A device for advanced treatment of sewage by denitrification biofilter

Abstract

The present application belongs to sewage treatment technical field, disclose a kind of sewage advanced treatment denitrification biological filter device, comprising: biological filter body, biological filter body is provided with biological filter material;Water outlet of water pump is connected with water pipe, water pipe extends to biological filter body and is connected with multiple spray heads, and water pump top is provided with the filter assembly fixed in primary filter box;Reciprocating drive assembly is provided with scraper, scraper is in contact with filter assembly, and scraper is provided with suction component;A pair of conveying components is fixed to the side of collection box, the inlet of a pair of conveying components is close to the end of the top surface of filter assembly;Motor is drivingly connected with multiple conveying components and reciprocating drive assembly by transmission assembly, the present application can be cleaned when sewage is filtered, without stopping denitrification filtration operation, to improve the operation efficiency of denitrification filtration, and single power source is used, reduce operating cost, with good economic benefit.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, and in particular relates to a denitrification biological filter device for deep wastewater treatment. Background Technology

[0002] With the rapid development of society, the amount of domestic sewage is increasing. However, this type of sewage is characterized by its complex composition and extremely high concentrations of ammonia nitrogen and total nitrogen. The discharge of nutrients such as nitrogen from this type of wastewater into water bodies can lead to eutrophication, causing a large number of algae and microorganisms to proliferate and thus affecting the quality of water sources. Long-term consumption of water with high nitrogen content can cause dizziness, anemia, and various neurological disorders.

[0003] Denitrification, also known as nitrogen removal, is a biochemical process in which denitrifying bacteria reduce nitrogen in nitrates to nitrogen gas through a series of intermediate products. In the process of wastewater treatment, denitrification biological filter wastewater treatment equipment is usually used to remove nitrogen from wastewater.

[0004] Wastewater denitrification biological filter devices typically have a preliminary filtration module and a denitrification module. The preliminary filtration module removes impurities from the wastewater, thereby improving the subsequent denitrification effect. However, after a long period of preliminary impurity removal, a large amount of impurities will accumulate on the filter screen. When it is necessary to clean these impurities, the wastewater treatment must be stopped and manual cleaning is required, which is very inconvenient. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes a wastewater deep treatment denitrification biological filter device, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides a wastewater deep treatment denitrification biological filter device, comprising:

[0007] The biological filter body contains biological filter media.

[0008] A primary filter box, wherein a water pump is fixedly installed on the bottom surface of the primary filter box, the outlet of the water pump is connected to a water pipe, the water pipe extends into the body of the biological filter and is connected to multiple nozzles, and a filter assembly fixedly connected to the primary filter box is provided above the water pump.

[0009] A reciprocating drive assembly is disposed above the filter assembly, and a scraper is disposed on the reciprocating drive assembly. The scraper contacts the filter assembly, and a dirt suction component is disposed on the scraper.

[0010] A collection box is fixed to the top surface of the primary filter box. A pair of conveying components are fixed to one side of the collection box. The inlets of the pair of conveying components are close to one end of the top surface of the filter component, and the outlets of the conveying components are connected to the collection box.

[0011] The motor is fixedly installed on the top surface of the collection box, and the motor is connected to the multiple conveying components and the reciprocating drive components through a transmission assembly.

[0012] Optionally, the filtering assembly includes a first filter screen, a second filter screen fixedly connected to the bottom surface of one end of the first filter screen, the second filter screen being perpendicular to the first filter screen, a third filter screen fixedly connected to the end face of the second filter screen away from the first filter screen, the third filter screen being lower than the first filter screen, the two ends of the third filter screen being inclined downward and respectively fixedly connected to a fourth filter screen, the fourth filter screen having a collection groove, and a pair of conveying components corresponding to the two collection grooves respectively.

[0013] Optionally, the conveying assembly includes a auger conveyor, which is fixedly connected to the side wall of the collection box via a first connecting frame. The inlet of the auger conveyor extends into the collection trough, and the outlet of the auger conveyor is connected to the collection box via a connecting pipe.

[0014] Optionally, the transmission assembly includes a drive wheel, which is connected to two driven wheels via two first transmission belts. The two driven wheels are respectively fixed to the shafts of the two auger conveyors.

[0015] Optionally, the reciprocating drive assembly includes a lead screw, which is rotatably connected inside the primary filter box. The lead screw is driven by the drive wheel, and a lead screw nut is driven by the lead screw. Two smooth rods for passing through the lead screw nut are fixed inside the primary filter box, and the lead screw nut is connected to the scraper.

