JP2010184205A - Method and apparatus of treating waste liquid in grease trap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage treatment method and treatment apparatus for a grease trap that can be easily carried into a building and can perform oil / water separation efficiently.
SOLUTION: The drained liquid from which dust and dirt in the grease trap have been removed is pumped into a separation tank, the drained liquid is raised to separate oil and water, and the oil in the separated liquid is removed by a filter. The drained liquid from which oil was removed was returned into the grease strap or sent out of the grease strap. Remover that removes dirt and waste from the grease trap, a pump that pumps the drainage through the remover, a separation tank that separates the drained liquid that is sent from the pump, and drained from the separation tank The separation tank is equipped with a filter for filtering the separated drainage, and the separation tank is provided with two or more baffle plates, and the baffle plate is provided with a rising passage through which the drainage supplied can rise upward from below. It was supposed to be arranged diagonally upward on the inside.
[Selection] Figure 1

Description

  The invention of the present application removes dust from the drainage liquid in the grease trap installed in kitchens or outdoors such as lunch centers, restaurants, hotels, food processing plants, supermarkets, department stores, hospitals, public facilities, etc. The present invention relates to a liquid drainage treatment method and a grease trap wastewater treatment apparatus used for the treatment.

  In the grease trap, cooking oil, raw garbage, leftover food, chopsticks, toothpicks, paper scraps, vinyl scraps, sludge, and other dust from the kitchen are discarded. At present, in Japan, it is prohibited to discharge these drainage directly from the kitchen to the sewage and drainage pipes. Are disposed of.

  In order to process the drainage liquid in the grease trap, the present applicant has previously developed a greasetrap drainage treatment vehicle shown in Patent Document 1. As shown in FIG. 4, the drainage treatment vehicle is fed from the suction chamber A that sucks drainage from the grease trap G, the storage chamber B that stores the drainage sucked by the suction device A, and the storage chamber B. A solid-liquid separator C that separates the solid-liquid in the drainage, and a heater that heats the drainage by passing the drained liquid separated and sent by the solid-liquid separator C through the pipe and heating the pipe D and an oil / water separation tank E that separates oil discharged from the heater D into oil and moisture are mounted on a vehicle F, and the solid-liquid separator C is stored in the tank. The oil-water separation tank comprising: a transport body H that separates solids and waste liquid while transporting the drained liquid delivered from the chamber B; and a tank I that stores the drained liquid that falls during transport in the transport body H. Separation that separates oil and moisture in the drained liquid sent from the heater D into the E up and down It is intended and a J.

JP 2007-301498 A

  The drainage treatment vehicle described in Patent Document 1 has no particular problem in terms of drainage treatment, but has a problem that it is difficult to carry it into a building. An object of the present invention is to provide a grease trap drainage treatment method that is easy to carry in and move into a building, and that can perform solid-liquid separation and oil-water separation in drainage more efficiently and reliably than before. The object is to provide a drainage treatment apparatus.

  The drainage processing method of the grease trap according to the present invention removes dust and dirt of the drainage liquid in the greasetrap, pumps the drainage liquid, sends it to the separation tank, and raises the drainage liquid in the separation tank to rise. The oil is separated into oil and water, and the oil contained in the separated waste liquid is removed by a filter, and the drained liquid from which oil has been removed is filtered as it is or through another filter and returned to the grease trap. It is a method of sending out to the outside discharge pipe.

  The grease trap drainage processing apparatus of the present invention comprises a remover for removing dust and dirt of the drainage in the greasetrap, a pump for pumping the drainage through the remover, and a drainage sent from the pump A separation tank for separating oil and water; and a filter for filtering separated waste liquid discharged from the separation tank, wherein the separation tank has two or more baffle plates disposed therein, and the baffle plates are supplied with drainage liquid Is provided with an ascending passage capable of rising from below to above and arranged obliquely upward inward in the vertical direction. Below the separation tank of this drainage treatment device, it is possible to store the filtered wastewater filtered by the filter and the separated water separated by oil and water in the separation tank, and the filtered wastewater and separated moisture are filtered inside A receiving tank provided with a receiving tank filter can be arranged. Further, it is possible to provide a discharge passage for discharging the water separated from the oil and water inside the separation tank to the outside. Furthermore, the separation tank or the separation tank and the receiving tank of these waste treatment apparatuses can be mounted on a moving vehicle to be movable.

