System and process for treating oily wastewater

Abstract

The application discloses an oil-containing wastewater treatment system and process, which comprises a driving module, an oil absorption module, a filtering module, a decontamination module, a first pollution discharge module and a second pollution discharge module; the driving module is used for driving the oil absorption module to rotate on the surface containing wastewater; the oil absorption module can float on the surface containing wastewater, and can absorb the oil stains floating on the surface of the wastewater when the oil absorption module operates; when the device is implemented, the oil liquid on the surface of the wastewater can be completely adsorbed by using the oil absorption module; the use of the filtering module can avoid the blockage of the oil absorption module caused by the impurities on the surface of the wastewater, thereby ensuring the oil-water separation effect; the use of the decontamination module can remove the impurities on the surface of the filtering module, thereby ensuring the use effect of the filtering module; and the cooperation of the first pollution discharge module and the second pollution discharge module can collect the impurities, so that the user can process the impurities.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically an oily wastewater treatment system and process. Background Technology

[0002] Oily wastewater is a common type of wastewater, and the key step in its treatment is to effectively separate the oil from the water. Insoluble oil, because its density is less than water, will naturally float on the surface, forming an oil layer.

[0003] Currently, various technologies have been developed for oil-liquid separation, with suction being one of the most widely used methods—it separates oil and water by sucking up the oil layer floating on the water surface. However, existing suction technologies have significant drawbacks in practical applications: some schemes suffer from incomplete oil-water separation due to insufficient suction precision, leaving residual oil that affects the treatment effect; other schemes, due to poor selectivity of the suction device, extract a large amount of water along with the oil, resulting in water waste and increased subsequent treatment costs. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides an oily wastewater treatment system and process, which effectively solves the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an oily wastewater treatment system, comprising a drive module, an oil suction module, a filter module, a decontamination module, a first discharge module, and a second discharge module;

[0006] The drive module is used to drive the oil suction module to rotate on the surface containing wastewater.

[0007] The oil-absorbing module can float on the surface of wastewater, and when it is in operation, it can absorb the oil floating on the surface of the wastewater.

[0008] The filter module is positioned in front of the oil suction module in the direction of its operation. When the oil suction module rotates, the filter module can intercept impurities floating on the surface of the wastewater.

[0009] The filter module is capable of rotation, and when it rotates to a predetermined position, the decontamination module removes impurities from its surface, causing them to fall onto the surface of the first discharge module.

[0010] The first sewage discharge module is rotatable, enabling it to transport impurities from its surface to a predetermined location.

[0011] The second sewage discharge module is located below one end of the first sewage discharge module, allowing impurities on the surface of the first sewage discharge module to fall into the second sewage discharge module.

[0012] Preferably, the system also includes a system housing and a closed housing. Both the system housing and the closed housing are annular structures with an opening at the top, and the closed housing and the system housing are coaxially arranged. The drive module includes a motor located inside the closed housing. A rotating shaft is fixedly connected to the output end of the motor, and a mounting base is fixedly connected to the upper end of the rotating shaft so that the mounting base can rotate when the motor rotates.

[0013] Preferably, the oil absorption module includes a float, an oil absorption head, and an oil absorption pipe. The density of the float is less than the density of the wastewater. The oil absorption pipe is disposed inside the float. The oil absorption head is connected to the oil absorption pipe, and there are multiple oil absorption heads. A receiving cavity is also provided inside the closed shell. One end of the oil absorption pipe extends out of the float and into the receiving cavity. The float is provided with multiple grooves, and each oil absorption head is located in one groove.

[0014] Preferably, the upper end of the float is fixedly connected to a connecting column, and a slot is provided at the lower end of the mounting base. The upper end of the connecting column is inserted into the slot. The receiving cavity has an annular structure, the bottom surface of the receiving cavity is inclined, and an oil drain pipe is also provided on the receiving cavity.

[0015] Preferably, the filtering module includes a filter screen, which is a conveyor belt structure, and a first conveyor shaft is provided on the filter screen. The filter screen can rotate under the drive of the first conveyor shaft. An installation groove is provided in the mounting base. One end of the filter screen is located in the installation groove, and the other end of the filter screen is arranged inclined downward and extends to one side below the float. A first drive gear is fixedly connected to one end of the first conveyor shaft.

[0016] Preferably, the decontamination module includes an actuating component and a scraper. The actuating component includes a rotating shaft and a paddle. The paddle is fixedly connected to the surface of the rotating shaft. A second drive gear is fixedly connected to one end of the rotating shaft. The side of the rotating shaft contacts the surface of the filter screen. When the rotating shaft rotates, the paddle can tap the surface of the filter screen to shake off impurities. The paddle is made of an elastic material. The scraper is located on one side of the actuating component and at the lower end of the filter screen. A limiting plate is provided on the other side of the filter screen.