[0016] Optionally, the transmission assembly further includes a transmission rod, which is rotatably connected to the primary filter box via a second connecting frame. A second driven wheel is fixedly connected to one end of the transmission rod, and the second driven wheel is connected to the driving wheel via a second transmission belt. A first bevel gear is fixedly connected to the end of the transmission rod away from the second driven wheel, and the first bevel gear meshes with the second bevel gear. The second bevel gear is fixedly connected to one end of the lead screw.

[0017] Optionally, a gantry frame is fixedly connected to the lead screw nut, and the scraper is slidably connected to the gantry frame. The two inner sidewalls of the primary filter box, parallel to the lead screw, are respectively provided with sliding grooves. A lifting block is fixedly connected to one end of the sliding groove near the third filter screen. A first inclined surface is provided on the lifting block. Contact blocks are fixedly connected to both ends of the scraper, and a second inclined surface is provided on the contact blocks. The first inclined surface and the second inclined surface are corresponding and parallel. The scraper and the top wall of the gantry frame are detachably connected via a snap-fit ​​assembly. A pair of unlocking rods are fixedly connected to the inner wall of the primary filter box away from the third filter screen, and the pair of unlocking rods correspond to the snap-fit ​​assembly.

[0018] Optionally, limit grooves are provided on both sides of the gantry frame, and limit blocks are slidably fitted in the limit grooves, with the limit blocks being fixedly connected to the scraper.

[0019] Optionally, the latching assembly includes a latching block and a movable block. The latching block is fixed to the top surface of the scraper. The top surface of the latching block has a third inclined surface, and the side wall of the latching block has a slot. The movable block is slidably fitted on the top wall of the gantry frame through two guide plates and a return spring. One end of the movable block has a fourth inclined surface, which corresponds vertically to and is parallel to the third inclined surface. The end of the movable block with the fourth inclined surface is inserted into the slot. A pair of contact plates are fixed to the movable block, and the pair of contact plates corresponds one-to-one with the pair of unlocking rods.

[0020] Optionally, an inlet pipe is fixedly connected to and connected to the primary filter box, and the inlet pipe is located above the first filter screen.

[0021] Compared with the prior art, the present invention has the following advantages and technical effects:

[0022] After being filtered by the filtration components in the primary filter tank, the wastewater is pumped through water pipes and nozzles into the biological filter body, where it undergoes denitrification filtration via biological filter media. A motor drives a reciprocating drive assembly and a pair of conveying components via a transmission assembly. The reciprocating drive assembly moves scrapers to clean impurities from the filtration components, causing them to accumulate at one end of the conveying assembly, which then transports them to a collection tank. This process maintains the filtration performance of the filtration components, improving the primary filtration effect. Cleaning can be performed during wastewater filtration without stopping the denitrification process, thus increasing the efficiency of denitrification filtration. Furthermore, the use of a single power source reduces operating costs, resulting in significant economic benefits. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the primary filter box structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the slide, lifting block, and contact block structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the snap-fit ​​assembly structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the limiting groove and limiting block structure of the present invention.

[0029] In the diagram: 1. Biological filter body; 2. Biological filter media; 3. Primary filter box; 4. Water pump; 5. Water pipe; 6. Sprayer; 7. Scraper; 8. Collection box; 9. Motor; 10. First filter screen; 11. Second filter screen; 12. Third filter screen; 13. Fourth filter screen; 14. Collection tank; 15. Conveyor; 16. Connecting pipe; 17. Drive wheel; 18. First transmission belt; 19. First driven wheel; 20. Lead screw; 21. Lead screw nut; 22. Transmission rod; 3. Second driven wheel; 24. Second transmission belt; 25. First bevel gear; 26. Second bevel gear; 27. Gantry frame; 28. Slide groove; 29. ​​Lifting block; 30. First inclined surface; 31. Contact block; 32. Second inclined surface; 33. Unlocking rod; 34. Locking block; 35. Movable block; 36. Third inclined surface; 37. Slot; 38. Guide plate; 39. Return spring; 40. Fourth inclined surface; 41. Contact plate; 42. Limiting groove; 43. Limiting block; 44. Liquid inlet pipe. Detailed Implementation

[0030] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Reference Figures 1-5 As shown, this embodiment provides a wastewater deep treatment denitrification biological filter device, including:

[0033] Biological filter body 1, biological filter media 2 are installed inside biological filter body 1;

[0034] The primary filter box 3 has a water pump 4 fixedly installed on the bottom surface inside the primary filter box 3. The outlet of the water pump 4 is connected to a water pipe 5. The water pipe 5 extends into the biological filter body 1 and is connected to multiple nozzles 6. A filter assembly fixedly connected to the primary filter box 3 is installed above the water pump 4.