The grease trap drainage processing method of the present invention has the following effects.
1. Removes dust and dirt from the drainage liquid in the grease trap and pumps up the drainage fluid in the grease strap, facilitating subsequent processing.
2. The pumped-up drainage is raised and oil-water separation is performed during the rise, making oil-water separation easier.
3. Remove the oil in the separated drainage separated by oil and water with a filter, and then return the drained liquid to the grease trap to clean the inside of the grease strap. The exhaust pipe is clogged even if it is sent to the discharge pipe outside the grease strap. There is no such thing as pollution from drainage.

The grease trap drainage processing apparatus of the present invention has the following effects.
1. Since there is a remover that removes dust and dirt from the drainage in the grease trap, clogging of the pump due to dust and dirt in the drainage is eliminated, and the pumping of the drainage is easy and reliable. Can be pumped up.
2. Since there is a separation tank that separates the drained liquid fed from the pumping machine into oil and water, the drained liquid is fed into the tank and lifted, so that the oil and water are separated during the ascent.
3. Since there is a filter that filters the separated drainage discharged from the separation tank, the water from which oil has been further removed from the separated drainage is returned to the grease wrap or discharged outside the grease wrap, so Will be clean and the drainage will not be polluted and contribute to the destruction of the environment.
4). Two or more baffle plates are arranged inside the separation tank, and the baffle plates are arranged in the vertical direction by providing a rising passage through which the supplied drainage can rise upward from below. The oil and water separation efficiency is good because it easily rises and the drainage flow path becomes longer. In addition, since two or more baffle plates are arranged obliquely upward on the inside, it is difficult for the rise of drainage to be hindered, and dirt in the drainage is less likely to adhere to the baffle plate, making it difficult for the baffle plates to become dirty. .
5). Below the separation tank is a receiving tank that can store the filtered drained liquid filtered by the filter and the separated water separated by oil and water in the separating tank, and the receiving tank filters the filtered drained liquid and separated moisture. Since the tank filter is built in, the drained liquid that has exited the separation tank is further filtered and discharged, so that the inside of the grease trap is clean and the drained liquid does not contribute to pollution.
6). Since there is a discharge passage that discharges the water separated from the oil and water inside the separation tank, if the moisture in the separation tank is removed from the discharge passage, the separated water will not be filled in the separation tank. The oil and water can be separated continuously in the tank.
7). Since the separation tank or the separation tank and the receiving tank of the drainage treatment apparatus are mounted on the moving vehicle, the drainage treatment apparatus can be easily moved and can be easily carried into the building.

The perspective explanatory view showing an example of the grease trap drainage processing device of the present invention. The disassembled perspective view which shows an example of the pumping machine of the grease trap drainage processing apparatus of this invention. An example of the drainage processing method of this invention is shown, (a) is sectional drawing which shows a mode that the drainage liquid in grease trap is pumped in a separation tank, (b) shows a mode that the separated oil component is sent out to a filter Sectional drawing, (c) is sectional drawing which shows a mode that the isolate | separated water | moisture content is received and discharged | emitted to a tank. The perspective view which shows an example of the conventional grease trap drainage processing apparatus.

  Hereinafter, embodiments of the grease trap drainage processing method and grease trap drainage treatment apparatus of the present invention will be described. Prior to the embodiment of the grease trap drainage processing method, an example of an embodiment of the grease trap drainage treatment apparatus will be described with reference to FIGS.

