A new type of tidal flow ecological wetland carbon source supply device

Abstract

The utility model discloses a novel tidal flow ecological wetland's additional carbon source supply device relates to ecological wetland technical field, including sewage collecting tank, and sewage collecting tank has agricultural waste filter pool through pipeline intercommunication, and agricultural waste filter pool has hydrolytic acidification pool - tidal flow ecological wetland integration device through pipeline intercommunication, and the perforated plug is arranged between ecological wetland and hydrolytic acidification pool, and the perforated plug includes two left and right settings and inserts the board, and the water flow hole is evenly seted up on the insert board, and the left end fixed with a plurality of U -shaped water guide plate of left -hand insert board, and the water guide plate's both ends all are seted up with the water mouth corresponding with water flow hole, adopt agricultural waste filter pool, and the agricultural waste such as straw, corn core is used as filter filling material, reduces operating cost, realizes agricultural waste resource utilization, and the volcanic rock and aerated concrete are used as wetland matrix, and have adsorption, microbial adhesion function, and material is cheap and easy to obtain, and the resource utilization rate is promoted.

Description

Technical Field

[0001] This utility model relates to the field of ecological wetland technology, specifically to a novel external carbon source supply device for tidal flow ecological wetlands. Background Technology

[0002] Tidal flow ecological wetlands, as a highly efficient ecological wastewater treatment technology, are widely used in rural wastewater and small-town wastewater treatment due to their advantages such as low energy consumption and environmental friendliness. Their core operating logic relies on the tidal rhythm of "periodic flooding-drying," and the biodegradability of wastewater can be improved by adding external carbon sources to enhance nitrogen and phosphorus removal. Therefore, the quality of the added carbon source supply directly affects the wetland's purification efficiency.

[0003] However, existing constructed wetlands have many shortcomings in practical applications: First, single-type constructed wetlands sometimes fail to achieve satisfactory results in wastewater treatment. The precision of water distribution and drainage control is insufficient, there is a lack of efficient water distribution structure design, the reoxygenation capacity is weak, and wastewater can easily pass through the wetland substrate locally and quickly, resulting in insufficient contact between the substrate and the wastewater. At the same time, drainage switching mostly relies on manual operation or simple valve control, which makes it difficult to accurately match tidal rhythms and has a slow response speed, failing to meet the dynamic operation requirements of wetlands. Second, the wastewater quality fluctuates greatly, and there may be a low carbon-to-nitrogen ratio, which in turn affects the metabolic efficiency of microorganisms, resulting in a lack of carbon source for denitrification and a decrease in nitrogen removal efficiency. Traditional methods of utilizing solid carbon sources involve screening and pre-treating agricultural waste and then directly filling it into constructed wetlands as a solid slow-release carbon source to ensure denitrification intensity. However, research has shown that the location of the added carbon source in the constructed wetland has a significant impact on denitrification, making it difficult to control precisely. Thirdly, it has a weak ability to treat large molecules in wastewater and cannot treat wastewater independently. It requires a pre-treatment unit to degrade the difficult-to-degrade large molecules in the wastewater first, resulting in poor operational stability and treatment capacity in the face of wastewater fluctuations. Utility Model Content

[0004] To address the above problems, this utility model provides a novel external carbon source supply device for tidal flow ecological wetlands, thus solving the aforementioned issues.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel external carbon source supply device for tidal flow ecological wetlands, comprising a sewage collection tank, wherein the sewage collection tank is connected to an agricultural waste filter pond via a pipe, the agricultural waste filter pond is connected to a hydrolysis acidification pond via a pipe, the hydrolysis acidification pond is connected to an ecological wetland, and a perforated insert plate is provided between the ecological wetland and the hydrolysis acidification pond; The perforated insert plate includes two insert plates arranged on the left and right sides. Water flow holes are evenly opened on the insert plates. Multiple U-shaped water guide plates are fixed to the left end of the left insert plate. Water outlets corresponding to the water flow holes are opened at both ends of the water guide plates. Multiple horizontal pipes connecting the water flow holes are arranged between the two insert plates. A transmission rod is rotatably connected inside the horizontal pipe. A water discharge pipe is rotatably connected inside the transmission rod. A motor is arranged on one side of the perforated insert plate. The motor is connected to the transmission rod for transmission.

