A multi-stage oil separation sewage treatment device

Abstract

The utility model discloses a multistage oil separation's sewage treatment equipment, including treatment pond, be equipped with the partition plate in treatment pond, and the partition plate divides treatment pond and forms first treatment area and second treatment area, the top of partition plate is spaced apart with the top of treatment pond and forms water guide interval, is equipped with first oil separation board in first treatment area, and first oil separation board sets up with the partition plate interval, the bottom of first oil separation board is equipped with first deflector, and first deflector sets up with the bottom wall of first treatment area interval, and first deflector is inclined downward in water flow direction, second treatment area is equipped with first oil removal spare and second oil removal spare, and second oil removal spare is equipped with a plurality of inclined flow channel, and flow channel is gradually inclined in the adverse water flow direction. The utility model discloses through first oil separation board and first deflector of first treatment area, prolongs sewage flow path, and enters second treatment area and carries out oil removal treatment through first oil removal spare, and prolongs water flow separation path with second oil removal spare, thereby improves the oil removal effect.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a multi-stage oil-water separation wastewater treatment device. Background Technology

[0002] Currently, some wastewater from industrial production processes contains large amounts of grease. If this grease is discharged directly without effective treatment, it will cause serious environmental pollution. Traditional oil-water separation equipment typically uses a single oil-water separator structure, which has low separation efficiency and fails to meet the oil content standards for the effluent, leading to problems in subsequent biological processes for wastewater treatment.

[0003] In related technologies, traditional oil-water separators suffer from problems such as large surface disturbances and incomplete oil layer demulsification, resulting in a blurred oil-water interface. Furthermore, when using inclined plate separators for oil-liquid separation, there are issues such as insufficient hydraulic residence time and low oil droplet coalescence efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a multi-stage oil-water separation sewage treatment device, which can extend the sewage flow path through the first oil-water separating plate and the first guide plate in the first treatment zone, and enter the second treatment zone to extend the oil-water separation path with the second oil removal component to increase the oil-water residence time and thus improve the oil-water separation efficiency. Then, it passes through the first oil removal component for oil removal treatment to improve the oil removal efficiency.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A multi-stage oil-water separation wastewater treatment device, comprising,

[0007] A treatment tank is provided with a partition plate inside the treatment tank, which divides the treatment tank into a first treatment area and a second treatment area, which are distributed sequentially in the direction of water flow; the top of the partition plate is spaced from the top of the treatment tank to form a water guiding gap, and the first treatment area and the second treatment area are connected through the water guiding gap.

[0008] The first processing area is provided with a first oil separator, which is spaced apart from the partition plate; the bottom end of the first oil separator is provided with a first guide plate, which is spaced apart from the bottom wall of the first processing area, and the first guide plate is inclined downward in the direction of water flow.

[0009] The second processing zone is provided with a first degreasing component and a second degreasing component. The first degreasing component and the second degreasing component are spaced apart in the height direction of the first processing zone, and the first degreasing component is located above the second degreasing component. The second degreasing component is provided with multiple inclined guide channels, which are arranged in the direction of water flow. The guide channels are gradually inclined in the direction against the water flow.

[0010] Furthermore, the first processing zone is provided with a first oil drain port at the top and a first vent port at the bottom.

[0011] Furthermore, the first degreasing component includes multiple scrapers and a scraper driving component. The scraper driving component includes a transmission belt, a driving component, and two transmission wheels, which are spaced apart in the first direction. The two ends of the transmission belt are respectively wound around the two transmission wheels, and the driving component is used to drive the transmission wheels to rotate. The multiple scrapers are spaced apart on the transmission belt.

[0012] Furthermore, the first degreasing component also includes a separating inclined plate, which is located at the end of the second processing area away from the first processing area and is spaced apart from the drive wheel; the separating inclined plate is used to frictionally engage with the drive wheel when the scraper rotates to the drive wheel.

[0013] Furthermore, the second processing area is provided with a second oil outlet, which is located above the second oil removal component. The separation inclined plate and the second oil outlet are distributed sequentially at intervals in the water flow direction.

