Floating wetland sewage treatment device

Abstract

The utility model provides a sewage treatment device for a floating wetland, relates to the technical field of water treatment, and solves the technical problems in the prior art that most impurities and pollutants are easily carried away by water flow and are difficult to effectively intercept and remove due to the flowing characteristics of the water flow in the floating wetland. The floating wetland sewage treatment device comprises a floating base which is used for bearing pollution-resistant strong aquatic plants; the screening assembly can extend into the to-be-treated wetland sewage to filter and screen the sewage; and the rotating mechanism is connected with the screening assembly and the floating base and used for adjusting the position of the screening assembly on the floating base. And the part with the filtering function always faces one side of the flowing direction of the wetland sewage. Therefore, the screening assembly can continuously and effectively intercept pollutants, and the pollutants are prevented from going deep into a substrate layer in the wetland along with water flow, so that the blockage risk of the substrate layer is reduced, and the service life of the wetland is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a floating wetland wastewater treatment device. Background Technology

[0002] With rapid socio-economic development and accelerated urbanization, wastewater treatment has become a crucial issue in environmental protection. Constructed wetlands, a wastewater treatment technology based on the purification principles of natural wetlands, have received widespread attention in recent years. Through artificial construction and controlled monitoring, they form a complex ecosystem composed of permeable substrates, plants, water bodies, aerobic or anaerobic microbial communities, and animals. Wastewater undergoes multiple processes in constructed wetlands, including biodegradation, filtration, sedimentation, and adsorption, significantly reducing pollutants such as organic compounds, suspended solids, nitrogen compounds, phosphorus, and pathogens. This demonstrates advantages such as low investment, high efficiency, and good environmental benefits, making it particularly suitable for the wastewater treatment needs of small and medium-sized towns.

[0003] However, traditional constructed wetland technology has many limitations. Data from surveys of several operational constructed wetlands shows that nearly 50% of these systems experienced varying degrees of clogging after five years of operation. This clogging not only reduces the wetland's flow capacity, causing wastewater to accumulate on the surface and hindering oxygen diffusion into the substrate layer, thus weakening the wetland's pollutant removal efficiency, but also shortens the operational lifespan of the constructed wetland, especially vertical flow constructed wetlands, where clogging is particularly severe.

[0004] Furthermore, existing wetland wastewater treatment devices still face technical bottlenecks in practical applications. Although they can treat impurities in wastewater both in depth and in plane, due to the internal water flow characteristics, most debris and pollutants are easily carried away by the water flow, making them difficult to effectively intercept and remove. This problem directly affects the stability and compliance rate of effluent quality, and also increases the burden on subsequent treatment processes.

[0005] Therefore, there is an urgent need for a solution that can effectively treat wastewater from floating wetlands to overcome the shortcomings of existing technologies. Utility Model Content

[0006] The purpose of this invention is to provide a floating wetland wastewater treatment device to solve the technical problem in existing floating wetlands where the internal water flow characteristics make it difficult to effectively intercept and remove most debris and pollutants, as most of them are easily carried away by the water flow. The preferred technical solutions provided by this invention and their various technical effects are detailed below.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A floating wetland wastewater treatment device, comprising:

[0009] Floating base for supporting pollution-resistant aquatic plants;

[0010] The screening component, mounted on the floating base, can extend into the wetland wastewater to be treated to filter and screen the wastewater;

[0011] A rotating mechanism, installed on the floating base, connects the screening component and the floating base, and is used to adjust the position of the screening component on the floating base so that the part with the filtration function always faces the side facing the direction of wetland sewage flow.

[0012] Furthermore, the floating base is provided with a receiving trough and multiple connecting troughs. The receiving trough is used to place aquatic plants, and the multiple connecting troughs are located at the bottom of the receiving trough and are used to connect the receiving trough so as to introduce wetland sewage for treatment.

