Wastewater treatment device and method for wood production

Abstract

The present invention relates to the technical field of wastewater treatment, and in particular to a wastewater treatment device and method for wood production. The wastewater treatment device comprises a filter tank comprising a first tank and a second tank, wherein the first tank is configured to intercept and treat large pieces of wood, and the second tank is configured to filter out floating wood chips and impurities; a first water intake pipe is provided at an end of the first tank, and side plates are respectively fixed on two inner side wall of the first tank; an intercepting frame is fixed between the two side plates; an electric slide rail is embedded in the inner side of each of the side plates, a slider is slidably connected in the electric slide rail, and a shaft rod is rotatably connected in the slider; and a bucket is fixed between the two shaft rods, and a collecting box is fixed at the top of the side of the intercepting frame away from the bucket. In the present invention, large pieces of wood in wastewater are intercepted by the intercepting frame, the electric slide rails drive the sliders and the bucket to move upwards, the bucket lifts the large pieces of wood intercepted on the intercepting frame, and the bucket is then driven by a turning assembly to rotate, thus dumping the large pieces of wood into the collecting box, and thereby achieving non-stop cleaning.

Description

Device and method for treating wastewater from wood production Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to a wastewater treatment device and method for wood production. Background Art

[0002] With the increasing demand for timber, the wood processing industry has also experienced rapid growth. This has made wood processing wastewater a major source of industrial wastewater pollution. Wood processing wastewater generally contains large amounts of toxic substances, organic matter, and other waste materials, and must be treated before discharge. Otherwise, it will cause serious pollution to river water quality, soil, and other ecological environments.

[0003] The wastewater generated during the wood production and processing process contains not only large pieces of wood, but also fine wood chips and other impurities. Before purification, the wastewater needs to be filtered to remove large pieces of wood, wood chips and impurities. Existing treatment devices generally use filter mesh filtration, but after filtration, the equipment needs to be stopped regularly to clean the filter mesh, otherwise the filter mesh will be blocked. This process is relatively inconvenient, so improvements are made to address this problem. Summary of the Invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes a device and method for treating wastewater used in wood production.

[0005] The present invention proposes a wastewater treatment device for wood production, including a filter tank, which includes a tank one and a tank two. Tank one is used to intercept and process large pieces of wood, and tank two is used to filter out suspended wood chips and impurities. A water inlet pipe one is provided at one end of tank one, and side panels are fixed to the inner walls on both sides of tank one. The same interception frame is fixed between the two side panels, and an electric slide rail is embedded in the inner side of the side panel. A slider is slidably connected in the electric slide rail, and an axle rod is rotatably connected in the slider. The same bucket is fixed between the two axles, and a collection box is fixed on the top of the interception frame away from the bucket. The electric slide rail drives the slider and the bucket to move upward, and the bucket drives the large pieces of wood intercepted on the interception frame upward, and then drives the bucket to rotate through the flip assembly to pour the large pieces of wood into the collection box.

[0006] Preferably, the flip assembly includes a pair of U-shaped frames respectively fixed on both sides of pool one, an electric push rod one is fixed on the U-shaped frame, the output shaft of the electric push rod one is connected to the first motor, the output shaft of the first motor is connected to the first motor, the output shaft of the first motor is connected to a docking rod passing through pool one and the side plate, and the end of the shaft is provided with a docking groove for inserting the docking rod.

[0007] Preferably, a water inlet pipe 2 and a water outlet pipe are respectively provided at both ends of the second pool, the water inlet pipe 2 is connected to the first pool, a discharge port is provided at the top of the second pool, and a main shaft is rotatably connected to the inner wall of the bottom of the second pool, and a push plate is fixed on the main shaft at the height of the discharge port. Under the action of the rotating assembly, the main shaft and the push plate rotate, and the push plate pushes the suspended wood chips down from the discharge port.

