Multi-stage filtering structure for sewage treatment

Abstract

The present application relates to sewage treatment technical field, especially sewage treatment with multistage filter structure, including sewage treatment tank, sewage treatment tank upper near its left top fixedly connected with feed pipe, sewage treatment tank top surface fixedly connected with dosing pipe, sewage treatment tank bottom fixedly connected with accumulation frame, wherein, the bottom of the accumulation frame is fixedly installed with the control valve of the blow-off pipe, the side surface of the inner wall of the accumulation frame is fixedly connected with the interception filter screen, the sewage treatment tank upper near its left top is provided with the placing groove, the inner wall of the placing groove is sealedly clamped with the metal filter screen frame with fine particles, the rear side of the inner wall of the sewage treatment tank is fixedly installed with the water level sensor, the rear side of the inner wall of the sewage treatment tank is fixedly connected with the clamping sleeve, and the inner wall of the clamping sleeve is clamped with the multiple filter screen frame, the sewage treatment tank is provided with multilayer multiple filter screen plate inside, the sewage is purified and filtered, and the upper and lower layered multiple filtration purification effect is realized.

Description

A multi-stage filtration structure for wastewater treatment Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a multi-stage filtration structure for wastewater treatment. Background Technology

[0002] In real life, polluted water from domestic and industrial processes is often discharged into rivers, resulting in rivers containing a high amount of organic matter and damaging the ecological environment. Therefore, sewage treatment systems are needed to protect rivers. Sewage treatment refers to the process of purifying wastewater generated in domestic and industrial processes so that it meets the water quality requirements for discharge into a water body or for reuse. One type of integrated sewage treatment equipment condenses the sewage treatment process into a single machine, offering high integration and saving the hassle of finding someone to design the sewage treatment process and carry out the necessary infrastructure construction.

[0003] The existing sewage treatment process uses filtration structures to treat and filter sewage, mostly in a horizontal position to trap impurities in the sewage. However, over a long period of sewage filtration, the filtration structure is prone to clogging, especially in the coarse filtration stage. Frequent replacement will affect the treatment efficiency of sewage and bring certain adverse effects to actual use. Therefore, improvements are needed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a multi-stage filtration structure for wastewater treatment, which effectively solves the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a multi-stage filtration structure for wastewater treatment, including a wastewater treatment tank.

[0006] A feed pipe is fixedly connected to the top of the wastewater treatment tank near its left side;

[0007] A dosing pipe is fixedly connected to the top surface of the wastewater treatment tank;

[0008] A sedimentation frame is fixedly connected to the bottom of the wastewater treatment tank;

[0009] The bottom of the sedimentation frame is fixedly equipped with a drain pipe with a control valve. A trap filter screen is fixedly connected to the side of the inner wall of the sedimentation frame. A placement slot is opened on the top of the sewage treatment tank near its left side. A metal filter screen frame with fine particles is sealed and clamped to the inner wall of the placement slot. A water level sensor is fixedly installed on the rear side of the inner wall of the sewage treatment tank. A locking sleeve is fixedly connected to the rear side of the sewage treatment tank near its inner wall. Multiple filter screen frames are clamped to the inner wall of the locking sleeve.

[0010] Furthermore, a pull rod is fixedly connected to the front side of the multi-filter frame, and the surface of the multi-filter frame is sealed to the inner wall of the sewage treatment tank. A sieving and purification frame is fixedly connected to the bottom of the sewage treatment tank near its right side. A force-relieving discharge roller is rotatably connected to the front side of the inner wall of the sieving and purification frame via a pin. An electric cylinder is fixedly installed on the front side of the sieving and purification frame, and a push-pull rod is fixedly connected to the output end of the electric cylinder.

[0011] Furthermore, a sliding groove is provided on the front side of the sieving and purification frame, a sliding block is slidably connected to the inner wall of the sliding groove, a lateral sealing shaking screen plate is fixedly connected to the surface of the sliding block, a spherical sliding rod is fixedly connected to the front side of the sliding block, a movable sliding sleeve is slidably connected to the surface of the spherical sliding rod, and the surface of the movable sliding sleeve near its middle part and the surface of the front side of the sieving and purification frame are rotatably connected by a pin. The right side of the movable sliding sleeve near its bottom is rotatably connected to one end of a push-pull rod by a pin seat. An aerator is fixedly installed on the rear side of the sieving and purification frame, and the output end of the aerator is located below the lateral sealing shaking screen plate. A post-treatment frame is fixedly connected to the right side of the sieving and purification frame near its inner wall, and a discharge frame is fixedly connected to the bottom of the sieving and purification frame near its right side.

