CN109011711B - Kitchen wastewater oil-water separation tank - Google Patents
Kitchen wastewater oil-water separation tank Download PDFInfo
- Publication number
- CN109011711B CN109011711B CN201811118661.9A CN201811118661A CN109011711B CN 109011711 B CN109011711 B CN 109011711B CN 201811118661 A CN201811118661 A CN 201811118661A CN 109011711 B CN109011711 B CN 109011711B
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- China
- Prior art keywords
- tank body
- partition plate
- partition
- guide plate
- oil
- Prior art date
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- 238000000926 separation method Methods 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000002351 wastewater Substances 0.000 title claims abstract description 25
- 238000005192 partition Methods 0.000 claims description 89
- 239000007788 liquid Substances 0.000 claims description 40
- 230000001174 ascending effect Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000000855 fermentation Methods 0.000 description 4
- 230000004151 fermentation Effects 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000010806 kitchen waste Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0211—Separation of non-miscible liquids by sedimentation with baffles
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Removal Of Floating Material (AREA)
Abstract
The invention provides an oil-water separation tank for kitchen wastewater, which comprises an outer tank body, an inner tank body and a guide plate, wherein the outer tank body and the inner tank body are cylindrical, and the bottoms of the outer tank body and the inner tank body are provided with plane tank bottoms; the guide plate is clockwise spiral and is arranged between the outer tank body and the inner tank body, a plurality of separation plates are arranged in the separation device by utilizing the oil separation tank principle, and oil and water in the kitchen wastewater are separated through the separation plates. Compared with the traditional box-type separation device, the separation device has smaller occupied area, a plurality of baffles are arranged in the separation device, and the oil-water separation rate is higher; the kitchen wastewater is guided to orderly flow in the separation device by the spiral guide plate, so that the separation process is more stable, and the separation quality is higher.
Description
Technical Field
The invention belongs to the technical field of anaerobic fermentation, and particularly relates to an oil-water separation tank for kitchen wastewater.
Background
At present, anaerobic reactors are widely applied to the field of kitchen waste treatment, and kitchen waste contains a large amount of food oil, so that COD (chemical oxygen demand) value can be greatly improved, the fermentation process is slow, and the fermentation efficiency is affected. Therefore, oil-water separation work is required before fermentation.
The oil in the kitchen wastewater mainly has three forms: floating oil, emulsified oil and molecular oil. The floating oil is easy to float upwards and can be separated in a standing, heating and floating mode; the emulsified oil is tiny oil particles in a stable state, has the particle size of about 0.5-25 mu m, has the characteristics of no floating and no agglomeration, and can be separated by demulsification treatment; the molecular oil exists in a molecular form, has low content, does not need to be separated, and can directly enter subsequent biological treatment.
At present, centrifugal equipment is mainly adopted for oil-water separation, and a centrifugal machine can separate out a class of oil substances with approximate density. However, the centrifugal separation cannot separate the emulsified oil in the water, and because the centrifugal machine is stirred at a high speed in the separation process, part of the floating oil is changed into the emulsified oil to enter the water, and the oil-water separation rate is reduced.
Disclosure of Invention
The invention provides an oil-water separation tank for kitchen wastewater, and aims to solve the problems that the existing oil-water separation equipment is not thorough in separation and the content of emulsified oil in the separated water is high.
Therefore, the invention adopts the following technical scheme:
an oil-water separation tank for kitchen wastewater, comprising:
the outer tank body is cylindrical, and a plane tank bottom is arranged at the bottom of the outer tank body;
the inner tank body is arranged in the outer tank body;
the guide plate is spirally arranged between the outer tank body and the inner tank body, and the spiral number of turns of the guide plate is smaller than one turn;
the bottom end of the first partition plate is fixed on the tank bottom, one side of the first partition plate is fixed with the bottom end of the guide plate, and the top end of the first partition plate is higher than the top end of the guide plate;
the second baffle plate is fixed on the lower surface of the guide plate and is arranged close to the first baffle plate, and a certain distance is reserved between the second baffle plate and the tank bottom;
the third partition plate is positioned below the guide plate and arranged at one side of the second partition plate corresponding to the spiral ascending direction of the guide plate, and the bottom end of the third partition plate is fixed with the tank bottom and has a certain interval with the lower surface of the guide plate;
the fourth baffle is positioned between the first baffle and the top end of the guide plate, the inner side edge of the fourth baffle is fixed with the inner tank body, and a certain distance is reserved between the inner side edge of the fourth baffle and the tank bottom;
the fifth baffle plate is positioned at the top end of the guide plate and is fixed with the upper surface of the guide plate, and the top end of the fifth baffle plate is lower than the top end of the fourth baffle plate;
a sixth partition plate fixed on the upper surface of the baffle plate and located between the first partition plate and the fifth partition plate;
the first bin is formed among the first partition plate, the second partition plate and the guide plate;
a second plenum formed between the first and fourth partitions;
the third bin is formed among the fifth partition plate, the sixth partition plate and the guide plate;
the liquid inlet is arranged on the outer tank body and is communicated with the first bin;
the oil outlet is arranged on the outer tank body and is communicated with the third bin.
