A sewage treatment system for environmental engineering

Abstract

This utility model relates to the field of wastewater treatment technology and provides a wastewater treatment system for environmental engineering, including a wastewater treatment tank; several biofilm treatment sections are uniformly snapped onto the top of the wastewater treatment tank; each biofilm treatment section includes a winding frame; the winding frame includes a winding roller; several rubber strips are uniformly wound around the circumference of the winding roller along its axial direction; the surface of the rubber strips has snap-fit ​​grooves, and a rubber strip adapted to the snap-fit ​​grooves is fixed on its back; a hydrophilic strip-shaped biofilm is adapted to be connected between two adjacent rubber strips; the rubber strips are hollow in structure, and an exhaust pipe is fixed at their bottom; a one-way valve is installed on the exhaust pipe. This device uses a zipper structure to install the hydrophilic strip-shaped biofilm between adjacent rubber strips. As the rubber strips are wound / released, the hydrophilic strip-shaped biofilm is wound / released synchronously, facilitating the transportation and rapid recycling of the hydrophilic strip-shaped biofilm and improving the efficiency of wastewater treatment.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically, to a wastewater treatment system for environmental engineering. Background Technology

[0002] Ecological water treatment technology is a technology that treats environmental engineering wastewater in an original ecological way. It generally uses biofilms to adsorb and degrade organic pollutants, thereby purifying the wastewater. Biofilms are divided into strip-shaped biofilms and sheet-shaped biofilms.

[0003] For hydrophilic strip biofilms, they are typically suspended in the purification tank to treat wastewater. When the biofilm becomes heavily contaminated, it needs to be replaced to maintain its purification effect. During use, the hydrophilic strip biofilm absorbs moisture and organic matter. This moisture and organic matter remaining on the biofilm increases its weight, making it difficult for workers to remove and reducing the efficiency of its recycling. This, in turn, reduces the efficiency of wastewater treatment in environmental engineering. Furthermore, the excessive moisture of the biofilm makes subsequent processing inconvenient. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a wastewater treatment system for environmental engineering. A hydrophilic strip-shaped biofilm is installed between adjacent rubber strips via a zipper structure. As the rubber strips are wound / released, the hydrophilic strip-shaped biofilm is simultaneously wound / released, facilitating its transportation and rapid recycling, thus improving wastewater treatment efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wastewater treatment system for environmental engineering, comprising a wastewater treatment tank; a plurality of biofilm treatment sections are uniformly snapped onto the top of the wastewater treatment tank; each biofilm treatment section includes a winding frame; the winding frame includes a winding roller; a plurality of rubber strips are uniformly wound onto the circumferential side of the winding roller along its axial direction; the surface of each rubber strip has a snap-fit ​​groove, and a rubber strip adapted to the snap-fit ​​groove is fixed on its back; a hydrophilic strip-shaped biofilm is adapted to connect between adjacent rubber strips; the rubber... The tank has a hollow structure with an exhaust pipe fixed at its bottom; a one-way valve is installed on the exhaust pipe; a counterweight lifting plate is fixed between each exhaust pipe; internally threaded sleeves are symmetrically fixed on the surface of the counterweight lifting plate; several baffles are evenly fixed on the top of the sewage treatment tank; externally threaded sleeves are symmetrically fixed on the surface of the baffles; a guide hole is opened on the bottom surface of the externally threaded sleeve; a push rod is slidably installed in the guide hole; a stud is fixed at the bottom of the push rod and screwed to the internally threaded sleeve; the push rod slides in conjunction with the guide hole; a nut is screwed to the top of the externally threaded sleeve.

[0006] The present invention is further configured such that: a first cloth strip is fixed to the back of the rubber strip; a first chain tooth group is provided on the first cloth strip; a second cloth strip is symmetrically fixed to the side of the hydrophilic strip-shaped biofilm; a second chain tooth group is provided on the second cloth strip; a pull head is engaged between the first chain tooth group and the adjacent second chain tooth group; and a stop head is provided at both ends of the first cloth strip.