[0014] Furthermore, the second treatment zone is provided with a second oil separator, which is spaced apart from the partition plate; the first oil removal component and the second oil removal component are disposed between the second oil separator and the partition plate; a second guide plate is provided at the bottom of the second oil separator, which is inclined in the direction of counterflow; the second guide plate is spaced apart from the bottom of the second treatment zone.

[0015] Furthermore, the second treatment zone is provided with a third oil separator, which is spaced apart from the second oil separator. The partition plate, the second oil separator, and the third oil separator are spaced apart in the direction of water flow. A third guide plate is provided at the bottom of the third oil separator, which is inclined in the direction of water flow. The third guide plate is spaced apart from the bottom of the second treatment zone.

[0016] Furthermore, a third oil drain is provided between the second oil separator and the third oil separator, and the third oil drain is located at the top of the second processing area.

[0017] Furthermore, the second treatment area is provided with a discharge outlet, and the third oil separator and the discharge outlet are distributed sequentially at intervals in the direction of water flow.

[0018] Furthermore, the bottom of the second treatment zone is provided with a plurality of sludge discharge hoppers, which are spaced apart in the direction of water flow; the bottom of each sludge discharge hopper is provided with a sludge discharge port.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] The first oil separator and the first guide plate in the first treatment zone extend the flow path of the sewage, guiding the oil in the sewage to float to the top of the first treatment zone and discharge it through the first oil outlet, thus allowing the sewage to undergo preliminary oil removal in the first treatment zone. After preliminary oil removal, the sewage flows into the second treatment zone through the water guide interval, and then passes through multiple inclined guide channels in the second treatment zone, which extends the oil-water separation path to increase the oil-water residence time and improve the oil-water separation efficiency. This causes the oil residue in the sewage to float to the surface and undergo oil removal treatment through the scraper and separation inclined plate of the first oil removal component, separating the oil residue from the sewage. The oil residue can be discharged through the second oil outlet, thereby improving the oil removal efficiency and reducing the oil content in the sewage. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the present invention;

[0022] Figure 2 This is a top view of the present invention;

[0023] Figure 3 This is an overall view of the present utility model.

[0024] In the diagram: 1. First treatment zone; 2. Second treatment zone; 3. Partition plate; 11. Water inlet pipe; 12. First oil outlet; 13. First oil separator plate; 131. First guide plate; 14. First vent; 21. Scraper; 22. Separation inclined plate; 23. Second oil outlet; 24. Guide channel; 25. Sludge hopper; 26. Sludge outlet; 31. Third oil outlet; 32. Second oil separator plate; 321. Second guide plate; 33. Third oil separator plate; 331. Third guide plate; 41. Outlet. Detailed Implementation

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0026] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0028] like Figure 1 , Figure 2 as well as Figure 3 The multi-stage oil-water separation wastewater treatment equipment shown includes a treatment tank. Specifically, a partition plate 3 is provided within the treatment tank, dividing the treatment tank into a first treatment zone 1 and a second treatment zone 2. The first treatment zone 1 and the second treatment zone 2 are sequentially distributed in the water flow direction. The top of the partition plate 3 is spaced from the top of the treatment tank to form a water-guiding gap, and the first treatment zone 1 and the second treatment zone 2 are connected through the water-guiding gap. In addition, a first oil-water separating plate 13 can be provided within the first treatment zone 1, and the first oil-water separating plate 13 is spaced apart from the partition plate 3. The bottom end of 13 is provided with a first guide plate 131, which is spaced apart from the bottom wall of the first treatment zone 1, and the first guide plate 131 is inclined downward in the direction of water flow. In addition, a first degreasing component and a second degreasing component can be provided in the second treatment zone 2. The first degreasing component and the second degreasing component can be spaced apart in the height direction of the first treatment zone 1, and the first degreasing component is located above the second degreasing component. Then, the second degreasing component is provided with a plurality of inclined guide channels 24, which are arranged in the direction of water flow, and the guide channels 24 are gradually inclined in the direction of countercurrent water flow.

