Box type biological sewage treatment device

Abstract

The invention relates to the technical field of sewage treatment, in particular to a box type biological sewage treatment device which comprises a biological treatment box, a conveying pump is arranged in the biological treatment box, and the conveying pump conveys sewage from a front groove into a rear groove; the feeding box is used for placing functional bacteria to be fed and some nutritional agents; the proportioning assembly is used for feeding the materials placed in the feeding box according to the proportion, and the conveying amount of the materials is determined by the sewage output amount of the output pipeline; the mixing assembly is used for rotating, stirring and mixing the materials proportioned and fallen by the proportioning assembly, the flowing kinetic energy of the sewage is converted into the driving force of the rotating disc through the inner driving assembly, so that the adding amount of the functional bacteria and the nutritional agent is automatically in direct proportion to the output amount of the sewage, and accurate proportioning can be realized without an extra power source; materials are primarily mixed by the conveying wheel, secondarily mixed by the material guide blade and thrice mixed by the stirring roller in the biological treatment tank, so that the problem of non-uniform mixing of the materials is effectively avoided, and the contact reaction efficiency of microorganisms and sewage is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a box-type biological wastewater treatment device. Background Technology

[0002] Biological wastewater treatment is an environmental protection technology that uses the metabolism of microorganisms to convert organic pollutants in wastewater into harmless substances. This technology involves adding specific functional bacteria and nutrients to an aerobic or anaerobic environment to allow microorganisms to form activated sludge or biofilm, thereby degrading pollutants such as COD and ammonia nitrogen in wastewater. It is widely used in municipal and industrial wastewater treatment.

[0003] Currently, the introduction of biological inoculants mainly adopts manual periodic addition or timed and quantitative delivery by electric metering pumps. Although some existing devices can achieve mechanical feeding, they require independent motor drive, and the feeding rate is preset to a fixed value, which cannot be automatically adjusted according to changes in actual sewage flow. The mixing of materials and sewage mostly relies on a single stirring device, and the mixing process is simple and lacks a multi-stage enhanced mixing mechanism. The ratio adjustment of inoculants and nutrients can only be achieved by stopping the machine and disassembling the equipment, which is cumbersome and slow to respond.

[0004] The above-mentioned dosing methods have obvious defects: fixed-rate dosing leads to mismatch in reagent dosage when sewage flow changes abruptly, resulting in waste of bacteria or decreased treatment efficiency; single mixing method results in insufficient mixing of materials and sewage, and functional bacteria cannot be evenly distributed in the reaction zone, affecting the biochemical reaction effect; additional power source increases equipment energy consumption and failure points; inflexible ratio adjustment makes it difficult to adapt to water quality fluctuations. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problem that the introduction of biological strains requires manual operation, the present invention is proposed.

[0007] Therefore, the purpose of this invention is to provide a box-type biological wastewater treatment device.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a box-type biological wastewater treatment device, comprising, The biological treatment tank is equipped with a pre-sedimentation tank and a post-biological treatment tank. The biological treatment tank is also equipped with a transfer pump that transfers wastewater from the pre-sedimentation tank to the post-biological treatment tank. Feeding box, used to hold functional bacteria to be added and some nutrients; The proportioning component connects the feeding box to the output pipe of the conveying pump, and feeds the materials placed in the feeding box according to the proportion. The material conveying volume is determined by the sewage output volume of the output pipe. The mixing component rotates and stirs the materials falling from the proportioning component, and then re-inputs the mixed materials into the output pipe of the delivery pump for secondary mixing through the flow of water. The delivery pump pipe is equipped with a Venturi jet structure, which works in conjunction with the mixing component to ensure that the materials enter the output pipe.

[0009] As a preferred embodiment of the box-type biological wastewater treatment device of the present invention, a drive motor is mounted above the biological treatment tank, the drive motor is connected to a stirring roller, and the stirring roller is placed inside the biological treatment tank to maintain a uniform mixing state inside the biological treatment tank.

[0010] As a preferred embodiment of the box-type biological wastewater treatment device of the present invention, the feeding box is provided with a distribution trough, and a discharge port is provided below the distribution trough, through which the material in the distribution trough enters the wastewater.

