Anti-clogging floating island system

Abstract

The application discloses an anti-clogging floating island system which comprises a floating island platform, a water distribution plate and an air-lifting assembly. The guide groove has a first end far away from the floating island platform and a second end close to the floating island platform. The inner diameter of the guide groove gradually decreases from the first end to the second end. In use, the anti-clogging floating island system is arranged in a water area, the floating island platform is used for planting aquatic plants, and an air flow is injected into the water area below the floating island platform through the aeration head. Under the action of the air flow, the water in the water area is lifted into the water distribution plate by the air-lifting assembly and then supplied to the plants on the floating island platform through the water distribution holes on the water distribution plate. The water flow has an accelerating trend in the process of entering the water distribution plate, and the algae and sediments are automatically removed, so that the anti-clogging effect is enhanced and the maintenance cycle is prolonged.

Description

Technical Field

[0001] This application relates to the fields of ecological engineering and water treatment technology, and in particular to an anti-clogging floating island system. Background Technology

[0002] Traditional floating island technology faces severe clogging problems in practical applications, significantly impacting the long-term operational stability of the system. Due to excessive growth of plant roots and biofilms, as well as the continuous accumulation of suspended solids and algae in the water, the channels and pores of traditional floating islands are highly susceptible to physical clogging. Especially in high-turbidity or eutrophic waters, a significant decrease in flux and a reduction in hydraulic retention time of over 40% occur after 30-60 days of system operation, leading to a substantial decrease in purification efficiency. Existing anti-clogging technologies mainly rely on manual cleaning or backwashing, which is not only costly to maintain but also disrupts the established ecosystem. While some improved floating islands employ intermittent aeration or mechanical scraping as anti-clogging measures, these methods have significant drawbacks: intermittent aeration causes dissolved oxygen fluctuations, affecting the stability of the microbial community; mechanical scraping devices are often structurally complex and prone to failure during long-term operation. More seriously, traditional straight-pipe airlift devices, due to their uniform pipe diameter, cannot generate sufficient shear force during water flow lifting, making it difficult to effectively prevent the deposition of biofilm and particulate matter, ultimately leading to system performance degradation. These technical shortcomings have led to challenges for existing floating island systems in wastewater treatment applications, including short operating cycles, high maintenance frequency, and high overall costs. Particularly in the treatment of highly polluted water bodies such as municipal sewage and aquaculture wastewater, clogging has become a key bottleneck restricting the widespread adoption of floating island technology. Therefore, developing a highly efficient, anti-clogging floating island system with self-cleaning capabilities and long-term stable operation is of great value in promoting the practical application of ecological governance technologies. Utility Model Content

[0003] The present invention introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This part of the present invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] In view of this, embodiments of this application propose an anti-clogging floating island system, comprising:

[0006] Floating island platform;

[0007] A water distribution plate is connected to the floating island platform, and the water distribution plate has multiple water distribution holes;

[0008] An airlift assembly, comprising a guide channel and an aeration head, wherein the guide channel is connected to the water distribution plate and the aeration head passes through the guide channel;

[0009] The end of the flow channel furthest from the floating island platform is the first end, and the end closest to the floating island platform is the second end. The inner diameter of the flow channel gradually decreases in the direction from the first end to the second end.

[0010] In one feasible implementation, the flow channel includes:

[0011] Multiple flow guide sections are connected by a transition section between adjacent flow guide sections, and the angle of inclination of the transition section relative to the aeration head is less than or equal to 18°.

[0012] In one feasible implementation, the guide channel is a spiral guide channel with a spiral angle less than or equal to 45° and a channel depth of 5%-8% of the pipe diameter of the airlift component;

[0013] The diameter of the first end of the guide channel is greater than or equal to 90 mm, and the diameter of the second end is less than or equal to 37.5 mm.

[0014] In one feasible implementation, the guide channel is made of fiberglass material, and the inner wall of the guide channel is provided with an anti-fouling coating.

[0015] In one feasible implementation, there are multiple air-lifting components, which are arranged in a ring at the bottom of the water distribution plate.

