 31 that supports the header 10. The

  The header 10 is a square pipe having a square cross section, and both ends 12 are closed. The header 10 of this embodiment has a square cross section, but the cross section may be a rectangle or a rhombus. If necessary, it may be a square pipe having a square cross section.

  In the aeration apparatus 1 of the present embodiment, the nozzle 20 is attached to each of the left and right wall surfaces 14 on the lower side of the header 10 in a side view (see FIG. 2A). The mounting position of the nozzle 20 with respect to the wall surface 14 is near the lower side of the wall surface 14 (see FIG. 2B). When the nozzle 20 is mounted to the left and right downward with respect to the header 10, the square pipe is easier to install than the round pipe. In addition, when water flows back into the header 10 through the nozzle 20, water is less likely to remain in the header 10 in the square pipe than in the round pipe.

  The size of the header 10 is not particularly limited. The material of the header 10 is not particularly limited. When the aeration apparatus 1 is used as aeration for decomposing oil and fat separated and collected by a grease trap, it is preferably made of stainless steel.

  A joint 18 for connecting to the air supply hose 112 is attached to the header 10. The two joints 18 are pipe joints in which a hose can be attached and detached with one touch, and are attached to the left and right wall surfaces 16 so as to be positioned at both ends when the left and right wall surfaces 16 are viewed in the longitudinal direction (FIG. 1A). FIG. 2 (A)). The wall surface 14 is provided with a female screw 15 for attaching the nozzle 10 (see FIG. 2B).

  The nozzle 20 includes a main body portion 21 and an attachment portion 26 provided at the base end of the main body portion 21. The main body 21 has a cylindrical shape and includes a tapered tip portion 22 at the tip. As for the external shape of the front-end | tip part 22, the side surface is a taper shape and the end surface 24 is a plane. The inside 23 of the tip 22 is also tapered, and the inner diameter is reduced toward the tip. The distal end portion 22 is provided with a linear through-hole 25 connected from the end surface 24 to the inside. This through-hole 25 becomes an air ejection hole (see FIG. 1B).

  Thus, by using the air ejection hole of the nozzle 20 as the linear through hole 25 having a small diameter, the nozzle is not easily blocked even when the aeration apparatus 1 is used for aeration of drainage containing solids. Further, since the nozzle 20 is tapered both inside and outside, even if the drainage flows backward and enters the nozzle 20 or the header 10, it can be smoothly discharged without being blocked.

  The mounting portion 26 is also cylindrical, and a male screw 27 is provided on the outer peripheral surface to be screwed into the female screw 15 provided on the header 10. The outer diameter of the attachment portion 26 is smaller than the outer diameter of the main body portion 21, and the boundary between the main body portion 21 and the attachment portion 26 is a stepped portion 29.

  The nozzle 20 is fixed by being screwed into the female screw 15 of the header 10 by fitting an O-ring 30 into the stepped portion 29. At this time, it is preferable that the end surface 28 of the mounting portion 26 is flush with the inner wall surface 13 of the header 10 (see FIG. 2B). When the mounting portion 26 protrudes from the inner wall surface 13 of the header 10, when drainage flows backward, solid content tends to accumulate around the protruding portion, and the nozzle 20 is likely to be blocked due to this.

  As an example of the size of the nozzle 20, the length of the main body 21 is 50 mm, the diameter is 9 mmφ, the length of the tip 22 is 4 mm, and the diameter of the through hole 25 is 0.7 mmφ. The nozzle 20 having such dimensions is preferable because it is difficult to close. In the aeration apparatus 1 of the present embodiment, five nozzles 20 are attached to the left and right, respectively, but the number of nozzles 20 is not particularly limited. The material of the nozzle 20 is not particularly limited. When the aeration apparatus 1 is used as aeration for decomposing oil and fat separated and collected by a grease trap, it is preferably made of stainless steel.

  The support base 31 includes a base plate 32 and a pair of support arms 33 erected in the vicinity of the end of the base plate 32. The base plate 32 of the present embodiment has a length slightly longer than the length of the header 10 and a width that is substantially the same as the distance between the tip portions 22 of the left and right nozzles 20 in a side view, but is not limited thereto. It is sufficient that the header 10 can be stably supported.

