Oil-containing wastewater air flotation treatment device
By designing an oil-containing wastewater gas float treatment device, using components such as baffle plates, turbulent blast plates and dissolved water releasers, the problems of large amounts of medicines used in the prior art, high cost and complex process are solved, and the low-cost and efficient oil-water separation effect is achieved.
Patent Information
- Application Number
- CN202420706415.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-08
AI Technical Summary
In the prior art, the oil-containing wastewater treatment process has problems such as large amount of agents, high cost and complex process, and a simple and effective low-cost treatment device is urgently needed.
An oil-containing wastewater gas floating treatment device is designed, which is divided into three spaces through the partition plate, and uses components such as baffle plate, turbulent debride plate and dissolved water release to achieve sedimentation, demulsification and oil-water separation of wastewater.
The device does not require the use of chemicals, has low processing costs, simple and efficient process, and can effectively achieve oil-water separation, reducing investment and operation costs.
Smart Images
Figure CN222612989U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oily wastewater treatment, in particular to an oily wastewater flotation treatment device. Background Art
[0002] Common treatment processes for oily wastewater include flocculation, flotation, flocculation-flotation, etc. The flocculation method requires a large amount of chemicals and is costly. Combined with the flotation method, the treatment process is complex and the entire treatment equipment occupies a large area. Both the investment cost and the operating cost are very high. Therefore, there is an urgent need for a simple and effective treatment device that can treat oily wastewater at low cost and high efficiency. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide an oily wastewater flotation treatment device, aiming to solve the technical problems existing in the prior art such as large amount of reagent usage, high cost, and complex process.
[0004] The technical scheme of the utility model is: an oil-containing wastewater flotation treatment device, comprising a device body, wherein the device body is divided into three spaces of upper, middle and lower by a partition, the lower space is connected to the oil-containing wastewater inlet pipe, a baffle is arranged in the lower space, the baffle has a plurality of pieces to form upper and lower baffle channels, and the upper and lower baffle channels are connected with the middle space through a flow pipe; the middle space is divided by a plurality of turbulent demulsification plates, each turbulent demulsification plate is provided with a narrow channel for water flow to pass through, the middle space is connected with a circulation pipeline, and the oil-containing wastewater is fully demulsified by circulating and drawing through the turbulent demulsification plates; the circulation pipeline is also connected to the upper space through a water lifting pipeline, and a plurality of dissolved air water releasers are connected to the water lifting pipeline, and the dissolved air water releasers are also connected to the dissolved air tank through a dissolved air water delivery pipeline, and the demulsified wastewater and dissolved air water are mixed in the dissolved air water releaser and then released; a circulation scraper is arranged on the top of the upper space, and a water outlet pipe is arranged on one side of the middle of the upper space.
[0005] Furthermore, the utility model has two oily wastewater inlet pipes, which are symmetrically arranged on both sides of the device body.
[0006] Furthermore, the flow pipe described in the utility model is arranged in the middle of the partition between the middle and lower spaces, and a filter screen is arranged at the bottom of the flow pipe.
[0007] Furthermore, the turbulent demulsifier plate in the utility model comprises a lower demulsifier plate and an upper demulsifier plate, the lower demulsifier plate is provided with a plurality of fine slits distributed at intervals, and the upper demulsifier plate is provided with a plurality of fine holes distributed at intervals.
[0008] Furthermore, the slits and pores described in the utility model are arranged in a staggered manner.
[0009] Furthermore, the inner diameters of the slits and holes in the utility model gradually decrease from bottom to top and then remain unchanged.
[0010] Furthermore, in the utility model, the circulation pipeline is provided with a first valve and a circulation pump, and the water lifting pipeline is provided with a second valve and a lifting pump.