[0011] As a preferred embodiment of the box-type biological wastewater treatment device of the present invention, the proportioning component includes an internal drive component disposed on the inner wall of the output pipe of the delivery pump, a rotating disk disposed in the biological treatment tank, a discharge trough being provided on the rotating disk, and a transmission component connecting the internal drive component and the rotating disk. The rotating disc is located inside the material inlet. The internal drive component is driven by the water flow in the pipe, which drives the rotating disc to rotate through the transmission component, so that the material above the rotating disc is transferred to the bottom of the rotating disc through rotation.

[0012] As a preferred embodiment of the box-type biological wastewater treatment device of the present invention, the internal drive component includes an annular rotating blade installed in the output pipe of the delivery pump, and the outer ring of the annular rotating blade is provided with toothed grooves. When water flows over the annular rotating blades, the blades are driven to rotate by the flowing water.

[0013] In a preferred embodiment of the box-type biological wastewater treatment device of the present invention, the transmission component includes a gear meshing with a toothed groove, a transmission wheel is installed at the end of the gear, a driven wheel is installed on the inner wall of the feeding box, the driven wheel is fixedly connected to the rotating disk through a connecting rod, and the driven wheel is connected to the transmission wheel through a belt drive.

[0014] As a preferred embodiment of the box-type biological wastewater treatment device of the present invention, the mixing component includes a conveying pipe installed below the discharge port. The inner wall of the conveying pipe is connected to a conveying wheel via a bearing. The top of the conveying wheel is provided with a sliding inclined surface. A drop groove is opened in the middle section of the sliding inclined surface. One side of the conveying wheel has an opening for connecting the conveying wheel to the mixing roller shaft via a transmission belt. A guide blade is installed at the bottom of the conveying wheel and is located below the drop groove.

[0015] As a preferred embodiment of the box-type biological wastewater treatment device of the present invention, the feeding box is provided with an adjustment component. The adjustment component can adjust the two sets of rotating discs separately. By changing the volume of the feeding trough, the rotation of the rotating discs is used to complete the material proportioning.

[0016] As a preferred embodiment of the box-type biological wastewater treatment device of the present invention, the adjusting component includes a threaded rod installed in the feeding box, an adjusting knob installed at one end of the threaded rod, the threaded rod and the connecting rod body are on the same axis, a pressing rod is provided through the connecting rod body, the pressing rod extends from one side of the threaded rod to the interior of the rotating disk, and a spring return element is provided between the pressing rod and the feeding box.

[0017] As a preferred embodiment of the box-type biological wastewater treatment device of the present invention, wherein: a pressing block is installed at one end of the pressing rod, a supporting spring is installed on the inner wall of the discharge trough, a protruding block is installed at the end of the supporting spring, a moving rod is installed on the outer wall of the protruding block, and one end of the moving rod extends to one side of the pressing block. The support spring applies a contraction force to the protruding block, ensuring that the moving rod is always in contact with the inclined surface of the pressing block. The movement of the pressing block causes the protruding block to protrude within the discharge trough.

[0018] The technical solution provided by this invention has the following advantages compared with the known prior art: I. This invention converts the kinetic energy of sewage flow into the driving force of a rotating disc through an internal drive component, so that the dosage of functional bacteria and nutrients is automatically proportional to the sewage output. Precise proportioning can be achieved without an additional power source. The materials are initially mixed by the conveyor wheel, then mixed a second time by the guide blades, and finally mixed a third time by the stirring roller in the biological treatment tank. This effectively avoids the problem of uneven material mixing and significantly improves the contact reaction efficiency between microorganisms and sewage. Second, it has flexible adjustment capabilities and integrated advantages. The adjustment components can independently control the volume of the feeding tank of the two sets of rotating discs, which makes it easy to adjust the bacterial ratio in real time according to changes in water quality. The pre-sedimentation tank and the post-biological treatment tank are integrated into a box structure. With the integrated design of feeding, ratioing and mixing components, the device has a compact structure and small footprint, while reducing equipment costs and operation and maintenance complexity. It is suitable for a variety of sewage treatment scenarios. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a box-type biological wastewater treatment device.