[0016] In one feasible embodiment, the aeration head has multiple aeration holes with a diameter of 0.1 mm to 0.5 mm and a hole density of 25 holes / cm². 2 .

[0017] In one feasible implementation, the floating island platform includes:

[0018] Support structure;

[0019] A foam layer is disposed on the support;

[0020] A filler layer, which is located above the foam layer;

[0021] The water distribution plate is located between the foam layer and the filling layer.

[0022] In one feasible embodiment, the filling layer is made of aerated concrete material, and the porosity of the filling layer is 50%-70%.

[0023] In one feasible implementation, the anti-clogging floating island system further includes:

[0024] An air pump and an air pipe, wherein the air pump is connected to the aeration head via the air pipe;

[0025] A power supply component, which is connected to the air pump.

[0026] In one feasible implementation, the power supply component includes:

[0027] A solar power module and a storage battery, wherein the solar power module is connected to the storage battery and the storage battery is connected to the air pump.

[0028] Compared with the prior art, the present invention has at least the following beneficial effects:

[0029] The anti-clogging floating island system provided in this application includes a floating island platform, a water distribution plate, and an airlift component. The end of the guide channel furthest from the floating island platform is the first end, and the end closest to the floating island platform is the second end. The inner diameter of the guide channel gradually decreases from the first end to the second end. In use, the anti-clogging floating island system is placed in a water area. Aquatic plants are planted on the floating island platform. Airflow can be injected into the water area below the floating island platform through the aeration head. Under the action of the airflow, the water in the water area is lifted by the airlift component into the water distribution plate, and then supplied to the plants on the floating island platform through the water distribution holes on the water distribution plate. The guide channel has a trend of being wider at the bottom and narrower at the top, and coarser at the bottom and thinner at the top. As the water flows into the water distribution plate, the water flow can accelerate, automatically removing algae and sediment, enhancing the anti-clogging effect and extending the maintenance cycle.

[0030] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0032] Figure 1 A schematic structural diagram of the hidden portion of the filling layer of an anti-clogging floating island system according to an embodiment of this application;

[0033] Figure 2 for Figure 1 A partially enlarged schematic diagram of the central air pump;

[0034] Figure 3 A schematic structural diagram of an anti-clogging floating island system according to an embodiment of this application from another angle;

[0035] Figure 4 for Figure 3 A partially enlarged schematic diagram of the air pump.

[0036] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0037] 110 Floating Island Platform, 120 Water Distribution Plate, 130 Air Lifting Components, 140 Air Pump, 150 Air Pipes, 160 Power Supply Components;

[0038] 111 Support structure, 112 Foam layer, 113 Filling layer;

[0039] 121 water distribution holes;

[0040] 131 Flow guide channel, 132 Aeration head, 1311 Flow guide section, 1312 Transition section. Detailed Implementation

[0041] The following description provides numerous specific details to offer a more thorough understanding of the technical solutions provided by this invention. However, it will be apparent to those skilled in the art that the technical solutions provided by this invention can be implemented without one or more of these details.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0043] Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0044] like Figures 1 to 4As shown in the figure, this application embodiment proposes an anti-clogging floating island system, including: a floating island platform 110; a water distribution plate 120 connected to the floating island platform 110, the water distribution plate 120 having a plurality of water distribution holes 121; and an air lift assembly 130, the air lift assembly 130 including a guide channel 131 and an aeration head 132, the guide channel 131 being connected to the water distribution plate 120, and the aeration head 132 passing through the guide channel 131; wherein, the end of the guide channel 131 away from the floating island platform 110 is the first end, and the end closer to the floating island platform 110 is the second end, and the inner diameter of the guide channel 131 gradually decreases in the direction from the first end to the second end.