[0011] Furthermore, the dissolved air water releaser described in the utility model includes a shell, which is divided into two upper and lower spaces by a horizontal sealing plate, and the upper and lower spaces are respectively divided into several diversion areas by multiple vertical diversion plates, one end of the vertical diversion plate is connected to the inner wall of the shell, and the other end points to the center of the shell, and the vertical diversion plates in the upper and lower spaces are symmetrically arranged up and down; connecting pipes are respectively provided in the centers of the upper and lower surfaces of the shell, which are respectively connected to the dissolved air water delivery pipeline and the water lifting pipeline, and the dissolved air water and demulsified wastewater are respectively passed into the upper and lower spaces of the shell from the connecting pipes, and enter each diversion area under the guidance of the vertical diversion plates; the shell is also provided with multiple release pipes, which are connected to the two corresponding diversion areas above and below, and are used to mix the dissolved air water and the demulsified wastewater and then output them.
[0012] Furthermore, a slag trough connected to the upper space is provided on the top of the device body in the utility model, and a circulating oil scraping device is provided between the upper space and the slag trough.
[0013] Compared with the prior art, the utility model has the following advantages: the utility model does not need to use chemicals to treat oily wastewater, has low treatment cost, and is simple and efficient in process; after the wastewater is introduced, the upper and lower baffle channels at the bottom are first used to separate and precipitate heavy impurities, and then the wastewater enters the upper layer through a circulating pumping action, so that the impurity-free oily wastewater is continuously demulsified through two layers of demulsification plates, and the narrow channels on the two layers of demulsification plates are designed to have different inner diameters and are staggered, which can achieve the effects of turbulence and sufficient demulsification; the demulsified wastewater is then lifted to the upper layer and mixed with dissolved air water, and through a specially designed dissolved air water releaser, the mixing is first completed inside the demulsified wastewater and then released in multiple directions, so that the demulsified wastewater can be more fully in contact with the dissolved air water, and the dissolved air water is released and depressurized, and the gas originally dissolved in the water is released and collides in the dissolved air water releaser to form a micro-bubble dispersion flow, which, after mixing with the demulsified wastewater, rapidly absorbs and gathers the demulsified oil droplets and rises, and continuously gathers and increases, and is scraped to the slag tank by the circulating oil scraping device, thereby efficiently realizing oil-water separation. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 It is a specific structural schematic diagram of the dissolved air and water releaser described in the utility model;
[0016] Figure 3 It is a schematic diagram of the internal structure of the dissolved air and water releaser described in the utility model.
[0017] Among them: 1. device body; 2. partition; 3. oily wastewater inlet pipe; 4. baffle; 5. upper and lower baffle channels; 6. circulation pipe; 7. filter screen; 8. turbulent demulsifier; 81. lower demulsifier; 81a. slit; 82. upper demulsifier; 82a. pore; 9. circulation pipeline; 9a. first valve; 9b. circulation pump; 10. water lifting pipeline; 10a. second valve; 10b. lifting pump; 11. dissolved air water releaser; 111. shell; 112. horizontal sealing plate; 113. vertical diverter plate; 114. connecting pipe; 115. release pipe; 12. dissolved air water delivery pipeline; 13. dissolved air tank; 14. circulating oil scraper; 15. outlet pipe; 16. slag trough. DETAILED DESCRIPTION
[0018] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.
[0019] Example:
[0020] The accompanying drawings show a specific implementation of the utility model of an oily wastewater flotation treatment device, as shown in FIG. Figure 1 It mainly includes a device body 1, which is divided into three spaces of upper, middle and lower by a partition 2. Among them, the lower space is connected to an oily wastewater inlet pipe 3, and there are two oily wastewater inlet pipes 3, which are symmetrically arranged on both sides of the device body 1.
[0021] A baffle plate 4 is arranged in the lower space. The baffle plate 4 has a plurality of pieces forming upper and lower baffle channels 5. Wastewater flows in from both sides and flows along the upper and lower baffle channels 5. Heavy impurities are separated and precipitated at the bottom.
[0022] A flow pipe 6 is provided in the middle of the partition plate 2 between the middle and lower spaces, and the upper and lower baffle channels 5 are connected with the middle space through the flow pipe 6, and the impurity-free oily wastewater enters the middle space through the flow pipe 6. A filter screen 7 is provided at the bottom of the flow pipe 6, and only water is allowed to flow through.