Further, the first partition plate is provided with a balance hole, and the balance hole is higher than the bottom end of the guide plate.
Further, a water outlet is arranged at the lower part of the inner tank body, and the water outlet is positioned between the first partition plate and the fourth partition plate.
Further, the device further comprises a seventh baffle plate, wherein the seventh baffle plate is positioned between the fifth baffle plate and the sixth baffle plate and is fixed with the upper surface of the guide plate.
Further, the top of the outer tank body is provided with an annular corridor for passing people.
Further, the surface of the outer tank body is provided with an insulation board.
Further, a cat ladder is arranged on the outer side of the outer tank body, and the top end of the cat ladder is connected with the annular corridor.
The invention has the beneficial effects that: according to the invention, the separation device is designed into a tank-shaped structure by utilizing the principle of an oil separation tank, and compared with the traditional box-type separation device, the separation tank occupies smaller area, and is internally provided with a plurality of baffles, so that the oil-water separation rate is higher; the kitchen wastewater is guided to orderly flow in the separation device by the spiral guide plate, so that the separation process is more stable, and the separation quality is higher; the separated oil and water are in two different areas, so that the separation of workers is facilitated, and the operation difficulty of the workers is greatly reduced.
Drawings
FIG. 1 is a schematic view of the structure of the present invention with the outer tank removed;
FIG. 2 is a schematic view of the external structure of the present invention;
FIG. 3 is a schematic view of the invention deployed in the direction of fluid flow;
1-outer tank body, 2-inner tank body, 3-tank bottom, 4-deflector, 5-first baffle, 6-second baffle, 7-third baffle, 8-fourth baffle, 9-balance hole, 10-delivery port, 11-fifth baffle, 12-sixth baffle, 13-seventh baffle, 14-liquid inlet, 15-oil outlet, 16-annular corridor, 17-cat ladder.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1-3, an oil-water separation tank for kitchen wastewater specifically comprises:
the outer tank body 1, the inner tank body 2 and the guide plate 4 are cylindrical, and the bottoms of the outer tank body 1 and the inner tank body 2 are provided with a plane tank bottom 3; the guide plate 4 is clockwise spiral and is arranged between the outer tank 1 and the inner tank 2 (as shown in fig. 1), and the spiral number of turns of the guide plate 4 is smaller than one turn. A plurality of clapboards are arranged between the outer tank body 1 and the inner tank body 2, two sides of each clapboard are fixed with the outer tank body 1 and the inner tank body 2, and the design of each clapboard is described in detail below:
the bottom end of the first partition plate 5 is fixed on the tank bottom 3, one side of the first partition plate is fixed with the bottom end of the guide plate 4, and the top end of the first partition plate 5 is higher than the top end of the guide plate 4;
the second baffle plate 6 is fixed on the lower surface of the guide plate 4 and is arranged close to the first baffle plate 5, and a certain distance is reserved between the second baffle plate 6 and the tank bottom 3;
the third baffle 7 is positioned below the guide plate 4 and arranged at one side of the second baffle 6 corresponding to the spiral ascending direction of the guide plate 4, and the bottom end of the third baffle 7 is fixed with the tank bottom 3 and has a certain interval with the lower surface of the guide plate 4;
the fourth baffle plate 8 is positioned between the first baffle plate 5 and the top end of the guide plate 4, the inner side edge of the fourth baffle plate 8 is fixed with the inner tank body 2, and a certain distance is reserved between the inner side edge of the fourth baffle plate 8 and the tank bottom 3;
the fifth baffle 11 is positioned at the top end of the guide plate 4 and is fixed with the upper surface of the guide plate 4, and the top end of the fifth baffle 11 is lower than the top end of the fourth baffle 8;
the sixth partition 12 is fixed on the upper surface of the baffle 4 and is located between the first partition 5 and the fifth partition 11;
the seventh partition 13 is located between the fifth partition 11 and the sixth partition 12 and is fixed to the upper surface of the baffle 4.