[0008] Preferably, the rotating assembly includes a sleeve fixedly mounted on the main shaft, and a plurality of blades distributed in a circular array are fixed on the circumferential outer wall of the sleeve. The water flowing in from the water inlet pipe and out from the water outlet pipe drives the blades, sleeve, main shaft and push plate to rotate together.

[0009] Preferably, the rotating assembly includes a ring gear fixedly mounted on the main shaft, a second motor is fixed to the inner wall of the bottom of pool 2, the output shaft of the second motor is connected to a gear meshing with the ring gear, the output shaft of the second motor drives the gear to rotate, and the gear meshing drives the ring gear, the main shaft and the push plate to rotate together.

[0010] Preferably, a mesh plate is sleeved on the main shaft and is located below the discharge port for filtering impurities.

[0011] Preferably, a pair of positioning rods with L-shaped bottom ends are fixed to the inner walls of the two circumferences of the pool, and a pair of positioning holes for inserting the positioning rods are opened on the outer wall of the circumference of the mesh plate. The mesh plate moves upward periodically under the action of the jacking assembly so that the top surface of the mesh plate is in contact with the bottom of the push plate. The rotating push plate pushes the impurities accumulated on the mesh plate out of the discharge port.

[0012] Preferably, the lifting assembly includes a plurality of hanging rods distributed in a circular array and fixed to the bottom of the mesh plate, the bottom ends of the hanging rods are arc-shaped structures, and when the blades rotate, they push the bottom ends of the hanging rods, causing the mesh plate to move upward periodically.

[0013] Preferably, the lifting assembly includes an electric push rod 2 located below the mesh plate, the output shaft of the electric push rod 2 is connected to the mesh plate, and the bottom end of the electric push rod 2 is fixed to the pool 2 through a fixing block.

[0014] The present invention also provides a method for treating wastewater from wood production, which uses the above-mentioned wastewater treatment device for wood production and comprises the following steps:

[0015] S1. The wood production wastewater is passed into a filtration tank to intercept and process large pieces of wood, filter out suspended wood chips and impurities, and obtain primary treated wastewater.

[0016] S2. The primary treated wastewater is passed into an oxidation tank, where microorganisms in the oxidation tank degrade organic matter in the wastewater to obtain secondary treated wastewater;

[0017] S3. The secondary treated wastewater is passed into a sedimentation tank, a flocculant is added to the sedimentation tank, and flocculants are removed from the wastewater by sedimentation to obtain tertiary treated wastewater;

[0018] S4. The tertiary treated wastewater is passed into the flotation tank, air is intermittently introduced into the flotation tank, and tiny suspended solids are removed to obtain the quaternary treated wastewater;

[0019] S5. Pass the quaternary treated wastewater into the disinfection tank, and introduce disinfectant into the disinfection tank to obtain standard discharged wastewater.

[0020] Compared with the prior art, the present invention provides a device and method for treating wastewater from wood production, which has the following beneficial effects:

[0021] 1. A device and method for treating wastewater from wood production. By setting up a pool 1, wood production wastewater enters the pool 1 from the water inlet pipe 1. Large pieces of wood in the wastewater will be blocked by an interception rack. The electric slide rail is started regularly, and the electric slide rail drives the slider and bucket to move upward. The bucket will move the large pieces of wood blocked on the interception rack upward, and then the bucket will rotate through the flip assembly to pour the large pieces of wood into a collection box, thereby intercepting and promptly cleaning out the large pieces of wood in the pool 1 to prevent the interception rack from being blocked.

[0022] 2. A wastewater treatment device and method for wood production, which is provided with a flip assembly. When the bucket moves to a predetermined height, an output shaft of an electric push rod drives a first motor and a docking rod to move inward until the docking rod is inserted into a docking groove. Then, the output shaft of the first motor drives the docking rod, the shaft rod, and the bucket to rotate so as to pour out the large pieces of wood in the bucket.