[0023] The middle space is divided by two turbulent demulsifier plates 8, and each turbulent demulsifier plate 8 is provided with a narrow channel for water flow to pass through. In this embodiment, the turbulent demulsifier plate 8 includes a lower demulsifier plate 81 and an upper demulsifier plate 82, and the lower demulsifier plate 81 is provided with a plurality of slits 81a distributed at intervals, and the upper demulsifier plate 82 is provided with a plurality of pores 82a distributed at intervals. The slits 81a and the pores 82a are arranged in an alternating manner, and can play a turbulent role when water flows through. The inner diameters of the slits 81a and the pores 82a gradually decrease from bottom to top and then remain unchanged, which can appropriately reduce the resistance to the water flow.
[0024] The middle space is connected with a circulation pipe 9, on which a first valve 9a and a circulation pump 9b are provided. When the circulation pumping action is performed, the first valve 9a is opened, the circulation pump 9b is started, and the impurity-free oily wastewater continuously passes through the two layers of demulsifier plates from bottom to top, hits the demulsifier plates, and is continuously squeezed and released through the slits 81a and the pores 82a, and the oily wastewater is instantly demulsified.
[0025] The circulation pipeline 9 is also connected to the upper space through the water lifting pipeline 10, and a second valve 10a and a lifting pump 10b are provided on the water lifting pipeline 10. When lifting the wastewater, the second valve 10a is opened, the lifting pump 10b is started, the first valve 9a and the circulation pump 9b are closed, and the demulsified wastewater is lifted to the upper layer to mix with the dissolved air water.
[0026] The water extraction pipeline 10 is connected to a plurality of dissolved air water releasers 11, which are also connected to the dissolved air tank 13 through the dissolved air water delivery pipeline 12. The demulsified wastewater and dissolved air water are mixed in the dissolved air water releaser 11 and then released. Figure 2 , Figure 3 The dissolved air water releaser 11 includes a shell 111, and the shell 111 is divided into two upper and lower spaces by a horizontal sealing plate 112. The upper and lower spaces are respectively divided into four diversion areas by four vertical diversion plates 113. One end of the vertical diversion plate 113 is connected to the inner wall of the shell 111, and the other end points to the center of the shell 111. The vertical diversion plates 113 in the upper and lower spaces are symmetrically arranged up and down. Connecting pipes 114 are respectively provided in the center of the upper and lower surfaces of the shell 111, which are respectively connected to the dissolved air water delivery pipeline 12 and the water lifting pipeline 10. The dissolved air water and demulsified wastewater are respectively passed into the upper and lower spaces of the shell 111 from the connecting pipes 114, and enter each diversion area evenly under the guidance of the vertical diversion plates 113. Four release pipes 115 are also provided on the shell 111, corresponding to the four diversion areas respectively. The release pipe 115 is connected to the two corresponding diversion areas above and below, and is used to mix the dissolved air water and the demulsified wastewater and then output.
[0027] Through the specially designed dissolved air water releaser 11, the dissolved air water and demulsified wastewater can be mixed inside it first, and then released in multiple directions. The demulsified wastewater can be in more sufficient contact with the dissolved air water, and the dissolved air water is released and depressurized. The gas originally dissolved in the water is released and collides in the dissolved air water releaser 11 to form a micro-bubble flow. After mixing with the demulsified wastewater, the tiny bubbles quickly absorb the demulsified oil droplets and gather and rise, and continue to gather and grow, floating to the top of the upper space.
[0028] A circulating scraper 14 is provided at the top of the upper space, and a slag trough 16 connected to the upper space is also provided at the top of the device body 1. The circulating scraper 14 is provided between the upper space and the slag trough 16, and is used to scrape the slag to the slag trough 16. A water outlet pipe 15 is provided on one side of the middle of the upper space, and the treated water is discharged from the water outlet pipe 15. The utility model does not need to use chemicals to treat oily wastewater, has low treatment cost, simple and efficient process, and can efficiently achieve oil-water separation.
[0029] Of course, the above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any modifications made according to the spirit of the main technical solution of the utility model should be included in the protection scope of the utility model.
