Water body remediation floating island

Abstract

The utility model discloses a water body remediation floating island, which comprises a floating body layer and a plurality of adsorption purification layers, the plurality of adsorption purification layers are arranged on the floating body layer, the plurality of adsorption purification layers comprise a zeolite layer, an activated carbon layer and a microorganism fixing layer, the zeolite layer, the activated carbon layer and the microorganism fixing layer are overlapped, and the floating body layer and the plurality of adsorption purification layers form a floating island body. The surface of the floating island body is coated with a photocatalytic layer, a water flow channel is formed in the floating island body, an upper port of the water flow channel is located on the surface of the zeolite layer, and water flows out from the upper port of the water flow channel; compared with the prior art, the utility model has the beneficial effects that the floating body layer is made of degradable biochar and PLA (polylactic acid) materials, so that micro-plastic pollution is avoided, the photocatalytic layer can decompose organic pollutants in water under illumination, and meanwhile, the water quality purification efficiency is improved by combining the adsorption purification of the multiple adsorption purification layers.

Description

Technical Field

[0001] This utility model belongs to the field of water pollution control, specifically relating to a floating island for water body restoration, used to improve the water quality of eutrophic and polluted water bodies. Background Technology

[0002] Eutrophication and pollution of water bodies are becoming increasingly serious problems. Traditional water treatment methods, such as artificial aeration and chemical sedimentation, have problems such as high cost and secondary pollution. In contrast, the existing floating island technology relies on plants to absorb or microorganisms to degrade pollutants. For example, a landscape ecological floating island based on aquatic plant cultivation, with application publication number CN118684352A, purifies the water quality of the river and absorbs eutrophic substances in the water through aquatic plants.

[0003] However, relying on plants to absorb or microorganisms to degrade pollutants has problems such as low purification efficiency and seasonal limitations. In addition, most floating island materials are made of non-degradable plastic foam, which is prone to microplastic pollution and has a single purification function. Utility Model Content

[0004] The purpose of this invention is to provide a floating island for water body restoration that avoids microplastic pollution and is highly efficient and durable.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a floating island for water body restoration, comprising a floating body layer and a multi-layer adsorption and purification layer, wherein the multi-layer adsorption and purification layer is disposed on the floating body layer and comprises a zeolite layer, an activated carbon layer and a microbial immobilization layer, which are stacked together. The floating body layer and the multi-layer adsorption and purification layer constitute the floating island body. The surface of the floating island body is coated with a photocatalytic layer. A water flow channel is provided on the floating island body, and the upper port of the water flow channel is located on the surface of the zeolite layer, through which water flows out.

[0006] Furthermore, the floating layer utilizes biodegradable biochar and polylactic acid materials from existing technologies.

[0007] Furthermore, the zeolite layer, activated carbon layer, and microbial fixation layer are arranged sequentially from top to bottom, and the area of ​​each layer increases sequentially. The microbial fixation layer and the activated carbon layer are respectively provided with activated carbon reflux tank and fixation reflux tank.

[0008] Furthermore, the activated carbon reflux tank has a low-level side, which is connected to the fixed reflux tank through a guide channel.

[0009] Furthermore, the water flow channel extends longitudinally in a spiral and vertically penetrates the floating island body, with the interior of the water flow channel having a honeycomb structure.

[0010] Furthermore, the floating body layer is connected to a net frame, which encloses the area below the floating body layer. The net frame is covered with netting, and a sealing frame is installed below the net frame.

[0011] Furthermore, a drive shaft is connected to the center of the enclosure, which vertically penetrates the floating island body.

[0012] Furthermore, the enclosure frame is equipped with scraper strips, which are parallel to the drive shaft. The scraper strips contact the mesh on the enclosure frame, and the drive shaft drives the scraper strips to make a circular motion around the drive shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the floating layer uses biodegradable biochar and PLA (polylactic acid) materials to avoid microplastic pollution;

[0014] The photocatalytic layer can decompose organic pollutants in water under light, and at the same time, combined with the adsorption and purification of the multi-layer adsorption and purification layer, it can improve the water purification efficiency.

[0015] The multi-layer adsorption and purification layer can be modularly designed, and different functional layers can be replaced according to the water quality conditions;

[0016] By setting up a fencing frame, sealing frame, and scraper strips, solid pollutants can be prevented from adhering to the fencing frame, thereby avoiding affecting water flow. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the sealing frame structure of this utility model;

[0020] Figure 4 This is a schematic diagram showing the connection between the motor positioning seat and the cover of this utility model;