[0007] The present invention is further configured such that: a rotating shaft and a connecting pipe are respectively fixed at both ends of the take-up roller; the take-up frame also includes two sets of baffles that are respectively rotatably engaged with the rotating shaft and the connecting pipe; an ear plate is fixed on the side of the baffle; a vertical plate is fixed on the surface of the ear plate; a servo motor is fixed on the side of the vertical plate; and the output end of the servo motor is fixedly connected to one end of the rotating shaft.

[0008] The present invention is further configured such that: the rubber strip and the hydrophilic strip-shaped biofilm in the wound state form several sets of spiral cavities; the inside of the winding roller is hollow, and several vent holes are evenly opened on its peripheral side; a discharge port is opened on the outer peripheral side of the winding roller; a sealing cover is fixedly installed on the discharge port by fastening bolts; a sewage inlet pipe is connected to the side of the sewage treatment tank near its top, and a discharge pipe is connected to the opposite side of the tank near its bottom.

[0009] The present invention is further configured as follows: a vertical guide plate is fixed to the side of the ear plate; an inclined guide plate is fixed to the bottom surface of the vertical guide plate; several support plates are symmetrically fixed to the top of the sewage treatment tank; several sliding grooves are symmetrically opened on the top of the sewage treatment tank; a T-shaped plate is slidably arranged inside the sliding groove; several insertion rods are uniformly fixed to the side of the T-shaped plate; the insertion rods slide through the support plates; a return spring sleeved on the corresponding insertion rod is fixed between the T-shaped plate and the support plate; a ball head is fixed to the end of the insertion rod; and insertion holes that engage with the corresponding insertion rods are uniformly opened on the side of the vertical guide plate.

[0010] The present invention is further configured as follows: an air supply pipe is provided between adjacent rubber strips; an air inlet pipe is provided through the side of the baffle and fixedly connected to the air supply pipe; a compressed air pump is fixedly installed on the side of the sewage treatment tank; a delivery pipe is fixedly installed at the output end of the compressed air pump; a first branch pipe and a second branch pipe are sequentially provided on the periphery of the delivery pipe; an air plate is provided at the end of the first branch pipe, the second branch pipe and the delivery pipe; and a plurality of ear tubes are evenly provided on the side of the air plate.

[0011] The present invention is further configured such that: each of the ear tube ends is connected to a screw connector via a flexible tube; the air inlet pipe is screwed to the corresponding screw connector on the first branch pipe; the connecting pipe is screwed to the corresponding screw connector on the second branch pipe; a solenoid valve is provided near the end of the delivery pipe and on the first and second branch pipes; a controller is installed on the side of the sewage treatment tank; and the output end of the controller is electrically connected to the servo motor, the solenoid valve, and the compressed air pump, respectively.

[0012] The present invention is further configured as follows: a plurality of air guide pipes are uniformly fixed between the inner walls of the sewage treatment tank; a plurality of connecting holes are uniformly opened on the periphery of the air guide pipes; a plurality of annular airbags communicating with the corresponding connecting holes are uniformly fixed on the periphery of the air guide pipes; one end of each air guide pipe is sealed, and the other end is screwed to a corresponding screw connector on the conveying pipe; guide grooves are uniformly and symmetrically opened on the inner wall of the sewage treatment tank; a connecting rod is slidably arranged on the inner wall of the guide groove; a stop roller is fixed between two opposite connecting rods; a connector is fixed to the end of the connecting rod; a plurality of square columns are uniformly fixed on the side of the sewage treatment tank; a sliding sleeve is slidably arranged on the square column; a plug-in seat that engages with the connector is fixed to the end of the sliding sleeve; a tension spring sleeved on the square column is fixedly connected between the sewage treatment tank and the corresponding sliding sleeve.