[0035] A reciprocating drive assembly is disposed above the filter assembly, and a scraper 7 is disposed on the reciprocating drive assembly. The scraper 7 contacts the filter assembly, and a dirt suction assembly is disposed on the scraper 7.

[0036] Collection box 8 is fixed to the top surface of primary filter box 3. A pair of conveying components are fixed to one side of collection box 8. The inlets of the pair of conveying components are close to one end of the top surface of the filter components, and the outlets of the conveying components are connected to collection box 8.

[0037] Motor 9 is fixedly installed on the top surface of collection box 8. Motor 9 is connected to multiple conveying components and reciprocating drive components through a transmission component.

[0038] After being filtered by the filter components in the primary filter box 3, the wastewater is pumped by the water pump 4 through the water pipe 5 and the nozzle 6 into the biological filter body 1, where it undergoes denitrification filtration by the biological filter media 2. The motor 9 drives the reciprocating drive component and a pair of conveying components through the transmission component. The reciprocating drive component drives the scraper 7 to clean the impurities on the filter components, causing the impurities to accumulate at one end of the conveying component, which then transports the impurities to the collection box 8. This ensures that the filter components maintain good filtration performance, improves the primary filtration effect of wastewater, and allows cleaning to be performed during wastewater filtration without stopping the denitrification filtration operation, thereby improving the efficiency of denitrification filtration. Furthermore, the use of a single power source reduces operating costs and has good economic benefits.

[0039] The scheme is further optimized. The filter assembly includes a first filter screen 10. A second filter screen 11 is fixed to the bottom surface of one end of the first filter screen 10. The second filter screen 11 is set perpendicular to the first filter screen 10. A third filter screen 12 is fixed to the end face of the second filter screen 11 away from the first filter screen 10. The third filter screen 12 is lower than the first filter screen 10. The two ends of the third filter screen 12 are set downward and fixed to a fourth filter screen 13 respectively. A collection groove 14 is opened on the fourth filter screen 13. A pair of conveying components correspond to the two collection grooves 14 respectively.

[0040] Large-area filtration is performed through the first filter screen 10, and the third filter screen 12 is connected to the first filter screen 10 through the second filter screen 11 at one end, forming a concentrated accumulation area for impurities. Furthermore, the two ends of the third filter screen 12 are inclined downwards, which facilitates the flow of impurities to the fourth filter screen 13, making it easier for the conveying components to transfer.

[0041] The scheme is further optimized. The conveying assembly includes a auger conveyor 15, which is fixedly connected to the side wall of the collection box 8 via a first connecting frame. The inlet of the auger conveyor 15 extends into the collection trough 14, and the outlet of the auger conveyor 15 is connected to the collection box 8 via a connecting pipe 16. The transmission assembly includes a drive wheel 17, which is driven by two first driven wheels 19 connected to two first driven belts 18. The two first driven wheels 19 are fixedly connected to the shafts of the two auger conveyors 15 respectively.

[0042] The motor 9 drives the drive wheel 17 to rotate, which in turn drives the first driven wheel 19 to rotate via the first transmission belt 18, thereby enabling the auger conveyor 15 to operate and transport impurities to the collection box 8 via the connecting pipe 16.

[0043] Further optimizing the design, the reciprocating drive assembly includes a lead screw 20, which is rotatably connected inside the primary filter box 3. The lead screw 20 is driven by the drive wheel 17, and a lead screw nut 21 is driven by the lead screw 20. Two smooth rods for passing through the lead screw nut 21 are fixed inside the primary filter box 3. The lead screw nut 21 is connected to the scraper 7. The transmission assembly also includes a transmission rod 22, which is rotatably connected to the primary filter box 3 via a second connecting frame. A second driven wheel 23 is fixedly connected to one end of the transmission rod 22. The second driven wheel 23 is driven by the drive wheel 17 via a second transmission belt 24. A first bevel gear 25 is fixedly connected to the end of the transmission rod 22 away from the second driven wheel 23. The first bevel gear 25 meshes with a second bevel gear 26, which is fixedly connected to one end of the lead screw 20.

