Resource utilization device for petrochemical oily wastewater

Abstract

The invention discloses a resource utilization device for petrochemical oily wastewater, and relates to the technical field of industrial wastewater recovery. The sewage treatment device comprises a primary sedimentation tank, a water inlet pipe is fixedly mounted at the top of one side of the primary sedimentation tank, a drainage port is formed in the other side of the primary sedimentation tank, a drainage net plate is fixedly mounted in the drainage port, and an electric gate communicated with the drainage port is fixedly mounted on one side of the primary sedimentation tank. By arranging the movable oil discharge mechanism, when floating oil is extracted, suspended sludge in the floating oil can be intercepted to the outer side by the filter screen, the effect of primary filtering is achieved, and subsequent resourceful treatment of oil can be simplified in cooperation with centrifugal separation of the centrifugal pump machine; and meanwhile, the conversion motor can regularly drive an internal conversion wheel plate to rotate through a control gear and a driven gear ring which are meshed with each other, the position of a filtering opening is changed, a filtering net corresponding to the bottom end of a transition pipe is regularly replaced, and it is guaranteed that the floating oil suction efficiency cannot be reduced due to sludge accumulated on the filtering net.

Description

Technical Field

[0001] This invention relates to the field of industrial wastewater recycling technology, specifically to a device for the resource utilization of petrochemical oily wastewater. Background Technology

[0002] The main pollutants in petrochemical oily wastewater are complex compounds composed of cyclic and acyclic saturated monocarboxylic acids, which are difficult to volatilize and biodegrade. However, the waste oil obtained after treating petrochemical oily wastewater can be further processed into biodiesel, industrial soap base, etc. Industrial waste oil can be reused after purification treatment, reducing the oil cost for enterprises. The wastewater after deep treatment can be used as production water for enterprises and municipal miscellaneous water, reducing the amount of fresh water used and lowering water costs. Therefore, the resource utilization of petrochemical oily wastewater is very necessary.

[0003] The pretreatment stage of petrochemical oily wastewater mainly adopts physical methods, such as oil removal, filtration, flocculation sedimentation, centrifugation, and air flotation. Among them, the oil removal stage mainly uses inclined plate sedimentation and air flotation to achieve separation technology. However, in practical applications, the current air flotation oil removal technology requires the use of an oil skimmer to remove the floating oil on the liquid surface. But in the process of collecting the floating oil, suspended matter, scum, flocculents, etc. near the liquid surface are also removed, adding more complicated procedures to the subsequent treatment. Therefore, a resource utilization device for petrochemical oily wastewater is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the problem that current air flotation oil removal technology requires the use of an oil skimmer to remove floating oil from the liquid surface during practical application. However, during the collection of floating oil, suspended matter, scum, flocculents, etc., near the liquid surface are mixed and removed, adding more complicated procedures to subsequent treatment. This invention provides a resource utilization device for petrochemical oily wastewater.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution: A resource utilization device for petrochemical oily wastewater includes a primary sedimentation tank. An inlet pipe is fixedly installed on the top of one side of the primary sedimentation tank, and a drain outlet is opened on the other side. A drainage screen is fixedly installed inside the drain outlet. An electric gate connected to the drain outlet is fixedly installed on one side of the primary sedimentation tank, and a drain pipe is fixedly installed on the other side of the electric gate. Multiple inclined and evenly distributed sedimentation screens are fixedly installed inside the primary sedimentation tank. Multiple bubble input pipes are fixedly installed inside the primary sedimentation tank, located on both sides of the multiple sedimentation screens. Multiple [unclear - possibly related to a device or equipment] are fixedly installed around the periphery of each bubble input pipe. The bubble input pipe is connected to a long discharge pipe. A microbubble generator is installed on one side of the primary sedimentation tank. A bubble liquid delivery pipe is fixedly installed at the liquid delivery end of the microbubble generator. One end of each of the multiple bubble input pipes extends to the outside of the primary sedimentation tank and is connected to the bubble liquid delivery pipe. A hollow support frame is fixedly installed on the top of the primary sedimentation tank. Two traveling linear modules are fixedly installed on the top of the hollow support frame. A common movable oil discharge mechanism is provided between the drive ends of the two traveling linear modules. The movable oil discharge mechanism is used to extract oil from the surface of the oily wastewater inside the primary sedimentation tank by moving back and forth and using negative pressure pumping.

[0006] Furthermore, the movable oil discharge mechanism includes a C-shaped outer shell fixedly installed between the drive ends of the two traveling linear modules. An oil delivery pipe communicating with the interior of the C-shaped outer shell is fixedly installed on the top of the outer shell. An oil delivery hose is fixedly installed at the top of the oil delivery pipe. A pressure extraction pipe is provided on one side of the primary sedimentation tank, and the oil delivery hose is connected to the pressure extraction pipe. A conversion wheel plate is rotatably installed inside the C-shaped outer shell. Multiple filter ports are opened on the periphery of the conversion wheel plate, and filter screens are fixedly installed inside each filter port. An outer shell plate is fixedly installed on one side of the C-shaped outer shell, and a central frame is fixedly installed on one side of the outer shell plate. One end of the central frame... A vertically arranged transition tube extends into the interior of the C-shaped outer shell and is fixedly installed. The position of the transition tube corresponds to the position of the oil conveying pipe. Both ends of the transition tube are in contact with the inner wall of the conversion wheel plate, and the bottom end of the oil conveying pipe is in contact with the outer wall of the conversion wheel plate. A stabilizing disc is fixedly sleeved on the central frame. A driven gear ring is rotatably installed between the C-shaped outer shell and the stabilizing disc. One side of the driven gear ring extends into the interior of the C-shaped outer shell and is fixedly connected to the conversion wheel plate. A conversion motor is fixedly installed on one side of the outer disc. The output shaft of the conversion motor extends into the interior of the outer disc and is fixedly sleeved with a control gear that meshes with the driven gear ring.