[0021] Figure 2 This is a schematic diagram of the feeding box of a box-type biological wastewater treatment device.

[0022] Figure 3 This is a partially enlarged schematic diagram of the treatment tank of a box-type biological wastewater treatment device.

[0023] Figure 4 This is a partially enlarged schematic diagram of the feeding box of a box-type biological wastewater treatment device.

[0024] Figure 5 for Figure 2 Enlarged view of point A in the image.

[0025] Figure 6 This is a cross-sectional schematic diagram of the rotating disc of a box-type biological wastewater treatment device.

[0026] Reference numerals: 1. Biological treatment tank; 11. Biological treatment vessel; 12. Transfer pump; 121. Venturi jet structure; 13. Drive motor; 14. Agitator roller; 2. Feeding box; 21. Distributor trough; 22. Discharge port; 3. Proportioning component; 31. Internal drive component; 311. Annular rotating blade; 312. Gear; 32. Transmission component; 321. Gear; 322. Drive wheel; 323. Belt; 32 4. Driven wheel; 325. Connecting rod; 33. Rotary disk; 34. Discharge chute; 4. Mixing assembly; 41. Feed pipe; 42. Guide blade; 43. Conveyor wheel; 44. Sliding inclined plane; 45. Drop chute; 5. Adjusting assembly; 51. Adjusting knob; 52. Threaded rod; 53. Contact rod; 531. Spring return element; 54. Contact inclined block; 55. Support spring; 56. Protrusion; 57. Moving rod. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0031] Reference Figure 1 - Figure 6 This is one embodiment of the present invention, which provides a box-type biological wastewater treatment device, including a biological treatment tank 1. The biological treatment tank 1 is provided with a pre-sedimentation tank and a post-biological treatment tank 11. The pre-sedimentation tank is used to remove most of the impurities. The biological treatment tank 1 is provided with a transfer pump 12, which transfers wastewater from the pre-sedimentation tank to the post-sedimentation tank. A drive motor 13 is mounted above the biological treatment tank 11. The drive motor 13 is connected to a stirring roller 14, which is placed inside the biological treatment tank 11 to maintain a uniform mixing state inside the biological treatment tank 11.

[0032] Specifically, the feeding box 2 is used to place the functional bacteria to be added and some nutrients; the proportioning component 3 connects the feeding box 2 to the output pipe of the conveying pump 12, and adds the materials placed in the feeding box 2 according to the proportion, and the material conveying volume is determined by the sewage output volume of the output pipe. The feeding box 2 has a distribution trough 21, and a discharge port 22 is provided below the distribution trough 21. The materials in the distribution trough 21 enter the sewage through the discharge port 22.

[0033] Furthermore, the proportioning component 3 includes an internal drive component 31 installed on the inner wall of the output pipe of the conveying pump 12. The internal drive component 31 eliminates the need for an additional power source for the proportioning component 3 and uses the flow of sewage as the power source, making the feeding speed of the proportioning component 3 proportional to the sewage output speed, which facilitates automatic feeding of materials. A rotating disk 33 is installed in the biological treatment tank 1. The rotating disk 33 has a discharge trough 34 and a transmission component 32 connecting the internal drive component 31 and the rotating disk 33. The transmission component 32 transmits the driving force of the water flow to one side of the rotating disk 33, thereby driving the rotating disk 33 to perform material conveying and proportioning.

[0034] Furthermore, the internal drive assembly 31 includes an annular rotating blade 311 installed in the output pipe of the delivery pump 12. The outer ring of the annular rotating blade 311 is provided with a toothed groove 312. When water flows through the annular rotating blade 311, the annular rotating blade 311 is driven to rotate by the flowing water. The annular rotating blade 311 and the inner wall of the output pipe have a mechanical sealing structure, such as a sealed bearing, so that the opening of the annular rotating blade 311 exposed at the top of the output pipe will not leak, and the transmission of the annular rotating blade 311 will not affect the normal flow of sewage in the output pipe.