[0013] The advantages of this utility model are:

[0014] 1. This utility model achieves multi-stage purification of wastewater by linearly connecting multiple sets of biofilm treatment units between two support plates, thereby improving the wastewater treatment effect, facilitating the rapid assembly and disassembly of the biofilm treatment units, and improving the efficiency of wastewater treatment.

[0015] 2. This utility model uses a zipper structure to install the hydrophilic strip-shaped biofilm between adjacent rubber strips. As the rubber strips are wound / released, the hydrophilic strip-shaped biofilm is wound / released synchronously, which facilitates the transportation and rapid recycling of the hydrophilic strip-shaped biofilm and further improves the efficiency of sewage treatment.

[0016] 3. During the winding process, the hydrophilic strip biofilm of this invention passes between the inflated annular air bladder and the baffle roller, where the water is squeezed out, reducing the weight of the biofilm. At the same time, the wound sheet biofilm is spiral-shaped, separated from each other and not adhering. By introducing air into the spiral cavity formed after winding, the sheet biofilm is air-dried, further improving the drying effect of the sheet biofilm and facilitating its recycling and subsequent processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a wastewater treatment system for environmental engineering according to the present invention.

[0018] Figure 2 For the present utility model Figure 1 Enlarged view of region A.

[0019] Figure 3 For the present utility model Figure 1 A structural diagram from another angle.

[0020] Figure 4 For the present utility model Figure 1 A schematic diagram of the partial structure from the left-hand view.

[0021] Figure 5 This is a schematic diagram of the structure of the sewage treatment tank of this utility model.

[0022] Figure 6 For the present utility model Figure 5 Enlarged view of region C.

[0023] Figure 7 For the present utility model Figure 5 A structural diagram from a top-down perspective.

[0024] Figure 8 For the present utility model Figure 7 Enlarged view of region D.

[0025] Figure 9 This is a schematic diagram of the biofilm treatment unit of this utility model.

[0026] Figure 10 For the present utility model Figure 9 A structural diagram from an upward-looking perspective.

[0027] Figure 11 For the present utility model Figure 10 Enlarged view of region B.

[0028] Figure 12 This is a partial structural diagram of the rubber belt of this utility model.

[0029] Figure 13 This is a partial structural diagram of the hydrophilic strip-shaped biofilm of this utility model.

[0030] Figure 14 This is a schematic diagram of the structure of the winding rack of this utility model.

[0031] Figure 15 For the present utility model Figure 14 A structural diagram from a frontal viewpoint.

[0032] Figure 16 This is a schematic diagram of the structure of the abutment of this utility model.

[0033] In the diagram: 1. Wastewater treatment tank; 2. Biofilm treatment section; 3. Winding frame; 4. Winding roller; 5. Rubber belt; 6. Clip groove; 7. Rubber strip; 8. Hydrophilic strip-shaped biofilm; 9. Exhaust pipe; 10. Counterweight lifting plate; 11. Internal threaded sleeve; 12. Baffle; 13. External threaded sleeve; 14. Guide hole; 15. Push rod; 16. First fabric belt; 17. First chain tooth assembly; 18. Second fabric belt; 19. Second chain tooth assembly; 20. Pull head; 21. Stop head; 22. Rotating shaft; 23. Connecting pipe; 24. Baffle plate; 25. Ear plate; 26. Vertical plate; 27. Servo motor; 28. Vent hole; 29. Vertical guide plate; 30. Inclined guide plate; 31. Support plate; 32. Slide groove; 33. T-shaped plate; 34. Insert rod; 35. Return spring; 36. Ball head; 37. Air supply pipe; 38. Air inlet pipe; 39. Compressed air pump; 40. Delivery pipe; 41. First branch pipe; 42. Second branch pipe; 43. Air plate; 44. Ear tube; 45. Controller; 46. Air guide pipe; 47. Annular airbag; 48. Guide groove; 49. Connecting rod; 50. Baffle roller; 51. Connector; 52. Square column; 53. Sliding sleeve; 54. Insertion seat; 55. Tension spring; 56. Sewage inlet pipe; 57. Insertion hole; 58. Stud. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0036] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0037] Example 1, please refer to Figure 1-16 The present invention provides the following technical solution:

[0038] A wastewater treatment system for environmental engineering, specifically, includes a wastewater treatment tank 1; a plurality of biofilm treatment sections 2 are uniformly snapped onto the top of the wastewater treatment tank 1; the biofilm treatment section 2 includes a winding frame 3; the winding frame 3 includes a winding roller 4; a plurality of rubber strips 5 are uniformly wound around the periphery of the winding roller 4 along its axial direction; the surface of the rubber strips 5 is provided with snap-fit ​​grooves 6, and a rubber strip 7 adapted to the snap-fit ​​grooves 6 is fixed on its back; a hydrophilic strip-shaped biofilm 8 is adapted to connect two adjacent rubber strips 5.

[0039] The rubber strip 7 has a hollow structure and an exhaust pipe 9 is fixed at its bottom; a one-way valve is installed on the exhaust pipe 9; a counterweight lifting plate 10 is fixed between each exhaust pipe 9; and internally threaded sleeves 11 are symmetrically fixed on the surface of the counterweight lifting plate 10.

[0040] Several baffles 12 are evenly fixed on the top of the sewage treatment tank 1; external threaded sleeves 13 are symmetrically fixed on the surface of the baffles 12; a guide hole 14 is opened on the bottom surface of the external threaded sleeve 13; a push rod 15 is slidably arranged in the guide hole 14; a stud 58 that is screwed to the internal threaded sleeve 11 is fixed at the bottom of the push rod 15; the push rod 15 and the guide hole 14 are slidably engaged; a nut is screwed to the top of the external threaded sleeve 13.

[0041] Working principle of this embodiment:

[0042] By installing the hydrophilic strip biofilm 8 between two adjacent rubber belts 5 and controlling the rotation of the winding roller 4, the rubber belts 5 are wound up. During this process, the rubber strip 7 is engaged in the engagement groove 6, which in turn drives the hydrophilic strip biofilm 8 to be wound up. After the winding is completed, the rubber belt 5 and the hydrophilic strip biofilm 8 form a spiral cavity, reducing the footprint of the hydrophilic strip biofilm 8 and facilitating the transfer of the biofilm treatment unit 2.

[0043] The biofilm treatment units 2 in their coiled states are sequentially and linearly snapped onto the top of the wastewater treatment tank 1 to achieve multi-stage purification of wastewater and improve the wastewater treatment effect. By placing the counterweight lifting plate 10 inside the wastewater treatment tank 1 and screwing the stud 58 at the bottom of the push rod 15 into the internal threaded sleeve 11, the winding roller 4 is controlled to rotate in the opposite direction to release the hydrophilic strip biofilm 8. Under the guidance of the push rod 15, the hydrophilic strip biofilm 8 is flattened and unfolded. When the counterweight lifting plate 10 abuts against the bottom surface of the wastewater treatment tank 1, the top of the push rod 15 is retracted into the external threaded sleeve 13, and the nut is tightened to prevent the push rod 15 from moving up and down along the guide hole 14. This facilitates the rapid assembly and disassembly of the biofilm treatment unit 2 and improves the efficiency of wastewater treatment.

[0044] Example 2, please refer to Figure 1-16This second embodiment is an improvement on the first embodiment as follows: Specifically, a first cloth strip 16 is fixed to the back of the rubber strip 5; a first chain tooth group 17 is provided on the first cloth strip 16; a second cloth strip 18 is symmetrically fixed to the side of the hydrophilic strip-shaped biofilm 8; a second chain tooth group 19 is provided on the second cloth strip 18; a pull head 20 is engaged between the first chain tooth group 17 and the adjacent second chain tooth group 19; and a stop head 21 is provided at both ends of the first cloth strip 16.