[0045] The anti-clogging floating island system provided in this application embodiment includes a floating island platform 110, a water distribution plate 120, and an airlift component 130. The end of the guide channel 131 furthest from the floating island platform 110 is the first end, and the end closest to the floating island platform 110 is the second end. The inner diameter of the guide channel 131 gradually decreases from the first end to the second end. In use, the anti-clogging floating island system is set in a water area. Aquatic plants are planted on the floating island platform 110. Airflow can be injected into the water area below the floating island platform 110 through the aeration head 132. Under the action of the airflow, the water in the water area is lifted by the airlift component 130 into the water distribution plate 120, and then supplied to the plants on the floating island platform 110 through the water distribution holes 121 on the water distribution plate 120. The guide channel 131 has a trend of being wider at the bottom and narrower at the top, and coarser at the bottom and thinner at the top. As the water flows into the water distribution plate 120, the water flow can accelerate, automatically removing algae and sediment, enhancing the anti-clogging effect and extending the maintenance cycle.

[0046] It is understandable that a water distribution trough can be provided inside the water distribution plate 120, and the water distribution trough is connected to the water distribution hole 121 for water distribution.

[0047] like Figure 3 and Figure 4 As shown, in one feasible embodiment, the guide channel 131 includes: a plurality of guide sections 1311, adjacent guide sections 1311 are connected by a transition section 1312, and the inclination angle of the transition section 1312 relative to the aeration head 132 is less than or equal to 18°.

[0048] In this technical solution, a style of guide channel 131 is further provided. Guide channel 131 may include multiple guide sections 1311. Two adjacent guide sections 1311 are connected by a transition part 1312. Based on this, the inner diameter of guide channel 131 gradually decreases in the direction from the first end to the second end, which facilitates the production and processing of guide channel 131.

[0049] In this technical solution, the angle of inclination of the transition section 1312 relative to the aeration head 132 is less than or equal to 18°. This setting can control the amplitude of the gradual change in the inner diameter of the guide channel 131, ensuring that the water flow can enter the water distribution plate 120 in an accelerating trend. This can enable the anti-clogging floating island system to have self-cleaning ability and reduce the probability of clogging.

[0050] like Figure 3 and Figure 4 As shown, in one feasible embodiment, the guide channel 131 is a spiral guide channel 131 with a spiral angle less than or equal to 45° and a channel depth of 5%-8% of the pipe diameter of the air lift assembly 130; the diameter of the first end of the guide channel 131 is greater than or equal to 90 mm and the diameter of the second end is less than or equal to 37.5 mm.

[0051] In this technical solution, a spiral guide channel 131 is further provided. Based on this, the rising water flow can form a rotating turbulent flow, which enhances the wall shear force and is more conducive to the automatic removal of algae and sediments, enhances the anti-clogging effect, and extends the maintenance cycle.

[0052] The airlift effect provided in this embodiment is generated by the bottom airlift component 130, which, together with the spiral guide channel 131, forms an enhanced water flow circulation. The tapered guide channel 131 is designed to enhance airlift efficiency and reduce energy consumption, while utilizing hydraulic shear force to prevent clogging, making it particularly suitable for wastewater purification and ecological restoration under conditions of high suspended solids.

[0053] In this technical solution, the helix angle is less than or equal to 45°, and the groove depth is 5%-8% of the pipe diameter of the air-lift component 130. The diameter of the first end of the guide groove 131 is greater than or equal to 90mm, and the diameter of the second end is less than or equal to 37.5mm. It adopts a three-stage tapered tapered tube design to form an accelerating flow field, so that the water flow velocity increases by 20-40% step by step along the upward direction of the pipe body. The helical guide groove 131 is set on the inner side of the pipe wall to generate a swirling effect, which enhances the shearing effect on the pipe wall. At the same time, the helical guide groove 131 can force the water flow to form a rotating turbulent flow, so that the bubbles rise in a spiral, and the gas-liquid contact time is extended. Compared with the traditional straight pipe, the bubble residence time is extended and the oxygen utilization rate is improved.

[0054] In one feasible implementation, the flow channel 131 is made of fiberglass, and its inner wall is provided with an anti-fouling coating. This design can further improve the corrosion resistance of the flow channel 131 and extend the service life of the anti-clogging floating island system.

[0055] In some examples, the materials used to prepare the antifouling coating may include fluorine-based nanomaterials, silicon-based nanomaterials, etc.