[0007] Furthermore, a centrifugal pump is installed on one side of the primary sedimentation tank, and a pressure pumping pipe is fixedly installed at the output end of the centrifugal pump. One end of the oil delivery hose is connected to the input end of the centrifugal pump.

[0008] Furthermore, filter scrapers are fixedly installed on the inner walls of both sides of the bottom of the C-shaped outer shell, and one end of each of the two filter scrapers is in contact with the outer wall of the conversion wheel plate.

[0009] Furthermore, a connecting pipe is fixedly installed on the side wall of the C-shaped outer shell. One end of the connecting pipe extends into the interior of the C-shaped outer shell and is fixedly installed with an absorption plate. The absorption plate is inclined and located above one of the filter cake scrapers. A pressure slag feeding pipe is provided on one side of the primary sedimentation tank. A support frame is fixedly installed on the top of the primary sedimentation tank near the electric gate. A diversion slag feeding pipe is fixedly installed on the top of the support frame. The tops of the connecting pipe and the diversion slag feeding pipe are both horizontally arranged and adapted to each other. The bottom end of the diversion slag feeding pipe is connected to the pressure slag feeding pipe.

[0010] Furthermore, a secondary sedimentation tank is fixedly installed at the bottom of the primary sedimentation tank. A vertically arranged hydraulic rod is fixedly installed inside the secondary sedimentation tank. A lifting frame is fixedly installed at the telescopic end of the hydraulic rod. A telescopic sleeve is fixedly fitted onto the outside of the hydraulic rod. Multiple auxiliary telescopic rods are fixedly installed inside the secondary sedimentation tank, with their telescopic ends fixedly installed at the bottom of the lifting frame. Multiple sinkholes communicating with the secondary sedimentation tank are opened at the bottom of the primary sedimentation tank. Multiple sealing slide rods adapted to the sinkholes are fixedly installed at the top of the lifting frame. An inclined plate is fixedly installed inside the secondary sedimentation tank. Multiple evenly distributed sludge discharge holes are opened on the inner wall of the secondary sedimentation tank near the bottom of the inclined plate. A screw conveyor is fixedly installed on one side of the secondary sedimentation tank. Multiple sludge discharge holes are connected to the interior of the screw conveyor. The conveying end of the screw conveyor is connected to one end of the pressure sludge delivery pipe.

[0011] Furthermore, a power water pipe is provided on one side of the primary sedimentation tank, and the other ends of the plurality of bubble input pipes extend to the outside of the primary sedimentation tank and are connected to the power water pipe.

[0012] Furthermore, a diversion pipe connected to the power water pipe is fixedly installed on one side of the power water pipe, a three-way water supply pipe is fixedly installed on the top of the primary sedimentation tank, the three-way water supply pipe is connected to the diversion pipe, and two push pipes parallel to the traveling linear module are fixedly installed on the inner wall of the top of the primary sedimentation tank, both of which are connected to the three-way water supply pipe.

[0013] The beneficial effects of this invention are as follows: 1. This invention, by setting up an active oil discharge mechanism, ensures that during the extraction of floating oil, suspended sludge in the floating oil is intercepted on the outside by the filter screen, playing a primary filtration role. Combined with the centrifugal separation of the centrifugal pump, it simplifies the subsequent resource-based treatment of the oil. At the same time, the conversion motor periodically drives the internal conversion wheel plate to rotate through the meshing control gear and driven gear ring, changing the position of the filter port and periodically replacing the filter screen at the bottom of the transition pipe, ensuring that the extraction efficiency of floating oil is not reduced due to the sludge accumulated on the filter screen. 2. By setting up a pusher pipe, the present invention enables high-pressure water to be delivered sequentially through the power water pipe, the diversion pipe, and the three-way water supply pipe to the pusher pipes on both sides during the process of the active oil discharge mechanism extracting floating oil. Under the diversion effect of each small drainage end of the pusher pipe, a micro water flow is formed below the surface of the wastewater, which in turn pushes the floating oil towards the center, so that the floating oil is concentrated on the travel path of the C-shaped outer shell, thereby improving the floating oil extraction efficiency and accelerating the discharge of floating oil. 3. By setting up a filter scraper, when the secondary sedimentation tank discharges sludge, the C-shaped outer shell moves to one side of the electric gate. At this time, the connecting pipe and the diversion sludge delivery pipe are connected. The sludge accumulated on the top of the filter scraper will be pumped into the connecting pipe by the absorption plate, and then transported to the pressure sludge delivery pipe for unified transfer through the diversion sludge delivery pipe. This achieves the initial cleaning of the conversion wheel plate and filter screen, ensuring the normal operation of the subsequent oil discharge work of the active oil discharge mechanism. 4. This invention, by setting up an air bubble input pipe, allows water to be sprayed into the interior of the primary sedimentation tank after the sludge is discharged. This sprays water to flush the inner wall of the primary sedimentation tank, as well as the side walls of the sedimentation screen and drainage screen, washing away any remaining sludge. Simultaneously, some long discharge pipes can spray water towards the C-shaped outer casing, thus flushing the side walls of the C-shaped outer casing and the conversion wheel plate and filter screen inside the opening of the C-shaped outer casing. This achieves the cleaning of the primary sedimentation tank and the movable oil discharge mechanism, ensuring that the resource utilization device for petrochemical oily wastewater always has sufficient wastewater treatment capacity. Attached Figure Description