[0013] Furthermore, the screening assembly includes a screen plate and a receiving component. The screen plate is fixedly connected to the bottom of the floating base and is inclined. The receiving component is installed at the bottom of the screen plate to receive the impurities filtered out by the screen plate.

[0014] Furthermore, the receiving component is a receiving box, which is fixedly connected to the bottom surface of the sieve plate. The receiving box has a receiving cavity with an opening at the top for receiving the impurities filtered out by the sieve plate. The receiving box has through cavities on both sides, and a screen is installed on the through cavities to prevent the impurities inside the receiving box from flowing out.

[0015] Furthermore, the screen plate is provided with an aeration component, which extends along the side wall of the screen plate to increase the dissolved oxygen content in the water, promote the activity of aerobic microorganisms, and accelerate the degradation of pollutants.

[0016] Furthermore, the aeration assembly includes an aeration pipe, an air pump, and a solar panel. The solar panel is installed on top of the floating base to provide power to the air pump. The aeration pipe extends along the inclined direction of the side wall of the screen plate and has multiple air outlets, all facing the inclined surface of the screen plate, to clean the surface of the screen plate.

[0017] Furthermore, the aeration assembly also includes a controller, which is fixedly installed on the screen plate and electrically connected to the air pump and the solar panel respectively. The solar panel provides power and controls the air pump to work intermittently.

[0018] Furthermore, the rotating mechanism includes a positioning shaft and an auxiliary component. The positioning shaft is rotatably mounted at the center of the floating base, and the screen plate is fixedly connected to the bottom end of the positioning shaft. It can rotate around the positioning shaft to adjust the direction of the inclined surface of the screen plate to correspond to the direction of water flow. The auxiliary component is used to assist the screen plate in rotating.

[0019] Furthermore, the auxiliary component includes an auxiliary shaft and an adjusting plate. The auxiliary shaft is fixedly connected to the positioning shaft and its axial direction is parallel to the axial direction of the positioning shaft. The adjusting plate is rotatably connected to the auxiliary shaft. By rotating the adjusting plate, the side of the adjusting plate faces the direction of water flow. The auxiliary shaft drives the positioning shaft to rotate, thereby driving the screen plate to rotate in the correct direction.

[0020] Furthermore, the auxiliary component also includes a drive rod and a positioning rod. The positioning rod is fixedly installed on the top of the floating base plate, and the drive rod is fixedly connected to the top surface of the adjustment plate. An arc-shaped through groove is provided on the floating base plate to assist the drive rod in rotating around the auxiliary shaft. A pull rope is fixedly connected to the drive rod, and the pull rope passes around the positioning rod to pull the adjustment plate to swing at an angle.

[0021] The floating wetland wastewater treatment device provided by this utility model effectively solves the problem in existing technologies where the internal water flow characteristics of floating wetlands mean that most debris and pollutants are easily carried away by the water flow, making them difficult to effectively intercept and remove. The specific technical effects achieved are as follows:

[0022] Solving the congestion problem

[0023] This invention utilizes a screening component that extends into the interior of wetland wastewater for filtration and screening, effectively intercepting large particles of debris. If these debris were to directly enter the wetland substrate layer, they would gradually accumulate and cause blockages.

[0024] The rotating mechanism adjusts the position of the screening components so that the filtration section always faces the side in the direction of wetland wastewater flow. This ensures that the screening components continuously and effectively intercept pollutants, preventing them from penetrating deep into the wetland's internal matrix layer with the water flow, thereby reducing the risk of matrix layer clogging and extending the wetland's operational lifespan.

[0025] Improve the efficiency of pollutant interception and removal

[0026] To address the problem that most debris and pollutants in existing wetland wastewater treatment devices are easily carried away by the water flow, the screening component of this invention is specifically designed for filtration and screening. It can preliminarily intercept pollutants before the wastewater enters the main body of the wetland, preventing them from continuing to flow with the water.

[0027] Because the screening components can effectively intercept pollutants, more pollutants are treated at the front end of the wetland, rather than flowing into the wetland itself. This helps reduce the treatment burden inside the wetland, improves the overall efficiency of pollutant removal in the wetland system, and thus enhances the stability and compliance rate of the effluent quality.