[0056] In one feasible implementation, there are multiple air-lifting components 130, which are arranged in a ring at the bottom of the water distribution plate 120.

[0057] In this technical solution, the number of air-lifting components 130 is further provided. There are multiple air-lifting components 130, which are arranged in a ring at the bottom of the water distribution plate 120. Based on this, multi-point water lifting can be realized, avoiding the flow blind zone caused by single-point water lifting, so that the floating island platform 110 can receive a more uniform water supply.

[0058] In one feasible embodiment, the aeration head 132 has multiple aeration holes with a diameter of 0.1 mm to 0.5 mm and a hole density of 25 holes / cm². 2 This configuration ensures that the aeration head 132 has sufficient aeration effect, thereby ensuring the formation of the water flow field and further reducing the probability of clogging of the airlift component 130.

[0059] like Figure 1 and Figure 2 As shown, in one feasible embodiment, the floating island platform 110 includes: a support body 111; a foam layer 112 disposed on the support body 111; a filling layer 113 located above the foam layer 112; wherein, a water distribution plate is located between the foam layer 112 and the filling layer 113.

[0060] In this technical solution, the structural composition of the floating island platform 110 is further provided. The floating island platform 110 may include a support body 111, a foam layer 112, and a filling layer 113. The shape of the floating island platform 110 can be controlled by the setting of the support body 111, and an installation position is provided for the foam layer 112. The overall density of the floating island platform 110 can be reduced by the setting of the foam layer 112, so that the anti-clogging floating island system can be suspended on the water surface. The filling layer 113 can provide space for plant growth, so that the anti-clogging floating island system can play a role in purifying water.

[0061] like Figure 1 and Figure 2 As shown, in one feasible embodiment, the filling layer 113 is made of aerated concrete material, and the porosity of the filling layer 113 is 50%-70%.

[0062] In this technical solution, a material for preparing the filling layer 113 is further provided. The filling layer 113 is made of aerated concrete material and has a porosity of 50%-70%. Based on this, on the one hand, the mechanical strength of the filling layer 113 is guaranteed; on the other hand, it is ensured that the filling layer 113 has enough pores to facilitate the development of plant roots.

[0063] like Figures 1 to 4 As shown, in one feasible embodiment, the anti-clogging floating island system further includes: an air pump 140 and an air pipe 150, the air pump 140 being connected to the aeration head 132 via the air pipe 150; and a power supply component 160 being connected to the air pump 140.

[0064] In this technical solution, the structural composition of the anti-clogging floating island system is further provided. The anti-clogging floating island system may also include an air pump 140 and an air pipe 150. By turning on the air pump 140, the air pump 140 can deliver airflow to the aeration head 132 through the air pipe 150, while the power supply component 160 is used as the power source for the air pump 140.

[0065] In one feasible implementation, the power supply component 160 includes a solar power module and a battery, the solar power module being connected to the battery and the battery being connected to the air pump 140.

[0066] In this technical solution, the structure of the power supply component 160 is further provided. The power supply component 160 may include a solar power supply module and a storage battery. The solar power supply module can charge the storage battery, and the storage battery can supply power to the air pump 140, thereby reducing the maintenance frequency of the anti-clogging floating island system.