[0017] Preferably, the first sewage discharge module includes a conveying component located below the decontamination module, allowing impurities falling from the filter screen to land on the conveying component. The conveying component is arranged at an angle and has a second conveying shaft. A driven gear is fixedly connected to the second conveying shaft at the higher end of the conveying component. A third driving gear meshes with one side of the driven gear, and the side of the third driving gear away from the second conveying shaft extends outside the mounting base. The second sewage discharge module includes a sludge collection box with a mounting groove on the rotating shaft. The sludge collection box is located in the mounting groove and is located below the lower end of the conveying component.

[0018] Preferably, a rack assembly is fixed to the inner wall of the system housing, the rack assembly includes multiple rack units, and the first drive gear, the second drive gear and the third drive gear can respectively cooperate with different rack units.

[0019] To achieve the above objectives, the present invention provides the following technical solution: an oily wastewater treatment process, comprising the following steps:

[0020] The first step is to inject oily wastewater into the system casing. Once the amount of oily wastewater reaches the predetermined level, the injection of wastewater is stopped.

[0021] The second step is to turn on the motor and water pump. The motor drives the mounting base to rotate, and the water pump drives the oil suction head to suck up the oil. The oil suction head rotates inside the system housing and adsorbs the oil on the surface of the wastewater.

[0022] Thirdly, during the rotation of the mounting base, the filter screen rotates on its own and filters insoluble impurities floating on the surface of the wastewater. The impurities adsorbed on the filter screen fall onto the conveyor, and as the conveyor rotates, the impurities fall into the collection box.

[0023] The fourth step is for staff to clean the sludge collection box regularly.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] In the implementation of this device, the oil absorption module can thoroughly adsorb the oil on the surface of the wastewater, while the filtration module can prevent impurities on the wastewater surface from clogging the oil absorption module, thus ensuring the oil-water separation effect. The decontamination module can remove impurities from the surface of the filtration module, ensuring the effectiveness of the filtration module. The combined use of the first and second sewage discharge modules can collect the impurities for the user to process. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a schematic diagram of the internal structure of the entire invention;

[0028] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the central part of the structure;

[0029] Figure 3 This is a schematic diagram of one side of the internal structure of the mounting base of the present invention;

[0030] Figure 4For the present invention Figure 2 Enlarged structural diagram at point A;

[0031] Figure 5 This is a top view of the structure of the present invention.

[0032] In the diagram: 1. System housing; 2. Enclosed housing; 3. Rotating shaft; 4. Motor; 5. Receiving cavity; 6. Oil drain pipe; 7. Mounting base; 8. Float; 9. Oil suction head; 10. Rack and pinion assembly; 11. Oil suction pipe; 12. Filter screen; 13. Sludge collection box; 14. Actuating component; 15. Scraper; 16. Connecting column; 17. Slot; 18. First drive gear; 19. Second drive gear; 20. Third drive gear; 21. Driven gear; 22. Conveying component. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Depend on Figure 1-5 The present invention discloses an oily wastewater treatment system, comprising a drive module, an oil suction module, a filter module, a decontamination module, a first discharge module, and a second discharge module;

[0035] The drive module is used to drive the oil suction module to rotate on the surface containing wastewater.

[0036] The oil-absorbing module can float on the surface of wastewater, and when it is in operation, it can absorb the oil floating on the surface of the wastewater.

[0037] The filter module is positioned in front of the oil suction module in the direction of its operation. When the oil suction module rotates, the filter module can intercept impurities floating on the surface of the wastewater.

[0038] The filter module is capable of rotation, and when it rotates to a predetermined position, the decontamination module removes impurities from its surface, causing them to fall onto the surface of the first discharge module.

[0039] The first sewage discharge module is rotatable, enabling it to transport impurities from its surface to a predetermined location.

[0040] The second sewage discharge module is located below one end of the first sewage discharge module, allowing impurities on the surface of the first sewage discharge module to fall into the second sewage discharge module.

[0041] In the implementation of this device, the oil absorption module can thoroughly adsorb the oil on the surface of the wastewater, while the filtration module can prevent impurities on the wastewater surface from clogging the oil absorption module, thus ensuring the oil-water separation effect. The decontamination module can remove impurities from the surface of the filtration module, ensuring the effectiveness of the filtration module. The combined use of the first and second sewage discharge modules can collect the impurities for the user to process.

[0042] It also includes a system housing 1 and a closed housing 2. Both the system housing 1 and the closed housing 2 are annular structures with an opening at the top, and the closed housing 2 is coaxially arranged with the system housing 1. The drive module includes a motor 4, which is located inside the closed housing 2. A rotating shaft 3 is fixedly connected to the output end of the motor 4, and a mounting base 7 is fixedly connected to the upper end of the rotating shaft 3 so that the mounting base 7 can rotate with the motor 4.