[0045] The zipper structure consists of the first fabric strip 16, the first chain tooth group 17, the second fabric strip 18, the second chain tooth group 19, the zipper pull 20, and the stop head 21.

[0046] The take-up roller 4 has a rotating shaft 22 and a connecting pipe 23 fixed at both ends respectively; the take-up frame 3 also includes two sets of baffles 24 that are respectively rotatably connected to the rotating shaft 22 and the connecting pipe 23; ear plates 25 are fixed on the side of the baffles 24; a vertical plate 26 is fixed on the surface of one ear plate 25; a servo motor 27 is fixed on the side of the vertical plate 26; the output end of the servo motor 27 is fixedly connected to one end of the rotating shaft 22.

[0047] By controlling the start servo motor 27 to drive the rotating shaft 22 to rotate forward / reverse, the winding / unwinding of the take-up roller 4 can be achieved.

[0048] A vertical guide plate 29 is fixed to the side of the ear plate 25; an inclined guide plate 30 is fixed to the bottom of the vertical guide plate 29; several support plates 31 are symmetrically fixed to the top of the sewage treatment tank 1; several sliding grooves 32 are symmetrically opened on the top of the sewage treatment tank 1; a T-shaped plate 33 is slidably arranged inside the sliding groove 32; several insertion rods 34 are evenly fixed to the side of the T-shaped plate 33; the insertion rods 34 slide through the support plates 31; a return spring 35 is fixed between the T-shaped plate 33 and the support plates 31 and sleeved on the corresponding insertion rod 34; a ball head 36 is fixed to the end of the insertion rod 34; and insertion holes 57 that are evenly opened on the side of the vertical guide plate 29 to engage with the corresponding insertion rods 34.

[0049] Working principle of this embodiment two:

[0050] The two vertical guide plates 29 on the biofilm treatment section 2, in their coiled state, are gradually lowered along the two opposing support plates 31. Initially, the return spring 35 is in its normal state, and the insertion rod 34 penetrates the support plate 31. As the inclined guide plate 30 descends, it gradually squeezes the ball head 36, causing the insertion rod 34 to slide away from the support plate 31. The return spring 35 is stretched until the insertion rod 34 is retracted into the support plate 31. As the vertical guide plate 29 continues to descend, the elastic return force of the return spring 35 causes the ball head 36 at the end of the insertion rod 34 to press against the support plate 31. On the side of the vertical guide plate 29, when the insertion hole 57 slides to be coaxial with the corresponding insertion rod 34, under the elastic force of the return spring 35, the insertion rod 34 is driven to insert into the corresponding insertion hole 57, completing the quick installation of the biofilm treatment unit 2 and the support plate 31; when the biofilm treatment unit 2 needs to be replaced, simply pull the T-shaped plate 33 away from the support plate 31, driving each set of insertion rods 34 to push out of the corresponding insertion hole 57, releasing the fixed limit on the biofilm treatment unit 2, thus completing the quick disassembly and replacement of the biofilm treatment unit 2, improving work efficiency.

[0051] Example 3, please refer to Figure 1-16 This embodiment three is an improvement on the first embodiment as follows: Specifically, the rubber strip 7 and the hydrophilic strip-shaped biofilm 8 in the wound state form several sets of spiral cavities; the inside of the winding roller 4 is a hollow structure, and several vent holes 28 are evenly opened on its peripheral side; a discharge port is opened on the outer peripheral side of the winding roller 4; a sealing cover is fixedly installed on the discharge port by fastening bolts; a sewage inlet pipe 56 is connected to the side of the sewage treatment tank 1 near its top, and a discharge pipe is connected to the other opposite side near its bottom.

[0052] The design of the discharge port and sealing cap facilitates cleaning of the inside of the take-up roller 4.