[0021] Among them, 1-floating body layer, 2-multi-layer adsorption and purification layer, 201-zeolite layer, 202-activated carbon layer, 203-microbial immobilization layer, 2021-activated carbon reflux tank, 2031-immobilized reflux tank, 3-solar photovoltaic panel, 4-water flow channel, 5-guide channel, 6-pull rod, 7-enclosure frame, 8-drive shaft, 9-drive motor, 10-sealing frame, 11-scraper, 12-motor positioning seat, 13-transmission gear set, 14-protrusion, 15-cap, 16-blade. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] See Figures 1 to 2 As shown, a floating island for water restoration includes a floating layer 1 with a density of 0.2-0.6 g / cm³. 3 To ensure long-term buoyancy, the floating layer 1 uses biodegradable biochar and PLA (polylactic acid) materials from existing technologies, combining stable buoyancy with environmental protection performance. It is biodegradable. A multi-layer adsorption and purification layer 2 is set on the floating layer 1. The multi-layer adsorption and purification layer 2 and the floating layer 1 form the floating island body. The surface of the floating island body is coated with a photocatalytic layer. The photocatalytic layer preferably uses the nano-TiO2-graphene photocatalytic layer from existing technologies. It can generate photogenerated carriers under light and initiate photocatalytic reactions. It also has excellent electrical, thermal and mechanical properties. In the photocatalytic layer, graphene can act as a carrier or electron transport medium, tightly combined with nano-TiO2 to form a synergistic composite structure. Ultimately, the photocatalytic layer can decompose organic pollutants (such as algae and oil) in water under light. When coating the nano-TiO2-graphene photocatalytic layer, a thermal spraying / plasma deposition method is used to improve durability and photocatalytic efficiency.

[0025] The multi-layer adsorption and purification layer 2 mainly comprises three functional layers. The first layer is a zeolite layer 201, which is used to adsorb ammonia nitrogen (NH4). + The first layer reduces eutrophication in the water body, while the second layer is an activated carbon layer 202. Activated carbon layer 202 is composed of activated carbon particles or powder, specifically wood-based activated carbon, coal-based activated carbon, and fruit shell activated carbon. Activated carbon layer 202 is used to adsorb heavy metal ions (such as Pb). 2+ Hg 2+The third layer is the microbial fixation layer 203, which is used to promote the degradation of organic matter in the water and enhance the self-purification ability. The three layers are arranged vertically in sequence, with the top layer being the zeolite layer 201, the middle layer being the activated carbon layer 202, and the bottom layer being the microbial fixation layer 203.

[0026] The microbial immobilization layer 203 uses porous ceramics, activated carbon, and other materials from existing technologies as carriers, and adsorbs microbial cells onto the carriers, which can effectively immobilize microorganisms and promote their degradation of pollutants.

[0027] A solar photovoltaic panel 3 is installed on the floating island body, and a longitudinally spiraling water flow channel 4 is set inside the floating island body. The water flow channel 4 has a honeycomb structure. The upper end of the water flow channel 4 is located on the surface of the zeolite layer 201, and the lower end of the water flow channel 4 is located on the bottom surface of the floating body layer 1. That is, the water flow channel 4 runs through the floating island body longitudinally. The water flow channel 4 is connected to a solar micro pump, which is connected to the solar photovoltaic panel. Water is introduced into the water flow channel 4 through the solar micro pump. Finally, the water flows out from the upper opening of the water flow channel 4 and flows back into the purification area, forming a water circulation flow and avoiding the formation of a still water area around the floating island. In addition, the connection method between the solar micro pump and the solar photovoltaic panel adopts a conventional structure in the prior art, which can be easily known by those skilled in the art and will not be described in detail here.

[0028] In this embodiment, the area of ​​the zeolite layer 201 is smaller than the area of ​​the activated carbon layer 202, and the area of ​​the activated carbon layer 202 is smaller than the area of ​​the microbial immobilization layer 203. That is, the areas of the three layers gradually increase from top to bottom. This results in uncovered exposed areas in both the microbial immobilization layer 203 and the activated carbon layer 202. Reflux channels are provided in both of these exposed areas. However, since the activated carbon layer 202 is higher than the microbial immobilization layer 203, there is a height difference between the reflux channels on both layers. These can be divided into an activated carbon reflux channel 2021 and a microbial immobilization reflux channel 2031. The activated carbon reflux channel 2021 has a higher elevation. The water has a high-level side and a low-level side, with the low-level side connected to the fixed return tank 2031 via the guide channel 5. When water flows out from the upper port of the water flow channel 4, it flows over the surface of the zeolite layer 201 and then falls into the activated carbon return tank 2021. Since the activated carbon return tank 2021 has a high-level side and a low-level side, the water in the activated carbon return tank 2021 will flow in an inclined direction, eventually flowing into the fixed return tank 2031 through the guide channel 5. This increases the time the water spends in the activated carbon layer 202 during the return process, thus increasing the adsorption of water by the activated carbon layer 202.

[0029] The aforementioned multi-layer adsorption and purification layer 2 can be modularly designed, meaning that the functional layers can be detachably connected. For example, longitudinal through holes are provided on the zeolite layer 201, activated carbon layer 202, and microbial immobilization layer 203. Grooves are provided on the upper surfaces of the activated carbon layer 202 and the microbial immobilization layer 203. After they are stacked, the bottom of the zeolite layer 201 is locked in the groove on the activated carbon layer 202, and the bottom of the activated carbon layer 202 is locked in the groove on the microbial immobilization layer 203. Similarly, longitudinal through holes are provided on the float layer 1. During overall assembly, the pull rod 6 passes through each functional layer, and then locking discs are screwed onto both ends of the pull rod 6 to form a tight fit between the functional layers. Different functional layers can be replaced according to the water quality. However, it should be noted that the water flow channel 4 is made of a flexible hose, meaning that the flexible hose needs to pass through different functional layers simultaneously, and activated carbon is filled inside the flexible hose.