(Embodiment of grease trap drainage processing apparatus)
The grease trap drainage processing apparatus of FIGS. 1 to 3 includes a remover 1 that removes dust and dirt of drainage, a pumping machine 2 that sucks and pumps the drainage in the greasetrap G, and oil in the drainage. The oil / water separation tank includes a separation tank 3 for separating water from water, a filter 4 for filtering the water separated from the oil / water in the separation tank 3, and a receiving tank 5 capable of storing the filtered water that has passed through the filter 4. 3 and the receiving tank 5 are mounted on a moving vehicle 6 and are movable.

  The removal tool 1 and the pump 2 are accommodated in a single case 7. The case 7 is made of a material that is not easily rusted, for example, made of stainless steel, and has a size that can be put into the drainage liquid of the grease strap G. A perforated plate (for example, punching metal or mesh) is used for the side plate 10 on the entrance side, a partition plate 11 is provided in the case 7, and a perforated plate (for example, punching metal or mesh) is also used for the partition plate 11. A filter housing chamber 12 is formed between the plates 10 and 11, and a pump housing chamber 13 is formed between the partition plate 11 and the side plates. The drainage passage hole 10a of the side plate 10 is sized so that raw garbage, uneaten food, chopsticks, toothpicks, paper scraps, vinyl scraps, sludge, etc. floating in the drainage liquid in the grease strap cannot pass. The number that the drainage liquid in the grease strap G can easily enter is good. The size of the hole 11a of the partition plate 11 is preferably such that the dust in the drainage in the filter storage chamber 12 is difficult to pass through, and the number of holes is such that the drainage in the filter storage chamber 12 easily enters the pumping machine storage chamber 13. Is good.

  A filter 8 is used for the removal tool 1, and a desired number (three in FIG. 2) of filters 8 are stacked horizontally and accommodated in the filter accommodation chamber 12. Since the filter 8 removes dust in the drained liquid that enters the filter housing chamber 12 and filters the drained liquid, the material, thickness, number, etc. of the filter 8 are appropriate for dust removal and drainage filtration. For example, a non-woven cloth or a fine cloth that easily adsorbs dust in the drained liquid is suitable as a material. When the thickness is about several millimeters to several centimeters, it is easy to put in and out of the filter housing chamber 12 and to be easily cleaned, which is convenient for handling. If the number of sheets is larger than one sheet, it is easy to remove dirt (cleaning), and it is convenient to use existing materials such as non-woven fabric. An existing or new filter other than the nonwoven fabric can be used for the filter 8.

  The pump 2 sucks the drainage liquid in the grease trap G into the filter storage chamber 12 and sends it into the separation tank 3 (pumps up). Submersible pumps, land pumps, and other various pumps can be used. . The pump 2 is housed in the pump housing chamber 13 of the case 7. The inlet side of the pumping machine 2 is covered with a perforated material (for example, punching metal) 15 so as to prevent dust and foreign matter from entering the pumping machine 2. The ceiling of the pumping machine storage chamber 13 is covered with the lid 14 after the pumping machine 2 is stored to close the pumping machine storage chamber 13, and the case 7 is submerged in the drainage liquid in the grease strap G. The drained liquid is prevented from entering the pumping machine storage unit 13 from above. The hose 9 drawn out from the pumping machine 2 passes through the lid 14 and is drawn into the separation tank 3.

  The separation tank 3 is for separating the drained liquid fed from the pumping machine 2 into oil and water (oil-water separation), and has a drainage inlet 16 at the lower part of the peripheral wall. The drainage liquid in the grease trap G pumped up by the pumping machine 2 is fed by the inserted hose 9.