[0053] An air supply pipe 37 is connected between adjacent rubber strips 7; an air inlet pipe 38 is fixedly connected to the air supply pipe 37 through the side of the baffle 24; a compressed air pump 39 is fixedly installed on the side of the sewage treatment tank 1; a delivery pipe 40 is fixedly installed at the output end of the compressed air pump 39; a first branch pipe 41 and a second branch pipe 42 are sequentially connected to the side of the delivery pipe 40; an air plate 43 is connected to the end of the first branch pipe 41, the second branch pipe 42 and the delivery pipe 40; several ear tubes 44 are evenly connected to the side of the air plate 43.

[0054] Each ear tube 44 has a threaded connector at its end via a flexible tube; the air inlet pipe 38 is threaded to the corresponding threaded connector on the first branch pipe 41; the connecting pipe 23 is threaded to the corresponding threaded connector on the second branch pipe 42; the delivery pipe 40 is equipped with a solenoid valve near its end and on the first branch pipe 41 and the second branch pipe 42; a controller 45 is installed on the side of the sewage treatment tank 1; the output of the controller 45 is electrically connected to the servo motor 27, the solenoid valve, and the compressed air pump 39, respectively.

[0055] Working principle of this embodiment three:

[0056] By controlling the opening of the solenoid valve on the first branch pipe 41, the compressed air pump 39 is started, and compressed air is introduced into the hollow rubber strip 7 through the first branch pipe 41, the air inlet pipe 38 and the air outlet pipe 37, and discharged into the wastewater through the corresponding exhaust pipe 9, thereby achieving aeration treatment of the wastewater, increasing the oxygen content of the wastewater, and thus improving the treatment effect of sewage; by setting a one-way valve on the exhaust pipe 9, the wastewater cannot flow back into the rubber strip 7.

[0057] By controlling the opening of the solenoid valve on the second branch pipe 42 and simultaneously controlling the start of the compressed air pump 39, compressed air is introduced into the inside of the winding roller 4 through the second branch pipe 42 and the connecting pipe 23, and then enters the corresponding spiral cavity through the vent hole 28 to air dry the wound hydrophilic strip biofilm 8, thereby improving the dehydration efficiency of the hydrophilic strip biofilm 8 and facilitating its winding, recycling, and subsequent processing.

[0058] Before starting the compressed air pump 39 in the above process, ensure that the servo motor 27 is in the off state, and then screw the corresponding screw connectors to the solenoid valves on the corresponding air inlet pipe 38, connecting pipe 23 and delivery pipe 40.

[0059] Example 4, please refer to Figure 1-16 This fourth embodiment is an improvement on the first embodiment as follows: Specifically, several air guide pipes 46 are uniformly fixed between the inner walls of the sewage treatment tank 1; several connecting holes are uniformly opened on the periphery of the air guide pipes 46; several annular air bags 47 that communicate with the corresponding connecting holes are uniformly fixed on the periphery of the air guide pipes 46; one end of each air guide pipe 46 is sealed, and the other end is screwed to the corresponding screw joint on the conveying pipe 40.

[0060] The inner wall of the sewage treatment tank 1 is symmetrically provided with guide grooves 48; a connecting rod 49 is slidably provided on the inner wall of the guide groove 48; a stop roller 50 is fixed between two opposite connecting rods 49; a connector 51 is fixed at the end of the connecting rod 49; several square columns 52 are uniformly fixed on the side of the sewage treatment tank 1; a sliding sleeve 53 is slidably provided on the square column 52; a plug-in seat 54 that is inserted and mated with the connector 51 is fixed at the end of the sliding sleeve 53; a tension spring 55 sleeved on the square column 52 is fixedly connected between the sewage treatment tank 1 and the corresponding sliding sleeve 53.

[0061] Working principle of Example 4:

[0062] Before the biofilm treatment unit 2 is installed, the baffle roller 50 is away from the air guide pipe 46. After the biofilm treatment unit 2 is installed, the hydrophilic strip biofilm 8 is released, so that the hydrophilic strip biofilm 8 passes through the baffle roller 50 and the air guide pipe 46. Then the stud 58 at the bottom of the push rod 15 is screwed into the internal thread sleeve 11 until the top of the push rod 15 is inserted into the external thread sleeve 13 and the nut is tightened.