[0035] Furthermore, the transmission component 32 includes a gear 321 that meshes with the tooth groove 312, a transmission wheel 322 is installed at the end of the gear 321, a driven wheel 324 is installed on the inner wall of the feeding box 2, the driven wheel 324 is fixedly connected to the rotating disk 33 through a connecting rod 325, and the driven wheel 324 and the transmission wheel 322 are connected by a belt 323. During wastewater treatment, the pump 12 pumps wastewater from the pre-treatment tank into the biological treatment tank 11. During the transportation process, the water flow in the pipe drives the annular rotating blade 311 to rotate. The rotation of the annular rotating blade 311 drives the gear 321 to rotate. The rotation of the gear 321 drives the transmission wheel 322 to rotate. The rotation of the transmission wheel 322 drives the driven wheel 324 to rotate. The rotation of the driven wheel 324 drives the connecting rod 325 to rotate. The rotation of the connecting rod 325 drives the rotating disk 33 to rotate. The material above the rotating disk 33 rotates into the conveying wheel 43 through the discharge chute 34. The two sets of rotating disks 33 rotate at the same speed according to the different volumes of the discharge chute 34, so as to make the material ratio.

[0036] Furthermore, the mixing component 4 rotates and stirs the materials falling from the proportioning component 3, and then re-inputs the mixed materials into the output pipe of the conveying pump 12 for secondary mixing through the flow of water.

[0037] Furthermore, the mixing component 4 includes a conveying pipe 41 installed below the discharge port 22. The inner wall of the conveying pipe 41 is connected to a conveying wheel 43 via a bearing. The top of the conveying wheel 43 is provided with a sliding inclined surface 44. A drop groove 45 is opened in the middle section of the sliding inclined surface 44. One side of the conveying wheel 43 has an opening for connecting the conveying wheel 43 to the shaft of the stirring roller 14 via a transmission belt. A guide vane 42 is installed at the bottom of the conveying wheel 43. The guide vane 42 is located below the drop groove 45. The pipeline of the conveying pump 12 is provided with a Venturi jet structure 121, and this structure cooperates with the mixing component 4 to ensure that the material enters the output pipeline. The Venturi negative pressure reaction zone is located on one side of the guide vane 42, so that the material can enter the output pipeline normally.

[0038] Furthermore, the feeding box 2 is equipped with an adjustment component 5, which can adjust the two sets of rotating disks 33 separately. By changing the volume of the feeding trough 34, the rotation of the rotating disks 33 is used to complete the material proportioning. When the drive motor 13 drives the stirring roller 14 to rotate in the biological treatment tank 11 to maintain a mixing state, the stirring roller 14 synchronously drives the conveyor wheel 43 to rotate through the transmission belt. The rotation of the conveyor wheel 43 drives the guide blade 42 to rotate, so that the material entering through the drop trough 45 above the conveyor wheel 43 is conveyed downward through the guide blade 42 and the initial mixing is completed during the conveying process. Then, the guide blade 42 conveys the material to the sewage output pipe, where the secondary mixing is completed by the impact of water flow. Finally, the sewage enters the biological treatment tank 11, where the stirring roller 14 performs a third mixing. This three-stage mixing effectively avoids uneven mixing of materials.

[0039] Furthermore, the adjusting component 5 includes a threaded rod 52 installed in the feeding box 2. The rotating movement of the threaded rod 52 compresses the pressing rod 53. An adjusting knob 51 is installed at one end of the threaded rod 52. The threaded rod 52 and the connecting rod body 325 are on the same axis. The pressing rod 53 is inserted through the connecting rod body 325. The outer wall of the pressing rod 53 does not contact the through cavity inside the connecting rod body 325. The pressing rod 53 is supported by the contact surface of the feeding box 2, so that when the threaded rod 52 rotates, only the threaded rod 52 moves to compress the pressing rod 53. At this time, the movement of the pressing rod 53 does not interfere with the rotation state of the connecting rod body 325. The pressing rod 53 extends from one side of the threaded rod 52 into the interior of the rotating disk 33. A spring return element 531 is provided between the pressing rod 53 and the feeding box 2.