[0067] Example

[0068] like Figures 1 to 4 As shown, the anti-clogging floating island system provided in this application embodiment includes four core components: a floating island platform 110, an airlift component 130, an air pump 140, and a power supply component 160. The floating island platform 110 uses a high-density polyethylene foam layer 112 as the float, and planting troughs are set on its surface for planting aquatic plants such as reeds and cattails. The platform is filled with filter media to enhance pollutant adsorption capacity. The airlift component 130 is made of fiberglass, manufactured according to a design parameter of 18° contraction angle, with a bottom diameter of 90mm, a top diameter of 37.0mm, a pipe length of 1.2m, and a guide groove 131 with a helix angle of 45°, a groove depth of 4mm, and a pitch of 40mm processed on its inner wall. The aeration head 132 is made of corrosion-resistant rubber material, with a pore size of 0.3mm and a pore density of 25 pores / cm³. 2The air pump 140 is fixed to the bottom of the guide channel 131 via a flange connection; the air pump 140 is an oil-free scroll type with a rated power of 80W and a maximum air supply of 15L / min, and is connected to the aeration head 132 via an 8mm inner diameter PE air pipe 150; the power supply component 160 consists of two 100W monocrystalline silicon photovoltaic panels as solar power supply modules and a 12V / 100Ah gel battery as a storage battery, which can meet the system's operation requirements for three consecutive cloudy and rainy days. In a city landscape water treatment project, the system is equipped with four sets of airlift components 130, evenly distributed in a ring at the bottom of the floating island platform 110. During operation, the air pump 140 supplies air to the aeration heads 132 at a flow rate of 12L / min. The resulting microbubble clusters form a rotating upward flow under the action of the spiral guide channel 131, with a bubble residence time of up to 8 seconds. After the water is lifted from the bottom to the floating island water distribution channel, it is evenly diffused through the filtration effect of the aerated concrete packing, forming a purification area with a diameter of approximately 8m. After 30 days of operation, monitoring data showed that the dissolved oxygen in the water increased from 1.6mg / L to 5.4mg / L, and the ammonia nitrogen removal rate reached 78%. In terms of system maintenance, the wear condition of the guide channel 131 needs to be checked monthly, and the aeration heads 132 need to be soaked and cleaned with a 5% citric acid solution every quarter. During winter operation, the air flow rate should be appropriately reduced to 8L / min and antifreeze measures should be taken.

[0069] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be 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.

[0070] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0071] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An anti-clogging floating island system, characterized in that, include: Floating island platform; A water distribution plate is connected to the floating island platform, and the water distribution plate has multiple water distribution holes; An airlift assembly, comprising a guide channel and an aeration head, wherein the guide channel is connected to the water distribution plate and the aeration head passes through the guide channel; The end of the flow channel furthest from the floating island platform is the first end, and the end closest to the floating island platform is the second end. The inner diameter of the flow channel gradually decreases in the direction from the first end to the second end.

2. The anti-clogging floating island system according to claim 1, characterized in that, The flow guide groove includes: Multiple flow guide sections are connected by a transition section between adjacent flow guide sections, and the angle of inclination of the transition section relative to the aeration head is less than or equal to 18°.

3. The anti-clogging floating island system according to claim 2, characterized in that, The guide channel is a spiral guide channel with a spiral angle of less than or equal to 45° and a channel depth of 5%-8% of the pipe diameter of the air lift assembly; The diameter of the first end of the guide channel is greater than or equal to 90 mm, and the diameter of the second end is less than or equal to 37.5 mm.

4. The anti-clogging floating island system according to claim 2, characterized in that, The flow channel is made of fiberglass, and the inner wall of the flow channel is provided with an anti-fouling coating.

5. The anti-clogging floating island system according to claim 1, characterized in that, There are multiple air-lifting components, which are arranged in a ring at the bottom of the water distribution plate.

6. The anti-clogging floating island system according to claim 1, characterized in that, The aeration head has multiple aeration holes with a diameter of 0.1 mm to 0.5 mm and a hole density of 25 holes / cm². 2 .

7. The clog-resistant floating island system of any one of claims 1 to 6, wherein, The floating island platform includes: Support structure; A foam layer is disposed on the support; A filler layer, which is located above the foam layer; The water distribution plate is located between the foam layer and the filling layer.

8. The anti-clogging floating island system according to claim 7, characterized in that, The filling layer is made of aerated concrete material, and the porosity of the filling layer is 50%-70%.

9. The anti-clogging floating island system according to any one of claims 1 to 6, characterized in that, Also includes: An air pump and an air pipe, wherein the air pump is connected to the aeration head via the air pipe; A power supply component, which is connected to the air pump.

10. The clog-resistant floating island system of claim 9, wherein, The power supply component includes: A solar power module and a storage battery, wherein the solar power module is connected to the storage battery and the storage battery is connected to the air pump.

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