[0012] Furthermore, a side plate is fixedly connected to the side of the metal filter frame near its top, and the inside of the side plate and the top of the inner wall of the placement groove are both threaded with positioning screws through internal thread grooves.

[0013] Furthermore, a pull plate is fixedly connected to the top of the metal filter frame, and the outer surface of the pull plate is formed with an anti-slip texture.

[0014] Furthermore, a drive motor is fixedly installed on the top of the sewage treatment tank, a rotating rod is fixedly connected to the output end of the drive motor, a waterproof spring telescopic rod is fixedly connected to the side of the rotating rod, an elastic ball pad is fixedly connected to one end of the waterproof spring telescopic rod, and the surface of the elastic ball pad abuts against the side of the metal filter frame.

[0015] Furthermore, there are at least two sedimentation frames and at least two metal filter frames, and these two sedimentation frames and metal filter frames are connected in a left-right position in the wastewater treatment tank.

[0016] Furthermore, the main body of the multi-filter frame is a hollow frame, and a guide groove is provided at the bottom of the inner wall of the hollow frame. An activated carbon filter, a PP cotton filter core, and a deodorizing filter plate are slidably connected to the inner wall of the guide groove.

[0017] Furthermore, a smooth guide plate is fixedly connected to the left side of the sieve purification frame near its inner wall. The smooth guide plate is located directly below the unloading roller, and the surface of the unloading roller and the surface of the smooth guide plate do not contact each other.

[0018] Furthermore, the main body of the post-processing frame is a sealed frame, an ion exchange resin filter plate is fixedly connected to the left side of the inner wall of the sealed frame, an ultraviolet germicidal lamp is fixedly installed at the bottom of the inner wall of the sealed frame, and waterproof heating plates are fixedly installed on the rear and front sides of the inner wall of the sealed frame.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. In this invention, wastewater can be introduced and discharged through the feed pipe on the wastewater treatment tank. The wastewater will first pass through a metal filter frame for initial interception. Because the metal filter frame is located directly above the interception filter, it can intercept impurities. If impurities adhere to the metal filter frame, the drive motor can be periodically controlled to rotate the rotating rod. The rotation of the rotating rod can drive the elastic ball pad to repeatedly strike the metal filter frame, knocking off the adhered impurities. Through the spring extension and return action of the waterproof spring telescopic rod, elastic knocking can be performed. The metal filter frame is effective in filtering wastewater, and the fine particles inside the metal filter frame can perform preliminary coarse filtration. The metal filter frame can be placed in the placement tank for easy removal later. The metal filter frame is usually positioned and locked by the side plate, and the positioning screw is used to strengthen the positioning and placement effect of the metal filter frame, and enhance the stability of the metal filter frame under the impact of water flow. The chemical dosing pipe can be used to add reaction purification drugs to adsorb impurities in wastewater and precipitate them on the interception filter screen. This completes the reaction, adsorption, interception, precipitation and aggregation of large particulate impurities in wastewater for subsequent cleaning.

[0021] 2. In this invention, the wastewater after treatment and filtration can be further purified by setting multiple filter frames. That is, internal filtration is carried out by activated carbon filter, PP cotton filter core, and deodorizing filter plate to adsorb and filter fine impurities in the wastewater. Since the multiple filter frames are sealed in the wastewater treatment box, the multiple filter frames can be taken out of the wastewater treatment box by pulling rod to clean and replace the filter core plate, so as to achieve the purification and filtration effect of multiple filter elements.

