Carbon source feeding pipe and biological circuit coupled vertical flow constructed wetland combined system

Abstract

The invention relates to a carbon source feeding pipe and biological circuit coupled vertical flow constructed wetland combined system, which relates to the technical field of environmental protection and water treatment, and comprises a vertical flow constructed wetland system and a carbon source feeding pipe, the vertical-flow constructed wetland system comprises an anaerobic zone, a vertical-flow anode zone, a vertical-flow anode, a vertical-flow cathode zone and a vertical-flow cathode which are arranged from bottom to top; the vertical-flow anode and the vertical-flow cathode form a loop through a wire and a load connected in series on the wire; the bottom of the vertical flow constructed wetland system is provided with a water inlet, and the top is provided with a water outlet; the carbon source feeding pipe penetrates through the anaerobic zone, the vertical flow anode zone and the vertical flow cathode zone and is provided with a communicating hole, a carbon source module is arranged in the carbon source feeding pipe, and the carbon source module can slide in the carbon source feeding pipe to change the position of the carbon source module. The vertical flow constructed wetland system has the advantages that accurate feeding of the carbon source is achieved, waste of the whole carbon source is reduced, and the sewage treatment effect of the vertical flow constructed wetland system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of environmental protection water treatment, and in particular to a carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combination system. Background Art

[0002] Vertical flow artificial wetland is an effective water treatment technology that combines the characteristics of surface flow wetland system and subsurface flow wetland system. The advantages of vertical flow artificial wetland include high treatment efficiency, small climate impact, good sanitary conditions, and reduced floor space. In the process of sewage purification, vertical flow artificial wetlands mainly remove organic matter through the combined action of physical interception and precipitation and biological absorption and degradation. In the process of sewage treatment by vertical flow artificial wetlands, combined with biofuel cells, chemical energy can be converted into electrical energy for power generation, thereby realizing the recycling of electricity. The vertical flow artificial wetland is divided into multiple treatment areas along the vertical direction. Corresponding microorganisms are added to each treatment area to catalyze the reaction of organic matter in the sewage. In the process of sewage treatment by microorganisms in each treatment area, the carbon source is a key factor in providing the carbon elements required for microbial growth and promoting the biodegradation process. Therefore, the carbon content in sewage has an important influence on microbial growth and metabolism, nitrification and denitrification processes, etc. Therefore, ensuring sufficient carbon source in sewage is the key to the sewage treatment effect of vertical flow constructed wetlands.

[0003] The existing method of placing carbon sources in vertical flow artificial wetlands is to add a carbon source placement module upstream of the treatment area in the vertical flow artificial wetland. When sewage flows through the carbon source placement module, the carbon content in the sewage is increased to ensure sufficient carbon sources in each treatment area. However, the carbon sources in the downstream treatment area are consumed by the upstream treatment area, making it difficult to ensure sufficient carbon sources in the downstream treatment area, resulting in difficulty in accurately placing carbon sources in each treatment area. Summary of the invention

[0004] In order to improve the problem of difficulty in accurately delivering carbon sources to each treatment area, the present application provides a carbon source delivery tube and a biological circuit coupled vertical flow artificial wetland combination system.

[0005] The present application provides a carbon source delivery tube and biological circuit coupled vertical flow artificial wetland combination system adopts the following technical solutions: A carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combined system, comprising a vertical flow artificial wetland system and a carbon source delivery pipe; The vertical flow artificial wetland system comprises an anaerobic zone, a vertical flow anode zone, a vertical flow anode, a vertical flow cathode zone and a vertical flow cathode arranged from bottom to top, wherein a loop is formed between the vertical flow anode and the vertical flow cathode through a wire and a load connected in series on the wire; The vertical flow artificial wetland system is provided with a water inlet at the bottom and a water outlet at the top; The carbon source delivery tube is passed through the anaerobic zone, the vertical flow anode zone, and the vertical flow cathode zone, and is provided with a connecting hole connected with the anaerobic zone, the vertical flow anode zone, and the vertical flow cathode zone. A carbon source module is arranged in the carbon source delivery tube, and the carbon source module can slide in the carbon source delivery tube to change the position of the carbon source module.