[0029] Based on the above structure, when using the multi-stage oil-separating sewage treatment equipment of this utility model, the treatment tank can be divided into a first treatment zone 1 and a second treatment zone 2 distributed sequentially in the water flow direction by setting a partition plate 3 in the treatment tank. Then, the top of the partition plate 3 is spaced apart from the top of the treatment tank to form a water guiding gap. In this way, the sewage entering the treatment tank can flow into the second treatment zone 2 through the first treatment zone 1 and the water guiding gap. A first oil-separating plate 13 can be set in the first treatment zone 1. The first oil-separating plate 13 can be spaced apart from the partition plate 3, and a first guide plate 131 can be set at the bottom of the first partition plate. The first guide plate 131 is spaced apart from the bottom wall of the first treatment zone 1, and the first guide plate 131 is inclined downward in the water flow direction. In this way, the sewage entering the first treatment zone 1 can extend the flow path of the sewage through the first oil-separating plate 13 and the first guide plate 131 set in the first treatment zone 1, and can guide the oil in the sewage to float to the top of the first treatment zone 1 for preliminary oil removal and discharge.

[0030] Then, the wastewater after preliminary oil removal can reach the bottom of the first guide plate 131 along the first oil separator 131 and the first guide plate 131. Since the first guide plate 131 is spaced apart from the bottom wall of the first treatment zone 1, the wastewater can flow through the gap formed between the first guide plate 131 and the bottom wall of the first treatment zone 1 and then through the water guide gap into the second treatment zone 2. The second treatment zone 2 can be provided with a first oil removal component and a second oil removal component, which are spaced apart along the height direction of the first treatment zone 1, with the first oil removal component located above the second oil removal component. The second oil removal component is provided with multiple inclined guides. The flow channel 24 has multiple guide channels 24 arranged in the direction of water flow, while the guide channels 24 gradually slope in the direction of counter-current flow. This allows the wastewater entering the second treatment zone 2 to have its oil-water separation path extended as it flows through the guide channels 24, increasing the oil-water residence time and thus improving the oil-water separation efficiency. This gives the oil residue in the wastewater sufficient time to separate and float to the surface, and then it is de-oiled by the first de-oiling component located above the second de-oiling component, thereby improving the de-oiling efficiency and reducing the oil content in the wastewater.

[0031] It should be noted that the second degreasing component in this embodiment can be formed by multiple inclined pipes, so that each guide channel 24 can be formed by multiple inclined pipes connected internally.

[0032] Furthermore, a first oil drain port 12 can be provided at the top of the first treatment zone 1, and a first vent port 14 can be provided at the bottom of the first treatment zone 1. This allows the wastewater entering the first treatment zone 1 to extend its flow path through the first oil separator 13 and the first guide plate 131 provided in the first treatment zone 1, and can guide the oil in the wastewater to float to the first oil drain port 12 provided at the top of the first treatment zone 1 for preliminary oil removal and discharge; the first vent port 14 is used to discharge the wastewater from the treatment tank when maintenance and repair of the treatment tank are required.

[0033] Furthermore, the first degreasing component includes multiple scrapers 21 and a scraper 21 driving component. Specifically, the scraper 21 driving component includes a transmission belt, a driving component, and two transmission wheels. The two transmission wheels can be spaced apart in the first direction, and the two ends of the transmission belt are respectively wound around the two transmission wheels. The driving component can drive the transmission wheels to rotate after being electrically connected to an external power source. The multiple scrapers 21 are spaced apart on the transmission belt, so that the oil residue in the sewage can be separated and scraped off by the multiple scrapers 21 spaced apart on the transmission belt and then collected after being driven by the conveyor belt, which can improve the degreasing efficiency.