[0028] Adapting to changes in sewage flow direction

[0029] In practical applications, the flow direction of wetland wastewater may change due to external environmental factors (such as wind force, adjustment of inlet position, etc.). The rotating mechanism in this invention can adjust the position of the screening component according to changes in the wastewater flow direction. This flexible adjustment capability ensures that the screening component is in the optimal interception position regardless of the direction from which the wastewater flows in, improving the adaptability of the device and further guaranteeing the effective interception and removal of pollutants.

[0030] In summary, this utility model, through its floating base supporting plants, screening components for filtration and screening, and rotating mechanism for adjusting the position of the screening components, effectively overcomes the shortcomings of existing technologies in terms of difficulty in intercepting and removing pollutants, and achieves technical effects such as reducing wetland clogging, improving pollutant removal efficiency, and adapting to changes in the direction of sewage flow. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model;

[0033] Figure 2 This is a partial structural schematic diagram provided by an embodiment of the present utility model;

[0034] Figure 3 This is a cross-sectional view of the auxiliary component structure provided in an embodiment of this utility model.

[0035] Explanation of reference numerals in the attached drawings: 100, floating base; 110, receiving tank; 120, connecting tank; 200, screening assembly; 210, sieve plate; 220, receiving box; 230, receiving cavity; 240, screen; 300, aeration assembly; 310, aeration pipe; 320, air pump; 330, solar panel; 400, rotating mechanism; 410, positioning shaft; 420, positioning rod; 430, arc-shaped groove; 440, adjusting plate; 450, drive rod; 460, auxiliary shaft. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] The following is in conjunction with the appendix Figure 1-3 To further describe this application in detail, embodiments of this application disclose a floating wetland wastewater treatment device.

[0040] Reference Figure 1 and Figure 2 As shown, a floating wetland wastewater treatment device includes a floating base 100 and a rotating mechanism 400.

[0041] The floating base 100 is placed in wetlands requiring wastewater treatment and can float on the wastewater surface. This design allows the entire device to automatically adjust its height according to changes in water level, preventing device failure due to water level fluctuations. The floating base 100 supports pollution-resistant aquatic plants whose root systems extend into the wastewater. These aquatic plants participate in the absorption and degradation of pollutants through their metabolic activities, such as absorbing nutrients like nitrogen and phosphorus from the wastewater, thereby purifying the water.

[0042] A screening component 200 is installed on the floating base 100, extending into the wetland wastewater to be treated for filtration and screening. This screening component 200 acts as a barrier, effectively intercepting large particles of debris, such as leaves and plastic fragments, preventing them from entering the wetland's internal matrix layer. This reduces the likelihood of wetland clogging at its source and significantly extends the wetland's operational lifespan. A rotating mechanism 400 connects the screening component 200 and the floating base 100, adjusting the position of the screening component 200 on the floating base 100 to ensure that the filtration section always faces the direction of wastewater flow. This dynamic adjustment mechanism allows the screening component 200 to react promptly to changes in water flow direction, ensuring effective filtration and screening regardless of the direction of wastewater inflow, thus improving the efficiency and stability of pollutant retention.

[0043] In addition, an aeration component 300 is also installed on the screening component 200. The aeration component 300 is used to increase the dissolved oxygen content of the water, providing sufficient oxygen for aquatic plants, promoting their growth and development, and thus enhancing their ability to absorb pollutants. At the same time, increasing the dissolved oxygen content of the water can also promote the activity of aerobic microorganisms. Aerobic microorganisms are an important force in the degradation of organic pollutants in wetland systems. A sufficient oxygen supply can accelerate the decomposition process of organic matter in wastewater by these microorganisms, further improving the wetland's pollutant removal efficiency.

[0044] Reference Figure 1 and Figure 2 As shown, the floating base 100 has multiple receiving slots 110, and each receiving slot 110 also has multiple corresponding connecting slots 120.