[0023] 3. A device and method for treating wastewater used in wood production. By setting a pusher plate, the treated wastewater from pool one flows into pool two through water inlet pipe two. Since wood chips will be suspended on the water surface, it is only necessary to control the liquid level in pool two to be near the discharge port. Then, under the action of the rotating assembly, the main shaft and the pusher plate rotate, and the pusher plate pushes the suspended wood chips from the discharge port, thereby cleaning up the suspended wood chips.

[0024] 4. A wastewater treatment device and method for wood production, which provides a rotating assembly, wherein the water flowing in from the second water inlet pipe and out from the water outlet pipe drives the blade, sleeve, main shaft and push plate to rotate together, or the gear is driven to rotate by the output shaft of the second motor, and the gear meshing drives the ring gear, main shaft and push plate to rotate together.

[0025] 5. A wastewater treatment device and method for wood production, which sets a mesh plate, and the mesh plate periodically moves upward under the action of a lifting assembly so that the top surface of the mesh plate is in contact with the bottom of a push plate. The rotating push plate pushes out the impurities accumulated on the mesh plate from the discharge port, thereby cleaning the impurities filtered on the mesh plate in time to avoid clogging of the mesh plate.

[0026] 6. A wastewater treatment device and method for wood production, which provides a jacking assembly. When the blade rotates, it pushes the bottom end of the hanging rod, causing the mesh plate to move upward periodically so that the top surface of the mesh plate is in contact with the bottom of the push plate, or the electric push rod 2 is periodically started, and the output shaft of the electric push rod 2 drives the mesh plate to move upward so that the top surface of the mesh plate is in contact with the bottom of the push plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic diagram of the overall structure of a wood production wastewater treatment device proposed by the present invention;

[0028] FIG2 is a schematic diagram of the internal structure of a pool 1 of a wood production wastewater treatment device proposed by the present invention;

[0029] FIG3 is a schematic diagram of the installation structure between the bucket and the side plates of a wood production wastewater treatment device proposed by the present invention;

[0030] FIG4 is an enlarged structural diagram of point A of a wood production wastewater treatment device proposed in FIG3 of the present invention;

[0031] FIG5 is an enlarged structural diagram of point B of a wood production wastewater treatment device proposed in FIG2 of the present invention;

[0032] FIG6 is a schematic structural diagram of the interior of a second tank of a wood production wastewater treatment device according to the present invention from a first angle;

[0033] FIG7 is a schematic diagram of the structure of a rotating assembly of a wood production wastewater treatment device proposed by the present invention;

[0034] FIG8 is a schematic diagram of the structure of the interior of a second tank of a wood production wastewater treatment device according to the present invention from a second angle;

[0035] FIG9 is a schematic structural diagram of a jacking assembly of a wood production wastewater treatment device proposed by the present invention;

[0036] FIG10 is an enlarged structural diagram of point C of a wood production wastewater treatment device proposed in FIG8 of the present invention.

[0037] In the figure: 1. Pool 1; 2. Side panel; 3. Interceptor frame; 4. Water inlet pipe 1; 5. Collection box; 6. Bucket; 7. Electric slide rail; 8. Slider; 9. Shaft rod; 10. Docking groove; 11. U-shaped frame; 12. Electric push rod 1; 13. First motor; 14. Docking rod; 15. Pool 2; 16. Water inlet pipe 2; 17. Water outlet pipe; 18. Discharge port; 19. Spindle; 20. Push plate; 21. Sleeve; 22. Blade; 23. Ring gear; 24. Gear; 25. Second motor; 26. Screen; 27. Positioning port; 28. Positioning rod; 29. ​​Hanging rod; 30. Electric push rod 2; 31. Fixing block. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0040] Example