[0022] 3. In this invention, the internal structure of the sieve purification frame allows for multiple filtrations and secondary disinfection of wastewater. The water flow is buffered and discharged through the unloading roller to ensure a smooth flow within the sieve purification frame. An aerator injects ozone into the sieve purification frame, positioned directly below the side-sealed swaying screen plate. An electric cylinder drives a push-pull rod, repeatedly pulling and pushing to control the movement of the movable sliding sleeve. Since the pivot point of the movable sliding sleeve is located between two sliding blocks, it can be controlled by the spherical sliding rod on the sliding blocks. The device swings within a limited range, while the movable sliding sleeve pushes the sliding block to slide repeatedly left and right in the sliding groove, thereby controlling the upper and lower lateral sealing swaying screen plates to sway slightly left and right. This allows the odor generated by aeration to fully react and be purified inside the sieving and purification frame. The wastewater treated by ozone aeration enters the post-treatment frame through the ion exchange resin filter plate, where it undergoes final purification under the heating and sterilization treatment of ultraviolet germicidal lamps and waterproof heating plates during operation. The wastewater is then discharged through the discharge frame after multiple filtration and purification treatments, achieving the effect of wastewater purification and sterilization. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 is a schematic diagram of the multi-stage filtration structure for wastewater treatment in an embodiment of the present invention;

[0025] Figure 2 is a cross-sectional view of the sieving and purification frame in an embodiment of the present invention;

[0026] Figure 3 is a cross-sectional view of the wastewater treatment tank in an embodiment of the present invention;

[0027] Figure 4 is a schematic diagram of the structure of the metal filter frame in an embodiment of the present invention;

[0028] Figure 5 is a schematic diagram of the structure of the metal filter frame in an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram of the structure of the rotating rod in an embodiment of the present invention;

[0030] Figure 7 is an enlarged view of point A in Figure 1;

[0031] Figure 8 is an enlarged view of point B in Figure 2.

[0032] Attached reference numerals: 1. Wastewater treatment tank; 2. Feed pipe; 3. Dosing pipe; 4. Sedimentation frame; 5. Sewage discharge pipe; 6. Retention filter screen; 7. Placement trough; 8. Metal filter screen frame; 9. Water level sensor; 10. Locking sleeve; 11. Multiple filter screen frame; 12. Screening and purification frame; 13. Unloading and discharge roller; 14. Electric cylinder; 15. Sliding trough; 16. Sliding block; 17. Lateral sealing shaking screen plate; 18. Spherical slide bar; 19. Movable sliding sleeve; 20. Aerator; 21. 21. Post-processing frame; 22. Discharge frame; 23. Side plate; 24. Positioning screw; 25. Pull plate; 26. Drive motor; 27. Rotating rod; 28. Waterproof spring telescopic rod; 29. ​​Elastic ball pad; 30. Guide groove; 31. Activated carbon filter screen; 32. PP cotton filter core screen; 33. Deodorizing filter screen plate; 34. Smooth guide plate; 35. Ion exchange resin filter screen plate; 36. Ultraviolet germicidal lamp; 37. Waterproof heating plate; 38. Pull rod; 39. Push-pull rod. 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.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] As shown in Figures 1 to 8, a multi-stage filtration structure for wastewater treatment includes a wastewater treatment tank 1. A feed pipe 2 is fixedly connected to the top of the wastewater treatment tank 1 near its left side. A dosing pipe 3 is fixedly connected to the surface of the top of the wastewater treatment tank 1. A sedimentation frame 4 is fixedly connected to the bottom of the wastewater treatment tank 1. A drain pipe 5 with a control valve is fixedly installed at the bottom of the sedimentation frame 4. A trap filter 6 is fixedly connected to the side of the inner wall of the sedimentation frame 4. A placement groove 7 is opened on the top of the wastewater treatment tank 1 near its left side. A metal filter frame 8 with fine particles is sealed and clamped to the inner wall of the placement groove 7. A water level sensor 9 is fixedly installed on the rear side of the inner wall of the wastewater treatment tank 1. A locking sleeve 10 is fixedly connected to the rear side of the inner wall of the wastewater treatment tank 1. Multiple filter frames 11 are clamped to the inner wall of the locking sleeve 10.