[0006] By adopting the above technical solution, when the vertical flow artificial wetland system treats sewage, the sewage enters the bottom of the vertical flow artificial wetland system through the water inlet, and then passes through the anaerobic zone, the vertical flow anode zone, and the vertical flow cathode zone from bottom to top, and relies on the microorganisms and plants in the corresponding areas to treat the sewage. After treatment, clean water is formed and flows out from the water outlet at the top, completing the treatment of sewage by the vertical flow artificial wetland system; In the vertical flow artificial wetland system, the anaerobic area and the vertical flow anode area are degraded by microorganisms to produce protons and electrons. The electrons act on the vertical flow anode and flow to the vertical flow cathode through external wires. The protons flow into the vertical flow cathode area and combine with the electrons to form a loop, realizing the conversion of chemical energy and electrical energy. As microorganisms catalyze the reaction of organic matter, the carbon content in the corresponding area decreases, and the carbon source module is moved along the carbon source delivery pipe to the corresponding anaerobic zone, vertical flow anode zone, and vertical flow cathode zone. The sewage passes through the connecting hole and contacts the carbon source module, thereby achieving precise delivery of carbon sources in the anaerobic zone, vertical flow anode zone, and vertical flow cathode zone, which can reduce the overall waste of carbon sources and improve the sewage treatment effect of the vertical flow artificial wetland system.

[0007] In a specific implementation scheme, the carbon source module includes a carbon source block, a carrier tube and a pull-out ring, the carrier tube is slidably connected to the carbon source delivery tube, the carbon source block is embedded in the carrier tube, and the pull-out ring is fixedly arranged on the top of the carrier tube.

[0008] By adopting the above technical solution, the tool hook is used to hang the draw ring, driving the carrier tube and the carbon source block to slide, thereby improving the convenience of moving the position of the carbon source block.

[0009] In a specific embodiment, the internal matrix of the vertical flow artificial wetland system is, from bottom to top, a gravel layer, an iron-carbon slow-release carbon source and volcanic rock, and an ecological soil layer.

[0010] In a specific feasible implementation scheme, an opening and closing layer is provided at the bottom of the anaerobic zone, the vertical flow anode zone, and the vertical flow cathode zone. The opening and closing layer is used to block the flow of sewage so that the sewage flows into the downstream area through the carbon source delivery pipe. The carrier tube can move to the position of the opening and closing layer and control the opening or closing of the opening and closing layer.

[0011] By adopting the above technical solution, when the carbon source is delivered to the three areas, the carrier tube is moved to the opening and closing layer of the corresponding area, and the opening and closing layer is controlled to be closed, so that the upstream sewage passes through the carbon source block in the carbon source delivery tube, and then flows into the downstream area to be added, thereby improving the uniformity of carbon source delivery in the anaerobic zone, the vertical flow anode zone, and the vertical flow cathode zone.

[0012] In a specific feasible implementation scheme, the opening and closing layer includes an upper mesh layer and a lower mesh layer that are spaced apart, the carbon source delivery tube is passed through the upper mesh layer and the lower mesh layer, a plurality of water holes are opened on the lower mesh layer, a plurality of plugging parts for plugging the water holes are provided on the upper mesh layer, the plugging parts correspond to the water holes one by one and are relatively arranged, the lower mesh layer is fixedly connected to the carbon source delivery tube, the upper mesh layer is slidably connected to the carbon source delivery tube, and the carrier tube controls the plugging parts to be inserted into and withdrawn from the water holes through a control part.