In addition, the above-mentioned baffle forms some cavities in this knockout drum, are respectively: a first chamber formed between the first partition 5, the second partition 6, and the baffle 4; a second chamber formed between the first partition 5 and the fourth partition 8; a third chamber formed between the fifth partition 11, the sixth partition 12, and the baffle 4.
The separating tank is also provided with a liquid inlet 14, a water outlet 10, an oil outlet 15 and a balance hole 9, wherein the liquid inlet 14 is arranged on the outer tank body 1 and is communicated with the first bin; the water outlet 10 is arranged at the lower part of the inner tank body 2 and is positioned between the first baffle 5 and the fourth baffle 8; the oil outlet 15 is arranged on the outer tank body 1 and is communicated with the third bin; the balance hole 9 is arranged on the first partition board 5 and is higher than the bottom end of the guide plate 4, and the main function of the balance hole 9 is to buffer liquid, so that turbulent flow caused by liquid impacting the partition board is avoided, and separated oil liquid and water body are disturbed.
In addition, an insulation board (not shown in the figure) is arranged on the outer tank body 1, an annular corridor 16 is arranged at the top of the outer tank body 1, a ladder stand 17 is arranged on the outer tank body 1, the top end of the ladder stand 17 is connected with the annular corridor 16, and a worker can conveniently climb the annular corridor 16 to clean separated oil.
The following working principle of the invention is as follows:
firstly, a certain amount of clear water at 80 ℃ is injected into a separating tank, so that the problem of incomplete separation caused by turbulent flow of liquid during the subsequent injection of kitchen wastewater to be separated is prevented, and oil separated from the kitchen wastewater is prevented from passing through a balance hole 9 and being mixed into the liquid from which the oil is separated. Because the boiling point of oil is 80 ℃, the injected water is more easily separated when heated to 80 ℃.
Specifically, clean water at 80 ℃ is injected into the split device through the liquid inlet 14, and as the first partition plate 5 is fixed on the tank bottom 3, the second partition plate 6 and the tank bottom 3 have a certain distance (the distance is generally 120-200 mm), and the liquid can only flow along the spiral ascending direction of the guide plate 4 and pass through the gap between the second partition plate 6 and the tank bottom 3. When the liquid flows clockwise to the third baffle 7, the liquid can only accumulate there until the third baffle 7 is turned over, and then continues to flow evenly clockwise along the tank bottom 3 until it is intercepted and begins to accumulate when it reaches the first baffle 5, since the third baffle 7 is sealed from the tank bottom 3, and a certain distance (typically 120-200 mm) is left between the top of the third baffle 7 and the baffle 4. The fourth baffle plate 8 is spaced from the tank bottom 3 by a certain distance (the distance is generally 120-200 mm), the liquid level rises to submerge the position, and when the liquid level rises to the position of the balance hole 9, the liquid passes through the balance hole 9 and enters the upper part of the guide plate 4. So far, the filling liquid is stopped, and the preparation for starting is completed.
Heating kitchen wastewater to 80 ℃, injecting liquid into the separating tank through a liquid inlet 14 according to a set flow rate, wherein the flow mode of the kitchen wastewater after entering the tank body is consistent with the flow mode of the pre-poured clean water, when the kitchen wastewater passes through the second partition plate 6 and the third partition plate 7, oil drops in the kitchen wastewater have more collision and combination opportunities due to the fluctuation flow of the liquid, the oil drops after collision and combination start to float and gather, and most of oil in the liquid floats before the liquid flows to the fourth partition plate 8. Since the previously introduced clear water has submerged the lower end of the fourth partition 8, the floating oil cannot pass through the fourth partition 8, but the liquid from which the oil is separated from the lower layer can flow between the fourth partition 8 and the first partition 5 through the gap between the fourth partition 8 and the tank bottom 3. The oil and water in the kitchen wastewater are initially separated, and before the oil stays in the fourth partition plate 8, the liquid from which the oil is separated can enter between the first partition plate 5 and the fourth partition plate 8.