[0063] When it is necessary to recycle the hydrophilic strip biofilm 8, pull the stop roller 50 to move it into contact with one side of the hydrophilic strip biofilm 8, and pull the sliding sleeve 53 away from the sewage treatment tank 1. The tension spring 55 is stretched. When the connector 51 and the plug seat 54 are coaxially set, release the sliding sleeve 53. Under the elastic restoring force of the tension spring 55, the plug seat 54 is driven to insert into the connector 51, completing the limit of the stop roller 50. At this time, control to open the solenoid valve at the end of the conveying pipe 40, and at the same time start the compressed air pump 39. Compressed air passes through the conveying pipe 40, the air guide pipe 46 and the connecting hole, so that the annular air bag 47 is inflated and expanded, pressing the corresponding hydrophilic strip biofilm 8 onto the stop roller 50. As the winding roller 4 winds up the hydrophilic strip biofilm 8, most of the water inside the hydrophilic strip biofilm 8 is squeezed out, reducing the weight of the hydrophilic strip biofilm 8, which is convenient for winding, recycling and subsequent treatment.

[0064] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0065] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0066] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0067] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0068] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A wastewater treatment system for environmental engineering, comprising a wastewater treatment tank (1); characterized in that: The top of the sewage treatment tank (1) is uniformly fitted with several biofilm treatment units (2); The biofilm treatment unit (2) includes a winding frame (3); the winding frame (3) includes a winding roller (4); a plurality of rubber strips (5) are evenly wound around the circumferential side of the winding roller (4) along its axial direction; the surface of the rubber strips (5) is provided with a snap-fit ​​groove (6), and a rubber strip (7) adapted to the snap-fit ​​groove (6) is fixed on its back; a hydrophilic strip-shaped biofilm (8) is adapted to connect two adjacent rubber strips (5); The rubber strip (7) is hollow and has an exhaust pipe (9) fixed at its bottom; a one-way valve is provided on the exhaust pipe (9); a counterweight lifting plate (10) is fixed between each of the exhaust pipes (9); and internal threaded sleeves (11) are symmetrically fixed on the surface of the counterweight lifting plate (10). The top of the sewage treatment tank (1) is uniformly fixed with several baffles (12); the surface of the baffles (12) is symmetrically fixed with external threaded sleeves (13); the bottom surface of the external threaded sleeve (13) is provided with a guide hole (14); a push rod (15) is slidably arranged in the guide hole (14); a stud (58) that is screwed to the bottom of the push rod (15) is fixed to the internal threaded sleeve (11); the push rod (15) is slidably engaged with the guide hole (14); a nut is screwed to the top of the external threaded sleeve (13).

2. The wastewater treatment system for environmental engineering according to claim 1, characterized in that: The rubber strip (5) has a first cloth strip (16) fixed to its back; the first cloth strip (16) has a first chain tooth group (17); the hydrophilic strip biofilm (8) has a second cloth strip (18) symmetrically fixed to its side; the second cloth strip (18) has a second chain tooth group (19); the first chain tooth group (17) and the adjacent second chain tooth group (19) are meshed with a pull head (20); the first cloth strip (16) has a stop head (21) at both ends.

3. The wastewater treatment system for environmental engineering according to claim 2, characterized in that: The take-up roller (4) is fixed with a rotating shaft (22) and a connecting pipe (23) at both ends respectively; the take-up frame (3) also includes two sets of baffles (24) that are respectively connected to the rotating shaft (22) and the connecting pipe (23) for rotational cooperation; the baffles (24) are fixed with ear plates (25) on the side; a vertical plate (26) is fixed on the surface of the ear plate (25); a servo motor (27) is fixed on the side of the vertical plate (26); the output end of the servo motor (27) is fixedly connected to one end of the rotating shaft (22).