[0013] By adopting the above technical solution, when the carrier tube moves to the corresponding opening and closing layer position, the carrier tube is pressed down from the mesh plate layer to the lower mesh plate layer, so that the blocking part is inserted into the water hole, the water hole is blocked, and the sewage from the upstream is gathered and flows into the carbon source delivery tube through the connecting pipe, and then after the carbon source delivery is completed through the carbon source block, it flows into the downstream area through the connecting hole again. The sewage after the carbon source delivery fills the downstream area, thereby improving the uniformity of the carbon source delivery.

[0014] In a specific feasible implementation scheme, the control member includes a telescopic spring and a control part. The telescopic spring is arranged between the upper mesh layer and the lower mesh layer and abutted against each other so that the upper mesh layer and the lower mesh layer are spaced apart. The carbon source delivery tube is provided with sliding holes at positions corresponding to the upper mesh layer. The control part is fixedly arranged on the upper mesh layer and extends into the carbon source delivery tube. The carrier tube can press down the control part to move it so that the control part is inserted into the water hole.

[0015] By adopting the above technical solution, when the opening and closing layer is closed, the load-carrying tube is driven to press the control part downward to move, and the control part drives the upper mesh plate layer to move downward to the lower mesh plate layer, so that the opening and closing layer is closed. When the opening and closing layer is opened, the load-carrying tube is separated from the control part, and the telescopic spring pushes the upper mesh plate layer to move upward, so that the opening and closing layer is opened, thereby improving the convenience of opening and closing the opening and closing layer.

[0016] In a specific possible implementation scheme, the projections of the three groups of control parts on the horizontal plane are staggered, and a driving part for pressing down the control parts is provided on the carrier tube, and the driving part can be aligned with the three groups of control parts respectively through the rotation of the carrier tube.

[0017] By adopting the above technical solution, the carrier tube is rotated so that the driving part is opposite to the three control parts respectively, so as to realize the separate control of the three opening and closing layers, thereby improving the convenience of the carrier tube in controlling the three opening and closing layers.

[0018] In a specific implementation scheme, three groups of guide grooves are opened on the inner wall of the carbon source delivery tube, and the three groups of guide grooves are arranged along the axial direction of the carbon source delivery tube and correspond one by one to the three groups of control parts. The driving part is provided with a guide part for inserting into the guide groove.

[0019] By adopting the above technical solution, the guide groove guides the guide part, so that the drive part and the control part are aligned when the carrier tube slides, and the stability of the carrier tube controlling the opening and closing of the opening and closing layer is improved.

[0020] In a specific possible implementation scheme, the guide part is slidably inserted into the driving part, and the guide part and the driving part are connected by an extrusion spring. The extrusion spring is used to drive the guide part to be inserted into the guide groove. A guide surface is provided on the bottom wall of the guide groove, and the guide surface is used to guide the guide part to rotate out of the guide groove.

[0021] By adopting the above technical solution, when the driving part is aligned with the corresponding control part, the extrusion spring pushes the guide part to be inserted into the corresponding guide groove. When the driving part needs to be aligned with other control parts, the carrier tube is rotated, and the guide part is rotated out of the guide groove under the guidance of the guide surface, and inserted into the corresponding guide groove as the carrier tube rotates, thereby improving the convenience of adjusting the position of the driving part.

[0022] In a specific possible implementation manner, a supporting mesh layer is provided above each of the upper mesh plate layers.

