Nitrogen and phosphorus removal device for wastewater treatment

Abstract

The utility model discloses a nitrogen and phosphorus removal device for wastewater treatment, which relates to the technical field of wastewater treatment, solves the problem that the surface of a mesh screen cannot be quickly cleaned, and comprises a pretreatment box, a bioreactor and a strengthening box, the pretreatment box, the bioreactor and the strengthening box are sequentially connected through connecting pipes. When the stainless steel mesh screen cleaning device is used for cleaning a stainless steel mesh screen, a worker can start the second motor and the submersible pump, the second motor can control the lifting plate and the connecting rod to reciprocate up and down, and the connecting rod can drive the cleaning brush to reciprocate up and down to clean the stainless steel mesh screen; a submersible pump can spray water in a water tank onto the stainless steel mesh screen for cleaning under the cooperation of an elastic corrugated hose and a spray head, and the spray head can reciprocate up and down along with a cleaning brush under the cooperation of a sealing block, so that the stainless steel mesh screen can be better cleaned; the condition that impurities adhere to the surface of the stainless steel mesh screen and even block screen holes is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and in particular to a denitrification and phosphorus removal device for wastewater treatment. Background Technology

[0002] Domestic wastewater is generated in daily life. The wastewater contains nitrogen and phosphorus. The discharge of nitrogen and phosphorus can lead to eutrophication of water bodies, and nitrogen compounds can be toxic to humans and other organisms. Therefore, in the process of wastewater treatment, it is necessary to use denitrification and dephosphorization treatment devices to treat the wastewater and reduce the nitrogen and phosphorus content in the wastewater.

[0003] In the process of realizing this utility model, the inventors discovered that the technology has at least the following problems: when treating wastewater for denitrification and phosphorus removal, it is usually necessary to use a screen to pre-treat the wastewater in order to reduce the solid suspended matter in the wastewater. However, after use, it is not possible to quickly clean the surface of the screen, which causes impurities to adhere to the screen surface or even block the screen holes, which has a certain impact on subsequent use. Therefore, a denitrification and phosphorus removal device for wastewater treatment is now proposed. Utility Model Content

[0004] To address the problem of the inability to quickly clean the surface of the screen, this invention provides a denitrification and phosphorus removal device for wastewater treatment.

[0005] This utility model provides a denitrification and phosphorus removal device for wastewater treatment, which adopts the following technical solution:

[0006] A nitrogen and phosphorus removal device for wastewater treatment includes a pretreatment tank and a bioreactor and an enhancement tank disposed on one side of the pretreatment tank. The pretreatment tank, bioreactor, and enhancement tank are connected sequentially by connecting pipes. A stainless steel mesh screen is fixedly installed on the inner wall of the pretreatment tank. An equipment box is fixedly installed on the top of the pretreatment tank. A reciprocating screw is rotatably connected to the inner wall of the equipment box. A drive mechanism is connected to the reciprocating screw. A lifting plate is threadedly connected to the outer surface of the reciprocating screw. A sliding component is provided on one side of the lifting plate. A connecting rod is fixedly installed at the bottom of the lifting plate. A through groove is opened on the top of the pretreatment tank for the connecting rod to pass through. A cleaning brush is fixedly installed at the bottom of the connecting rod, and the cleaning brush is in contact with the stainless steel mesh screen.

[0007] A water tank is fixedly installed on the top of the pretreatment box, located on one side of the equipment box. A submersible pump is fixedly installed on the inner bottom wall of the water tank. A sealing block adapted to the through groove is fixedly installed on the outer surface of the connecting rod. A nozzle facing the stainless steel screen is fixedly installed at the bottom of the sealing block. An elastic corrugated hose is fixedly installed at the water outlet of the submersible pump. The end of the elastic corrugated hose away from the submersible pump is connected to the water inlet of the nozzle.