[0034] Furthermore, the first degreasing component also includes a separating inclined plate 22. The separating inclined plate 22 can be set at the end of the second processing zone 2 away from the first processing zone 1 and spaced apart from the drive wheel. The separating inclined plate 22 is used to frictionally engage with the scraper 21 when it rotates to the drive wheel. This allows the oil residue to be separated and scraped by multiple scrapers 21 and then conveyed to the separating inclined plate 22 by the conveyor belt. Then, the oil residue and sewage scraped by the scraper 21 are separated by frictional engagement between the scraper 21 and the separating inclined plate 22, thereby improving the separation efficiency and reducing the sewage content in the oil residue.

[0035] Furthermore, a second oil discharge port 23 can be provided in the second treatment zone 2. The second oil discharge port 23 can be located above the second oil removal component, and the separation inclined plate 22 and the second oil discharge port 23 can be distributed sequentially and alternately in the direction of water flow. In this way, after the oil residue scraped by the scraper 21 and the separation inclined plate 22 are separated by frictional cooperation, the oil residue can be discharged through the second oil discharge port 23 to complete the second oil discharge treatment, reduce the oil content of the wastewater, and thus further improve the oil discharge efficiency.

[0036] Furthermore, a second oil separator 32 can be provided in the second treatment zone 2, and the second oil separator 32 is spaced apart from the partition plate 3. The first oil removal component and the second oil removal component are located between the second oil separator 32 and the partition plate 3. A second guide plate 321 is provided at the bottom of the second oil separator 32, and the second guide plate 321 is inclined in the direction of counterflow. The second guide plate 321 is spaced apart from the bottom of the second treatment zone 2. This allows the oil sludge in the sewage to float to the surface and be de-oiled by the scraper 21 and the separation inclined plate 22 of the first oil removal component, so that the oil sludge is separated from the sewage. The oil sludge can be discharged through the second oil outlet 23. The sewage after oil discharge treatment can reach the bottom of the second guide plate 321 along the bottom of the second oil separator 32. Since the second guide plate 321 is inclined in the direction of counterflow, the oil-water separation path can be extended to increase the oil-water residence time and thus improve the oil-water separation efficiency.

[0037] Furthermore, a third oil separator 33 can be provided in the second treatment zone 2, and the third oil separator 33 is spaced apart from the second oil separator 32. This makes the partition plate 3, the second oil separator, and the third oil separator spaced apart in the direction of water flow. Then, a third guide plate 331 can be provided at the bottom of the third oil separator 33, and the third guide plate 331 is inclined in the direction of water flow. The third guide plate 331 is spaced apart from the bottom of the third treatment zone. In this way, the sewage after the second oil discharge treatment is guided by the second guide plate 321 and settles and accumulates at the bottom of the second treatment zone 2. The oil in the sewage after settling and accumulating can be guided to float up by the third guide plate 331 for the third oil discharge treatment.

[0038] Furthermore, a third oil drain port 31 can be provided between the second oil separator 32 and the third oil separator 33, and the third oil drain port 31 is located at the top of the second treatment zone 2. In this way, the oil in the wastewater after sedimentation and aggregation can be guided to the third oil drain port 31 by the third guide plate 331 for a third oil discharge, thereby further reducing the oil content in the wastewater.

[0039] Furthermore, a discharge port 41 can be provided in the second treatment zone 2. The third oil separator 33 and the discharge port 41 can be distributed sequentially and alternately in the direction of water flow. The discharge port 41 can be set at the top of the second treatment zone 2. After the third oil discharge treatment, the oil in the sewage can float up along the third guide plate 331 to the discharge port 41 and be discharged, thus entering the next treatment process.

[0040] The first oil drain port 12, the second oil drain port 23, the third oil drain port 31 and the outlet port 41 are all connected to oil drain pipes, and each of the corresponding oil drain pipes is equipped with a switch valve to control the oil draining progress.

[0041] Furthermore, multiple sludge discharge hoppers 25 can be provided at the bottom of the second treatment zone 2. These hoppers 25 can be distributed at intervals in the direction of water flow, and sludge discharge ports 26 can be provided at the bottom of each hopper 25. The sludge discharge ports 26 are connected to sludge discharge pipes. In this way, the wastewater after the second oil discharge treatment is guided by the second guide plate 321 and settles and accumulates in the multiple sludge discharge hoppers 25 at the bottom of the second treatment zone 2. The sludge and sediment in the wastewater can be discharged through the sludge discharge ports 26 at the bottom of the hoppers 25, thereby reducing the sludge content in the wastewater.