[0023] By adopting the above technical solution, the support of the upper panel layer by the supporting mesh layer is utilized to reduce the pressure of the substrate above the upper panel layer on the upper panel layer, thereby improving the stability of the upper panel layer driven by the telescopic spring to move upward.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. As microorganisms catalyze the reaction of organic matter, the carbon content in the corresponding area decreases, and the carbon source module is moved along the carbon source delivery pipe to the corresponding anaerobic zone, vertical flow anode zone, and vertical flow cathode zone. The sewage passes through the connecting hole and contacts the carbon source module, thereby realizing the precise delivery of carbon sources in the anaerobic zone, vertical flow anode zone, and vertical flow cathode zone, which can reduce the overall waste of carbon sources and improve the sewage treatment effect of the vertical flow artificial wetland system; 2. The biological circuit type is combined with the vertical flow artificial wetland, and the synergistic effects and structures of the vertical flow artificial wetland in physics, chemistry and biology are combined to further denitrify the sewage and generate electricity, thereby improving the removal and resource utilization of nitrogen in the sewage; 3. When the carrier tube moves to the corresponding opening and closing layer position, the carrier tube is pressed down from the mesh plate layer to the lower mesh plate layer, so that the blocking part is inserted into the water hole, the water hole is blocked, and the sewage from the upstream is gathered and flows into the carbon source delivery pipe through the connecting pipe, and then after the carbon source delivery is completed through the carbon source block, it flows into the downstream area through the connecting hole again. The sewage after the carbon source delivery fills the downstream area, thereby improving the uniformity of the carbon source delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a carbon source delivery tube and a biological circuit coupled vertical flow artificial wetland combination system of Example 1 of the present application.

[0026] Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0027] Figure 3 It is a structural schematic diagram of a carbon source delivery tube and a biological circuit coupled vertical flow artificial wetland combination system of Example 2 of the present application.

[0028] Figure 4 yes Figure 2 Enlarged view of part B in the middle.

[0029] Figure 5 yes Figure 2 Enlarged view of part C in the middle.

[0030] Figure 6 It is a schematic diagram for showing the projection structure of three groups of control parts on a plane.

[0031] Figure 7 It is a structural schematic diagram for showing the cooperation between the guide part and the guide groove.

[0032] Figure 8 yes Figure 2 Enlarged view of part D in the middle.

[0033] Explanation of the reference numerals: 1. vertical flow artificial wetland system; 11. water inlet; 12. water outlet; 13. water collection tank; 14. water outlet pipe; 15. water inlet area; 2. carbon source delivery pipe; 21. connecting hole; 22. carbon source module; 221. carbon source block; 222. carrier tube; 223. pull-out ring; 3. anaerobic area; 4. vertical flow anode area; 41. vertical flow anode; 5. vertical flow cathode area; 51. vertical flow cathode; 52. wetland plants; 6. opening and closing layer; 61. upper mesh layer; 62. lower mesh layer; 63. water hole; 64. sealing part; 65. control part; 651. telescopic spring; 652. control part; 653. sliding through hole; 654. driving part; 655. guide groove; 656. guide surface; 657. guide part; 658. extrusion spring; 659. contact surface; 7. supporting mesh layer. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-8 This application is described in further detail.

[0035] The embodiment of the present application discloses a carbon source delivery pipe and a biological circuit coupled vertical flow artificial wetland combination system.

[0036] Example 1 Reference Figure 1 , Figure 2 A carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combination system comprises a vertical flow artificial wetland system 1 and a carbon source delivery pipe 2. The vertical flow artificial wetland system 1 is provided with a water inlet 11 and a water outlet 12 on the top, so that sewage enters the vertical flow artificial wetland system 1 from the bottom and is discharged from the top. The vertical flow artificial wetland system 1 is provided with a water collection pool 13 around the water outlet 12. The pool wall of the water collection pool 13 is higher than the water outlet 12, so that the treated water can flow over the water outlet 12 into the water collection pool 13. The bottom of the water collection pool 13 is provided with a water outlet pipe 14 to discharge the water flowing into the water collection pool 13.