[0037] The specific implementation process of this invention is as follows: During use, the entire wastewater treatment tank 1 can be fixedly installed at a suitable filtration point. Wastewater can be introduced and discharged through the feed pipe 2. The wastewater will first pass through the metal filter frame 8 for initial interception. Because the metal filter frame 8 is located directly above the interception filter 6, it can intercept impurities. If impurities adhere to the metal filter frame 8, the drive motor 26 can be periodically controlled to rotate the rotating rod 27. The rotation of the rotating rod 27 can cause the elastic ball pad 29 to repeatedly strike the metal filter frame 8, knocking off the adhered impurities. Through the spring extension and return action of the waterproof spring telescopic rod 28, the metal filter frame 8 can be elastically struck. Furthermore, the interior of the metal filter frame 8... Fine particles can be initially filtered in the wastewater. The metal filter frame 8 is placed in the placement tank 7 for easy removal later. The metal filter frame 8 is normally positioned and secured by the side plate 23, and the positioning screw 24 enhances its positioning and stability under water flow impact. Reaction purification chemicals can be added through the dosing pipe 3 to adsorb impurities in the wastewater and cause them to settle on the interception filter screen 6. The treated and filtered wastewater then undergoes further purification through multiple filter frames 11, namely, internal filtration through activated carbon filter screen 31, PP cotton filter core screen 32, and deodorizing filter screen plate 33, adsorbing and filtering fine impurities in the wastewater. Furthermore, the multiple filter frames 11 are sealed and secure. Installed in the sewage treatment tank 1, the multi-layer filter frame 11 can be removed from the sewage treatment tank 1 via the pull rod 38 for cleaning and replacement of the filter element plates. After basic filtration, the sewage will flow through the lower outlet of the sewage treatment tank 1 into the interior of the sieve purification frame 12. The water flow is buffered and discharged by the pressure-relief roller 13 to ensure a smooth flow within the sieve purification frame 12. The aerator 20 operates to inject ozone into the interior of the sieve purification frame 12, with the injection position directly below the side-sealed shaking screen plate 17. The electric cylinder 14 is controlled to drive the push-pull rod 39 to move, repeatedly pulling and pushing to control the movement of the movable sliding sleeve 19. Because the pivot point of the movable sliding sleeve 19 is located between the two sliding blocks 16, it can... The ball slide rod 18 on the sliding block 16 swings within its limited range, while the movable sliding sleeve 19 pushes the sliding block 16 to slide repeatedly left and right in the sliding groove 15, thereby controlling the upper and lower lateral sealing shaking screen plates 17 to shake slightly left and right, so that the odor generated by aeration can be fully reacted and purified inside the sieve purification frame 12. The wastewater after ozone aeration treatment will enter the interior of the post-treatment frame 21 through the ion exchange resin filter plate 35, and undergo final purification under the heating and sterilization treatment of the ultraviolet germicidal lamp 36 and the waterproof heating plate 37 during operation. The wastewater after multiple filtration and purification treatment by the discharge frame 22 is discharged, which can realize the effect of multiple filtration and purification in upper and lower layers and the reaction and interception treatment of impurities.

[0038] In this invention, a pull rod 38 is fixedly connected to the front side of the multi-screen filter frame 11, and the surface of the multi-screen filter frame 11 is sealed to the inner wall of the sewage treatment tank 1. The multi-screen filter frame 11 can be removed from the sewage treatment tank 1 for cleaning and replacement of the filter element plate by means of the pull rod 38. A sieve purification frame 12 is fixedly connected to the bottom of the sewage treatment tank 1 near its right side. The front side of the inner wall of the sieve purification frame 12 is rotatably connected to a pressure relief roller 13 by a pin. The pressure relief roller 13 buffers and discharges the water flow to ensure a smooth flow of water in the sieve purification frame 12. An electric cylinder 14 is fixedly installed on the front side of the sieve purification frame 12. A push-pull rod 39 is fixedly connected to the output end of the electric cylinder 14. The operation of the electric cylinder 14 drives the push-pull rod 39 to move, and the repeated pulling and pushing controls the movement of the movable sliding sleeve 19.

[0039] In this invention, a sliding groove 15 is provided on the front side of the sieving and purification frame 12. A sliding block 16 is slidably connected to the inner wall of the sliding groove 15. A lateral sealing shaking screen plate 17 is fixedly connected to the surface of the sliding block 16. A spherical sliding rod 18 is fixedly connected to the front side of the sliding block 16. A movable sliding sleeve 19 is slidably connected to the surface of the spherical sliding rod 18. The surface of the movable sliding sleeve 19 near its middle part and the surface of the front side of the sieving and purification frame 12 are rotatably connected by a pin. The right side of the movable sliding sleeve 19 near its bottom is rotatably connected to one end of the push-pull rod 39 by a pin seat. An aerator 20 is fixedly installed on the rear side of the sieving and purification frame 12. The output end of the aerator 20 is located below the lateral sealing shaking screen plate 17. A post-treatment frame 21 is fixedly connected to the right side of the sieving and purification frame 12 near its inner wall. A discharge frame 22 is fixedly connected to the bottom of the sieving and purification frame 12 near its right side.