  In the separation tank 3, a plurality of baffle plates 17 are provided in the vertical direction for promoting the separation of the oil content of the discharged liquid and the moisture. The baffle plate 17 is also made of a material that does not corrode easily. The width of the baffle plate 17 is about the same as the width of the separation tank 3, and the front-rear width is about two-thirds of the front-rear width of the separation tank 3 (FIGS. 3A to 3C). A drainage passage 18 is formed between the baffle plates 17 that are spaced apart vertically, and is disposed obliquely upward inward from the two opposing inner wall surfaces of the separation tank 3. With such a structure, the drained liquid taken into the separation tank 3 rises while meandering the drainage passage 18 between the baffle plates 17 from below in the separation tank 3, and the specific gravity is increased during this period. Oil that is lighter than water is on the top, and water with a higher specific gravity is on the bottom, and the oil is separated. In this case, since the baffle plate 17 is disposed obliquely upward as described above, the drainage easily rises and the oil / water separation is performed smoothly, and dust and dirt in the drainage are collected on the back surface of the baffle plate 17. It is difficult to adhere, and it is difficult to accumulate on the base portion 17 a of the baffle plate 17. The size, shape, material, and the like of the baffle plate 17 can be other than those described above.

  A vertically long filter 4 is disposed outside the separation tank 3 so that the oil separated during the ascending in the separation tank 3 flows out from the drain outlet 21 at the top of the separation tank 3 to the filter 4. is there. The filter 4 filters oil flowing from the drain outlet 21, and a filter material 4b is accommodated in the container 4a. The amount of the filter material 4b can be arbitrarily adjusted. The filter material 4b is preferably one that can remove dust in the oil and deodorize and decolorize the odor of the oil. Examples include coconut chips, activated carbon, charcoal, and coral. The coconut has sterilization / deodorization / cleaning action, so that not only oil removal / deodorization, but also drainage sterilization / cleaning effect can be expected, which is preferable in terms of hygiene. The drain outlet 21 has an open / close valve 22 that opens and closes the drain outlet 21 to control the outflow of the oil separated in the separation tank 3. A drainage outlet 23 is provided below the container 4 a of the filter 4, and the drainage that has passed through the filter 4 is discharged from the drainage outlet 23 to the outside.

  An upper moisture outlet 20 is provided slightly below the drainage outlet 21 of the separation tank 3. The upper moisture outlet 20 is for discharging the moisture separated in the separation tank 3 and pushed up to the upper part of the separation tank 3 to the outside of the separation tank 3, and the water flowing out from the upper moisture outlet 20 It flows into the connected upper moisture flow path 24. An opening / closing valve 25 is also provided at the upper moisture outlet 20 so as to control the outflow of moisture accumulated above the separation tank 3 to the upper moisture channel 24 by the opening / closing operation. It does not flow from the moisture outlet 20 into the upper moisture channel 24. The upper moisture outlet 20 can be provided on the other surface of the separation tank 3. In this case, the upper moisture channel 24 is also piped on the same surface as the upper moisture outlet 20.

  The oil / water separation tank 3 is provided with an intermediate water outlet 26 for discharging the water separated inside and collected in the intermediate portion in the height direction of the separation tank 3 to the outside of the separation tank 3. The water flowing out from the outlet 26 flows down the intermediate water discharge pipe 27. The intermediate water outlet 26 is disposed immediately above the baffle plate 17 at an intermediate position in the separation tank 3 so that the oil above the water flowing out from the intermediate water outlet 26 does not flow out. As shown in FIG. 1, the intermediate water discharge pipe 27 includes a connection portion 27a connected to the intermediate water outlet 26 of the separation tank 3, an upward pipe portion 27b raised from the connection portion 27a, and a lateral direction from the upward pipe portion 27b. A horizontal pipe portion 27c extending downward and a downward pipe portion 27d lowered from the horizontal pipe portion 27c. The intermediate water outlet 26, the connecting portion 27a, the upward pipe portion 27b, the horizontal pipe portion 27c, and the downward pipe portion 27d flow in this order. It is designed to be discharged outside. Thus, the drainage is once raised so that the oil in the intermediate portion in the separation tank 3 does not flow into the intermediate water discharge pipe 27. The intermediate water outlet 26 has an open / close valve (not shown), which opens and closes the intermediate water outlet 26 to control the outflow of moisture separated by the separation tank 3.