[0044] The drive wheel 17 rotates, which drives the second driven wheel 23 to rotate via the second transmission belt 24. This causes the lead screw 20 to rotate via the transmission rod 22, the first bevel gear 25, and the second bevel gear 26. In turn, the lead screw nut 21 drives the scraper 7 to reciprocate.

[0045] Further optimization of the scheme: a gantry frame 27 is fixedly connected to the lead screw nut 21; the scraper 7 is slidably connected to the gantry frame 27; the two inner sidewalls of the primary filter box 3, parallel to the lead screw 20, are respectively provided with sliding grooves 28; a lifting block 29 is fixedly connected to the end of the sliding groove 28 near the third filter screen 12; a first inclined surface 30 is provided on the lifting block 29; contact blocks 31 are fixedly connected to both ends of the scraper 7; a second inclined surface 32 is provided on the contact block 31; the first inclined surface 30 and the second inclined surface 32 are corresponding and parallel; and the scraper 7 is detachably connected to the top wall of the gantry frame 27 through a snap-fit ​​assembly; and a pair of unlocking rods 33 are fixedly connected to the inner wall of the primary filter box 3 away from the third filter screen 12, the pair of unlocking rods 33 corresponding to the snap-fit ​​assembly; gantry frame 27 Limiting grooves 42 are provided on both sides of the wall. Limiting blocks 43 slide in the limiting grooves 42 and are fixedly connected to the scraper 7. The locking assembly includes a locking block 34 and a movable block 35. The locking block 34 is fixedly connected to the top surface of the scraper 7. The top surface of the locking block 34 has a third inclined surface 36 and the side wall of the locking block 34 has a slot 37. The movable block 35 slides on the top wall of the gantry frame 27 through two guide plates 38 and a return spring 39. One end of the movable block 35 has a fourth inclined surface 40. The fourth inclined surface 40 corresponds vertically to and is parallel to the third inclined surface 36. The end of the movable block 35 with the fourth inclined surface 40 is inserted into the slot 37. A pair of contact plates 41 are fixedly connected to the movable block 35. The pair of contact plates 41 correspond one-to-one with a pair of unlocking rods 33.

[0046] When the screw nut 21 drives the gantry 27 and scraper 7 to move synchronously, after the contact blocks 31 at both ends of the scraper 7 contact the lifting block 29, the scraper 7 can slide along the limiting groove 42 through the cooperation of the first inclined surface 30 and the second inclined surface 32. Then, the third inclined surface 36 on the top of the scraper 7 contacts the fourth inclined surface 40 at one end of the movable block 35, pushing the movable block 35 to move backward. When the movable block 35 corresponds to the slot 37, the movable block 35 can be inserted into the slot 37 by the return spring 39, thereby limiting and raising the scraper 7, so that a gap is generated between the scraper 7 and the first filter screen 10, thereby preventing the scraper 7 from pushing impurities away from the filter assembly when it returns to its original position. When the scraper 7 and the gantry 27 move to the position of the unlocking rod 33, the contact plate 41 is pushed by the unlocking rod 33 to move the movable block 35, so that the scraper 7 can fall automatically by gravity.

[0047] Both the limiting groove 42 and the limiting block 43 are convex structures.

[0048] The scheme is further optimized by fixing and connecting an inlet pipe 44 to the primary filter box 3, with the inlet pipe 44 located above the first filter screen 10.

