JP2009160549A - Sewage treating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sewage treating apparatus which is easy in maintenance and operation, which requires no periodical operation of removing solid oil and fat components and keeps drains at an effluent standard or lower by decomposing the oil and fat components, thereby enabling various drains to discharge to the sewers as they are. <P>SOLUTION: The apparatus possesses an air feed means 26 agitating the various drains by feeding air to the various drains stored in a storing vessel provided with a taking-in part 3 and a feeding part 5 for discharging the various drains to the outside, and a circulation device 28 circulating the various drains stored in the storing vessel. The air feed means is provided with a cylindrical body for introducing air which temporarily stores compressed air fed from a compressed air feed source and discharging compressed air from a plurality of discharge openings. The circulation device 28 is provided with a cylindrical body for circulating water which makes the various drains pass through and sends the various drains to the upstream side of the storing vessel. The inside of at least either of the cylindrical body for introducing air and the cylindrical body for circulating water houses a plurality of permanent magnets. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  For example, the present invention relates to a sewage treatment apparatus that can discharge miscellaneous wastewater containing fat and oil components generated in a kitchen or the like into a sewage pipe as it is in accordance with a sewage discharge standard while being accommodated in a storage tank and circulated.

  For example, miscellaneous wastewater generated in kitchens and food processing factories contains many organic substances and oils and fats. In addition to these food-related matters, for example, miscellaneous wastewater discharged from factories often contains organic substances and oil and fat components.

  Such miscellaneous wastewater cannot be discharged into a sewer pipe as it is, so large debris is removed through a strainer and a sorter called a grease interceptor is installed in the storage tank. Thus, the oil and fat component is separated from the water.

  Conventionally known grease interceptors include those disclosed in Non-Patent Document 1 as shown in FIG. This grease interceptor 2 has a plurality of partition plates 4, 6, 8, which have different effective heights in the vertical direction in a storage tank 3 having an inflow side opening A for miscellaneous wastewater and an outflow side opening B for primary treated water. 10, 12 etc. are arranged, and relatively clean water is guided below these partition plates, and is discharged out of the tank through the outflow side opening B installed at the most downstream side.

  On the other hand, since oil and fat components and the like are separated above the standard water level surface, the floating oil and fat components are generally sucked up by a vacuum device and processed by an industrial waste supplier.

  In business establishments with kitchen facilities such as restaurants, side dishes shops, restaurants, hotels, lunch centers, and employee cafeterias, grease interceptors that temporarily store oil and fat components and residues associated with cooking and dishwashing. Is required. And it is discharged | emitted to the sewer according to the sewage exclusion reference value prescribed | regulated by the law through the grease interceptor.

For example, according to the sewage exclusion standard in Tokyo's 23 wards, the normal hexane extract of animal and vegetable oils is defined as 30 mm / liter or less, and the biochemical oxygen demand (BOD) is defined as less than 600 mg / liter.
Japan Air Conditioning and Sanitary Engineering Society, edited and written by “Grease Interceptor (issued July 30, 1999), page 2.

  By the way, when the grease interceptor 2 as described above is installed in a food-related facility or the like, it is necessary to periodically collect and remove residues such as meat and vegetables and oil components collected in the storage tank 3. Therefore, sufficient attention was required for its maintenance and management, and the collection work was laborious. In addition, in facilities where a large amount of miscellaneous wastewater is generated, it is necessary to suck up oil components every few days.

  In order to make full use of the function of the grease interceptor 2, maintenance management such as cleaning the cage, removing grease, cleaning the inside of the tank, and cleaning the trap is an indispensable operation. However, the current situation is that they tend to give off bad odors or become unsanitary.

  In view of such circumstances, the present invention is easy to maintain and maintain, and does not require the work of periodically removing solidified oil and fat components, etc. The purpose of the present invention is to provide a sewage treatment apparatus that makes it possible to discharge sewage directly into a sewer or the like, and does not give off a bad odor.