[0041] Referring to Figures 1-10, a wastewater treatment device for wood production includes a filter tank, which includes a tank 1 and a tank 2 15. The tank 1 is used to intercept and process large pieces of wood, and the tank 2 15 is used to filter out suspended wood chips and impurities. An inlet pipe 4 is provided at one end of the tank 1. Side panels 2 are fixed to the inner walls of both sides of the tank 1. The same interception frame 3 is fixed between the two side panels 2. An electric slide rail 7 is embedded in the inner side of the side panel 2. A slider 8 is slidably connected to the electric slide rail 7. A shaft rod 9 is rotatably connected to the slider 8. The same shaft rod 9 is fixed between the two shaft rods 9. A bucket 6, a collection box 5 is fixed on the top of the interception frame 3 away from the bucket 6. The wood production wastewater enters the pool 1 from the water inlet pipe 4. The large pieces of wood in the wastewater will be blocked by the interception frame 3. The electric slide rail 7 is started regularly, and the electric slide rail 7 drives the slider 8 and the bucket 6 to move upward. The bucket 6 drives the large pieces of wood intercepted on the interception frame 3 upward, and then drives the bucket 6 to rotate through the flip assembly to pour the large pieces of wood into the collection box 5, thereby intercepting and cleaning up the large pieces of wood in the pool 1 in time to avoid the interception frame 3 being blocked.

[0042] Furthermore, the flipping assembly includes a pair of U-shaped frames 11 respectively fixed on both sides of the pool 1, and an electric push rod 12 is fixed on the U-shaped frame 11. The output shaft of the electric push rod 12 is connected to the first motor 13, and the output shaft of the first motor 13 is connected to the first motor 13. The output shaft of the first motor 13 is connected to the docking rod 14 passing through the pool 1 and the side panel 2. The end of the shaft rod 9 is provided with a docking groove 10 for inserting the docking rod 14. When the bucket 6 moves to a predetermined height, the output shaft of the electric push rod 12 drives the first motor 13 and the docking rod 14 to move inward until the docking rod 14 is inserted into the docking groove 10, and then the output shaft of the first motor 13 drives the docking rod 14, the shaft rod 9 and the bucket 6 to rotate so as to pour out the large pieces of wood in the bucket 6.

[0043] Furthermore, an inlet pipe 16 and an outlet pipe 17 are respectively provided at both ends of the pool 2 15. The inlet pipe 16 is connected to the pool 1 1. A discharge port 18 is provided at the top of the pool 2 15. The inner wall of the bottom of the pool 2 15 is rotatably connected to a main shaft 19. A pusher plate 20 is fixed on the main shaft 19 at the height of the discharge port 18. The treated wastewater from the pool 1 1 flows into the pool 2 15 through the inlet pipe 16. Since the wood chips will be suspended on the water surface, it is only necessary to control the liquid level in the pool 2 15 to be near the discharge port 18. Then, under the action of the rotating component, the main shaft 19 and the pusher plate 20 rotate, and the pusher plate 20 pushes the suspended wood chips from the discharge port 18, thereby cleaning up the suspended wood chips.

[0044] Furthermore, the rotating assembly includes a sleeve 21 fixedly mounted on the main shaft 19, and a plurality of blades 22 distributed in a circular array are fixed on the circumferential outer wall of the sleeve 21. The water flowing in from the water inlet pipe 16 and out from the water outlet pipe 17 drives the blades 22, the sleeve 21, the main shaft 19 and the push plate 20 to rotate together.

[0045] Furthermore, the rotating assembly includes a ring gear 23 fixedly mounted on the main shaft 19, a second motor 25 is fixed to the inner wall of the bottom of the tank 15, and the output shaft of the second motor 25 is connected to a gear 24 meshing with the ring gear 23. The output shaft of the second motor 25 drives the gear 24 to rotate, and the meshing of the gear 24 drives the ring gear 23, the main shaft 19 and the push plate 20 to rotate together.

[0046] Furthermore, a mesh plate 26 is sleeved on the main shaft 19 and is located below the discharge port 18 for filtering impurities.

[0047] Furthermore, a pair of positioning rods 28 with L-shaped bottom ends are fixed to the inner circumferential wall of pool 2 15, and a pair of positioning openings 27 for inserting the positioning rods 28 are opened on the outer circumferential wall of the mesh plate 26. The mesh plate 26 moves upward periodically under the action of the jacking assembly so that the top surface of the mesh plate 26 is in contact with the bottom of the push plate 20. The rotating push plate 20 pushes the impurities accumulated on the mesh plate 26 out of the discharge port 18, thereby cleaning the impurities filtered on the mesh plate 26 in time to avoid clogging of the mesh plate 26.