Along with the continuous injection of the kitchen wastewater, the liquid level in the tank body continuously rises, and when the liquid level exceeds the water outlet 10, the liquid separated from the oil liquid between the first baffle plate 5 and the fourth baffle plate 8 can flow into the inner tank body 2 through the water outlet 10. As the liquid level continues to rise, when the liquid level exceeds the height of the fifth partition 11, the oil in the upper layer of the liquid can flow into the area between the fifth partition 11 and the seventh partition 13 beyond the fifth partition 11, and the liquid level of the liquid flowing into the area between the fifth partition 11 and the seventh partition 13 continues to rise until the seventh partition 13 is turned over and enters the area between the seventh partition 13 and the sixth partition 12, and the main function of the seventh partition 13 is to perform secondary separation, so that the oil content of the separated liquid is improved. After the liquid level of the oil between the seventh partition 13 and the sixth partition 12 rises to a certain height, the oil may be discharged through the oil outlet 15. The water body of the separated oil liquid in the inner tank body 2 can be pumped by a water pump.
In the invention, the balance holes 9 on the first partition plate 5 mainly play a role in buffering, and the liquid before flowing into the first partition plate 5 can flow into the upper layer of the guide plate 4 through the balance holes 9, so that the turbulence caused when the liquid flows and contacts the first partition plate 5 is prevented, the separated liquid is disturbed, and the separation effect is influenced. In addition, the kitchen wastewater is slowly introduced according to a certain flow rate, and if the introduction speed is too high, the oil-water separation is not thorough.
It should be noted that the above is only a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be considered as protecting the scope of the present invention.
Claims (5)
1. The kitchen wastewater oil-water separation tank is characterized by comprising:
the outer tank body (1), the outer tank body (1) is cylindrical, and the bottom of the outer tank body is provided with a plane tank bottom (3);
the inner tank body (2), the inner tank body (2) is arranged in the outer tank body (1);
the guide plate (4) is spirally arranged between the outer tank body (1) and the inner tank body (2), and the spiral number of turns of the guide plate (4) is smaller than one turn;
the bottom end of the first partition plate (5) is fixed on the tank bottom (3), one side of the first partition plate is fixed with the bottom end of the guide plate (4), and the top end of the first partition plate (5) is higher than the top end of the guide plate (4);
the second partition plate (6) is fixed on the lower surface of the guide plate (4) and is arranged close to the first partition plate (5), and a certain distance is reserved between the second partition plate (6) and the tank bottom (3);
the third partition plate (7) is positioned below the guide plate (4) and arranged on one side of the second partition plate (6) corresponding to the spiral ascending direction of the guide plate (4), and the bottom end of the third partition plate (7) is fixed with the tank bottom (3) and has a certain interval with the lower surface of the guide plate (4);
the fourth clapboard (8) is positioned between the first clapboard (5) and the top end of the guide plate (4), the inner side edge of the fourth clapboard (8) is fixed with the inner tank body (2) and a certain distance is reserved between the inner tank body and the tank bottom (3);
the fifth partition board (11), the said fifth partition board (11) locates at top of the deflector (4) and fixes with upper surface of the deflector (4), and the top of the fifth partition board (11) is lower than the top of the fourth partition board (8);
a sixth partition plate (12), wherein the sixth partition plate (12) is fixed on the upper surface of the deflector (4) and is positioned between the first partition plate (5) and the fifth partition plate (11);
the first bin is formed among the first partition plate (5), the second partition plate (6) and the guide plate (4);
a second chamber formed between the first partition plate (5) and the fourth partition plate (8);
the third bin is formed among the fifth partition plate (11), the sixth partition plate (12) and the guide plate (4);
the liquid inlet (14) is arranged on the outer tank body (1) and is communicated with the first bin;
the oil outlet (15) is arranged on the outer tank body (1) and is communicated with the third bin;
a balance hole (9) is formed in the first partition plate (5), and the balance hole (9) is higher than the bottom end of the guide plate (4); the lower part of the inner tank body (2) is provided with a water outlet (10), and the water outlet (10) is positioned between the first partition board (5) and the fourth partition board (8).