4. The wastewater treatment system for environmental engineering according to claim 3, characterized in that: The rubber strip (7) and the hydrophilic strip-shaped biofilm (8) in the winding state form several sets of spiral cavities; the winding roller (4) has a hollow structure inside and several air holes (28) are evenly opened on its peripheral side; the winding roller (4) has a discharge port on its outer peripheral side; a sealing cover is fixedly installed on the discharge port by fastening bolts; a sewage inlet pipe (56) is connected to the side of the sewage treatment tank (1) near its top, and a discharge pipe is connected to the other opposite side near its bottom.

5. A wastewater treatment system for environmental engineering according to claim 4, characterized in that: A vertical guide plate (29) is fixed to the side of the ear plate (25); an inclined guide plate (30) is fixed to the bottom of the vertical guide plate (29); several support plates (31) are symmetrically fixed to the top of the sewage treatment tank (1); several sliding grooves (32) are symmetrically opened on the top of the sewage treatment tank (1); a T-shaped plate (33) is slidably arranged inside the sliding groove (32); several insert rods (34) are evenly fixed to the side of the T-shaped plate (33); the insert rods (34) slide through the support plate (31); a return spring (35) is fixed between the T-shaped plate (33) and the support plate (31) and sleeved on the corresponding insert rod (34); a ball head (36) is fixed to the end of the insert rod (34); and insertion holes (57) that are evenly opened on the side of the vertical guide plate (29) to engage with the corresponding insert rods (34).

6. A wastewater treatment system for environmental engineering according to claim 5, characterized in that: An air supply pipe (37) is connected between adjacent rubber strips (7); an air inlet pipe (38) is fixedly connected to the air supply pipe (37) through the side of the baffle (24); a compressed air pump (39) is fixedly installed on the side of the sewage treatment tank (1); a delivery pipe (40) is fixedly installed at the output end of the compressed air pump (39); a first branch pipe (41) and a second branch pipe (42) are sequentially connected to the periphery of the delivery pipe (40); an air plate (43) is connected to the end of the first branch pipe (41), the second branch pipe (42) and the delivery pipe (40); a number of ear tubes (44) are evenly connected to the side of the air plate (43).

7. A wastewater treatment system for environmental engineering according to claim 6, characterized in that: Each of the ear tubes (44) has a screw connector connected to its end via a flexible tube; the air inlet pipe (38) is screwed to the corresponding screw connector on the first branch pipe (41); the connecting pipe (23) is screwed to the corresponding screw connector on the second branch pipe (42); the delivery pipe (40) is equipped with a solenoid valve near its end and on the first branch pipe (41) and the second branch pipe (42); a controller (45) is installed on the side of the sewage treatment tank (1); the output end of the controller (45) is electrically connected to the servo motor (27), the solenoid valve and the compressed air pump (39) respectively.

8. A wastewater treatment system for environmental engineering according to claim 7, characterized in that: A number of air guide pipes (46) are evenly fixed between the inner walls of the sewage treatment tank (1); a number of connecting holes are evenly opened on the periphery of the air guide pipes (46); a number of annular air bags (47) that communicate with the corresponding connecting holes are evenly fixed on the periphery of the air guide pipes (46); one end of each air guide pipe (46) is sealed, and the other end is screwed to the corresponding screw joint on the conveying pipe (40). The wastewater treatment tank (1) has guide grooves (48) evenly and symmetrically arranged on its inner wall; a connecting rod (49) is slidably arranged on the inner wall of the guide groove (48); a stop roller (50) is fixed between two opposite connecting rods (49); a connector (51) is fixed at the end of the connecting rod (49); several square columns (52) are evenly fixed on the side of the wastewater treatment tank (1); a sliding sleeve (53) is slidably arranged on the square column (52); a plug-in seat (54) is fixed at the end of the sliding sleeve (53) to engage with the connector (51); a tension spring (55) sleeved on the square column (52) is fixedly connected between the wastewater treatment tank (1) and the corresponding sliding sleeve (53).

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