[0008] By adopting the above technical solution, when cleaning the stainless steel mesh screen, the operator can start the second motor and the submersible pump. The second motor can control the lifting plate and the connecting rod to move up and down reciprocally. The connecting rod can drive the cleaning brush to move up and down reciprocally to clean the stainless steel mesh screen. At the same time, the submersible pump can spray water from the water tank onto the stainless steel mesh screen for cleaning with the cooperation of the flexible corrugated hose and the nozzle. With the cooperation of the sealing block, the nozzle can move up and down reciprocally with the cleaning brush, which can better clean the stainless steel mesh screen and reduce the adhesion of impurities on the surface of the stainless steel mesh screen or even blockage of the screen holes.

[0009] Optionally, a first motor is fixedly installed on the top of the strengthening box, and a stirring rod is fixedly installed on the output end of the first motor through the strengthening box.

[0010] By adopting the above technical solution, when using the equipment, the staff can add an appropriate amount of coagulant and chelating agent to the enhanced tank to enhance the particle settling performance. The first motor can drive the stirring rod to rotate, so that the coagulant and chelating agent can be evenly mixed with the wastewater.

[0011] Optionally, the drive mechanism includes a second motor, which is fixedly connected to the equipment box. A first bevel gear is fixedly installed at the output end of the second motor. The first bevel gear meshes with a second bevel gear, and the second bevel gear is fixedly connected to a reciprocating lead screw.

[0012] By adopting the above technical solution, the second motor can drive the first bevel gear to rotate, the first bevel gear can drive the second bevel gear to rotate, and the second bevel gear can drive the reciprocating screw to rotate, which helps to improve the stability of the reciprocating screw rotation.

[0013] Optionally, the water tank is provided with an observation window inside, and the observation window is provided with scale lines on its outer side.

[0014] By adopting the above technical solution, staff can check the remaining water level inside the tank in real time through the observation window during use.

[0015] Optionally, a protective shell is fixedly installed on the top of the reinforced box, the first motor is disposed inside the protective shell, a heat dissipation groove is provided inside the protective shell, and a heat dissipation mesh is fixedly installed on the inner wall of the heat dissipation groove inside the protective shell.

[0016] By adopting the above technical solution, the protective shell can protect the first motor during use, reducing the chance of external objects touching the first motor.

[0017] Optionally, the sliding assembly includes a slider, one side of which is fixedly connected to the lifting plate, and the inside of the equipment box is provided with a groove that matches the slider.

[0018] By adopting the above technical solution, the slider and the slide can limit the movement range of the lifting plate, and at the same time make the lifting plate move more smoothly.

[0019] Optionally, a side door is rotatably connected to one side of the pretreatment box via a hinge.

[0020] By adopting the above technical solution, the side door allows staff to easily clean the impurity particles intercepted by the stainless steel mesh screen inside the pretreatment box.

[0021] Optionally, a multi-stage electric push rod is fixedly installed on one side of the strengthening box, and a scraper is fixedly installed on the telescopic end of the multi-stage electric push rod that extends into the interior of the strengthening box. A sealed door is provided on one side of the strengthening box.

[0022] By adopting the above technical solution, when it is necessary to clean the sediment at the bottom of the strengthening box, the staff can open the sealed door and start the multi-stage electric push rod. The multi-stage electric push rod can drive the scraper to move and push the sediment at the bottom of the strengthening box to the outside of the strengthening box, thereby completing the rapid cleaning of the sediment at the bottom of the strengthening box.

[0023] In summary, this utility model has the following beneficial effects:

[0024] 1. When cleaning a stainless steel mesh screen, the operator can start the second motor and the submersible pump. The second motor can control the lifting plate and the connecting rod to move up and down reciprocally. The connecting rod can drive the cleaning brush to move up and down reciprocally to clean the stainless steel mesh screen. At the same time, the submersible pump can spray water from the water tank onto the stainless steel mesh screen for cleaning with the cooperation of the elastic corrugated hose and the nozzle. With the cooperation of the sealing block, the nozzle can move up and down reciprocally with the cleaning brush, so as to better clean the stainless steel mesh screen and reduce the adhesion of impurities on the surface of the stainless steel mesh screen or even blockage of the screen holes.