[0048] Furthermore, the lifting assembly includes a plurality of hanging rods 29 distributed in a circular array and fixed at the bottom of the mesh plate 26. The bottom end of the hanging rod 29 is an arc-shaped structure. When the blade 22 rotates, it pushes the bottom end of the hanging rod 29, causing the mesh plate 26 to move upward periodically so that the top surface of the mesh plate 26 is in contact with the bottom of the push plate 20.

[0049] Furthermore, the lifting assembly includes an electric push rod 2 30 located below the mesh plate 26, the output shaft of the electric push rod 2 30 is connected to the mesh plate 26, and the bottom end of the electric push rod 2 30 is fixed to the pool 2 15 through a fixed block 31. The electric push rod 2 30 is started periodically, and the output shaft of the electric push rod 2 30 drives the mesh plate 26 to move upward so that the top surface of the mesh plate 26 is in contact with the bottom of the push plate 20.

[0050] The present invention also provides a method for treating wastewater from wood production, which uses the above-mentioned wastewater treatment device for wood production and comprises the following steps:

[0051] S1. The wood production wastewater is passed into a filtration tank to intercept and process large pieces of wood, filter out suspended wood chips and impurities, and obtain primary treated wastewater.

[0052] S2. The primary treated wastewater is passed into an oxidation tank, where microorganisms in the oxidation tank degrade organic matter in the wastewater to obtain secondary treated wastewater;

[0053] S3. The secondary treated wastewater is passed into a sedimentation tank, a flocculant is added to the sedimentation tank, and flocculants are removed from the wastewater by sedimentation to obtain tertiary treated wastewater;

[0054] S4. The tertiary treated wastewater is passed into the flotation tank, air is intermittently introduced into the flotation tank, and tiny suspended solids are removed to obtain the quaternary treated wastewater;

[0055] S5. Pass the quaternary treated wastewater into the disinfection tank, and introduce disinfectant into the disinfection tank to obtain standard discharged wastewater.

[0056] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A wood production wastewater treatment device, comprising a filter tank, characterized in that: The filtering pool comprises a pool 1 (1) and a pool 2 (15), the pool 1 (1) being used for intercepting and processing large pieces of wood, the pool 2 (15) being used for filtering out suspended wood chips and impurities, a water inlet pipe 1 (4) being provided at one end of the pool 1 (1), side panels (2) being fixed to the inner walls of both sides of the pool 1 (1), a same interception frame (3) being fixed between the two side panels (2), an electric slide rail (7) being embedded in the inner side of the side panel (2), a slider (8) being slidably connected in the electric slide rail (7), a shaft (9) being rotatably connected in the slider (8), a same bucket (6) being fixed between the two shaft rods (9), a collection box (5) being fixed to the top of the interception frame (3) away from the bucket (6), the electric slide rail (7) driving the slider (8) and the bucket (6) to move upwards, the bucket (6) driving the large pieces of wood intercepted on the interception frame (3) upwards, and then driving the bucket (6) to rotate through a flip assembly to pour the large pieces of wood into the collection box (5).

2. A wood production wastewater treatment device according to claim 1, characterized in that: The flip assembly comprises a pair of U-shaped frames (11) respectively fixed on both sides of the pool (1), an electric push rod (12) is fixed on the U-shaped frame (11), the output shaft of the electric push rod (12) is connected to the first motor (13), the output shaft of the first motor (13) is connected to the first motor (13), the output shaft of the first motor (13) is connected to a docking rod (14) passing through the pool (1) and the side plate (2), and the end of the shaft rod (9) is provided with a docking groove (10) for the docking rod (14) to be inserted.