[0040] Furthermore, a pressing wedge 54 is installed at one end of the pressing rod 53, with the inclined surface of the pressing wedge 54 facing the moving rod 57. A support spring 55 is installed on the inner wall of the discharge trough 34, and a protrusion 56 is installed at the end of the support spring 55. A moving rod 57 is installed on the outer wall of the protrusion 56, with one end of the moving rod 57 extending to one side of the pressing wedge 54. The support spring 55 applies a contraction force to the protrusion 56, ensuring that the moving rod 57 is always in contact with the inclined surface of the pressing wedge 54. The movement of the pressing wedge 54 causes the protrusion 56 to protrude within the discharge trough 34. When the pressing wedge 54 moves to press the moving rod 57, the moving rod 57 is compressed and moves linearly, causing the protrusion 56 to move, thus causing the discharge trough 34 to... The volume changes depending on the degree of protrusion of the protrusion 56. When the pressing inclined block 54 moves in the opposite direction, its supporting spring 55 directly applies a pulling force to the protrusion 56, causing the protrusion 56 to contract and the volume of the discharge trough 34 to increase.

[0041] Operation process: During wastewater treatment, the transfer pump 12 inputs wastewater from the pre-treatment tank into the biological treatment tank 11. During the transfer process, the water flow in the pipe drives the annular rotating blade 311 to rotate. The rotation of the annular rotating blade 311 drives the gear 321 to rotate. The rotation of the gear 321 drives the transmission wheel 322 to rotate. The rotation of the transmission wheel 322 drives the driven wheel 324 to rotate. The rotation of the driven wheel 324 drives the connecting rod 325 to rotate. The rotation of the connecting rod 325 drives the rotating disk 33 to rotate. The material above the rotating disk 33 passes through... The material rotates through the discharge chute 34 and enters above the conveyor wheel 43. The two sets of rotating discs 33 rotate at the same speed according to the different volumes of the discharge chute 34, thus proportioning the material. This eliminates the need for manual proportioning of bacteria and nutrients during biological treatment, and also eliminates the need for manual quantitative input of materials. The feeding speed of the proportioned material is directly proportional to the wastewater output speed, ensuring synchronization between material input and wastewater output, effectively improving the biological treatment efficiency. Furthermore, during operation, the threaded rod 52 can be rotated and moved... The moving pressure rod 53 causes the pressure block 54 to move, which in turn presses the moving rod 57. The moving rod 57 causes the protruding block 56 to protrude into the discharge trough 34, thereby changing the volume of the discharge trough 34. This allows the equipment operator to adjust the ratio of each bacterial strain according to actual needs, making the biological wastewater treatment device suitable for various types of wastewater. When the drive motor 13 drives the stirring roller 14 to rotate in the biological treatment tank 11 to maintain a mixing state, the stirring roller 14 synchronously drives the conveyor wheel 43 to rotate via the transmission belt. The rotation of the conveyor wheel 43 drives the guide blade 42 to rotate, so that the material entering through the drop trough 45 above the conveyor wheel 43 is conveyed downward through the guide blade 42, completing the initial mixing during the conveying process. Then, the guide blade 42 conveys the material to the wastewater output pipe, where it is mixed a second time by water flow impact. Finally, the wastewater enters the biological treatment tank 11, where the stirring roller 14 performs a third mixing. This three-stage mixing effectively avoids uneven mixing of materials and greatly improves the efficiency of biological treatment.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A box-type biological wastewater treatment device, characterized in that: include, Biological treatment tank (1), the biological treatment tank (1) is equipped with a pre-sedimentation tank and a post-biological treatment tank (11), the biological treatment tank (1) is equipped with a transfer pump (12), the transfer pump (12) transfers sewage from the pre-sedimentation tank to the post-sedimentation tank; Feeding box (2) is used to hold functional bacteria to be fed and some nutrients; The proportioning component (3) connects the feeding box (2) to the output pipe of the conveying pump (12) and feeds the material placed in the feeding box (2) according to the proportion. The material conveying volume is determined by the sewage output volume of the output pipe. The mixing component (4) rotates and stirs the material falling from the proportioning component (3), and then inputs the mixed material back into the output pipe of the delivery pump (12) for secondary mixing through the flow of water. The delivery pump (12) pipe is equipped with a Venturi jet structure (121), and this structure cooperates with the mixing component (4) to ensure that the material enters the output pipe.