[0025] 2. When it is necessary to clean the sediment at the bottom of the hardening chamber, the operator can open the sealed door and start the multi-stage electric push rod. The multi-stage electric push rod can drive the scraper to move and push the sediment at the bottom of the hardening chamber to the outside of the hardening chamber, thereby completing the rapid cleaning of the sediment at the bottom of the hardening chamber. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0027] Figure 2 This is a frontal cross-sectional structural diagram of the present invention.

[0028] Figure 3 This is a utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0029] Figure 4 This is a utility model Figure 1 Enlarged structural diagram at point B.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Pretreatment box; 2. Bioreactor; 3. Enhancement box; 4. Stainless steel mesh screen; 5. Equipment box; 6. Reciprocating screw; 7. Drive mechanism; 71. Second motor; 72. First bevel gear; 73. Second bevel gear; 8. Lifting plate; 9. Sliding assembly; 91. Slider; 92. Slide groove; 10. Connecting rod; 11. Cleaning brush; 12. Water tank; 13. Submersible pump; 14. Sealing block; 15. Nozzle; 16. Flexible corrugated hose; 17. First motor; 18. Stirring rod; 19. Observation window; 20. Protective shell; 21. Side door; 22. Multi-stage electric push rod; 23. Scraper; 24. Sealing door. Detailed Implementation

[0032] The following description, in conjunction with the embodiments of this utility model, includes appendices. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] Please refer to Figure 1-3 A wastewater treatment device for nitrogen and phosphorus removal includes a pretreatment tank 1, a bioreactor 2, and an enhancement tank 3 located on one side of the pretreatment tank 1. The pretreatment tank 1, bioreactor 2, and enhancement tank 3 are connected sequentially by connecting pipes. The bioreactor 2 has a multi-stage anaerobic-anoxic-aerobic zone, and a special carrier is added to promote the proliferation of beneficial bacteria, thereby improving the nitrogen and phosphorus removal rate. The special carrier in the bioreactor 2 is made of polyurethane foam and is in the form of microspheres with a particle size range of 5-8 mm. A stainless steel mesh screen 4 is fixedly installed on the inner wall of the pretreatment tank 1. A side door 21 is rotatably connected to one side of the pretreatment tank 1 via a hinge, allowing staff to easily clean the impurity particles intercepted by the stainless steel mesh screen 4 inside the pretreatment tank 1.

[0034] Reference Figure 1-3An equipment box 5 is fixedly installed on the top of the pretreatment box 1. A reciprocating screw 6 is rotatably connected to the inner wall of the equipment box 5. A drive mechanism 7 is connected to the reciprocating screw 6. The drive mechanism 7 includes a second motor 71, which is fixedly connected to the equipment box 5. A first bevel gear 72 is fixedly installed at the output end of the second motor 71. The first bevel gear 72 meshes with a second bevel gear 73, which is fixedly connected to the reciprocating screw 6. The second motor 71 can drive the first bevel gear 72 to rotate, the first bevel gear 72 can drive the second bevel gear 73 to rotate, and the second bevel gear 73 can drive the reciprocating screw 6 to rotate, thereby improving the stability of the rotation of the reciprocating screw 6. The outer surface of the reciprocating screw 6 is threaded with a lifting plate 8. A sliding component 9 is provided on one side of the lifting plate 8. The sliding component 9 includes a slider 91. One side of the slider 91 is fixedly connected to the lifting plate 8. The inside of the equipment box 5 is provided with a sliding groove 92 that matches the slider 91. The slider 91 and the sliding groove 92 can limit the movement range of the lifting plate 8 and make the lifting plate 8 move more smoothly.