[0014] Figure 1 This is a first-view three-dimensional structural diagram of the present invention; Figure 2 This is the present invention. Figure 1 Schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram of the second-view three-dimensional structure of the present invention; Figure 4 This is a first-view three-dimensional structural diagram of the interior of the primary sedimentation tank of the present invention; Figure 5 This is a two-dimensional structural diagram of the interior of the primary sedimentation tank of the present invention from a second perspective; Figure 6 This is a schematic diagram of the three-dimensional structure of the bubble input tube of the present invention; Figure 7 This is a three-dimensional structural diagram of the active oil discharge mechanism of the present invention; Figure 8 This is a schematic diagram of the internal three-dimensional structure of the outer disc of the present invention; Figure 9 This is a schematic diagram of the internal three-dimensional structure of the C-shaped outer shell of the present invention; Figure 10 This is a schematic diagram of the internal three-dimensional structure of the secondary sedimentation tank of the present invention; Attached reference numerals: 1. Primary sedimentation tank; 2. Inlet pipe; 3. Drainage screen; 4. Electric gate; 5. Drainage pipe; 6. Sedimentation screen; 7. Bubble input pipe; 8. Long strip discharge pipe; 9. Microbubble generator; 10. Bubble liquid delivery pipe; 11. Hollowed-out support frame; 12. Traveling linear module; 13. C-shaped outer shell; 14. Oil delivery pipe; 15. Pressure extraction pipe; 16. Conversion wheel plate; 17. Filter screen; 18. Central frame; 19. Transition pipe; 20. Driven gear ring; 21. Control gear; 22. Outer disc; 2 3. Converter motor; 24. Filter scraper; 25. Absorption plate; 26. Connecting pipe; 27. Pressure slag delivery pipe; 28. Support frame; 29. ​​Diversion slag delivery pipe; 30. Secondary sedimentation tank; 3001. Sludge discharge hole; 31. Hydraulic rod; 32. Lifting frame; 33. Telescopic sleeve; 34. Auxiliary telescopic rod; 35. Sealing slide rod; 36. Inclined plate; 37. Power water pipe; 38. Diversion pipe; 39. T-junction water pipe; 40. Push pipe; 41. Oil delivery hose; 42. Centrifugal pump; 43. Screw conveyor; 44. Stabilizing disc. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0017] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0018] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention 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 limiting the present invention.

[0019] like Figures 1 to 10 As shown, a resource utilization device for petrochemical oily wastewater includes a primary sedimentation tank 1, such as... Figure 1 , Figure 3 As shown, specifically, an inlet pipe 2 is fixedly installed on the top of one side of the primary sedimentation tank 1, and a drain outlet is opened on the other side of the primary sedimentation tank 1. A drain screen 3 is fixedly installed inside the drain outlet. An electric gate 4 connected to the drain outlet is fixedly installed on one side of the primary sedimentation tank 1, and a drain pipe 5 is fixedly installed on the other side of the electric gate 4. Multiple inclined and evenly distributed sedimentation screens 6 are fixedly installed inside the primary sedimentation tank 1. Multiple air bubble input pipes 7 are fixedly installed inside the primary sedimentation tank 1, and the multiple air bubble input pipes 7 are located on both sides of the multiple sedimentation screens 6, as shown. Figure 6 As shown, multiple long discharge pipes 8 connected to the bubble input pipe 7 are fixedly installed around the bubble input pipe 7. A microbubble generator 9 is provided on one side of the primary sedimentation tank 1. A bubble liquid delivery pipe 10 is fixedly installed at the liquid delivery end of the microbubble generator 9. One end of each of the multiple bubble input pipes 7 extends to the outside of the primary sedimentation tank 1 and is connected to the bubble liquid delivery pipe 10. A hollow support frame 11 is fixedly installed on the top of the primary sedimentation tank 1.

[0020] In this embodiment, the primary sedimentation tank 1 is boat-shaped, and the drainage mesh plate 3 is installed at an angle on one side of the primary sedimentation tank 1. Multiple sedimentation mesh plates 6 are parallel to the drainage mesh plate 3, with the front of the sedimentation mesh plate 6 facing the direction of water inlet. The long strip discharge pipes 8 on the bubble input pipe 7 are placed on both sides of the bubble input pipe 7, respectively facing upward at the side wall of the water inlet of the primary sedimentation tank 1 and the back of the sedimentation mesh plate 6, and facing downward at the drainage mesh plate 3 and the front of the sedimentation mesh plate 6.