[0049] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0050] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for advanced treatment of sewage by denitrification biofilter, characterized in that, Include: Biological filter body (1), biological filter material (2) is arranged in biological filter body (1); The water pump (4) is fixedly installed on the bottom surface in the primary filter box (3), the water outlet of the water pump (4) is communicated with the water pipe (5), the water pipe (5) extends into the biological filter body (1) and is communicated with a plurality of spray heads (6), and a filter assembly is arranged above the water pump (4) and is fixed in the primary filter box (3); The reciprocating drive assembly is arranged above the filter assembly, and the scraper (7) is arranged on the reciprocating drive assembly, the scraper (7) is in contact with the filter assembly, and the scraper (7) is provided with a dust absorption assembly; The collecting box (8) is fixedly connected to the top surface of the primary filter box (3), one side of the collecting box (8) is fixedly connected to a pair of conveying assemblies, the inlet of the pair of conveying assemblies is close to one end of the top surface of the filter assembly, and the outlet of the conveying assembly is communicated with the collecting box (8); The motor (9) is fixedly installed on the top surface of the collecting box (8), and the motor (9) is drivingly connected with a plurality of conveying assemblies and the reciprocating drive assembly through a transmission assembly; The filter assembly includes a first filter screen (10), one end of the first filter screen (10) is fixedly connected with a second filter screen (11), the second filter screen (11) is arranged vertically with the first filter screen (10), the end surface of the second filter screen (11) away from the first filter screen (10) is fixedly connected with a third filter screen (12), the third filter screen (12) is lower than the first filter screen (10), the two ends of the third filter screen (12) are arranged downwardly inclined and respectively fixedly connected with a fourth filter screen (13), the fourth filter screen (13) is provided with a collecting groove (14), and a pair of conveying assemblies correspond to two collecting grooves (14) respectively; The conveying assembly includes a Longyou conveyor (15), the Longyou conveyor (15) is fixedly connected with the side wall of the collecting box (8) through a first connecting frame, the inlet of the Longyou conveyor (15) extends into the collecting groove (14), and the outlet of the Longyou conveyor (15) is communicated with the collecting box (8) through a communication pipe (16); The transmission assembly includes a driving wheel (17), two first driven wheels (19) are drivingly connected with the driving wheel (17) through two first transmission belts (18), and the shaft rods of the two Longyou conveyors (15) are respectively fixedly connected with the two first driven wheels (19); The reciprocating drive assembly includes a lead screw (20), the lead screw (20) is rotatably connected in the primary filter box (3), the lead screw (20) is drivingly connected with the driving wheel (17), a lead screw nut (21) is drivingly connected on the lead screw (20), two light rods for penetrating through the lead screw nut (21) are fixedly connected in the primary filter box (3), and the lead screw nut (21) is connected with the scraper (7). The screw nut (21) is fixedly connected with a gantry (27), the scraper (7) is in sliding connection with the gantry (27), the primary filter box (3) is provided with a sliding groove (28) on each of the two inner side walls parallel to the screw rod (20), the sliding groove (28) is fixedly connected with a lifting block (29) at one end close to the third filter screen (12), the lifting block (29) is provided with a first inclined surface (30), the scraper (7) is fixedly connected with a contact block (31) at each end, the contact block (31) is provided with a second inclined surface (32), the first inclined surface (30) and the second inclined surface (32) are in position correspondence and parallel, the scraper (7) and the top wall of the gantry (27) are detachably connected through a clamping assembly, and a pair of unlocking rods (33) are fixedly connected to the inner wall of one end of the primary filter box (3) away from the third filter screen (12), and the pair of unlocking rods (33) correspond to the clamping assembly.

2. The denitrification biofilter device for advanced treatment of sewage water according to claim 1, characterized in that: The transmission assembly further comprises a transmission rod (22), the transmission rod (22) is rotatably connected to the primary filter box (3) through a second connecting frame, one end of the transmission rod (22) is fixedly connected with a second driven wheel (23), the second driven wheel (23) and the driving wheel (17) are drivingly connected through a second transmission belt (24), one end of the transmission rod (22) away from the second driven wheel (23) is fixedly connected with a first bevel gear (25), the first bevel gear (25) is meshingly connected with a second bevel gear (26), and one end of the second bevel gear (26) is fixedly connected with the screw rod (20).

3. The device for advanced treatment of sewage by denitrification biofilter according to claim 1, characterized in that: The gantry (27) is provided with a limiting groove (42) in each of the two side walls, and a limiting block (43) is slidably fitted in the limiting groove (42).

4. The apparatus for advanced wastewater treatment by means of a denitrification biofilter according to claim 1, characterized in that: The clamping assembly comprises a clamping block (34) and a movable block (35), the clamping block (34) is fixedly connected to the top surface of the scraper (7), the top surface of the clamping block (34) is provided with a third inclined surface (36), the side wall of the clamping block (34) is provided with a slot (37), the movable block (35) is slidably fitted on the top wall of the gantry (27) through two guide plates (38) and a return spring (39), one end of the movable block (35) is provided with a fourth inclined surface (40), the fourth inclined surface (40) is in upward and downward correspondence with and parallel to the third inclined surface (36), one end of the movable block (35) with the fourth inclined surface (40) is inserted into the slot (37), and a pair of contact plates (41) are fixedly connected to the movable block (35), and the pair of contact plates (41) correspond to the pair of unlocking rods (33) one by one.

5. The apparatus for advanced wastewater treatment by means of a denitrification biofilter according to claim 1, characterized in that: A liquid inlet pipe (44) is fixedly connected to and communicates with the primary filter box (3), and the liquid inlet pipe (44) is located above the first filter screen (10).

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