[0043] The oil suction module includes a float 8, an oil suction head 9, and an oil suction pipe 11. The density of the float 8 is less than that of the wastewater. The oil suction pipe 11 is located inside the float 8. The oil suction head 9 is connected to the oil suction pipe 11, and there are multiple oil suction heads 9. A receiving cavity 5 is also provided inside the closed shell 2. One end of the oil suction pipe 11 extends out of the float 8 and into the receiving cavity 5. The float 8 is provided with multiple grooves, and each oil suction head 9 is located in one groove. The height of the oil suction head 9 is slightly higher than the lower surface of the float 8 to ensure that the oil suction head 9 can contact the oil surface. The grooves also allow the oil surface to be located on the side of the oil suction head 9, thereby ensuring the smooth operation of the oil suction.

[0044] The float 8 provides sufficient buoyancy for the oil suction pipe 11 and the oil suction head 9, enabling them to float on the surface of the wastewater and thus suck up the oil.

[0045] The oil suction head 9 has a nozzle structure, meaning it has multiple small suction holes on its suction end. This design ensures that the oil suction head 9 can perform oil suction even under relatively low suction pressure, making the suction process smoother, and also prevents excessive water pump power from sucking up large amounts of wastewater.

[0046] The upper end of the float 8 is fixedly connected to a connecting column 16, and a slot 17 is provided at the lower end of the mounting base 7. The upper end of the connecting column 16 is inserted into the slot 17 to ensure that the float 8 can move up and down a certain distance so that it can adapt to the water level of the wastewater. The receiving cavity 5 has an annular structure, the bottom surface of the receiving cavity 5 is inclined, and an oil drain pipe 6 is also provided on the receiving cavity 5.

[0047] The filtering module includes a filter screen 12, which is a conveyor belt structure. A first conveyor shaft is provided on the filter screen 12. The filter screen 12 can rotate under the drive of the first conveyor shaft. An installation groove is provided in the mounting base 7. One end of the filter screen 12 is located in the installation groove, and the other end of the filter screen 12 is arranged inclined downward and extends to one side below the float 8. A first drive gear 18 is fixedly connected to one end of the first conveyor shaft.

[0048] The decontamination module includes an actuating component 14 and a scraper 15. The actuating component 14 includes a rotating shaft and a paddle. The paddle is fixed to the surface of the rotating shaft. A second drive gear 19 is fixed to one end of the rotating shaft. The side of the rotating shaft contacts the surface of the filter screen 12. When the rotating shaft rotates, the paddle can tap the surface of the filter screen 12 to shake off the impurities on the surface of the filter screen 12. The paddle is made of an elastic material to ensure that the paddle can smoothly pass over the filter screen 12 after contacting it. The scraper 15 is set on one side of the actuating component 14. The scraper 15 is located at the lower end of the filter screen 12, and a limiting plate is set on the other side of the filter screen 12 so that the surface of the scraper 15 is in close contact with the surface of the filter screen 12.

[0049] The first sewage discharge module includes a conveyor 22, which is located below the decontamination module. Impurities falling from the filter screen 12 can fall onto the conveyor 22. The conveyor 22 is arranged at an angle and has a second conveying shaft. A driven gear 21 is fixedly connected to the second conveying shaft at the higher end of the conveyor 22. A third drive gear 20 meshes with one side of the driven gear 21, and the side of the third drive gear 20 away from the second conveying shaft extends out of the mounting base 7. The second sewage discharge module includes a sewage collection box 13. An installation groove is provided on the rotating shaft 3. The sewage collection box 13 is located in the installation groove and is located below the lower end of the conveyor 22.

[0050] A rack assembly 10 is fixed to the inner wall of the system housing 1. The rack assembly 10 includes multiple rack units. The first drive gear 18, the second drive gear 19, and the third drive gear 20 can respectively cooperate with different rack units.

[0051] When the mounting base 7 is rotated to the position of the rack and pinion assembly 10, the first drive gear 18, the second drive gear 19 and the third drive gear 20 can rotate, thereby moving the side of the filter screen 12 that is not in contact with the wastewater to the position in contact with the wastewater. The conveying member 22 rotates to move the impurities on its surface, and the agitator 14 can tap the filter screen 12 to shake off the impurities on the filter screen 12. The use of the scraper 15 can further scrape off the impurities on the surface of the filter screen 12.

[0052] An oily wastewater treatment process includes the following steps:

[0053] The first step is to inject oily wastewater into the system casing 1. Once the amount of oily wastewater reaches the predetermined level, the injection of wastewater is stopped.

[0054] The second step is to turn on the motor and water pump. The motor drives the mounting base 7 to rotate, and the water pump drives the oil suction head 9 to suck up the oil. The oil suction head 9 rotates inside the system housing 1 and adsorbs the oil on the surface of the wastewater.