[0006] Preferably, each of the horizontal tubes is connected to a spherical tube, and multiple blades are arranged along the circumference of the horizontal tube. The blades are arc-shaped and fixed to the transmission rod.

[0007] Preferably, the water outlet pipe has a through hole, and the transmission rod has a water hole, with the through hole corresponding to the water hole.

[0008] Preferably, the water guide plate has symmetrically arranged water-blocking plates fixed inside it. The water-blocking plates are all located at the lower end of the water outlet. The water-blocking plates are in a figure-eight shape, and the gap between the two water-blocking plates decreases from top to bottom.

[0009] Preferably, the pipes between the sewage collection tank and the agricultural waste filter, and the pipes between the agricultural waste filter and the hydrolysis acidification tank are all equipped with water pumps and timers, and the agricultural waste filter is provided with an overflow port.

[0010] Preferably, the upper end of the hydrolysis acidification tank is provided with a cover plate, the interior of the hydrolysis acidification tank is provided with a partition plate, the interior of the hydrolysis acidification tank is U-shaped, the front section of the hydrolysis acidification tank is filled with crushed stone and honeycomb filler, the rear section of the hydrolysis acidification tank is filled with combined filler, the top of the hydrolysis acidification tank is provided with an overflow port, and the lower end of the hydrolysis acidification tank is provided with a sludge discharge pipe.

[0011] Preferably, the ecological wetland is equipped with a ventilation pipe, multiple sampling ports are provided on the ecological wetland, the lower end of the ecological wetland is made of aerated concrete, and an exhaust pipe is provided at the lower end of the ecological wetland, with a solenoid valve and a timer installed on the exhaust pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Agricultural waste filter ponds are used to soak agricultural waste such as straw and corn cobs in the wastewater to obtain solid carbon source extract, which improves the carbon-nitrogen ratio, enhances the denitrification effect, reduces operating costs, and realizes the resource utilization of agricultural waste. Volcanic rock and aerated concrete are used as wetland substrates, which have both adsorption and microbial attachment functions. The materials are inexpensive and readily available, improving resource utilization. The timer controller links the water pump, solenoid valve, and motor to realize timed and automated control of wastewater transportation, drainage / water shut-off, without the need for frequent manual operation, saving manpower and providing precise control.

[0013] 2. The perforated insert plate's guide plate and baffle plate structure ensures that water is evenly distributed across the insert plate, preventing localized rapid passage and allowing wastewater to permeate evenly into the volcanic rock and aerated concrete matrix, ensuring full contact between the wetland matrix and the wastewater. Components such as the drive rod and blades enable rapid switching between drainage and shut-off, working in conjunction with the drain pipe and solenoid valve to meet the rhythmic needs of the tidal flow wetland's "flooding-drying" cycle, enhancing the alternating aerobic-anaerobic metabolism of microorganisms and improving nitrogen and carbon removal efficiency. Two staggered vent pipes extending directly to the bottom of the pool are added, with numerous small holes. When the wetland enters the drainage period, oxygen from the air is drawn into the voids of the wetland matrix under the negative pressure of the drainage, resulting in sufficient reoxygenation within the wetland. When the wetland enters the full-water period, the presence of the vent pipes also significantly improves the almost completely anaerobic working environment deep within the wetland, improving wastewater purification conditions.