[0035] Reference Figure 2-4 A connecting rod 10 is fixedly installed at the bottom of the lifting plate 8. A through groove is provided on the top of the pretreatment box 1 for the connecting rod 10 to pass through. A cleaning brush 11 is fixedly installed at the bottom of the connecting rod 10, and the cleaning brush 11 contacts the stainless steel mesh screen 4. A water tank 12 is fixedly installed on the top of the pretreatment box 1, located on one side of the equipment box 5. An observation window 19 is provided inside the water tank 12, and scale lines are provided on the outer side of the observation window 19. During use, the operator can check the remaining water level in the water tank 12 in real time through the observation window 19. A submersible pump 13 is fixedly installed on the inner bottom wall of the water tank 12. A sealing block 14 adapted to the through groove is fixedly installed on the outer surface of the connecting rod 10. A nozzle 15 facing the stainless steel mesh screen 4 is fixedly installed at the bottom of the sealing block 14. An elastic corrugated hose 16 is fixedly installed at the water outlet end of the submersible pump 13. The end of the elastic corrugated hose 16 away from the submersible pump 13 is connected to the water inlet end of the nozzle 15.

[0036] Reference Figure 1-3A first motor 17 is fixedly installed on the top of the intensification tank 3. A stirring rod 18 is fixedly installed on the output end of the first motor 17, which passes through the intensification tank 3. During use, the operator can add an appropriate amount of coagulant and chelating agent to the intensification tank 3 to enhance the particle settling performance. The first motor 17 can drive the stirring rod 18 to rotate, so that the coagulant and chelating agent can be evenly mixed with the wastewater. A protective shell 20 is fixedly installed on the top of the intensification tank 3. The first motor 17 is located inside the protective shell 20. The inside of the protective shell 20 has heat dissipation grooves, and a heat dissipation mesh is fixedly installed on the inner wall of the heat dissipation grooves. During use, the protective shell 20 can protect the first motor 17 and reduce the possibility of external objects touching the first motor 17. A multi-stage electric push rod 22 is fixedly installed on one side of the intensification tank 3. A scraper 23 is fixedly installed on the telescopic end of the multi-stage electric push rod 22, which passes through the inside of the intensification tank 3. A sealing door 24 is provided on one side of the intensification tank 3. When it is necessary to clean the sediment on the bottom wall of the strengthening box 3, the staff can open the sealing door 24 and start the multi-stage electric push rod 22. The multi-stage electric push rod 22 can drive the scraper 23 to move and push the sediment on the bottom wall of the strengthening box 3 to the outside of the strengthening box 3, thereby completing the quick cleaning of the sediment on the bottom wall of the strengthening box 3.

[0037] The implementation principle of this utility model is as follows: In use, wastewater can first enter the pretreatment tank 1. The stainless steel mesh screen 4 inside the pretreatment tank 1 can remove solid suspended matter and oily substances from the wastewater. After that, the filtered water can enter the bioreactor 2. The bioreactor 2 is made of polyurethane foam, which can promote the proliferation of beneficial bacteria and improve the denitrification and phosphorus removal rate. Finally, the treated water enters the enhancement tank 3. The operator can add an appropriate amount of coagulant and chelating agent to the enhancement tank 3 to enhance the particle settling performance. The first motor 17 can drive the stirring rod 18 to rotate, so that the coagulant and chelating agent can be evenly mixed with the wastewater, thereby completing the treatment of wastewater.