2. The box-type biological wastewater treatment device as described in claim 1, characterized in that: A drive motor (13) is mounted above the biological treatment tank (11). The drive motor (13) is connected to a stirring roller (14). The stirring roller (14) is placed inside the biological treatment tank (11) to maintain a uniform mixing state inside the biological treatment tank (11).

3. The box-type biological wastewater treatment device as described in claim 2, characterized in that: The feeding box (2) is provided with a material distribution trough (21), and a material discharge port (22) is provided below the material distribution trough (21). The material in the material distribution trough (21) enters the sewage through the material discharge port (22).

4. The box-type biological wastewater treatment device as described in claim 3, characterized in that: The proportioning component (3) includes an internal drive component (31) disposed on the inner wall of the output pipe of the delivery pump (12), a rotating disk (33) disposed in the biological treatment tank (1), a discharge trough (34) provided on the rotating disk (33), and a transmission component (32) connecting the internal drive component (31) and the rotating disk (33). The rotating disk (33) is located inside the discharge port (22). The internal drive component (31) is driven by the water flow in the pipe and drives the rotating disk (33) to rotate through the transmission component (32), so that the material above the rotating disk (33) is transferred to the bottom of the rotating disk (33) through rotation.

5. The box-type biological wastewater treatment device as described in claim 4, characterized in that: The internal drive assembly (31) includes an annular rotating blade (311) installed in the output pipe of the delivery pump (12), and the outer ring of the annular rotating blade (311) is provided with a toothed groove (312). When the water flows through the annular rotating blade (311), the annular rotating blade (311) is driven to rotate by the flowing water.

6. The box-type biological wastewater treatment device as described in claim 5, characterized in that: The transmission component (32) includes a gear (321) meshing with a toothed groove (312), a transmission wheel (322) is installed at the end of the gear (321), a driven wheel (324) is installed on the inner wall of the feeding box (2), the driven wheel (324) is fixedly connected to the rotating disk (33) through a connecting rod (325), and the driven wheel (324) is connected to the transmission wheel (322) through a belt (323).

7. The box-type biological wastewater treatment device as described in claim 6, characterized in that: The mixing component (4) includes a conveying pipe (41) installed below the discharge port (22). The inner wall of the conveying pipe (41) is connected to a conveying wheel (43) via a bearing. The top of the conveying wheel (43) is provided with a sliding inclined surface (44). A drop groove (45) is opened in the middle section of the sliding inclined surface (44). One side of the conveying wheel (43) has an opening for connecting the conveying wheel (43) to the shaft of the mixing roller (14) via a transmission belt. A guide blade (42) is installed at the bottom of the conveying wheel (43). The guide blade (42) is located below the drop groove (45).

8. The box-type biological wastewater treatment device as described in claim 7, characterized in that: The feeding box (2) is equipped with an adjustment component (5). The adjustment component (5) can adjust the two sets of rotating disks (33) separately. By changing the volume of the feeding trough (34), the material ratio can be completed by rotating the rotating disks (33).

9. The box-type biological wastewater treatment device as described in claim 8, characterized in that: The adjustment assembly (5) includes a threaded rod (52) installed in the feeding box (2). One end of the threaded rod (52) is equipped with an adjustment knob (51). The threaded rod (52) and the connecting rod body (325) are on the same axis. A pressing rod (53) is provided through the connecting rod body (325). The pressing rod (53) extends from one side of the threaded rod (52) to the interior of the rotating disk (33). A spring recovery element (531) is provided between the pressing rod (53) and the feeding box (2).

10. The box-type biological wastewater treatment device as described in claim 9, characterized in that: One end of the pressing rod (53) is equipped with a pressing inclined block (54), the inner wall of the feeding trough (34) is equipped with a support spring (55), the end of the support spring (55) is equipped with a protrusion (56), the outer wall of the protrusion (56) is equipped with a moving rod (57), and one end of the moving rod (57) extends to one side of the pressing inclined block (54). The support spring (55) applies a contraction force to the protruding block (56), so that the moving rod (57) is always in contact with the inclined surface of the pressing block (54), and the movement of the pressing block (54) causes the protruding block (56) to protrude in the discharge groove (34).

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