[0040] In this invention, a side plate 23 is fixedly connected to the side of the metal filter frame 8 near its top. The interior of the side plate 23 and the top of the inner wall of the placement groove 7 are both threaded with positioning screws 24 via internal threaded grooves. A pull plate 25 is fixedly connected to the top of the metal filter frame 8. The outer surface of the pull plate 25 has an anti-slip texture. The metal filter frame 8 is normally positioned and secured by the side plate 23. The positioning screws 24 are used to enhance the positioning and placement effect of the metal filter frame 8, improving its stability under water flow impact. The added pull plate 25 facilitates the removal and insertion of the metal filter frame 8 by workers.

[0041] In this invention, a drive motor 26 is fixedly installed on the top of the sewage treatment tank 1. A rotating rod 27 is fixedly connected to the output end of the drive motor 26. A waterproof spring telescopic rod 28 is fixedly connected to the side of the rotating rod 27. An elastic ball pad 29 is fixedly connected to one end of the waterproof spring telescopic rod 28, and the surface of the elastic ball pad 29 abuts against the side of the metal filter frame 8. The operation of the drive motor 26 drives the rotating rod 27 to rotate. The rotation of the rotating rod 27 can drive the elastic ball pad 29 to repeatedly strike the metal filter frame 8, thereby knocking off the attached impurities. Through the spring extension and reset action of the waterproof spring telescopic rod 28, the effect of elastically striking the metal filter frame 8 can be achieved.

[0042] In this invention, there are at least two sedimentation frames 4 and at least two metal filter frames 8, and the two sedimentation frames 4 and the metal filter frames 8 are connected in a left-right position in the sewage treatment tank 1. The sedimentation frames 4 and the metal filter frames 8 can perform multiple filtration and interception functions.

[0043] In this invention, a smooth guide plate 34 is fixedly connected to the left side of the sieve purification frame 12 near its inner wall. The smooth guide plate 34 is located directly below the unloading discharge roller 13, and the surface of the unloading discharge roller 13 and the surface of the smooth guide plate 34 do not contact each other. The added smooth guide plate 34 is located below the unloading discharge roller 13, which can unload and discharge the water flow impacted above the discharge guide.

[0044] In this invention, the main body of the multi-filter frame 11 is a hollow frame. A guide groove 30 is provided at the bottom of the inner wall of the hollow frame. An activated carbon filter 31, a PP cotton filter core 32, and a deodorizing filter plate 33 are slidably connected to the inner wall of the guide groove 30. Internal filtration is performed through the activated carbon filter 31, PP cotton filter core 32, and deodorizing filter plate 33 to adsorb and filter fine impurities in the wastewater. The main body of the post-treatment frame 21 is a sealed frame. An ion exchange resin filter plate 35 is fixedly connected to the left side of the inner wall of the sealed frame. An ultraviolet germicidal lamp 36 is fixedly installed at the bottom of the inner wall of the sealed frame. Waterproof heating plates 37 are fixedly installed on both the rear and front sides of the inner wall of the sealed frame. Wastewater treated with ozone aeration enters the interior of the post-treatment frame 21 through the ion exchange resin filter plate 35 and undergoes final purification under the heating and sterilization treatment of the ultraviolet germicidal lamp 36 and the waterproof heating plate 37 during operation.