2. Kitchen wastewater oil-water separator tank according to claim 1, characterized in that it further comprises a seventh separator (13), said seventh separator (13) being located between the fifth separator (11) and the sixth separator (12) and being fixed to the upper surface of the deflector (4).
3. Kitchen wastewater oil-water separation tank according to claim 1, characterized in that the top of the outer tank body (1) is provided with an annular corridor (16) for personnel to pass through.
4. Kitchen wastewater oil-water separation tank according to claim 1, characterized in that the surface of the outer tank body (1) is provided with a heat insulation plate.
5. A kitchen wastewater oil-water separation tank according to claim 3, characterized in that a ladder stand (17) is arranged on the outer side of the outer tank body (1), and the top end of the ladder stand (17) is connected with an annular corridor (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811118661.9A CN109011711B (en) | 2018-09-26 | 2018-09-26 | Kitchen wastewater oil-water separation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811118661.9A CN109011711B (en) | 2018-09-26 | 2018-09-26 | Kitchen wastewater oil-water separation tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109011711A CN109011711A (en) | 2018-12-18 |
| CN109011711B true CN109011711B (en) | 2023-12-05 |
Family
ID=64618331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811118661.9A Active CN109011711B (en) | 2018-09-26 | 2018-09-26 | Kitchen wastewater oil-water separation tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109011711B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262526A (en) * | 2021-04-22 | 2021-08-17 | 中冶焦耐(大连)工程技术有限公司 | Surplus aqueous ammonia separating tank |
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| US6730222B1 (en) * | 1999-04-15 | 2004-05-04 | Hydro International Plc | Hydrodynamic vortex separator |
| CN1868568A (en) * | 2005-05-25 | 2006-11-29 | 郑红专 | Apparatus for separation and regeneration of emulsion |
| CN201250424Y (en) * | 2008-03-10 | 2009-06-03 | 李雍 | Liquid self-flow power-free oil-water separator |
| CN201983546U (en) * | 2011-03-10 | 2011-09-21 | 浙江新三荣制冷有限公司 | Spiral oil separator |
| KR20140070079A (en) * | 2012-11-30 | 2014-06-10 | (주)에코바이오테크 | Multi-Stage Oil-Water Separator of Flow Type Using Water Level difference |
| CN105936516A (en) * | 2016-06-03 | 2016-09-14 | 张继龙 | Kitchen waste separation collector and use method thereof |
| DE102016210150A1 (en) * | 2015-06-29 | 2016-12-29 | Volkswagen Aktiengesellschaft | Separator and method of treating a flowing medium |
| JP2017023892A (en) * | 2015-07-16 | 2017-02-02 | 木村電工株式会社 | Oil-water separation system |
| CN209033817U (en) * | 2018-09-26 | 2019-06-28 | 甘肃驰奈生物能源***有限公司 | A kind of kitchen waste oil-water separation device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8815101B2 (en) * | 2011-10-10 | 2014-08-26 | Intevep, S.A. | Sediment removal tank and system |
| US9765265B2 (en) * | 2014-04-28 | 2017-09-19 | Kbk Industries, Llc | Separation vessel with enhanced particulate removal |
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2018
- 2018-09-26 CN CN201811118661.9A patent/CN109011711B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2218592Y (en) * | 1995-02-09 | 1996-01-31 | 倪海英 | Screw plate oil-water separator |
| US6730222B1 (en) * | 1999-04-15 | 2004-05-04 | Hydro International Plc | Hydrodynamic vortex separator |
| CN1868568A (en) * | 2005-05-25 | 2006-11-29 | 郑红专 | Apparatus for separation and regeneration of emulsion |
| CN201250424Y (en) * | 2008-03-10 | 2009-06-03 | 李雍 | Liquid self-flow power-free oil-water separator |
| CN201983546U (en) * | 2011-03-10 | 2011-09-21 | 浙江新三荣制冷有限公司 | Spiral oil separator |
| KR20140070079A (en) * | 2012-11-30 | 2014-06-10 | (주)에코바이오테크 | Multi-Stage Oil-Water Separator of Flow Type Using Water Level difference |
| DE102016210150A1 (en) * | 2015-06-29 | 2016-12-29 | Volkswagen Aktiengesellschaft | Separator and method of treating a flowing medium |
| JP2017023892A (en) * | 2015-07-16 | 2017-02-02 | 木村電工株式会社 | Oil-water separation system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109011711A (en) | 2018-12-18 |
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