[0038] When the stainless steel mesh screen 4 needs to be cleaned after use, the operator can start the second motor 71 and the submersible pump 13. The second motor 71 can drive the first bevel gear 72 to rotate, the first bevel gear 72 can drive the second bevel gear 73 to rotate, and the second bevel gear 73 can drive the reciprocating screw 6 to rotate. The reciprocating screw 6 can drive the lifting plate 8 and the connecting rod 10 to move up and down reciprocally with the cooperation of the slider 91 and the slide groove 92. The connecting rod 10 can drive the cleaning brush 11 to move up and down reciprocally to clean the surface of the stainless steel mesh screen 4. At the same time, the submersible pump 13 can spray water from the water tank 12 onto the stainless steel mesh screen 4 for cleaning with the cooperation of the elastic corrugated hose 16 and the nozzle 15. With the cooperation of the sealing block 14, the nozzle 15 can move up and down reciprocally with the cleaning brush 11, so as to better clean the stainless steel mesh screen 4 and reduce the adhesion of impurities on the surface of the stainless steel mesh screen 4 or even blockage of the screen holes.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A nitrogen and phosphorus removal device for wastewater treatment, comprising a pretreatment tank (1) and a bioreactor (2) and an enhancement tank (3) disposed on one side of the pretreatment tank (1), characterized in that: The pretreatment box (1), bioreactor (2) and enhancement box (3) are connected in sequence by connecting pipes. A stainless steel mesh screen (4) is fixedly installed on the inner wall of the pretreatment box (1). An equipment box (5) is fixedly installed on the top of the pretreatment box (1). A reciprocating screw (6) is rotatably connected to the inner wall of the equipment box (5). A drive mechanism (7) is connected to the reciprocating screw (6). A lifting plate (8) is threadedly connected to the outer surface of the reciprocating screw (6). A sliding component (9) is provided on one side of the lifting plate (8). A connecting rod (10) is fixedly installed at the bottom of the lifting plate (8). A through groove is opened on the top of the pretreatment box (1) for the connecting rod (10) to pass through. A cleaning brush (11) is fixedly installed at the bottom of the connecting rod (10). The cleaning brush (11) contacts the stainless steel mesh screen (4). A water tank (12) is fixedly installed on the top of the pretreatment box (1) on one side of the equipment box (5). A submersible pump (13) is fixedly installed on the inner bottom wall of the water tank (12). A sealing block (14) adapted to the through groove is fixedly installed on the outer surface of the connecting rod (10). A nozzle (15) facing the stainless steel mesh screen (4) is fixedly installed at the bottom of the sealing block (14). An elastic corrugated hose (16) is fixedly installed at the water outlet end of the submersible pump (13). The end of the elastic corrugated hose (16) away from the submersible pump (13) is connected to the water inlet end of the nozzle (15).

2. The denitrification and phosphorus removal device for wastewater treatment according to claim 1, characterized in that: The top of the strengthening box (3) is fixedly installed with a first motor (17), and the output end of the first motor (17) through the strengthening box (3) is fixedly installed with a stirring rod (18).

3. The denitrification and phosphorus removal device for wastewater treatment according to claim 1, characterized in that: The drive mechanism (7) includes a second motor (71), which is fixedly connected to the equipment box (5). A first bevel gear (72) is fixedly installed at the output end of the second motor (71). The first bevel gear (72) is meshed with a second bevel gear (73), which is fixedly connected to the reciprocating lead screw (6).

4. The denitrification and phosphorus removal device for wastewater treatment according to claim 1, characterized in that: The water tank (12) is provided with an observation window (19) inside, and the outer side of the observation window (19) is provided with scale lines.

5. A denitrification and phosphorus removal device for wastewater treatment according to claim 2, characterized in that: The top of the reinforced box (3) is fixedly installed with a protective shell (20), the first motor (17) is located inside the protective shell (20), the inside of the protective shell (20) is provided with a heat dissipation groove, and the inner wall of the heat dissipation groove inside the protective shell (20) is fixedly installed with a heat dissipation mesh.

6. The denitrification and phosphorus removal device for wastewater treatment according to claim 1, characterized in that: The sliding assembly (9) includes a slider (91), one side of which is fixedly connected to the lifting plate (8), and the inside of the equipment box (5) is provided with a sliding groove (92) that is compatible with the slider (91).

7. The denitrification and phosphorus removal device for wastewater treatment according to claim 1, characterized in that: The pretreatment box (1) has a side door (21) that is rotatably connected to one side by a hinge.

8. A denitrification and phosphorus removal device for wastewater treatment according to claim 1, characterized in that: A multi-stage electric push rod (22) is fixedly installed on one side of the strengthening box (3). A scraper (23) is fixedly installed on the telescopic end of the multi-stage electric push rod (22) that extends into the interior of the strengthening box (3). A sealing door (24) is provided on one side of the strengthening box (3).

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