[0045] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage filtration structure for wastewater treatment, comprising a wastewater treatment tank (1), characterized in that: A feed pipe (2) is fixedly connected to the top of the sewage treatment tank (1) near its left side; a dosing pipe (3) is fixedly connected to the surface of the top of the sewage treatment tank (1); a sedimentation frame (4) is fixedly connected to the bottom of the sewage treatment tank (1); wherein, a drain pipe (5) with a control valve is fixedly installed at the bottom of the sedimentation frame (4), a trap filter (6) is fixedly connected to the side of the inner wall of the sedimentation frame (4), a placement groove (7) is opened on the top of the sewage treatment tank (1) near its left side, a metal filter frame (8) with fine particles is sealed and snapped into the inner wall of the placement groove (7), a water level sensor (9) is fixedly installed on the rear side of the inner wall of the sewage treatment tank (1), and the sewage treatment tank ( 1) A locking sleeve (10) is fixedly connected to the rear side near the inner wall of the wastewater treatment tank (1), and a multi-layer filter frame (11) is locked to the inner wall of the locking sleeve (10); a sieving and purification frame (12) is fixedly connected to the bottom of the wastewater treatment tank (1) near its right side, and a force-relieving discharge roller (13) is rotatably connected to the front side of the inner wall of the sieving and purification frame (12) through a pin shaft; an electric cylinder (14) is fixedly installed on the front side of the sieving and purification frame (12), and a push-pull rod (39) is fixedly connected to the output end of the electric cylinder (14); a sliding groove (15) is opened on the front side of the sieving and purification frame (12), and a sliding block (16) is slidably connected to the inner wall of the sliding groove (15), and the surface of the sliding block (16) is fixed. A lateral sealing swaying screen plate (17) is fixedly connected to the sway block (16). A spherical slide rod (18) is fixedly connected to the front side of the sway block (16). A movable sliding sleeve (19) is slidably connected to the surface of the spherical slide rod (18). The surface of the movable sliding sleeve (19) near its middle part and the surface of the front side of the sieving and purification frame (12) are rotatably connected by a pin. The right side of the movable sliding sleeve (19) near its bottom is rotatably connected to one end of a push-pull rod (39) by a pin seat. An aerator (20) is fixedly installed on the rear side of the sieving and purification frame (12). The output end of the aerator (20) is located below the lateral sealing swaying screen plate (17). A post-treatment device is fixedly connected to the right side of the sieving and purification frame (12) near its inner wall. The frame (21) has a discharge frame (22) fixedly connected to the bottom of the sieve purification frame (12) near its right side; a smooth guide plate (34) is fixedly connected to the left side of the sieve purification frame (12) near its inner wall. The smooth guide plate (34) is located directly below the unloading discharge roller (13), and the surface of the unloading discharge roller (13) and the surface of the smooth guide plate (34) do not contact each other; the main body of the post-processing frame (21) is a sealed frame. An ion exchange resin filter plate (35) is fixedly connected to the left side of the inner wall of the sealed frame. An ultraviolet germicidal lamp (36) is fixedly installed at the bottom of the inner wall of the sealed frame. Waterproof heating plates (37) are fixedly installed on the rear and front sides of the inner wall of the sealed frame.

2. The multi-stage filtration structure for wastewater treatment according to claim 1, characterized in that, A pull rod (38) is fixedly connected to the front side of the multi-filter frame (11), and the surface of the multi-filter frame (11) is sealed to the inner wall of the sewage treatment box (1).

3. The multi-stage filtration structure for wastewater treatment according to claim 1, characterized in that, A side plate (23) is fixedly connected to the side of the metal filter frame (8) near its top. The inside of the side plate (23) and the top of the inner wall of the placement groove (7) are both threaded with positioning screws (24) through internal thread grooves.

4. The multi-stage filtration structure for wastewater treatment according to claim 1, characterized in that, The top of the metal filter frame (8) is fixedly connected to a pull plate (25), and the outer surface of the pull plate (25) is formed with an anti-slip texture.

5. The multi-stage filtration structure for wastewater treatment according to claim 4, characterized in that, A drive motor (26) is fixedly installed on the top of the sewage treatment box (1). A rotating rod (27) is fixedly connected to the output end of the drive motor (26). A waterproof spring telescopic rod (28) is fixedly connected to the side of the rotating rod (27). An elastic ball pad (29) is fixedly connected to one end of the waterproof spring telescopic rod (28), and the surface of the elastic ball pad (29) abuts against the side of the metal filter frame (8).

6. The multi-stage filtration structure for wastewater treatment according to claim 1, characterized in that, The number of sedimentation frames (4) and metal filter frames (8) is at least two, and the sedimentation frames (4) and metal filter frames (8) are connected in a left-right position in the sewage treatment box (1).

7. The multi-stage filtration structure for wastewater treatment according to claim 1, characterized in that, The main body of the multi-filter frame (11) is a hollow frame. A guide groove (30) is provided at the bottom of the inner wall of the hollow frame. An activated carbon filter (31), a PP cotton filter core (32), and a deodorizing filter plate (33) are slidably connected to the inner wall of the guide groove (30).

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