  The separation tank 3 is provided with a drain 28 at the bottom thereof so that the water accumulated in the lower part of the separation tank 3 can be discharged to the outside. The drain 28 is also provided with an opening / closing valve 29 so that the drainage of water below the separation tank 3 can be controlled by the opening / closing operation.

  The receiving tank 5 below the separation tank 3 is drained from the filter 4, drain 28, upper moisture flow path 24, and moisture discharged from the intermediate water discharge pipe 27 (hereinafter, these are collectively referred to as “primary treatment drainage”. It is a tank for saving. The receiving tank 5 has a box shape with an upper surface opening, and a receiving tank filter 30 is disposed therein. The receiving tank filter 30 may be the same as or different from the filter 8 in the case 7. The material, structure, arrangement, etc. of this filter can be arbitrarily selected. The primary processing waste liquid is sent into the receiving tank 5, passes through the receiving tank filter 30, and accumulates in the space below the receiving tank 5.

  In the lower part of the receiving tank 5, the drainage for returning the drainage liquid (hereinafter referred to as “secondary processing drainage liquid”) that has passed through the receiving tank filter 30 and accumulated in the lower space of the receiving tank 5 into the grease trap G. A liquid return path 31 is provided. The drainage return path 31 is also provided with an open / close valve 32 so that the discharge of the secondary treatment drainage can be controlled by the opening / closing operation.

  The grease trap waste disposal apparatus shown in FIG. 1 is configured such that the separation tank 3 and the receiving tank 5 are mounted on a moving vehicle 6 and are movable. As long as the mobile vehicle 6 can move, any vehicle such as a two-wheeled vehicle, a three-wheeled vehicle, or a four-wheeled vehicle can be used.

(Embodiment of processing method of grease trap drainage)
The grease trap drainage processing method of the present invention can be carried out without using the above-described grease trap drainage processing apparatus, but here, as an example, the case of processing using the processing apparatus is shown in FIGS. This will be described with reference to (c). In addition, in order to make the internal structure of the filter 4 easy to see, the upper moisture flow path 24 is not illustrated in FIGS.

  The case 7 in which the filter 8 and the pump 2 are accommodated in the drained liquid in the grease strap G is taken. The motor M of the pump 2 is operated to pump up the drainage liquid in the grease trap G. At this time, solids such as raw garbage, leftover food, chopsticks, toothpicks, paper scraps, vinyl scraps, and sludge in the drained liquid in the grease trap G are removed by the side plate (for example, punching metal) 10 of the case 7. Separated from the drainage.

  The drained liquid separated from the solid matter is sent from the pumping machine 2 through the hose 9 into the separation tank 3 (FIG. 3A). At this time, the drain 28, the upper moisture outlet 20, the intermediate water outlet 26 and the drain outlet 21 of the separation tank 3 are closed. The drained liquid sent into the separation tank 3 rises while meandering along the baffle plate 17 in the separation tank 3. When the drainage is sent to the upper part of the separation tank 3, the operation of the motor M is temporarily stopped and left until the oily water is sufficiently separated in the separation tank 3. During this time, the oil component having a specific gravity lower than that of water accumulates above the separation tank 3, and the moisture having a specific gravity accumulates below.

  When the effluent in the separation tank 3 is separated into moisture and oil, the on-off valve 22 of the effluent outlet 21 of the separation tank 3 is opened to send out the effluent to the filter 4 (FIG. 3B). The oil content in the drainage liquid is removed by the filter material 4 b by passing through the filter 4. Depending on the material of the filter material 4b, deodorization, decolorization and the like are also performed. The drained liquid exiting the filter 4 is discharged into the receiving tank 5 through the drainage outlet 23 provided below the filter 4. At this time, the water in the separation tank 3 can be discharged into the receiving tank 5 from the upper water flow path 24, the intermediate water discharge pipe 27, and the drain 28.