3. A wood production wastewater treatment device according to claim 1, characterized in that: The two ends of the second pool (15) are respectively provided with a water inlet pipe (16) and a water outlet pipe (17). The water inlet pipe (16) is connected to the first pool (1). The top of the second pool (15) is provided with a discharge port (18). The inner wall of the bottom of the second pool (15) is rotatably connected to a main shaft (19). A push plate (20) located at the height of the discharge port (18) is fixed to the main shaft (19). Under the action of the rotating assembly, the main shaft (19) and the push plate (20) rotate, and the push plate (20) pushes the suspended wood chips down from the discharge port (18).

4. A wood production wastewater treatment device according to claim 3, characterized in that: The rotating assembly comprises a sleeve (21) fixedly mounted on a main shaft (19), a plurality of blades (22) distributed in a circular array being fixed on the circumferential outer wall of the sleeve (21), and water flowing in from the second water inlet pipe (16) and out from the water outlet pipe (17) drives the blades (22), the sleeve (21), the main shaft (19) and the push plate (20) to rotate together.

5. A wood production wastewater treatment device according to claim 3, characterized in that: The rotating assembly comprises a gear ring (23) fixedly sleeved on the main shaft (19); a second motor (25) is fixedly mounted on the inner wall of the bottom of the second tank (15); an output shaft of the second motor (25) is connected to a gear (24) meshing with the gear ring (23); the output shaft of the second motor (25) drives the gear (24) to rotate; the meshing of the gear (24) drives the gear ring (23), the main shaft (19) and the push plate (20) to rotate together.

6. A wood production wastewater treatment device according to claim 4, characterized in that: The main shaft (19) is sleeved with a mesh plate (26), which is located below the discharge port (18) and is used to filter impurities.

7. A wood production wastewater treatment device according to claim 6, characterized in that: A pair of positioning rods (28) with L-shaped bottom ends are fixed on the inner circumferential wall of the pool 2 (15), and a pair of positioning openings (27) for inserting the positioning rods (28) are opened on the outer circumferential wall of the mesh plate (26). The mesh plate (26) periodically moves upward under the action of the jacking assembly so that the top surface of the mesh plate (26) is in contact with the bottom of the push plate (20), and the rotating push plate (20) pushes the impurities accumulated on the mesh plate (26) out of the discharge port (18).

8. A wood production wastewater treatment device according to claim 7, characterized in that: The lifting assembly comprises a plurality of hanging rods (29) distributed in a circular array and fixed to the bottom of the mesh plate (26); the bottom end of the hanging rod (29) is an arc-shaped structure; when the blade (22) rotates, it pushes the bottom end of the hanging rod (29), causing the mesh plate (26) to move upward periodically.

9. The wood production wastewater treatment device according to claim 7, characterized in that: The lifting assembly comprises an electric push rod 2 (30) located below the mesh plate (26), the output shaft of the electric push rod 2 (30) being connected to the mesh plate (26), and the bottom end of the electric push rod 2 (30) being fixed to the pool 2 (15) via a fixing block (31).

10. A method for treating wastewater from wood production, using the device for treating wastewater from wood production according to any one of claims 1 to 9, characterized in that: The steps include: S1. Pass the wood production wastewater into the filtration tank, intercept and process large pieces of wood, filter out suspended wood chips and impurities, and obtain primary treated wastewater; S2. The primary treated wastewater is passed into an oxidation pond, where the microorganisms in the oxidation pond degrade the organic matter in the wastewater to obtain secondary treated wastewater; S3. The secondary treated wastewater is passed into a sedimentation tank, a flocculant is added to the sedimentation tank, and flocculants in the wastewater are removed by sedimentation to obtain tertiary treated wastewater; S4. The tertiary treated wastewater is passed into the flotation tank, air is intermittently introduced into the flotation tank, and tiny suspended solids are removed to obtain the quaternary treated wastewater; S5. Pass the quaternary treated wastewater into the disinfection tank, and pass disinfectant into the disinfection tank to obtain standard discharged wastewater.

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