  The support arm 33 is provided with an insertion hole through which the mounting bolt 40 can be inserted, and the header 10 is fixed to the support arm 33 via the mounting bolt 40. The mounting angle of the header 10 with respect to the support arm 33 can be changed. Since the mounting angle of the header 10 with respect to the support arm 33 can be changed, the nozzle 20 can be used in any direction depending on the use destination, and is excellent in usability.

  3A is a configuration diagram of the oil-and-fat-containing wastewater treatment apparatus 100 according to the present invention, and FIG. 3B is a diagram illustrating an internal state of the control panel 142. The same components as those of the aeration apparatus 1 of the present invention shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted.

  The oil and fat-containing wastewater treatment apparatus 100 is an apparatus that decomposes oil and fat in the wastewater with an oil and fat decomposing agent and aeration, and includes the aeration apparatus 1 shown in FIGS. The The air / drug supply apparatus 101 includes an air pump 110 that supplies air to the aeration apparatus 1, an oil and fat decomposing agent supply apparatus 120, and a control device that starts and stops the air pump 110 and the oil and fat decomposing agent supply apparatus 120 at a predetermined time. 130, a gantry 140 and a control panel 142.

  The air pump 110 is a pump that sends air for aeration to the aeration apparatus 1, and is connected to a joint 18 attached to the header 10 of the aeration apparatus 1 via an air supply hose 112. An electromagnetic valve 114 is interposed in the middle of the air supply hose 112, and the control device 130 opens and closes the electromagnetic valve 114.

  The fat and oil decomposing agent supply apparatus 120 is an apparatus that supplies an oil and fat decomposing agent that decomposes fat and oil in the waste water. The fat and oil degrading agent is an aqueous solution containing an enzyme, and the fat and oil degrading agent supply device 120 includes a storage container 122 for storing the fat and oil degrading agent, a constant supply pump 124, and an oil and fat degrading agent supply hose 126. The enzyme used here decomposes fats and oils in the waste water, and unlike surfactants and dispersants, it does not recombine even if the decomposed fats and oils pass for a long time.

  The control device 130 includes a timer 134 in addition to the main switch 132, starts and stops the air pump 110 and the metering supply pump 124 at a set time or time, and operates the electromagnetic valve 114.

  The air pump 110 is installed in the lower part of the gantry 140, and the fat and oil decomposing agent supply device 120 and the control device 130 are accommodated in a control panel 142 with an open / close door provided in the upper part of the gantry 140. In this manner, by incorporating the air pump 110, the oil and fat decomposing agent supply device 120, and the control device 130 into one pedestal 140, it is possible to make it compact and easy to move and install.

  Further, the supply of the oil decomposing agent can be stabilized by arranging the storage container 122 at a high position. The control panel 142 may be provided with a window through which the amount of liquid in the storage container 122 can be visually recognized, and a supply port for supplying the oil decomposing agent into the storage container 122. This improves usability.

  The usage example of the oil-and-fat containing waste water treatment apparatus 100 is shown using FIG. 4A and 4B are views showing a state in which the oil-and-fat-containing wastewater treatment apparatus 100 is applied to the decomposition of the oil and fat separated and collected by the grease trap 200, where FIG. 4A is a plan view and FIG. 4B is a front view. Here, the grease trap 200 is a grease trap installed in the kitchen, and the waste water is kitchen waste water containing oil and fat. Kitchen drainage is not discharged at all during the night when the kitchen is closed.

  The grease trap 200 is installed under the floor, and kitchen drainage flows through the side groove 210. The grease trap 200 itself is a known grease trap, and a mesh-like bucket 202 for removing solids on the inlet side is formed with an oil / water separation chamber 206 formed by two partition plates 204 at the center, and a trap 208 on the outlet side. Is provided.

  In the fat and oil-containing wastewater treatment apparatus 100, the aeration apparatus 1 is installed at the bottom near the inlet side of the oil / water separation chamber 206 in order to decompose the fat and oil separated and recovered in the oil / water separation chamber 206. Since the aeration apparatus 1 is stabilized by its own weight only by being submerged in the oil / water separation chamber 206, it is not particularly necessary to fix the aeration apparatus 1, but it may naturally be fixed using a fixing jig or the like. The air / medicine supply device 101 is installed near the grease trap 200 in an unobstructed place, and the tip of the oil and fat decomposing agent supply hose 126 is put into the drainage of the oil / water separation chamber 206.