[0021] More specifically, when the petrochemical oily wastewater resource utilization device is in use, wastewater is transported into the primary sedimentation tank 1 through the inlet pipe 2. The wastewater accumulates in the primary sedimentation tank 1. At this time, the microbubble generator 9 transports microbubble mixture to multiple bubble input pipes 7 through the bubble liquid delivery pipe 10, so that the oil in the wastewater adheres to the microbubbles and rises faster, thereby realizing the air flotation separation of the oil. At the same time, most of the suspended matter, scum, flocculents and other substances in the wastewater will be intercepted and stored on the sedimentation screen plate 6 and drainage screen plate 3 facing the water inlet direction, forming sludge and realizing the initial stratification of the wastewater.

[0022] like Figure 1 , Figure 3 As shown, two linear motion modules 12 are fixedly installed on the top of the hollow support frame 11. A common movable oil discharge mechanism is provided between the drive ends of the two linear motion modules 12. This movable oil discharge mechanism is used to extract oil from the surface of the oily wastewater inside the primary sedimentation tank 1 by means of back-and-forth movement and negative pressure pumping. Figure 7 , Figure 8 , Figure 9As shown, specifically, the movable oil discharge mechanism includes a C-shaped outer shell 13 fixedly installed between the drive ends of two traveling linear modules 12. An oil conveying pipe 14, communicating with the interior of the C-shaped outer shell 13, is fixedly installed on the top of the C-shaped outer shell 13. An oil delivery hose 41 is fixedly installed at the top of the oil conveying pipe 14. A pressure extraction pipe 15 is provided on one side of the primary sedimentation tank 1, and the oil delivery hose 41 is connected to the pressure extraction pipe 15. A centrifugal pump 42 is provided on one side of the primary sedimentation tank 1. The pressure extraction pipe 15 is fixedly installed at the output end of the centrifugal pump 42, and one end of the oil delivery hose 41 is connected to the input end of the centrifugal pump 42. In this embodiment, one end of the pressure extraction pipe 15 is connected to a lower-level oil processing device with extraction pressure. A circulating pump group with interchangeable conveying pipeline directions is installed inside the centrifugal pump 42. A conversion wheel plate 16 is rotatably installed inside the C-shaped outer shell 13, and multiple filter ports are opened on the periphery of the conversion wheel plate 16. The filter inlet is fixedly fitted with a filter screen 17. An outer disc 22 is fixedly fitted on one side of the C-shaped outer shell 13. A central frame 18 is fixedly fitted on one side of the outer disc 22. One end of the central frame 18 extends into the interior of the C-shaped outer shell 13 and is fixedly fitted with a vertically arranged transition pipe 19. The position of the transition pipe 19 corresponds to the position of the oil conveying pipe 14. Both ends of the transition pipe 19 are in contact with the inner wall of the conversion wheel plate 16. The bottom end of the oil conveying pipe 14 is in contact with the outer wall of the conversion wheel plate 16. A stabilizing disc 44 is fixedly fitted on the central frame 18. A driven gear ring 20 is rotatably installed between the C-shaped outer shell 13 and the stabilizing disc 44. One side of the driven gear ring 20 extends into the interior of the C-shaped outer shell 13 and is fixedly connected to the conversion wheel plate 16. A conversion motor 23 is fixedly fitted on one side of the outer disc 22. The output shaft of the conversion motor 23 extends into the interior of the outer disc 22 and is fixedly fitted with a control gear 21 that meshes with the driven gear ring 20.

[0023] In this embodiment, the linear motion module 12 can be any linear actuator commonly used in the prior art, such as a linear motor module. The electromagnetic force of the motor stator drives the mover, which serves as the driving end, to move linearly. Alternatively, mechanisms such as screw thread sleeves, belts and pulleys, chains and sprockets can be used to control the linear motion of the driving end through threaded guidance or meshing. In addition to electrical energy, components such as cylinders and hydraulic rods 31 can also be used as power sources. The linear motion module 12 in this embodiment can adopt technical solutions including but not limited to the above, depending on the actual situation. The driving end of the linear motion module 12 can be directly connected to the C-shaped outer shell 13 through a bracket, or the C-shaped outer shell 13 can be suspended by a lifting mechanism so that the C-shaped outer shell 13 can be adjusted up and down according to the wastewater level.