[0045] The container 110 is used to place aquatic plants, primarily selecting species with strong pollution tolerance and rapid growth, such as cattails and reeds. During their growth, these aquatic plants can absorb nutrients such as nitrogen and phosphorus from the wastewater through their physiological metabolic activities. This process not only helps reduce excess nutrients in the wastewater, thereby lowering the risk of eutrophication, but also converts these nutrients into their own biomass, achieving effective removal of pollutants.

[0046] The connecting channel 120 is formed on the bottom surface of the receiving tank 110 and is continuously connected. This design is ingenious, facilitating the introduction of wastewater from the wetland into the receiving tank 110, allowing the wastewater to fully contact the aquatic plants. Once the wastewater flows into the receiving tank 110, the roots of the aquatic plants can easily extend and penetrate into the wastewater. The roots of the aquatic plants play a crucial role in the wastewater; they act like a natural filter, intercepting suspended particulate matter in the wastewater. Simultaneously, the numerous microorganisms attached to the root surface form a biofilm, further decomposing organic pollutants in the wastewater. Furthermore, this deep penetration of the aquatic plant roots into the wastewater also helps increase the contact area between the wastewater and the plant roots, improving pollutant treatment efficiency and achieving better wastewater treatment results.

[0047] Reference Figure 1 and Figure 2 As shown, the screening assembly 200 includes a screen plate 210 and a receiving component. The screen plate 210 is fixedly installed at the bottom of the floating base 100 and has a cleaning and filtration function. The screen plate 210 is inclined, and the inclined surface on the larger side of the screen plate 210 forms a water-facing surface and a water-returning surface for direct contact with the water flow. When the water flow impacts the water-facing surface, large particles such as leaves and plastic fragments carried in the water are blocked on the water-facing side of the screen plate 210 under the action of the scouring force of the water flow. This process utilizes the physical interception principle of the screen plate 210 for materials of different sizes, which can effectively prevent these large particles from entering the subsequent processing flow and avoid adverse effects such as blockage or damage to subsequent equipment. Subsequently, the water flows along the surface of the screen plate 210 to the water-returning surface and finally flows out. During this process, due to the combined effect of gravity and the structure of the screen plate 210, most of the intercepted large particles will not be re-mixed into the water with the water flow, thus achieving a preliminary solid-liquid separation effect.

[0048] The receiving element is fixedly installed at the bottom of the sieve plate 210, and its main function is to collect large particles of debris filtered and intercepted by the sieve plate 210. This design allows for the centralized collection of intercepted debris, facilitating subsequent unified cleaning and processing. This not only helps maintain the cleanliness of the entire system and reduces debris residue within it, but also improves the system's operating efficiency and stability, avoiding performance degradation caused by debris accumulation. For example, if the receiving element does not collect these debris in a timely manner, the debris may accumulate below the sieve plate 210, affecting its normal operation and reducing its interception efficiency.

[0049] The receiving component is a receiving box 220 fixedly connected to the bottom of the sieve plate 210. The top of the receiving box 220 is fixedly connected to the sieve plate 210 near the middle. This connection method ensures the stability of the structure and does not interfere with the normal operation of the sieve plate 210.

[0050] The receiving box 220 has an opening located in the positioning receiving cavity 230. When large particles of debris flow downwards on the sieve plate 210, they can be contained by the receiving cavity 230. This design cleverly utilizes gravity, allowing large particles of debris intercepted by the sieve plate 210 to smoothly enter the receiving cavity 230, preventing them from being mixed into the water flow again, thereby effectively improving the solid-liquid separation effect.

[0051] The container 220 has a through cavity extending along its length, meaning that the two side walls of the container 220 are respectively opened through it. A screen 240 is installed on each through cavity to prevent debris from flowing out of the container 220.