[0055] Thirdly, during the rotation of the mounting base 7, the filter screen 12 can rotate on its own and filter insoluble impurities floating on the surface of the wastewater. The impurities adsorbed on the surface of the filter screen 12 can fall onto the conveying component 22. As the conveying component 22 rotates, the impurities fall into the sludge collection box 13.

[0056] The fourth step is for staff to clean the sludge collection box 13 regularly.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oily wastewater treatment system, characterized in that: It includes a drive module, an oil suction module, a filter module, a decontamination module, a first sewage discharge module, and a second sewage discharge module; The drive module is used to drive the oil suction module to rotate on the surface containing wastewater. The oil-absorbing module can float on the surface of wastewater, and when it is in operation, it can absorb the oil floating on the surface of the wastewater. The filter module is positioned in front of the oil suction module in the direction of its operation. When the oil suction module rotates, the filter module can intercept impurities floating on the surface of the wastewater. The filter module is capable of rotation, and when it rotates to a predetermined position, the decontamination module removes impurities from its surface, causing them to fall onto the surface of the first drainage module. The first sewage discharge module is rotatable, enabling it to transport impurities from its surface to a predetermined location. The second sewage discharge module is located below one end of the first sewage discharge module, allowing impurities on the surface of the first sewage discharge module to fall into the second sewage discharge module; It also includes a system housing (1) and a closed housing (2). Both the system housing (1) and the closed housing (2) are annular structures with an opening at the top. The closed housing (2) and the system housing (1) are coaxially arranged. The drive module includes a motor (4). The motor (4) is located inside the closed housing (2). A rotating shaft (3) is fixedly connected to the output end of the motor (4). A mounting base (7) is fixedly connected to the upper end of the rotating shaft (3) so that the mounting base (7) can rotate when the motor (4) rotates. The oil absorption module includes a float (8), an oil absorption head (9), and an oil absorption pipe (11). The density of the float (8) is less than that of the wastewater. The oil absorption pipe (11) is located inside the float (8). The oil absorption head (9) is connected to the oil absorption pipe (11), and there are multiple oil absorption heads (9). A receiving cavity (5) is also provided inside the closed shell (2). One end of the oil absorption pipe (11) extends out of the float (8) and into the receiving cavity (5). Multiple grooves are provided on the float (8), and each oil absorption head (9) is located in one groove. The upper end of the float (8) is fixed with a connecting column (16), and a slot (17) is provided at the lower end of the mounting base (7). The upper end of the connecting column (16) is inserted into the slot (17). The receiving cavity (5) has an annular structure, the bottom surface of the receiving cavity (5) is inclined, and an oil drain pipe (6) is also provided on the receiving cavity (5). The filter module includes a filter screen (12), which is a conveyor belt structure. A first conveyor shaft is provided on the filter screen (12). The filter screen (12) can rotate under the drive of the first conveyor shaft. An installation groove is provided in the mounting base (7). One end of the filter screen (12) is located in the installation groove, and the other end of the filter screen (12) is arranged inclined downward and extends to one side below the float (8). A first drive gear (18) is fixedly connected to one end of the first conveyor shaft.

2. The oily wastewater treatment system according to claim 1, characterized in that: The decontamination module includes an actuating component (14) and a scraper (15). The actuating component (14) includes a rotating shaft and a paddle. The paddle is fixed to the surface of the rotating shaft. A second drive gear (19) is fixed to one end of the rotating shaft. The side of the rotating shaft contacts the surface of the filter screen (12). When the rotating shaft rotates, the paddle can hit the surface of the filter screen (12) to shake off the impurities on the surface of the filter screen (12). The paddle is made of elastic material. The scraper (15) is set on one side of the actuating component (14). The scraper (15) is located at the lower end of the filter screen (12), and a limiting plate is set on the other side of the filter screen (12).

3. The oily wastewater treatment system according to claim 2, characterized in that: The first sewage discharge module includes a conveyor (22), which is located below the decontamination module. Impurities falling from the filter screen (12) can fall onto the conveyor (22), and the conveyor (22) is arranged at an angle. The conveyor (22) has a second conveying shaft. A driven gear (21) is fixedly connected to the second conveying shaft at the higher end of the conveyor (22). A third driving gear (20) meshes with one side of the driven gear (21), and the side of the third driving gear (20) away from the second conveying shaft extends out of the mounting base (7). The second sewage discharge module includes a sewage collection box (13), which has an installation groove on the rotating shaft (3). The sewage collection box (13) is located in the installation groove and is located below the lower end of the conveyor (22).

4. The oily wastewater treatment system according to claim 3, characterized in that: A rack assembly (10) is fixed to the inner wall of the system housing (1). The rack assembly (10) includes multiple rack units. The first drive gear (18), the second drive gear (19), and the third drive gear (20) can respectively cooperate with different rack units.

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