[0024] More specifically, by setting up an active oil discharge mechanism, after a large amount of oil rises to the surface, the traveling linear module 12 drives the C-shaped outer shell 13 to move along the direction from the inlet to the outlet in the middle slide of the hollow support frame 11. The bottom opening of the C-shaped outer shell 13 is close to the liquid surface. The centrifugal pump 42 sequentially sucks up the floating oil on the liquid surface through the oil delivery hose 41, oil delivery pipe 14, and transition pipe 19 until the one-way stroke of the traveling linear module 12 ends. After waiting for a period of time, after the oil rises again, the C-shaped outer shell 13 returns to continue sucking up the floating oil. This operation is repeated until no more large-scale floating oil appears, completing one round of extraction. The floating oil is then sent into the centrifugal pump 42 and subjected to centrifugal force. The oil is separated from the residual wastewater by the centrifugal action. The separated oil is then transported to the next-stage oil processing equipment through the pressure extraction pipe 15 to complete the initial recovery of oil resources. During the extraction of floating oil, the suspended sludge in the floating oil is intercepted on the outside by the filter screen 17, which plays a primary filtration role. Combined with the centrifugal separation of the centrifugal pump 42, the subsequent resource-based treatment of the oil can be simplified. At the same time, the conversion motor 23 will periodically drive the internal conversion wheel plate 16 to rotate through the meshing control gear 21 and driven gear ring 20 to change the position of the filter port, so that the filter screen 17 corresponding to the bottom of the transition pipe 19 is replaced regularly, ensuring that the oil absorption efficiency is not reduced due to the sludge accumulated on the filter screen 17.

[0025] like Figure 1 , Figure 4 As shown, specifically, a diversion pipe 38 connected to the power water pipe 37 is fixedly installed on one side of the power water pipe 37, a three-way water supply pipe 39 is fixedly installed on the top of the primary sedimentation tank 1, the three-way water supply pipe 39 is connected to the diversion pipe 38, and two push pipes 40 parallel to the traveling linear module 12 are fixedly installed on the inner wall of the top of the primary sedimentation tank 1, both of which are connected to the three-way water supply pipe 39.

[0026] More specifically, by setting up the push pipe 40, during the process of the active oil discharge mechanism extracting floating oil, the high-pressure water source will sequentially deliver water flow through the power water pipe 37, the diversion pipe 38, and the three-way water supply pipe 39 to the push pipes 40 on both sides. Then, under the diversion effect of each small drainage end of the push pipe 40, a micro water flow is formed below the surface of the wastewater, which in turn pushes the floating oil towards the center, so that the floating oil is concentrated on the travel path of the C-shaped outer casing 13, thereby improving the floating oil absorption efficiency and accelerating the discharge of floating oil.

[0027] like Figure 10As shown, specifically, a secondary sedimentation tank 30 is fixedly installed at the bottom of the primary sedimentation tank 1. A vertically installed hydraulic rod 31 is fixedly installed inside the secondary sedimentation tank 30. A lifting frame 32 is fixedly installed at the telescopic end of the hydraulic rod 31. A telescopic sleeve 33 is fixedly fitted onto the outside of the hydraulic rod 31. Multiple auxiliary telescopic rods 34 are fixedly installed inside the secondary sedimentation tank 30. The telescopic ends of the multiple auxiliary telescopic rods 34 are all fixedly installed at the bottom of the lifting frame 32. Multiple openings are provided at the bottom of the primary sedimentation tank 1 that correspond to those of the secondary sedimentation tank 30. The sinking port is connected, and the top of the lifting frame 32 is fixedly installed with multiple sealing slide rods 35 that are compatible with the sinking port. An inclined plate 36 is fixedly installed inside the secondary sedimentation tank 30. Multiple evenly distributed sludge discharge holes 3001 are opened on the inner wall of the secondary sedimentation tank 30 near the bottom end of the inclined plate 36. A screw conveyor 43 is fixedly installed on one side of the secondary sedimentation tank 30. The multiple sludge discharge holes 3001 are all connected to the interior of the screw conveyor 43. The conveying end of the screw conveyor 43 is connected to one end of the pressure sludge delivery pipe 27.

[0028] In this embodiment, one end of the pressure slag delivery pipe 27 is connected to a sludge treatment device with pumping pressure.

[0029] More specifically, by setting up a secondary sedimentation tank 30, after the floating oil is discharged, the sediment in the primary sedimentation tank 1 has also formed. At this time, the electric gate 4 is opened, and the wastewater with the oil and sludge removed is transported to the next-level work station for further treatment through the drainage pipe 5. After the wastewater is drained, the hydraulic rod 31 inside the secondary sedimentation tank 30 drives the lifting frame 32 to descend, causing each sealing slide rod 35 to disengage from the sinking hole. The settled sludge falls into the secondary sedimentation tank 30 through the sinking hole. The sludge on the inner wall of the primary sedimentation tank 1 and the side walls of the sedimentation screen plate 6 and the drainage screen plate 3 also slides down under the action of the bottom sludge. After the sludge falls into the secondary sedimentation tank 30, it will continue to be discharged from each sludge discharge hole 3001 under the inclined guiding action of the inclined plate 36, and finally be transferred to the next-level work station for further treatment under the conveying of the screw conveyor 43 and the pumping of the pressure sludge delivery pipe 27, realizing the dual preliminary recovery of wastewater and sludge resources.