[0014] 3. An integrated hydrolysis acidification tank and tidal flow ecological wetland device is installed to degrade recalcitrant macromolecular substances in wastewater first, reducing the footprint compared to assembling two separate devices. The hydrolysis acidification tank is equipped with a sludge discharge structure to prevent sludge accumulation during long-term operation. The water distribution area is filled with gravel and honeycomb packing for uniform water distribution. Combined packing is added to the reaction chamber. The combined packing is connected in series by a central rope to increase microbial attachment sites, enhance microbial activity, and improve the biodegradability and operational stability of wastewater. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the perforated insert plate of this utility model; Figure 3 This is a schematic diagram of the internal structure of the perforated insert plate of this utility model; Figure 4 This is a cross-sectional schematic diagram of the perforated insert plate of this utility model; Figure 5 This is a partially enlarged schematic diagram of the perforated insert plate of this utility model.

[0016] The diagram is labeled as follows: 1. Sewage collection tank; 2. Water pump; 3. Timer; 4. Solenoid valve; 5. Perforated insert plate; 11. Agricultural waste filter; 12. Cover plate; 13. Hydrolysis acidification tank; 14. Ecological wetland; 15. Sampling port; 16. Vent pipe; 17. Aerated concrete; 18. Drain pipe; 19. Sludge discharge pipe; 51. Connecting plate; 52. Water guide plate; 53. Motor; 54. Water discharge pipe; 55. Horizontal pipe; 56. Transmission rod; 511. Water flow hole; 521. Water outlet; 522. Water barrier plate; 541. Through hole; 551. Spherical tube; 561. Blade; 562. Water hole. Detailed Implementation

[0017] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0018] Please see Figure 1 , Figure 2 and Figure 3 A novel external carbon source supply device for tidal flow ecological wetlands includes a wastewater collection tank 1. Wastewater is temporarily stored in the wastewater collection tank 1 and then transported by a water pump 2. The water pump 2 is controlled by a timer 3 to start and stop at set times. The wastewater then enters an agricultural waste filter 11, using agricultural waste such as straw and corn cobs as filter media. The wastewater collection tank 1 is connected to the agricultural waste filter 11 via a pipeline. Its advantage is that it allows for centralized temporary storage of wastewater, solving the problems of scattered wastewater collection and difficulty in unified treatment. Utilizing the adsorption and filtration effects of agricultural waste, suspended impurities and some recalcitrant organic matter are initially removed, addressing the issues of insufficient wastewater pretreatment and high pressure on subsequent treatment. Wastewater is thoroughly soaked with agricultural waste to obtain a solid carbon source extract, which improves the carbon-to-nitrogen ratio, enhances denitrification, reduces operating costs, and realizes the resource utilization of agricultural waste. The agricultural waste filter 11 is connected to a hydrolysis acidification tank 13 via a pipeline. The packing material in the tank provides an attachment environment for microorganisms, decomposing complex organic matter into small, easily degradable molecules, improving the biodegradability of wastewater, and solving the problems of high levels of recalcitrant organic matter and low wetland purification efficiency in wastewater. The hydrolysis acidification tank 13 is connected to an ecological wetland 14, which... The volcanic rock filling the wetland 14 provides a carrier for microorganisms to attach to, which helps degrade organic matter. At the same time, the volcanic rock and aerated concrete 17 have the effect of adsorbing phosphorus and promoting biofilm formation. A perforated plate 5 is set between the ecological wetland 14 and the hydrolysis acidification tank 13 for precise control of wetland water distribution and drainage. When water passes through the perforated plate 5, it is dispersed by the water outlet 521 of the water guide plate 52 and blocked by the water baffle plate 522, so that the water covers the perforated plate 5, avoiding local rapid flow away and ensuring that the water passes evenly through the water flow hole 511.