[0052] The screen 240 plays a crucial role here. It not only prevents debris from the container 220 from flowing back into the water through the passageway, but also, due to its permeability, allows water to flow out through the screen 240 under the impact of the water flow. This helps lower the water level in the container 220, reducing the space occupied by water and thus increasing the effective volume of the container 220 for collecting debris.

[0053] Furthermore, the sidewalls correspond to the water-facing and water-repellent surfaces of the sieve plate 210, respectively. This layout makes full use of the hydrodynamic characteristics around the sieve plate 210, allowing the water to pass smoothly through the screen 240 after being intercepted by the sieve plate 210, thus ensuring the working efficiency and smoothness of the entire screening assembly 200.

[0054] Reference Figure 1 and Figure 2 As shown, refer to Figure 1 and Figure 2 As shown, the aeration assembly 300 includes an aeration pipe 310, an air pump 320, a controller, and a solar panel 330. The solar panel 330 is fixedly installed on top of a floating base 100, which floats precisely on the surface of the wastewater. This design makes full use of the water surface space, allowing the solar panel 330 to receive ample sunlight, thus enabling it to operate normally and provide power to the air pump 320 and the controller. By setting the power source to solar energy, energy-saving and environmentally friendly effects are achieved, reducing the consumption of traditional electrical resources.

[0055] Two aeration pipes 310 are provided, fixedly connected to the two side walls of the screen plate 210, and extending along the length (inclined direction) of the screen plate 210. This layout ensures that air bubbles are evenly distributed around the screen plate 210. An air pump 320 is also fixedly connected to the top of the screen plate 210 and connected to both aeration pipes 310, driving the aeration pipes to increase the dissolved oxygen content in the water. Increasing the dissolved oxygen content is a key step in wastewater treatment, which helps support the growth of aquatic plants on the floating base 100, as the roots of aquatic plants need to absorb oxygen from the water for respiration; it also promotes the activity of aerobic microorganisms and accelerates pollutant degradation, as aerobic microorganisms decompose organic matter more efficiently under aerobic conditions, thus effectively improving the overall efficiency of wastewater treatment.

[0056] The air outlets on the aeration pipe 310 all face the water-facing side of the inclined surface of the screen plate 210. This design not only increases the dissolved oxygen content of the water, but also cleans the water-facing surface of the screen plate 210 during the air exhaust process. When gas is ejected from the outlets, it generates an impact force that washes away some impurities adhering to the water-facing surface of the screen plate 210, preventing impurities from accumulating on the surface and affecting its normal screening function, thus ensuring the continuous and efficient operation of the entire device.

[0057] The controller is fixedly installed on the floating base 100 and electrically connected to the air pump 320 to control the intermittent operation of the air pump 320. By controlling the intermittent operation of the air pump 320 through the controller, the operating time and interval of the air pump 320 can be adjusted according to the actual wastewater treatment needs. This ensures that the dissolved oxygen content in the water is maintained within a suitable range, avoiding energy waste caused by over-aeration, and also extends the service life of the air pump 320, reducing equipment maintenance costs.

[0058] Reference Figure 1 and Figure 2 As shown, the rotating mechanism 400 includes a positioning shaft 410 and auxiliary components. The positioning shaft 410 is rotatably mounted at the center of the floating base 100 and extends through the floating base 100. This through-type design ensures the stability of the positioning shaft 410 on the floating base 100, while providing a reliable fulcrum for the angle adjustment of the screen plate 210.

[0059] The top center of the screen plate 210 is fixedly connected to the positioning shaft 410, allowing the screen plate 210 to rotate and adjust its angle via the positioning shaft 410. This function enables the screen plate 210 to flexibly adjust its angle according to factors such as the distribution of pollutants in the wastewater or the direction of water flow. For example, in the wastewater treatment process, when it is necessary to change the screening direction to more effectively intercept pollutants of different shapes or sizes, this can be achieved simply by rotating the screen plate 210, thereby improving the pollutant interception efficiency and achieving better wastewater treatment results.