[0037] Reference Figure 1 , Figure 2 , the vertical flow artificial wetland system 1 is arranged from bottom to top in the anaerobic zone 3, the vertical flow anode zone 4, the vertical flow anode 41, the vertical flow cathode zone 5 and the vertical flow cathode 51. The anaerobic zone 3 is composed of gravel and ceramsite with a particle size of 10-20mm, and the filler height is about 150-200mm. The vertical flow anode zone 4 is composed of corn cob biocarbon source and volcanic rock with a particle size of 5-10mm, and the filler height is about 200-250mm. The vertical flow cathode zone 5 is composed of ecological soil filler, and the filler height is about 100-200mm. Wetland plants 52 are planted on the upper part of the vertical flow artificial wetland system 1. The wetland plant 52 is yellow calamus, which has good ecological value, economic value, aesthetic value and water purification ability.

[0038] Reference Figure 1 , Figure 2 The carbon source delivery pipe 2 is vertically arranged in the anaerobic zone 3, the vertical flow anode zone 4, and the vertical flow cathode zone 5. The carbon source delivery pipe 2 is made of PVC material, with an outer diameter of 70mm, an inner diameter of 60mm, and a length of 600mm. The pipe wall is evenly distributed with connecting holes 21. Each connecting hole 21 is 30mm apart in the longitudinal direction and has a diameter of 10mm. To ensure that the anaerobic zone 3, the vertical flow anode zone 4, and the vertical flow cathode zone 5 are all connected to the carbon source delivery pipe 2 through the connecting holes 21.

[0039] Reference Figure 1 , Figure 2 The carbon source delivery tube 2 is provided with a carbon source module 22. The carbon source module 22 in this embodiment includes a carbon source block 221, a carrier tube 222 and a pull ring 223. The carrier tube 222 is slidably connected to the carbon source delivery tube 2. The carbon source block 221 is embedded in the carrier tube 222. The carbon source block 221 uses a fixed carbon source, which can be selected from agricultural waste, natural cellulose, artificial synthetic polymers, and natural plants containing cellulose. The carbon source block 221 is a porous structure, and the contact area between the carbon source block 221 and the sewage. The pull ring 223 is fixedly arranged on the top of the carrier tube 222, and the pull ring 223 is pulled by a tool to control the up and down movement of the carbon source position.

[0040] The simulated sewage first enters the vertical flow artificial wetland system 1 from the water inlet 11, and then flows into the anaerobic zone 3, the vertical flow anode zone 4, and the vertical flow cathode zone 5 in sequence. Finally, the treated water flows into the collection tank 13 and is collected through the outlet pipe 14.

[0041] In the vertical flow artificial wetland system 1, the anaerobic area 3 and the vertical flow anode area 4 are degraded by microorganisms to produce protons and electrons, and the electrons flow to the vertical flow cathode 51 through external wires. In the vertical flow cathode area 5, the wetland plants 52 and the air provide oxygen to cause nitrification reaction, and nitrate obtains electrons from the vertical flow cathode 51 and is reduced. Thus, sewage treatment is realized to generate electricity.

[0042] The implementation principle of Example 1 is: as microorganisms catalyze the reaction of organic matter, the carbon content in the corresponding area decreases, and the carbon source module 22 is moved along the carbon source delivery pipe 2 to the corresponding anaerobic zone 3, vertical flow anode zone 4, and vertical flow cathode zone 5. The sewage passes through the connecting hole 21 and contacts the carbon source module 22, thereby achieving precise delivery of carbon sources in the anaerobic zone 3, vertical flow anode zone 4, and vertical flow cathode zone 5, which can reduce the overall waste of carbon sources and improve the sewage treatment effect of the vertical flow artificial wetland system 1.

[0043] Example 2 Reference Figure 3 , Figure 4The difference between this embodiment and embodiment 1 is that an opening and closing layer 6 is provided at the bottom of the anaerobic zone 3, the vertical flow anode zone 4, and the vertical flow cathode zone 5. The setting of the opening and closing layer 6 forms a water inlet area 15 at the bottom of the anaerobic zone 3. The opening and closing layer 6 is used to block the flow of sewage to the downstream area, so that the sewage flows into the downstream area through the carbon source delivery pipe 2. The carrier tube 222 can move to the position of the opening and closing layer 6 and control the opening or closing of the opening and closing layer 6.