To achieve the above object, the present invention provides:
A storage tank having an intake part for taking in miscellaneous wastewater and a delivery part for discharging the misted wastewater to the outside;
A partition plate that is defined in a vertical direction by defining the inside of the storage tank into a plurality of small rooms,
Air supply means for supplying air to miscellaneous wastewater stored in the storage tank and stirring the miscellaneous wastewater;
A circulating device for circulating miscellaneous wastewater stored in the storage tank,
The air supply means is provided with an air introduction cylinder for temporarily storing compressed air supplied from a compressed air supply source and discharging the compressed air from a plurality of discharge ports.
The circulation device includes a water circulation cylinder that passes miscellaneous wastewater and delivers the miscellaneous wastewater to the upstream side of the storage tank.
A plurality of permanent magnets are accommodated in at least one of the air introduction cylinder and the water circulation cylinder.

  With such a configuration, miscellaneous wastewater is agitated by supplying compressed air, so that the oil and fat components can be turbid and emulsified in the wastewater, and microorganisms in the miscellaneous wastewater can be propagated. it can. Thereby, decomposition | disassembly to the water and carbon dioxide of fats and oils component is accelerated | stimulated. Moreover, an oily deposit can be melt | dissolved intermittently and water quality can be improved.

  Furthermore, due to the action of the magnet, Lorentz force is generated in the storage tank in relation to the magnetic field, and the stored miscellaneous wastewater flowing at a constant flow velocity is vibrated. The vitality of water such as the dissolving power, detergency, and sterilizing action of can be recovered. In addition, sewage containing oil, salt and the like is electrolyzed by the action of the magnet.

Here, it is preferable that the permanent magnets are accommodated at predetermined intervals so that NS, SN, NS and the magnetic poles repel each other.
Thus, the processing capability of miscellaneous wastewater improved by arrange | positioning in the aspect which magnetic field lines repel each other. This is thought to be due to the fact that the repulsive magnetic force acts outward and the cluster fragmentation has advanced.

  On the other hand, in this invention, it is preferable that the exit direction of the said cylinder for water circulation is distribute | arranged facing the north of a ground axis. As a result, the wastewater treatment capacity was improved. This is presumably because the strength of the magnetic force and the direction of current flow were adjusted.

In the present invention, the miscellaneous wastewater can be preferably applied to miscellaneous wastewater containing an oil and fat component.
Thus, if applied to miscellaneous wastewater containing oil and fat components, it can be effectively used in kitchens, food processing factories, factories and the like that have been extremely difficult to properly treat oil and fat components. Moreover, the capital investment is inexpensive and the maintenance work can be reduced as much as possible.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a sewage treatment apparatus according to an embodiment of the present invention.
The sewage treatment apparatus 20 is installed in a kitchen where miscellaneous wastewater is discharged or in a site such as a food processing factory.

  The sewage treatment apparatus 20 includes a storage tank 22 in which miscellaneous wastewater is continuously stored, a plurality of partition plates 24 that define the inside of the storage tank 22 into a plurality of small rooms, and compressed air in the storage tank 22. The air supply means 26 to supply and the circulation apparatus 28 which circulates the miscellaneous wastewater stored in the storage tank 22 are provided.

  Although the storage tank 22 is comprised from the tank main body 22a and the cover body 22b, and the tank main body 22a is formed from resin, concrete, etc., such as FRP, the material is not specifically limited. The storage tank 22 is provided with an intake portion 3 into which miscellaneous wastewater is taken and a delivery portion 5 that discharges miscellaneous wastewater to the outside. In addition, a manhole 7 in which miscellaneous wastewater such as a kitchen is accumulated is installed upstream of the intake unit 3, and miscellaneous wastewater is sequentially supplied into the tank body 22 a through the manhole 7.

On the other hand, the lid 22b is formed from a load-bearing steel plate or the like.
The plurality of partition plates 24 are arranged at positions where the lower ends 24a thereof are higher than the bottom surface of the tank body 22a, whereby the tank body 22a can be circulated between the small rooms A, B, C, and D.