Claims
1. An oily wastewater flotation treatment device, characterized in that: The device comprises a device body (1), wherein the device body (1) is divided into three spaces, namely, upper, middle and lower spaces, by a partition (2); the lower space is connected to an oily wastewater inlet pipe (3); a baffle (4) is arranged in the lower space; the baffle (4) has a plurality of pieces forming upper and lower baffle channels (5); the upper and lower baffle channels (5) are connected to the middle space through a flow pipe (6); the middle space is divided by a plurality of turbulent demulsifier plates (8), each turbulent demulsifier plate (8) is provided with a narrow channel for water flow to pass through; the middle space is connected to a circulation pipe (9); The oily wastewater is circulated and pumped through a turbulent demulsifier plate (8) for full demulsification; the circulation pipeline (9) is also connected to the upper space through a water lifting pipeline (10); a plurality of dissolved air water releasers (11) are connected to the water lifting pipeline (10); the dissolved air water releasers (11) are also connected to a dissolved air tank (13) through a dissolved air water delivery pipeline (12); the demulsified wastewater and dissolved air water are mixed in the dissolved air water releaser (11) and then released; a circulating oil scraper (14) is provided at the top of the upper space, and a water outlet pipe (15) is provided on one side of the middle of the upper space.
2. The oily wastewater flotation treatment device according to claim 1 is characterized by: There are two oily wastewater inlet pipes (3) which are symmetrically arranged on both sides of the device body (1).
3. The oily wastewater flotation treatment device according to claim 1 is characterized by: The circulation pipe (6) is arranged in the middle of the partition (2) between the middle and lower spaces, and a filter screen (7) is arranged at the bottom of the circulation pipe (6).
4. The oily wastewater flotation treatment device according to claim 1 is characterized by: The turbulent demulsifier plate (8) comprises a lower demulsifier plate (81) and an upper demulsifier plate (82). The lower demulsifier plate (81) is provided with a plurality of fine slits (81a) distributed at intervals, and the upper demulsifier plate (82) is provided with a plurality of fine holes (82a) distributed at intervals.
5. The oily wastewater flotation treatment device according to claim 4 is characterized by: The slits (81a) and the holes (82a) are arranged in a staggered manner.
6. The oily wastewater flotation treatment device according to claim 4 is characterized by: The inner diameters of the fine slits (81a) and the fine holes (82a) gradually decrease from bottom to top and then remain unchanged.
7. The oily wastewater flotation treatment device according to claim 1 is characterized by: The circulation pipeline (9) is provided with a first valve (9a) and a circulation pump (9b), and the water lifting pipeline (10) is provided with a second valve (10a) and a lifting pump (10b).
8. The oily wastewater flotation treatment device according to claim 1 is characterized by: The dissolved air water releaser (11) comprises a shell (111), wherein the shell (111) is divided into two upper and lower spaces by a horizontal sealing plate (112), and the upper and lower spaces are respectively divided into a plurality of diversion areas by a plurality of vertical diversion plates (113), wherein one end of the vertical diversion plate (113) is connected to the inner wall of the shell (111) and the other end points to the center of the shell (111), and the vertical diversion plates (113) in the upper and lower spaces are symmetrically arranged in the upper and lower sides; The shell (111) is provided with a connecting pipe (114) at the center, which is respectively connected to the dissolved air water delivery pipe (12) and the water lifting pipe (10); the dissolved air water and the demulsified waste water are respectively introduced into the upper and lower spaces of the shell (111) from the connecting pipe (114), and enter each diversion area under the guidance of the vertical diversion plate (113); the shell (111) is also provided with a plurality of release pipes (115), which are connected to the two corresponding diversion areas at the upper and lower parts, and are used for mixing the dissolved air water and the demulsified waste water and then outputting them.
9. The oily wastewater flotation treatment device according to claim 1, characterized in that: A slag trough (16) communicating with the upper space is provided on the top of the device body (1), and a circulating oil scraping device (14) is provided between the upper space and the slag trough (16).