[0044] The opening and closing layer 6 in this embodiment includes an upper mesh plate layer 61 and a lower mesh plate layer 62 which are arranged at intervals. The upper mesh plate layer 61 is a plate-like structure with meshes. The lower mesh plate layer 62 is provided with a plurality of water holes 63. The sewage passes through the upper mesh plate layer 61 and the lower mesh plate layer 62 by means of the water holes 63 and the meshes in the upper mesh plate layer 61, so as to realize the sewage flowing in various areas of the vertical flow artificial wetland system 1. The upper mesh plate layer 61 is slidably arranged in the vertical flow artificial wetland system 1, and the lower mesh plate layer 62 is fixedly arranged in the vertical flow artificial wetland system 1. A supporting mesh layer 7 is arranged above each upper mesh plate layer 61. The supporting mesh layer 7 supports the upper mesh plate layer 61, reduces the pressure of the substrate above the upper mesh plate layer 61 on the upper mesh plate layer 61, and improves the stability of the telescopic spring 651 driving the upper mesh plate layer 61 to move upward.

[0045] Reference Figure 3 , Figure 4 The carbon source delivery tube 2 is passed through the upper mesh layer 61, the lower mesh layer 62 and the supporting mesh layer 7. A sealing portion 64 is fixedly provided on the side of the upper mesh layer 61 facing the lower mesh layer 62. The sealing portion 64 corresponds to the water holes 63 one by one and is arranged in coordination. When the carrier tube 222 carries the carbon source block 221 and moves to the opening and closing layer 6 at the bottom of the corresponding area, the carrier tube 222 controls the sealing portion 64 to be inserted into and withdrawn from the water holes 63 through the control component 65, thereby realizing the control of the opening and closing of the opening and closing layer 6.

[0046] Reference Figure 3 , Figure 4 and Figure 5 In this embodiment, the control member 65 includes a telescopic spring 651 and a control part 652. The telescopic spring 651 is arranged between the upper mesh layer 61 and the lower mesh layer 62, and is arranged in abutment, so that the upper mesh layer 61 and the lower mesh layer 62 are arranged at intervals. The carbon source delivery tube 2 is provided with two sliding holes 653 at the position corresponding to the upper mesh layer 61. The two sliding holes 653 are opposite along the circumference of the carbon source delivery tube 2. Each sliding hole 653 is arranged along the axial direction of the carbon source delivery tube 2. The control part 652 corresponds to the sliding hole 653 one by one. Each control part 652 is fixedly arranged on the upper mesh layer 61 and extends into the carbon source delivery tube 2.

[0047] Reference Figure 6 , Figure 7The projections of the three control units 652 on the horizontal plane are staggered and arranged at intervals of 60° along the circumference of the carbon source delivery tube 2. Two driving units 654 are arranged between the carrier tube 222 and the inner wall of the carbon source delivery tube 2. The two driving units 654 slide along the inner wall of the carbon source delivery tube 2 and are opposite to each other along the circumference of the carrier tube 222, thereby ensuring that the carrier tube 222 rotates 60° so that the driving units 654 are opposite to the control units 652 of different groups. When the carbon source needs to be added to the corresponding area, the carrier tube 222 is rotated so that the driving units 654 are opposite to the control units in the corresponding area. The control part 652 is aligned, and then a tool is used to press down the carrier tube 222. The carrier tube 222 drives the driving part 654 to press down the control part 652. The control part 652 drives the upper mesh plate layer 61 to move downward, and drives the blocking part 64 to insert into the water hole 63 to block the water hole 63, so that the sewage upstream of the corresponding lower mesh plate layer 62 is gathered and flows into the carbon source delivery pipe 2 through the connecting pipe, and then after the carbon source is delivered through the carbon source block 221, it flows into the downstream area through the connecting hole 21 again. The sewage after the carbon source is delivered fills the downstream area, thereby improving the uniformity of the carbon source delivery.