[0019] Please see Figure 3 , Figure 4 and Figure 5The perforated insert plate 5 includes two left and right insert plates 51. Water flow holes 511 are evenly distributed on the insert plates 51 to ensure basic water permeability. Multiple U-shaped water guide plates 52 are fixed to the left end of the left insert plate 51. Water outlets 521 corresponding to the water flow holes 511 are opened at both ends of the water guide plates 52. The structure of the water guide plates 52 ensures that water is evenly distributed across the perforated insert plate 5, solving the problems of localized rapid water flow and uneven water distribution. Multiple horizontal pipes 55 connecting the water flow holes 511 are arranged between the two insert plates 51. A transmission rod 56 is rotatably connected inside each horizontal pipe 55. A motor 53 is installed on one side of the perforated insert plate 5. The motor 53 is connected to the transmission rod 56. The motor 53 drives the transmission rod 56 to rotate, thereby switching the drainage state. Each horizontal pipe 55 is connected to a spherical tube 551 to enhance the buffering and dispersion of water. Multiple blades 561 are arranged along the circumference of the horizontal pipe 55. The blades 561 are arc-shaped and fixed to the transmission rod 56. The blades 561 rotate with the transmission rod 56 to adjust the opening and closing of the drain pipe 54. The motor 53 drives the transmission rod 56 to rotate, which in turn drives the blades 561 to adjust the opening and closing of the through hole 541 of the drain pipe 54. When drainage is needed, the blades 561 rotate to open the through hole 541, and the water is quickly discharged through the spherical tube 551 and the horizontal pipe 55. At the same time, the blades 561 can promote the rapid flow of water. When closing is needed, the blades 561 block the through hole 541. Meanwhile, the solenoid valve 4 is linked with the timer 3 to further realize automated drainage control.

[0020] Please see Figure 3 , Figure 4 and Figure 5 The drain pipe 54 has a through hole 541 and the transmission rod 56 has a water hole 562. The through hole 541 and the water hole 562 correspond to each other. The flow and blockage of the two can realize rapid drainage or water shut-off, solving the problems of untimely drainage / water shut-off and poor controllability in wetlands. The water guide plate 52 has symmetrically arranged water-blocking plates 522 fixed inside. The water-blocking plates 522 are all located at the lower end of the water outlet 521. The water-blocking plates 522 are in a figure-eight shape. The gap between the two water-blocking plates 522 decreases from top to bottom, further blocking the local rapid flow of water and ensuring that the water is evenly spread across the perforated plate 5.

[0021] Please see Figure 1 , Figure 2 and Figure 5The pipes between the sewage collection tank 1 and the agricultural waste filter 11, and the pipes between the agricultural waste filter 11 and the hydrolysis acidification tank 13, are all equipped with water pumps 2 and timers 3. The timer 3 controls the water pumps 2 to start and stop at set times, realizing automated water delivery and solving the problems of cumbersome manual water delivery and inaccurate time control. The agricultural waste filter 11 is equipped with an overflow outlet, and the upper end of the hydrolysis acidification tank 13 is equipped with a cover plate 12, which serves to seal and prevent odors. The oxygen contact hydrolysis acidification tank 13 is topped with a cover plate 12 to maintain a sealed anaerobic environment. The water then flows into the water distribution area of ​​the tidal flow ecological wetland 14 through an overflow outlet. A perforated insert plate 5 is installed between the water distribution area and the substrate of the tidal flow ecological wetland 14. The hydrolysis acidification tank 13 has an internal partition and is U-shaped. The front water distribution area of ​​the hydrolysis acidification tank 13 is filled with materials such as crushed stone or honeycomb filler to evenly distribute water, while the rear reaction area is filled with... The system is filled with combined packing material to optimize the environment for microbial attachment and organic matter degradation. Microorganisms decompose complex organic matter into easily degradable small molecules, improving the biodegradability of wastewater. The hydrolysis acidification tank 13 is equipped with an overflow outlet, and a sludge discharge pipe 19 is installed at the lower end of the hydrolysis acidification tank 13 to meet the sludge discharge needs of different areas. The sludge generated during the process can be discharged periodically through the sludge discharge pipe 19, and the cover plate 12 serves to seal and prevent odor. The ecological wetland 14 is equipped with a ventilation pipe 16 to ensure an aerobic environment for microorganisms in the wetland and improve purification efficiency. The ecological wetland 14 has multiple sampling ports 15 for easy water quality monitoring. The lower end of the ecological wetland 14 is made of aerated concrete 17, and the middle part is made of volcanic rock to enhance the adsorption and phosphorus removal effect. The lower end of the ecological wetland 14 is equipped with a drain pipe 18, which is equipped with a solenoid valve 4 and a timer 3 to realize the drainage of accumulated water during equipment maintenance and improve the convenience of equipment operation and maintenance.