[0030] like Figure 1 , Figure 2 , Figure 9As shown, specifically, filter scrapers 24 are fixedly installed on the inner walls of both sides of the bottom of the C-shaped outer shell 13. One end of each filter scraper 24 is in contact with the outer wall of the conversion wheel plate 16. A connecting pipe 26 is fixedly installed on the side wall of the C-shaped outer shell 13. One end of the connecting pipe 26 extends into the interior of the C-shaped outer shell 13 and is fixedly installed with an absorption plate 25. The absorption plate 25 is inclined and located above one of the filter scrapers 24. A pressure slag feeding pipe 27 is provided on one side of the primary sedimentation tank 1. A support frame 28 is fixedly installed on the top of the side of the primary sedimentation tank 1 near the electric gate 4. A diversion slag feeding pipe 29 is fixedly installed on the top of the support frame 28. The tops of the connecting pipe 26 and the diversion slag feeding pipe 29 are both horizontally set and adapted to each other. The bottom end of the diversion slag feeding pipe 29 is connected to the pressure slag feeding pipe 27.

[0031] More specifically, by setting up filter scraper 24, each time the switching wheel plate 16 rotates and changes position, one side of the filter scraper 24 scrapes off the sludge from the outer wall of the switching wheel plate 16 and the filter screen 17, and the sludge falls into the primary sedimentation tank 1. The other side of the filter scraper 24 will pick up the small amount of sludge remaining on the switching wheel plate 16 and the filter screen 17 and accumulate it on the top of the filter scraper 24. When the secondary sedimentation tank 30 discharges sludge, the C-shaped outer shell 13 moves to one side of the electric gate 4. At this time, the connecting pipe 26 is inserted into the diversion sludge delivery pipe 29. The sludge accumulated on the top of the filter scraper 24 will be pumped into the connecting pipe 26 by the absorption plate 25, and then transported to the pressure sludge delivery pipe 27 through the diversion sludge delivery pipe 29 for unified transfer, thereby achieving the initial cleaning of the switching wheel plate 16 and the filter screen 17, and ensuring the normal operation of the subsequent oil discharge work of the active oil discharge mechanism.

[0032] like Figure 3 , Figure 5 As shown, specifically, a power water pipe 37 is provided on one side of the primary sedimentation tank 1, and the other ends of multiple bubble input pipes 7 extend to the outside of the primary sedimentation tank 1 and are connected to the power water pipe 37.

[0033] In this embodiment, one end of the power water pipe 37 is connected to a high-pressure water source.

[0034] More specifically, by setting up bubble input pipes 7, after the sludge is discharged, the secondary sedimentation tank 30 re-closes the sink hole. At this time, the power water pipe 37 delivers high-pressure water flow to each bubble input pipe 7, so that the water flow is sprayed into the interior of the primary sedimentation tank 1 through each long strip discharge pipe 8, thereby flushing the inner wall of the primary sedimentation tank 1 and the side walls of the sedimentation screen plate 6 and the drainage screen plate 3, and washing away the residual sludge. At the same time, the linear motion module 12 drives the movable oil discharge mechanism to move, and adjusts the relative position of the movable oil discharge mechanism and each long strip discharge pipe 8 in real time, so that some of the long strip discharge pipes 8 can spray water flow toward the C-shaped outer shell 13, thereby flushing the side wall of the C-shaped outer shell 13 and the conversion wheel plate 16 and filter screen 17 inside the opening of the C-shaped outer shell 13, realizing the cleaning of the primary sedimentation tank 1 and the movable oil discharge mechanism, ensuring that the resource utilization device for petrochemical oily wastewater always has sufficient wastewater treatment capacity.