[0048] Reference Figure 7 Three groups of guide grooves 655 are opened on the inner wall of the carbon source delivery tube 2. The three groups of guide grooves 655 are arranged along the axial direction of the carbon source delivery tube 2 and correspond one by one to the three groups of control parts 652. The bottom wall of each group of guide grooves 655 is an arc-shaped guide surface 656.

[0049] Reference Figure 7 , Figure 8 The driving part 654 is provided with a guide part 657 for inserting into the guide groove 655. The guide part 657 is plugged into the driving part 654 and slides along the radial direction of the driving part 654. The driving part 654 is embedded with a pressing spring 658, which is sleeved on the guide part 657. One end of the pressing spring 658 is fixedly connected to the guide part 657, and the other end is fixedly connected to the driving part 654. Initially, the pressing spring 658 applies a thrust to the guide part 657 toward the carbon source delivery tube 2. The front end of the guide part 657 is an arc-shaped contact surface 659 that cooperates with the guide surface 656, so that when the carrier tube 222 is rotated, the guide part 657 can rotate out of the guide groove 655.

[0050] When the carrier tube 222 is rotated, the guide part 657 is inserted into the guide groove 655. The guide groove 655 guides the guide part 657, so that the drive part 654 and the control part 652 are aligned when the carrier tube 222 slides, thereby improving the stability of the carrier tube 222 controlling the opening and closing of the opening and closing layer 6. When the drive part 654 is aligned with the corresponding control part 652, the pressing spring 658 pushes the guide part 657 to be inserted into the corresponding guide groove 655. When the drive part 654 needs to be aligned with the other control parts 652, the carrier tube 222 is rotated, and the guide part 657 is rotated out of the guide groove 655 under the guidance of the guide surface 656, and is inserted into the corresponding guide groove 655 as the carrier tube 222 rotates, thereby improving the convenience of adjusting the position of the drive part 654.

[0051] The implementation principle of Example 2 is as follows: when the carbon source needs to be added to the corresponding area, the carrier tube 222 is rotated so that the driving part 654 is aligned with the control part 652 in the corresponding area, and then the carrier tube 222 is pressed down by a tool. The carrier tube 222 drives the driving part 654 to press down the control part 652, and the control part 652 drives the upper mesh layer 61 to move downward, and drives the blocking part 64 to be inserted into the water hole 63 to block the water hole 63, so that the sewage upstream of the corresponding lower mesh layer 62 is gathered and flows into the carbon source delivery pipe 2 through the connecting pipe, and then after the carbon source delivery is completed through the carbon source block 221, it flows into the downstream area again through the connecting hole 21. The sewage after the carbon source delivery fills the downstream area, thereby improving the uniformity of the carbon source delivery.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combined system, characterized by: It comprises a vertical flow artificial wetland system (1) and a carbon source delivery pipe (2); The vertical flow artificial wetland system (1) comprises an anaerobic zone (3), a vertical flow anode zone (4), a vertical flow anode (41), a vertical flow cathode zone (5) and a vertical flow cathode (51) arranged from bottom to top, wherein a loop is formed between the vertical flow anode (41) and the vertical flow cathode (51) via a conductor and a load connected in series to the conductor; The vertical flow artificial wetland system (1) is provided with a water inlet (11) at the bottom and a water outlet (12) at the top; The carbon source delivery pipe (2) is passed through the anaerobic zone (3), the vertical flow anode zone (4), and the vertical flow cathode zone (5), and is provided with a connecting hole (21) connected with the anaerobic zone (3), the vertical flow anode zone (4), and the vertical flow cathode zone (5). A carbon source module (22) is provided in the carbon source delivery pipe (2), and the carbon source module (22) can slide in the carbon source delivery pipe (2) to change the position of the carbon source module (22).