  The air supply means 26 includes a blower 30 and an air supply pipe 32 connected to the blower 30. The air supply pipe 32 includes a blower pipe 31 mainly disposed outside the tank, and a linear pipe 32a made of vinyl chloride that is horizontally piped along both long side walls of the tank body 22a in the tank body 22a. 32b, a plurality of lower branch pipes 32c, 32c branched downward from the straight pipes 32a, 32b, and a plurality of connection pipes 32d for connecting the lower branch pipes 32c, 32c on both sides along the long side wall. , 32d,... And in the middle of these connection piping 32d, the cylinder 34 for compressed air introduction into which compressed air is each introduced is installed up and down. In this compressed air introducing cylinder 34, a large number of fine holes are formed, and as shown in FIG. 4, a magnetic device 50 composed of a large number of permanent magnets is incorporated. The magnetic device 50 will be described later.

  On the other hand, the circulator 28 for miscellaneous wastewater is used to repeatedly circulate miscellaneous wastewater in the tank body 22a using the submersible pump 35, and this promotes the decomposition of the oil and fat components in the miscellaneous wastewater. The circulation device 28 includes a submersible pump 35 and a piping system 36 that sends out water sucked by the submersible pump 35. The piping system 36 is provided with a strainer 37 that removes dust and the like, and a water circulation cylinder 40 that serves as a water outlet into the tank body 22a. Also in the water circulation cylinder 40, a magnetic device 50 made of a permanent magnet is housed in the same manner as the air introduction cylinder 34.

Hereinafter, a magnetic device 50 composed of a plurality of permanent magnets housed in the air introduction cylinder 34 and the water circulation cylinder 40 will be described with reference to FIG.
Since the magnetic device 50 accommodated in the air introduction cylinder 34 and the water circulation cylinder 40 is formed in substantially the same manner, the magnetic apparatus 50 configured in the water circulation cylinder 40 is described below. explain.

  First, the water circulation cylinder 40 is formed from a magnetic stainless steel plate such as SUS304. In addition, a stainless steel shaft 54 is accommodated in the cylindrical body 40, and a plurality of permanent magnets 56 are attached around the shaft 54 at predetermined intervals.

Further, the permanent magnet 56 is formed in a disc shape, and the gauss of one magnet is preferably 1000 gauss or more.
Further, a stainless steel collar 58 is interposed between one magnet 56 and the adjacent magnet 56, and in this embodiment, for example, a permanent magnet 56 of 40φ is SN, NS, SN, NS by these collars 58. Are arranged at intervals of 25 mm so as to repel each other.

Further, a double nut 60 is installed on the side of the outermost magnet 56, and the fixing and removal of the magnet 56 are prevented by these nuts 60.
The magnetic device 50 thus formed is accommodated inside the compressed air introducing cylinder 34 and the water circulation cylinder 40. The water circulation cylinder 40 of the circulation device 28 for circulating miscellaneous wastewater may be formed of steel instead of stainless steel. However, since water circulates and flows inside the water circulation cylinder 40, a cover member made of, for example, vinyl chloride can be attached to the outside of the water circulation cylinder 40 in order to prevent oxidation.

  In the present embodiment, the magnetic water circulation cylinder 40 pole of the permanent magnet 56 of the magnetic device 50 is installed so as to repel each other with SN, NS, SN, but installed so as to attract each other with SN, SN, SN. May be.

  In addition, it is preferable that the angle of the water circulation cylinder 40 is adjustable with respect to the attachment portion of the piping system 36, and the outlet of the cylinder 40 is attached in the direction of the ground axis (that is, the north-south direction). It was confirmed that if the water circulation cylinder 40 is attached in such a direction, the decomposition of the oil and fat component is promoted.

In addition, if there is room in the installation space in the storage tank main body 22a, it is preferable that the air introduction cylinder 34 is also directed in the direction of the ground axis.
The magnetic device 50 accommodated in the air introduction cylinder 34 and the water circulation cylinder 40 is configured as described above. However, the air introduction cylinder 34 needs to discharge compressed air into the tank. Therefore, in addition to the above configuration, the cylinder 34 is provided with a large number of small holes. Moreover, when providing a cover member on the outside, it is necessary to provide air holes in the cover member.