[0035] In summary: Before treatment: Wastewater is transported into the primary sedimentation tank 1 through the inlet pipe 2 and accumulates in the primary sedimentation tank 1. At this time, the microbubble generator 9 transports microbubble mixture to multiple bubble input pipes 7 through the bubble liquid delivery pipe 10, so that the oil in the wastewater adheres to the microbubbles and rises faster, thereby realizing the air flotation separation of the oil. At the same time, most of the suspended matter, scum, flocculents and other substances in the wastewater will be intercepted and stored on the sedimentation screen plate 6 and drainage screen plate 3 facing the water inlet direction, forming sludge and achieving the initial stratification of wastewater. During processing: After a large amount of oil rises to the surface, the linear motion module 12 drives the C-shaped outer casing 13 to move along the direction from the inlet to the outlet in the middle slide of the hollow support frame 11. The bottom opening of the C-shaped outer casing 13 is close to the liquid surface. The centrifugal pump 42 sequentially sucks up the floating oil on the liquid surface through the oil delivery hose 41, oil delivery pipe 14, and transition pipe 19 until the one-way stroke of the linear motion module 12 ends. After waiting for a period of time, when the oil rises again, the C-shaped outer casing 13 returns to continue sucking up the floating oil. This operation is repeated until there is no longer a large amount of floating oil. The high-pressure water source will sequentially deliver water to the push pipes 40 on both sides through the power water pipe 37, the diversion pipe 38, and the three-way water delivery pipe 39. Then, water flows through the various small outlets in the push pipes 40. Under the diversion effect of the water end, a micro water flow is formed below the liquid surface of the wastewater, which in turn pushes the floating oil towards the middle, so that the floating oil is concentrated on the travel path of the C-shaped outer shell 13. The suspended sludge in the floating oil will be intercepted on the outside by the filter screen 17. At the same time, the conversion motor 23 will periodically drive the internal conversion wheel plate 16 to rotate and change the position of the filter port, so that the filter screen 17 corresponding to the bottom of the transition pipe 19 will be replaced periodically. Each time the conversion wheel plate 16 rotates and changes position, the filter scraper 24 on one side scrapes the sludge off the outer wall of the conversion wheel plate 16 and the filter screen 17, and the sludge falls into the primary sedimentation tank 1. The filter scraper 24 on the other side will hang up and accumulate the small amount of sludge remaining on the conversion wheel plate 16 and the filter screen 17 on the top of the filter scraper 24. After treatment: The floating oil is sent to centrifugal pump 42, where it is separated from the residual wastewater by centrifugal force. The separated oil is then transported to the next stage oil treatment equipment via pressure pumping pipe 15. After the floating oil is discharged, the sediment in the primary sedimentation tank 1 has also formed. At this time, the electric gate 4 is opened, and the wastewater from which the oil and sludge have been removed is transported to the next stage workstation for further treatment via drain pipe 5. After the wastewater is drained, the hydraulic rod 31 inside the secondary sedimentation tank 30 drives the lifting frame 32 to descend, causing each sealing slide rod 35 to disengage from the sinkhole, and the sediment... The sludge from the sedimentation tank falls into the secondary sedimentation tank 30 through the settling holes. Sludge on the inner wall of the primary sedimentation tank 1, as well as on the side walls of the sedimentation mesh plate 6 and drainage mesh plate 3, also slides down due to the pull of the sludge at the bottom. After falling into the secondary sedimentation tank 30, the sludge continues to be discharged from the various sludge discharge holes 3001 under the inclined guiding action of the inclined plate 36, and is finally transferred to the next stage workstation for further processing by the conveyor belt 43 and the pressure sludge delivery pipe 27. When the secondary sedimentation tank 30 discharges sludge, the C-shaped outer casing 13 moves to the electric... On one side of the gate 4, the connecting pipe 26 is inserted into the diversion sludge conveying pipe 29. The sludge accumulated on the top of the filter sludge scraper 24 is pumped by the absorption plate 25 into the connecting pipe 26, and then transported through the diversion sludge conveying pipe 29 to the pressure sludge conveying pipe 27 for unified transfer, thereby achieving the initial cleaning of the conversion wheel plate 16 and the filter screen 17. After the sludge is discharged, the secondary sedimentation tank 30 re-closes the sink hole. At this time, the power water pipe 37 delivers high-pressure water to each air bubble input pipe 7, so that the water flows through each long discharge pipe 8 to... The internal spray of the primary sedimentation tank 1 washes the inner wall of the primary sedimentation tank 1 and the side walls of the sedimentation mesh plate 6 and the drainage mesh plate 3, and washes away the residual sludge. At the same time, the linear module 12 drives the movable oil discharge mechanism to move and adjusts the relative position of the movable oil discharge mechanism and each long discharge pipe 8 in real time, so that some of the long discharge pipes 8 can spray water towards the C-shaped outer shell 13, thereby washing the side wall of the C-shaped outer shell 13 and the conversion wheel plate 16 and filter screen 17 inside the opening of the C-shaped outer shell 13.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A resource utilization device for petrochemical oily wastewater, characterized in that, The system includes a primary sedimentation tank (1), with an inlet pipe (2) fixedly installed on the top of one side of the primary sedimentation tank (1). A drain outlet is provided on the other side of the primary sedimentation tank (1), and a drain screen (3) is fixedly installed inside the drain outlet. An electric gate (4) connected to the drain outlet is fixedly installed on one side of the primary sedimentation tank (1), and a drain pipe (5) is fixedly installed on the other side of the electric gate (4). Multiple inclined and evenly distributed sedimentation screens (6) are fixedly installed inside the primary sedimentation tank (1). Multiple bubble input pipes (7) are fixedly installed inside the primary sedimentation tank (1), with each bubble input pipe (7) located on both sides of the multiple sedimentation screens (6). Multiple accessories are fixedly installed around each bubble input pipe (7). A long strip discharge pipe (8) is connected to the first-stage sedimentation tank (1). A microbubble generator (9) is provided on one side of the first-stage sedimentation tank (1). A bubble liquid delivery pipe (10) is fixedly installed at the liquid delivery end of the microbubble generator (9). One end of each of the multiple bubble input pipes (7) extends to the outside of the first-stage sedimentation tank (1) and is connected to the bubble liquid delivery pipe (10). A hollow support frame (11) is fixedly installed on the top of the first-stage sedimentation tank (1). Two traveling linear modules (12) are fixedly installed on the top of the hollow support frame (11). A common movable oil discharge mechanism is provided between the drive ends of the two traveling linear modules (12). The movable oil discharge mechanism is used to extract oil from the surface of the oily wastewater inside the first-stage sedimentation tank (1) by moving back and forth and negative pressure pumping.