2. The carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combined system according to claim 1 is characterized by: The carbon source module (22) comprises a carbon source block (221), a carrier tube (222) and a pull-out ring (223); the carrier tube (222) is slidably connected to the carbon source delivery tube (2); the carbon source block (221) is embedded in the carrier tube (222); and the pull-out ring (223) is fixedly arranged on the top of the carrier tube (222).

3. The carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combined system according to claim 2 is characterized by: The internal matrix of the vertical flow artificial wetland system (1) comprises, from bottom to top, a gravel layer, an iron-carbon slow-release carbon source and volcanic rock, and an ecological soil layer.

4. The carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combined system according to claim 2 is characterized by: The bottoms of the anaerobic zone (3), the vertical flow anode zone (4), and the vertical flow cathode zone (5) are all provided with an opening and closing layer (6), and the opening and closing layer (6) is used to block the flow of sewage so that the sewage flows into the downstream area through the carbon source delivery pipe (2), and the carrier tube (222) can move to the position of the opening and closing layer (6) and control the opening or closing of the opening and closing layer (6).

5. The carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combined system according to claim 4 is characterized by: The opening and closing layer (6) comprises an upper mesh layer (61) and a lower mesh layer (62) which are arranged at intervals. The carbon source delivery pipe (2) is arranged through the upper mesh layer (61) and the lower mesh layer (62). The lower mesh layer (62) is provided with a plurality of water holes (63). The upper mesh layer (61) is provided with a plurality of blocking parts (64) for blocking the water holes (63). The blocking parts (64) correspond to the water holes (63) one by one and are arranged relatively to each other. The carrier tube (222) controls the blocking parts (64) to be inserted into and withdrawn from the water holes (63) through a control part (65).

6. The carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combined system according to claim 5 is characterized by: The lower mesh layer (62) is fixedly connected to the carbon source delivery tube (2), and the upper mesh layer (61) is slidably connected to the carbon source delivery tube (2); The control member (65) comprises a telescopic spring (651) and a control part (652). The telescopic spring (651) is arranged between the upper mesh layer (61) and the lower mesh layer (62) and is arranged in abutment with each other so that the upper mesh layer (61) and the lower mesh layer (62) are arranged at a distance from each other. The carbon source delivery tube (2) is provided with a sliding through hole (653) at a position corresponding to the upper mesh layer (61). The control part (652) is fixedly arranged on the upper mesh layer (61) and extends into the carbon source delivery tube (2). The carrier tube (222) can press down the control part (652) to move it so that the control part (652) is inserted into the water hole (63).

7. The carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combined system according to claim 6 is characterized by: The projections of the three groups of control parts (652) on the horizontal plane are staggered, and a driving part (654) for pressing down the control part (652) is provided on the carrier tube (222). The driving part (654) can be aligned with the three groups of control parts (652) respectively through the rotation of the carrier tube (222).

8. The carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combined system according to claim 7 is characterized by: Three groups of guide grooves (655) are provided on the inner wall of the carbon source delivery tube (2). The three groups of guide grooves (655) are arranged along the axial direction of the carbon source delivery tube (2) and correspond one-to-one to the three groups of control parts (652). The driving part (654) is provided with a guide part (657) for inserting into the guide groove (655).

9. The carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combined system according to claim 8, characterized in that: The guide portion (657) is slidably inserted into the driving portion (654), and the guide portion (657) is connected to the driving portion (654) via a squeezing spring (658). The squeezing spring (658) is used to drive the guide portion (657) to be inserted into the guide groove (655). A guide surface (656) is provided on the bottom wall of the guide groove (655), and the guide surface (656) is used to guide the guide portion (657) to rotate out of the guide groove (655).

10. The carbon source delivery pipe and biological circuit coupled vertical flow artificial wetland combined system according to claim 5, characterized in that: A supporting mesh layer (7) is provided above each mesh plate layer (61).

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