Although the sewage treatment apparatus according to the present embodiment is configured as described above, the operation will be described below.
Now, miscellaneous wastewater containing fat and oil components generated in a kitchen or the like is flowing into the intake portion 3 of the storage tank 22 through the manhole 7. In the storage tank 22, miscellaneous wastewater is circulated in the tank body 22 a by the circulation device 28, and compressed air is sent from the blower 30 into the tank body 22 a by driving the air supply means 26. And the compressed air is diverged from the upper layer part and lower layer part of the tank main body 22a through the micro hole provided in the cylinder 40 for compressed air introduction.

In this state, in the tank body 22a, the fragmentation of the water molecule clusters is promoted by releasing the compressed air.
Further, the supply of compressed air is considered to cause an increase in pH (alkalization) in addition to stirring, and as a result, create an environment in which useful bacteria can easily grow.

Further, the sewage containing oil, salt, etc. is electrolyzed by the magnetic devices 50 in the air supply means 26 and the water circulation device 28.
Furthermore, in the present invention, the action of the magnetic device 50 is considered to act on water having a constant flow rate of magnetic force to refine the molecular clusters and exert a purification action.

As mentioned above, although one Example of this invention was described, this invention is not limited to the said Example at all.
For example, in the above-described embodiment, the magnetic device 50 using permanent magnets is configured in both the air introduction cylinder 34 and the water circulation cylinder 40, but the magnetic apparatus 50 may be configured in either one. For example, in a facility with a small amount of oil and fat components, the magnetic device 50 in the air introduction cylinder 34 can be omitted.

FIG. 1 is a plan view of a sewage treatment apparatus according to an embodiment of the present invention. FIG. 2 is a front view of the sewage treatment apparatus shown in FIG. FIG. 3 is a right side view of the sewage treatment apparatus shown in FIG. FIG. 4 is a cross-sectional view of the magnetic device employed in the sewage treatment apparatus shown in FIG. FIG. 5 is a schematic view of a conventional sewage treatment apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Intake part 5 Delivery part 7 Manhole 20 Sewage treatment apparatus 22 Storage tank 22a Tank main body 22b Cover body 22a Tank main body 24 Partition plate 26 Air supply means 28 Circulator 30 Blower 31 Blower pipe 32 Air supply pipe 32a Linear pipe 32c Lower branch Piping 32d Connecting piping 34 Compressed air introduction cylinder 35 Submersible pump 36 Piping system 37 Strainer 40 Water circulation cylinder 50 Magnetic device 56 Magnet 58 Color A, B, C, D Small chamber

Claims (4)

A storage tank having an intake part for taking in miscellaneous wastewater and a delivery part for discharging the misted wastewater to the outside;
A partition plate that is defined in a vertical direction by defining the inside of the storage tank into a plurality of small rooms,
Air supply means for supplying air to miscellaneous wastewater stored in the storage tank and stirring the miscellaneous wastewater;
A circulating device for circulating miscellaneous wastewater stored in the storage tank,
The air supply means is provided with an air introduction cylinder for temporarily storing compressed air supplied from a compressed air supply source and discharging the compressed air from a plurality of discharge ports.
The circulation device includes a water circulation cylinder that passes miscellaneous wastewater and delivers the miscellaneous wastewater to the upstream side of the storage tank.
A sewage treatment apparatus, wherein a plurality of permanent magnets are accommodated in at least one of the air introduction cylinder and the water circulation cylinder.   The sewage treatment apparatus according to claim 1, wherein the permanent magnets are accommodated at predetermined intervals in a manner in which NS, SN, NS and magnetic poles repel each other.   The sewage treatment apparatus according to claim 1, wherein an outlet direction of the water circulation cylinder is arranged facing north of the earth axis.   The sewage treatment apparatus according to claim 1, wherein the miscellaneous wastewater is wastewater containing an oil and fat component.

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