[0042] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model.

Claims

1. A multi-stage oil-water separation wastewater treatment device, characterized in that, include, A treatment tank is provided with a partition plate inside the treatment tank, which divides the treatment tank into a first treatment area and a second treatment area, which are distributed sequentially in the direction of water flow; the top of the partition plate is spaced from the top of the treatment tank to form a water guiding gap, and the first treatment area and the second treatment area are connected through the water guiding gap. The first processing area is provided with a first oil separator, which is spaced apart from the partition plate; the bottom end of the first oil separator is provided with a first guide plate, which is spaced apart from the bottom wall of the first processing area, and the first guide plate is inclined downward in the direction of water flow. The second processing zone is provided with a first degreasing component and a second degreasing component. The first degreasing component and the second degreasing component are spaced apart in the height direction of the first processing zone, and the first degreasing component is located above the second degreasing component. The second degreasing component is provided with multiple inclined guide channels, which are arranged in the direction of water flow. The guide channels are gradually inclined in the direction against the water flow.

2. The multi-stage oil-water separation wastewater treatment equipment according to claim 1, characterized in that, The first processing zone has a first oil drain port at the top and a first vent at the bottom.

3. The multi-stage oil-water separation wastewater treatment equipment according to claim 1, characterized in that, The first degreasing component includes multiple scrapers and a scraper driving component. The scraper driving component includes a transmission belt, a driving component, and two transmission wheels. The two transmission wheels are spaced apart in a first direction. The two ends of the transmission belt are respectively wound around the two transmission wheels. The driving component is used to drive the transmission wheels to rotate. The multiple scrapers are spaced apart on the transmission belt.

4. The multi-stage oil-water separation wastewater treatment equipment according to claim 3, characterized in that, The first degreasing component further includes a separating inclined plate, which is located at the end of the second processing area away from the first processing area and is spaced apart from the drive wheel; the separating inclined plate is used to frictionally engage with the drive wheel when the scraper rotates to the drive wheel.

5. The multi-stage oil-water separation wastewater treatment equipment according to claim 4, characterized in that, The second processing area is provided with a second oil outlet, which is located above the second oil removal component. The separation inclined plate and the second oil outlet are distributed sequentially at intervals in the direction of water flow.

6. The multi-stage oil-water separation wastewater treatment equipment according to claim 1, characterized in that, The second treatment zone is provided with a second oil separator, which is spaced apart from the partition plate; the first oil removal component and the second oil removal component are provided between the second oil separator and the partition plate; the bottom end of the second oil separator is provided with a second guide plate, which is inclined in the direction of counterflow; the second guide plate is spaced apart from the bottom end of the second treatment zone.

7. The multi-stage oil-water separation wastewater treatment equipment according to claim 6, characterized in that, The second treatment zone is provided with a third oil separator, which is spaced apart from the second oil separator. The separator, the second oil separator, and the third oil separator are spaced apart in the direction of water flow. The bottom end of the third oil separator is provided with a third guide plate, which is inclined in the direction of water flow. The third guide plate is spaced apart from the bottom end of the second treatment zone.

8. The multi-stage oil-water separation wastewater treatment equipment according to claim 7, characterized in that, A third oil drain is provided between the second oil separator and the third oil separator, and the third oil drain is located at the top of the second processing area.

9. The multi-stage oil-water separation wastewater treatment equipment according to claim 8, characterized in that, The second treatment area is provided with a discharge outlet, and the third oil separator and the discharge outlet are distributed sequentially at intervals in the direction of water flow.

10. The multi-stage oil-water separation wastewater treatment equipment according to any one of claims 1-9, characterized in that, The bottom of the second treatment zone is provided with multiple sludge discharge hoppers, which are spaced apart in the direction of water flow; the bottom of each sludge discharge hopper is provided with a sludge discharge port.

Images