[0022] In summary, the coordinated structure enables fully automated control of the entire wastewater process, from collection, pretreatment, hydrolysis and acidification to precise wetland water distribution. This solves problems such as insufficient wastewater pretreatment, uneven wetland water distribution, and inflexible drainage control. Furthermore, through designs such as agricultural waste resource utilization and efficient microbial degradation, the purification efficiency, resource utilization rate, and operational stability of the device are improved, providing an efficient and controllable technical solution for the external carbon source supply of tidal flow ecological wetlands.

[0023] When using this utility model: Wastewater first flows into wastewater collection tank 1 for temporary storage. Water pump 2, controlled by timer 3, periodically transports wastewater from the collection tank to subsequent treatment units. Timer 3 automatically starts and stops water pump 2, eliminating the need for manual operation, ensuring precise and controllable water delivery time, and saving labor costs. Wastewater collection tank 1 acts as a buffer to prevent excessive instantaneous load on subsequent units. Wastewater then enters agricultural waste filter tank 11, where the adsorption and filtration properties of agricultural waste such as straw and corn cobs are utilized to initially remove suspended particles, colloids, and some recalcitrant organic matter. The wastewater is fully soaked with agricultural waste to obtain a solid carbon source extract, increasing the carbon-to-nitrogen ratio, enhancing denitrification, reducing operating costs, and realizing the resource utilization of agricultural waste. The pretreated wastewater flows into hydrolysis acidification tank 13. The combined packing material in the reaction chamber provides attachment sites for microorganisms, which hydrolyze and acidify complex organic matter into small, easily degradable molecules such as volatile fatty acids, significantly reducing their degradation. Improving the biodegradability of wastewater lays the foundation for subsequent purification of the tidal flow wetland. The sludge discharge pipe 19 can periodically discharge sludge from the pool, preventing sludge accumulation from affecting microbial activity and ensuring stable treatment results. The hydrolyzed and acidified water enters the tidal flow ecological wetland through the overflow outlet. Precise water distribution and drainage are achieved through the perforated insert plate 5. When the water passes through the perforated insert plate 5, it is dispersed by the water outlet 521 of the water guide plate 52 and blocked by the water baffle plate 522, so that the water is evenly spread across the water flow holes 511 of the insert plate 51, ensuring that the water does not pass through rapidly in a localized area, but evenly permeates into the ecological wetland 14 and the aerated concrete 17 matrix of the wetland. During the drainage / water shut-off stage: the motor 53 drives the transmission rod 56 to rotate, which drives the blade 561 to rotate, so that the through hole 541 of the water discharge pipe 54 and the water hole 562 of the transmission rod 56 are connected or blocked. When connected, the water is quickly discharged through the spherical pipe 551 and the horizontal pipe 55; when blocked, the drainage is shut off, realizing the rhythmic control of the tidal "rise and fall". Meanwhile, the solenoid valve 4 is linked with the timer 3 to further automate the control of drainage timing. The mechanical structure design of the perforated insert plate 5, including the water guide plate 52, the water barrier plate 522, and the transmission components, not only ensures uniform water distribution and allows the wetland substrate to fully contact the sewage, improving pollutant removal efficiency, but also enables rapid switching between drainage and shut-off, meeting the "periodic flooding-drying" operation requirements of tidal flow wetlands. This strengthens the aerobic-anaerobic alternating metabolism of microorganisms, enhancing the denitrification and carbon removal effects. Water quality is monitored regularly through the sampling port 15 to evaluate the treatment effect. The ventilation pipe 16 continuously replenishes oxygen to the wetland microorganisms. During equipment maintenance, the accumulated water is drained through the drain pipe 18. The cover plate 12 seals the hydrolysis acidification tank 13, providing odor and dust prevention.