[0060] The auxiliary components are installed on the floating base 100 to assist the rotation of the screen plate 210. This makes the rotation of the screen plate 210 smoother, helps to accurately control the angle of the screen plate 210, ensures the accuracy of the rotation angle of the screen plate 210, and ensures the stable operation of the sewage treatment process.

[0061] Reference Figure 1 and Figure 3 As shown, there are two sets of auxiliary components, which are symmetrically arranged with the positioning axis 410 as the center. This symmetrical layout helps to achieve a more balanced force distribution, so that they can achieve a better adjustment effect through their cooperation.

[0062] The auxiliary components include an auxiliary shaft 460, an adjusting plate 440, a drive rod 450, and a positioning rod 420. The auxiliary shaft 460 is fixedly connected to the side wall of the positioning shaft 410, and the axial extension direction of the auxiliary shaft 460 is parallel to the axial extension direction of the positioning shaft 410. This structural design ensures that the auxiliary shaft 460 can stably provide a rotation fulcrum for the adjusting plate 440 without interfering with the normal operation of the positioning shaft 410.

[0063] One end of the adjusting plate 440 is rotatably connected to the auxiliary shaft 460, and the other end extends radially along the positioning shaft 410. This allows the adjusting plate 440 to flexibly adjust its angle within a certain range, thereby affecting the positional relationship of the connected components. The drive rod 450 is fixedly connected to the top of the adjusting plate 440, while the positioning rod 420 is fixedly connected to the top of the floating base 100. The proper arrangement of these components is the basis for the coordinated operation of the entire auxiliary assembly.

[0064] When the inclined surface of the screen plate 210 faces the direction of water flow, the positioning rods 420 and drive rods 450 on the adjusting plate 440 of the two sets of auxiliary components are arranged at the 0 o'clock, 6 o'clock, 9 o'clock, and 12 o'clock positions, respectively. This specific arrangement is to make full use of the force of the water flow to adjust the angle of the screen plate 210 under the impact of the water flow, improve the water flow guidance, and reduce hydraulic loss.

[0065] The floating base 100 has an arc-shaped groove 430 for the drive rod 450 to slide. One end of the drive rod 450 is fixedly connected to a pull rope, and the other end of the pull rope passes around the positioning rod 420 to pull the adjusting plate 440 to swing at an angle. This ingenious design allows the angle of the adjusting plate 440 to be changed by simply pulling the rope, thereby further affecting the state of the screen plate 210.

[0066] When it is necessary to adjust the angle of the inclined surface of the screen plate 210, for example, when the water flow direction is perpendicular to the side wall of the inclined surface, pulling the rope causes the drive rod 450 to slide along the arc groove 430. The drive rod 450 also causes the adjusting plate 440 to rotate a certain angle around the auxiliary shaft 460, making the side wall of the adjusting plate 440 perpendicular to the water flow direction. This process utilizes the lever principle and the guiding effect of the arc groove 430, making the angle adjustment of the adjusting plate 440 more precise and stable.

[0067] The water flow impacts the side walls of the two regulating plates 440. Since the regulating plates 440 are connected to the auxiliary shaft 460, the auxiliary shaft 460 provides torque to the positioning shaft 410 in its circumferential direction, causing the positioning shaft 410 to rotate the screen plate 210. After the screen plate 210 has fully rotated, its inclined surface is aligned with the direction of water flow. This series of actions effectively utilizes the energy of the water flow, reduces the input of external power, improves the energy efficiency of the entire device, and allows for quick and accurate adjustment of the screen plate 210 angle to adapt to different water flow conditions, thereby improving the wastewater treatment effect.

[0068] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A floating wetland wastewater treatment device, characterized in that, include: A floating base (100) is used to support pollution-resistant aquatic plants; A screening assembly (200), mounted on the floating base (100), is capable of extending into the wetland wastewater to be treated to filter and screen the wastewater; A rotating mechanism (400) is installed on the floating base (100) and connects the screening component (200) and the floating base (100). It is used to adjust the position of the screening component (200) on the floating base (100) so that the part with the filtration function always faces the side of the wetland sewage flow direction.