[0030] See Figure 3 and Figure 4 As shown, since there may be solid waste in the water, which is suspended in the water, after the water is introduced into the water flow channel 4 by the solar micro-pump, the suspended solid waste may move towards the floating layer 1. This will eventually cause a large amount of waste or algae to cover the outer surface of the part of the floating layer 1 that is submerged, thus affecting the water entering the water flow channel 4. Therefore, a net frame 7 can be connected to the floating layer 1 of the floating island body. The net frame 7 is cylindrical and covered with netting, which encloses the area below the floating layer 1. A drive shaft 8 passes through the center of the floating island body, and a drive motor 9 is connected to the upper end of the drive shaft 8. The motor 9 is a DC brushed motor. The solar photovoltaic panel 3 is linearly connected to the drive motor 9, which can control the rotation of the transmission shaft 8. The lower end of the transmission shaft 8 is connected to the enclosure 10, which is also covered with a mesh. When the transmission shaft 8 rotates, it can drive the enclosure 10 to rotate. A scraper 11 is also fixed at the edge of the enclosure 10. The scraper 11 is parallel to the transmission shaft 8 and contacts the mesh on the enclosure frame 7. The drive motor 9 drives the enclosure 10 to rotate through the transmission shaft 8. At this time, the scraper 11 makes a circular motion around the transmission shaft 8. The scraper 11 removes the waste covering the enclosure frame 7 to avoid affecting the water flow to the water channel 4.

[0031] A motor positioning seat 12 is provided on the zeolite layer 201. A drive motor 9 is mounted on the motor positioning seat 12. The output shaft of the drive motor 9 is connected to the transmission shaft 8 through a transmission gear set 13. A shaft hole is provided on the motor positioning seat 12, through which the transmission shaft 8 passes. An annular protrusion 14 is provided on the motor positioning seat 12, with the center of the protrusion 14 located on the transmission shaft 8. The drive motor 9 is located within the area enclosed by the protrusion 14. A cover 15 is mated to the transmission shaft 8, with the lower end of the cover 15 fitting over the protrusion. On part 14, a space is formed between the cover 15 and the motor positioning seat 12. The transmission gear set 13 is located in the space. When the transmission shaft 8 rotates, it can drive the cover 15 to rotate. A blade 16 is fixed on the cover 15. The blade 16 is in linear contact with the upper surface of the zeolite layer 201. When the transmission shaft 8 rotates, it will drive the blade 16 to make a circular motion. The blade 16 wipes the surface of the zeolite layer 201, mainly to remove the impurities or algae attached to the surface of the zeolite layer 201 and increase the effect of the nano TiO2-graphene photocatalytic layer.

[0032] In the description of this utility model, it should 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A water body remediation floating island, characterized by: It includes a floating body layer (1) and a multi-layer adsorption and purification layer (2). The multi-layer adsorption and purification layer (2) is set on the floating body layer (1). The multi-layer adsorption and purification layer (2) includes a zeolite layer (201), an activated carbon layer (202), and a microbial immobilization layer (203), which are stacked together. The floating body layer (1) and the multi-layer adsorption and purification layer (2) form the floating island body. The surface of the floating island body is coated with a photocatalytic layer. A water flow channel (4) is provided on the floating island body. The upper port of the water flow channel (4) is located on the surface of the zeolite layer (201). Water flows out from the upper port of the water flow channel (4).

2. The water remediation floating island of claim 1, wherein: The zeolite layer (201), activated carbon layer (202) and microbial immobilization layer (203) are arranged sequentially from top to bottom, and the area of ​​the three increases sequentially. The microbial immobilization layer (203) and the activated carbon layer (202) are respectively provided with activated carbon reflux tank (2021) and fixed reflux tank (2031).

3. The water remediation floating island of claim 2, wherein: The activated carbon reflux tank (2021) has a low side, which is connected to the fixed reflux tank (2031) through a guide channel (5).

4. The water remediation floating island of claim 1, wherein: The water flow channel (4) extends longitudinally in a spiral and vertically penetrates the floating island body. The interior of the water flow channel (4) is honeycomb-shaped.

5. The water remediation floating island of claim 1, wherein: The floating body layer (1) is connected to a net frame (7), which encloses the area below the floating body layer (1). The net frame (7) is covered with a net sheet, and a sealing frame (10) is provided below the net frame (7).

6. The water remediation floating island of claim 5, wherein: The center of the enclosure (10) is connected to a drive shaft (8), which vertically penetrates the floating island body.

7. The water remediation floating island of claim 6, wherein: The enclosure frame (10) is provided with a scraper (11), which is parallel to the drive shaft (8). The scraper (11) contacts the mesh on the enclosure frame (7), and the drive shaft (8) drives the scraper (11) to make a circular motion around the drive shaft (8).

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