  The operation of the oil and fat-containing wastewater treatment apparatus 100 will be described. In the time zone when the kitchen wastewater is injected, the oil and fat-containing wastewater treatment apparatus 100 is completely stopped, and the grease trap 200 removes solids in the wastewater and separates and collects the oil and fat as usual. The oil-containing wastewater treatment apparatus 100 operates in a state where the inflow of kitchen wastewater into the grease trap 200 is completely stopped. Specifically, a predetermined amount of the oil and fat decomposing agent and aeration air are supplied from 1 hour after the completion of the kitchen work to 1 hour before the start of the kitchen work.

  The fats and oils in the oil / water separation chamber 206 are completely decomposed by the action of enzymes and aeration. Since the supply amount of the fat and oil decomposing agent is about 1/2000 of the drainage amount of the oil / water separation chamber 206, the drainage amount hardly increases.

  As shown in the above embodiment, the aeration apparatus according to the present invention includes a header having a quadrangular cross section, and further includes an air ejection nozzle having an air ejection hole provided in a tapered tip portion both in appearance and inside. The nozzle is difficult to block and stable operation over a long period of time is possible. In addition, the air ejection nozzle can be attached to and detached from the header, and the end surface of the base end of the air ejection nozzle is flush with the inner wall surface of the header, so that it is more difficult to block and stable operation is possible for a long period of time. . Furthermore, it is easy to use by configuring the mounting angle of the header with respect to the support base to be changeable.

  In addition, the fat and oil-containing wastewater treatment apparatus according to the present invention is equipped with the aeration apparatus described above, and performs aeration with this, and is preferably used for decomposing oil and fat components separated and recovered by a grease trap in order to decompose fat and oil with an oil and fat decomposing agent. Can do. If an enzyme is used for the oil and fat decomposing agent, recombination of the oil and fat can be prevented. In addition, since the oil and fat-containing wastewater treatment apparatus according to the present invention includes a control device that is started and stopped at a predetermined time, the grease trap can be operated only at night when wastewater does not flow. Fats and oils can be decomposed while maintaining the original function.

  The aeration apparatus and the fat and oil-containing wastewater treatment apparatus according to the present invention are not limited to the above-described embodiment, and can be changed without changing the gist. Moreover, those skilled in the art will readily consider various changes and modifications within the obvious range after reviewing the present specification. Accordingly, such changes and modifications are to be construed as within the scope of the invention as defined by the appended claims.

DESCRIPTION OF SYMBOLS 1 Aeration apparatus 10 Header 13 Inner wall surface 14 Wall surface 15 Female screw 18 Joint 20 Nozzle 21 Main body part 22 Front-end | tip part 23 Interior 25 Through-hole (air ejection hole)
26 Mounting portion 27 Male screw 28 End surface 31 Support base 33 Support arm 40 Mounting bolt 100 Oil and fat-containing wastewater treatment device 101 Air / chemical supply device 110 Air pump 112 Air supply hose 114 Electromagnetic valve 120 Oil and fat decomposing agent supply device 122 Storage container 124 Determination Supply pump 126 Oil decomposing agent supply hose 130 Controller 134 Timer 140 Base 142 Control panel 200 Grease trap 206 Oil / water separation chamber

Claims (6)

A square header with a square cross section for supplying air to the nozzle,
A plurality of nozzles mounted obliquely downward on two adjacent wall surfaces of the header;
A support for supporting the header;
Have
The aeration apparatus according to claim 1, wherein the nozzle has a tapered tip part both inside and outside, and an air ejection hole communicating with the inside at the tip part.   The aeration apparatus according to claim 1, wherein the nozzle is detachably attached to the header.   The aeration apparatus according to claim 1, wherein an end surface of a base end portion of the nozzle is flush with an inner wall surface of the header.   The aeration apparatus according to claim 1, wherein an attachment angle of the header to the support base is changeable. An aeration apparatus according to any one of claims 1 to 4,
An air / drug supply device;
With
The air / drug supply device is:
An air pump for supplying air to the aeration device;
An oil decomposing agent supply device;
A control device for starting and stopping the air pump and the oil and fat decomposing agent supply device at a predetermined time;
An oil-containing wastewater treatment apparatus comprising: The fat and oil decomposer contains an enzyme,
The aeration device is installed in a grease trap;
The fats and oils according to claim 5, wherein the wastewater stored in the grease trap is aerated in a state where the inflow of the drainage into the grease trap is stopped, and the fats and oils are decomposed by the fat and oil decomposing agent. Contains wastewater treatment equipment.

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