2. The floating wetland wastewater treatment device according to claim 1, characterized in that, The floating base (100) is provided with a receiving trough (110) and a plurality of connecting troughs (120). The receiving trough (110) is used to place aquatic plants, and the plurality of connecting troughs (120) are located at the bottom of the receiving trough (110) and are used to connect the receiving trough (110) so as to introduce wetland sewage for treatment.

3. The floating wetland wastewater treatment device according to claim 1, characterized in that, The screening assembly (200) includes a screen plate (210) and a receiving member. The screen plate (210) is fixedly connected to the bottom of the floating base (100) and is inclined. The receiving member is installed at the bottom of the screen plate (210) and is used to receive the impurities filtered out by the screen plate (210).

4. A floating wetland wastewater treatment device according to claim 3, characterized in that, The container is a container box (220), which is fixedly connected to the bottom surface of the sieve plate (210). The container box (220) has a container cavity (230) with an opening at the top for collecting the impurities filtered out by the sieve plate (210). The container box (220) has through cavities on both sides, and a screen (240) is installed on the through cavity to prevent the impurities in the container box (220) from flowing out.

5. A floating wetland wastewater treatment device according to claim 3, characterized in that, An aeration component (300) is provided on the sieve plate (210). The aeration component (300) is provided along the side wall of the sieve plate (210) to increase the dissolved oxygen content in the water, promote the activity of aerobic microorganisms, and accelerate the degradation of pollutants.

6. A floating wetland wastewater treatment device according to claim 5, characterized in that, The aeration assembly (300) includes an aeration pipe (310), an air pump (320), and a solar panel (330). The solar panel (330) is mounted on the top of the floating base (100) to provide power to the air pump (320). The aeration pipe (310) extends along the inclined direction of the side wall of the screen plate (210). The aeration pipe (310) has multiple air outlets, all facing the inclined surface of the screen plate (210), to clean the surface of the screen plate (210).

7. A floating wetland wastewater treatment device according to claim 6, characterized in that, The aeration assembly (300) also includes a controller, which is fixedly installed on the sieve plate (210) and electrically connected to the air pump (320) and the solar panel (330), respectively. The solar panel (330) provides electrical energy and controls the air pump (320) to work intermittently.

8. A floating wetland wastewater treatment device according to claim 3, characterized in that, The rotating mechanism (400) includes a positioning shaft (410) and an auxiliary component. The positioning shaft (410) is rotatably mounted at the center of the floating base (100). The screen plate (210) is fixedly connected to the bottom end of the positioning shaft (410) and can rotate around the positioning shaft (410) to adjust the direction of the inclined surface of the screen plate (210) to correspond to the direction of water flow. The auxiliary component is used to assist the screen plate (210) in rotating.

9. A floating wetland wastewater treatment device according to claim 8, characterized in that, The auxiliary components include an auxiliary shaft (460) and an adjusting plate (440). The auxiliary shaft (460) is fixedly connected to the positioning shaft (410) and its axial direction is parallel to the axial direction of the positioning shaft (410). The adjusting plate (440) is rotatably connected to the auxiliary shaft (460). By rotating the adjusting plate (440), the side of the adjusting plate (440) faces the direction of water flow. The auxiliary shaft (460) drives the positioning shaft (410) to rotate, thereby driving the screen plate (210) to rotate in the correct direction.

10. A floating wetland wastewater treatment device according to claim 8, characterized in that, The auxiliary components also include a drive rod (450) and a positioning rod (420). The positioning rod (420) is fixedly installed on the top of the floating base plate, and the drive rod (450) is fixedly connected to the top surface of the adjustment plate (440). An arc-shaped through groove is provided on the floating base plate to assist the drive rod (450) in rotating around the auxiliary shaft (460). A pull rope is fixedly connected to the drive rod (450), and the pull rope passes around the positioning rod (420) to pull the adjustment plate (440) to swing at an angle.

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