2. The resource utilization device for petrochemical oily wastewater according to claim 1, characterized in that, The active oil discharge mechanism includes a C-shaped outer shell (13) fixedly installed between the drive ends of the two traveling linear modules (12). An oil conveying pipe (14) connected to the inside of the C-shaped outer shell (13) is fixedly installed on the top of the C-shaped outer shell (13). An oil delivery hose (41) is fixedly installed at the top of the oil conveying pipe (14). A pressure extraction pipe (15) is provided on one side of the primary sedimentation tank (1). The oil delivery hose (41) is connected to the pressure extraction pipe (15). A conversion wheel plate (16) is rotatably installed inside the C-shaped outer shell (13). Multiple filter ports are opened on the periphery of the conversion wheel plate (16). A filter screen (17) is fixedly installed inside each filter port. An outer shell plate (22) is fixedly installed on one side of the C-shaped outer shell (13). A central frame (18) is fixedly installed on one side of the outer shell plate (22). One end of the central frame (18) extends to the C-shaped outer shell. A vertically arranged transition tube (19) is fixedly installed inside the outer shell (13). The position of the transition tube (19) corresponds to the position of the oil conveying pipe (14). Both ends of the transition tube (19) are in contact with the inner wall of the conversion wheel plate (16). The bottom end of the oil conveying pipe (14) is in contact with the outer wall of the conversion wheel plate (16). A stabilizing disk (44) is fixedly sleeved on the center frame (18). A driven gear ring (20) is rotatably installed between the C-shaped outer shell (13) and the stabilizing disk (44). One side of the driven gear ring (20) extends into the interior of the C-shaped outer shell (13) and is fixedly connected to the conversion wheel plate (16). A conversion motor (23) is fixedly installed on one side of the outer disc (22). The output shaft of the conversion motor (23) extends into the interior of the outer disc (22) and is fixedly sleeved with a control gear (21) that meshes with the driven gear ring (20).

3. The resource utilization device for petrochemical oily wastewater according to claim 2, characterized in that, A centrifugal pump (42) is provided on one side of the primary sedimentation tank (1). A pressure pumping pipe (15) is fixedly installed at the output end of the centrifugal pump (42). One end of the oil delivery hose (41) is connected to the input end of the centrifugal pump (42).

4. The resource utilization device for petrochemical oily wastewater according to claim 2, characterized in that, Filter scrapers (24) are fixedly installed on the inner walls of both sides of the bottom of the C-shaped outer shell (13), and one end of each of the two filter scrapers (24) is in contact with the outer wall of the conversion wheel plate (16).

5. A resource utilization device for petrochemical oily wastewater according to claim 4, characterized in that, A connecting pipe (26) is fixedly installed on the side wall of the C-shaped outer shell (13). One end of the connecting pipe (26) extends into the interior of the C-shaped outer shell (13) and is fixedly installed with an absorption plate (25). The absorption plate (25) is inclined and located above one of the filter scrapers (24). A pressure slag feeding pipe (27) is provided on one side of the primary sedimentation tank (1). A support frame (28) is fixedly installed on the top of the side of the primary sedimentation tank (1) near the electric gate (4). A diversion slag feeding pipe (29) is fixedly installed on the top of the support frame (28). The tops of the connecting pipe (26) and the diversion slag feeding pipe (29) are both horizontally arranged and adapted to each other. The bottom end of the diversion slag feeding pipe (29) is connected to the pressure slag feeding pipe (27).

6. The resource utilization device for petrochemical oily wastewater according to claim 5, characterized in that, A secondary sedimentation tank (30) is fixedly installed at the bottom of the primary sedimentation tank (1). A vertically arranged hydraulic rod (31) is fixedly installed inside the secondary sedimentation tank (30). A lifting frame (32) is fixedly installed at the telescopic end of the hydraulic rod (31). A telescopic sleeve (33) is fixedly sleeved on the outside of the hydraulic rod (31). Multiple auxiliary telescopic rods (34) are fixedly installed inside the secondary sedimentation tank (30). The telescopic ends of the multiple auxiliary telescopic rods (34) are all fixedly installed at the bottom of the lifting frame (32). Multiple openings are provided at the bottom of the primary sedimentation tank (1) that are connected to the secondary sedimentation tank (30). The top of the lifting frame (32) is fixedly equipped with a plurality of sealing slide rods (35) that are compatible with the sinking opening. An inclined plate (36) is fixedly installed inside the secondary sedimentation tank (30). A plurality of evenly distributed sludge discharge holes (3001) are opened on the inner wall of the secondary sedimentation tank (30) near the bottom end of the inclined plate (36). A screw conveyor (43) is fixedly installed on one side of the secondary sedimentation tank (30). The plurality of sludge discharge holes (3001) are all connected to the interior of the screw conveyor (43). The conveying end of the screw conveyor (43) is connected to one end of the pressure sludge conveying pipe (27).

7. The resource utilization device for petrochemical oily wastewater according to claim 1, characterized in that, A power water pipe (37) is provided on one side of the primary sedimentation tank (1), and the other ends of the multiple bubble input pipes (7) extend to the outside of the primary sedimentation tank (1) and are connected to the power water pipe (37).

8. A resource utilization device for petrochemical oily wastewater according to claim 7, characterized in that, A diversion pipe (38) connected to the power water pipe (37) is fixedly installed on one side. A three-way water supply pipe (39) is fixedly installed on the top of the primary sedimentation tank (1). The three-way water supply pipe (39) is connected to the diversion pipe (38). Two push pipes (40) parallel to the traveling straight module (12) are fixedly installed on the inner wall of the top of the primary sedimentation tank (1). Both push pipes (40) are connected to the three-way water supply pipe (39).

Images