  The drained liquid sent into the receiving tank 5 is further filtered in the receiving tank 5 and collected in the receiving tank 5. The accumulated drainage is returned to the grease trap G by opening / closing the opening / closing valve 32 of the drainage return path 31.

  By repeating the above process several times, the waste dust in the grease trap G is removed, the drainage is filtered, and the grease trap is purified. The number of repetitions can be arbitrarily selected depending on the grease trap G, the degree of contamination of the drainage, and the like.

  The pump 2 and the case 7 can be separated. The pump 2 can be installed on the ground or mounted on a mobile vehicle. In this case, the pump 2 is not a submersible pump but a land pump.

DESCRIPTION OF SYMBOLS 1 Removal tool 2 Pumping machine 3 Separation tank 4 Filter 4a Container 4b Filter material 5 Receiving tank 6 Moving vehicle 7 Case 8 Filter 9 Hose 10 Side plate (on the case entrance side) 10a Drainage passage hole 11 Partition plate 11a Hole 12 Filter accommodation chamber DESCRIPTION OF SYMBOLS 13 Pumping machine storage chamber 14 Cover 15 Opening material 16 Drainage introduction port 17 Baffle plate 17a Root part (of baffle plate) 18 Drainage path 20 Upper water outlet 21 Drainage outlet 22 Opening and closing valve 23 Drainage outlet 24 Upper water Distribution channel 25 Open / close valve 26 Intermediate water outlet 27 Intermediate water discharge pipe 27a Connecting portion 27b Upward pipe portion 27c Horizontal pipe portion 27d Downward pipe portion 28 Drain 29 Open / close valve 30 Tank filter 31 Drain return path 32 Open / close valve A Suction device B Storage room C Solid-liquid separator D Heater E Oil / water separation tank F Vehicle G G Trap H carrier I tank J separation chamber M motor

Claims (5)

In the grease trap drainage processing method of pumping up the wastewater in the greasetrap and processing it,
Remove the dust in the grease trap, remove dirt from the drainage, pump the drainage into the separation tank,
Raising the drainage and separating oil and water during the rise,
The oil in the separated drainage liquid separated by oil and water is removed by a filter,
The grease trap drainage treatment method, wherein the drained liquid from which oil has been removed is filtered as it is or through another filter and returned to the grease trap or sent to a discharge pipe outside the grease strap. In the grease trap drainage treatment device that pumps and purifies the drainage fluid in the grease strap,
The drainage treatment device is a removal tool for removing dirt of drainage in the grease strap,
A pump that sucks the drainage through the removal tool;
A separation tank for separating oil and water from the effluent sent from the pump;
Provided with a filter that filters the separated effluent discharged from the separation tank,
The separation tank has two or more baffle plates disposed therein,
The grease trap drainage treatment apparatus, wherein the baffle plate is disposed obliquely upward inward in the vertical direction with a rising passage through which the drainage supplied can rise upward from below. The grease trap drainage treatment apparatus according to claim 2,
A receiving tank is disposed below the separation tank, and the receiving tank can store the filtered drained liquid filtered by the filter and the separated water separated from the oil and water in the separating tank, and the filtered drained liquid inside, A grease trap drainage treatment apparatus comprising a receiving tank filter for filtering separated water. In the grease trap drainage processing apparatus according to claim 2 or claim 3,
A grease trap drainage treatment apparatus comprising a discharge passage for discharging water separated into oil and water inside the separation tank to the outside. The grease trap drainage processing apparatus according to any one of claims 2 to 4,
A grease trap drainage treatment apparatus, wherein a separation tank or a separation tank and a receiving tank are mounted on a mobile vehicle.

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