[0024] In summary, through the coordinated operation of its various units, this device achieves fully automated and efficient operation of the entire wastewater treatment process from collection to purification. It reduces costs by utilizing inexpensive materials such as agricultural waste and ecological wetlands 14, and ensures uniform water distribution and tidal rhythm through precise control of perforated insert plates 5. Ultimately, the wastewater is deeply purified in the tidal flow wetland, while providing an additional carbon source for wetland microorganisms, thus enhancing the nitrogen and phosphorus removal effects. It is an ecological wastewater treatment device that combines economy, efficiency, and stability.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel external carbon source supply device for tidal flow ecological wetlands, characterized in that: It includes a sewage collection tank (1), which is connected to an agricultural waste filter (11) via a pipe. The agricultural waste filter (11) is connected to a hydrolysis acidification tank (13) via a pipe. The hydrolysis acidification tank (13) is connected to an ecological wetland (14). A perforated insert plate (5) is provided between the ecological wetland (14) and the hydrolysis acidification tank (13). The perforated insert plate (5) includes two insert plates (51) arranged on the left and right sides. Water flow holes (511) are evenly opened on the insert plates (51). Multiple U-shaped water guide plates (52) are fixed at the left end of the left insert plate (51). Water outlets (521) corresponding to the water flow holes (511) are opened at both the front and rear ends of the water guide plates (52). Multiple horizontal pipes (55) connecting the water flow holes (511) are arranged between the two insert plates (51). A transmission rod (56) is rotatably connected inside the horizontal pipe (55). A drain pipe (54) is rotatably connected inside the transmission rod (56). A motor (53) is arranged on one side of the perforated insert plate (5). The motor (53) is connected to the transmission rod (56) in a transmission connection.

2. The novel external carbon source supply device for tidal flow ecological wetlands according to claim 1, characterized in that: Each of the horizontal tubes (55) is connected to a spherical tube (551). Multiple blades (561) are arranged along the circumference of the horizontal tube (55). The blades (561) are arc-shaped and fixed on the transmission rod (56).

3. The novel external carbon source supply device for tidal flow ecological wetlands according to claim 1, characterized in that: The water pipe (54) has a through hole (541), and the transmission rod (56) has a water hole (562). The through hole (541) corresponds to the water hole (562).

4. The novel external carbon source supply device for tidal flow ecological wetlands according to claim 1, characterized in that: The water guide plate (52) has symmetrically arranged water-blocking plates (522) fixed inside. The water-blocking plates (522) are all located at the lower end of the water outlet (521). The water-blocking plates (522) are in the shape of an octagon, and the gap between the two water-blocking plates (522) decreases from top to bottom.

5. The novel external carbon source supply device for tidal flow ecological wetlands according to claim 1, characterized in that: The pipes between the sewage collection tank (1) and the agricultural waste filter (11), and the pipes between the agricultural waste filter (11) and the hydrolysis acidification tank (13) are all equipped with water pumps (2) and time controllers (3). An overflow port is provided in the agricultural waste filter (11).

6. The novel external carbon source supply device for tidal flow ecological wetlands according to claim 1, characterized in that: The hydrolysis acidification tank (13) is provided with a cover plate (12) at the upper end, a partition plate is provided inside the hydrolysis acidification tank (13), the inside of the hydrolysis acidification tank (13) is U-shaped, the hydrolysis acidification tank (13) is filled with packing material, an overflow port is provided on the hydrolysis acidification tank (13), and a sludge discharge pipe (19) is provided at the lower end of the hydrolysis acidification tank (13).

7. The novel external carbon source supply device for tidal flow ecological wetlands according to claim 1, characterized in that: The ecological wetland (14) is equipped with a ventilation pipe (16), and multiple sampling ports (15) are provided on the ecological wetland (14). The lower end of the ecological wetland (14) is made of aerated concrete (17), and an exhaust pipe (18) is provided at the lower end of the ecological wetland (14). A solenoid valve (4) and a timer (3) are provided on the exhaust pipe (18).

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