Estuary ecological isolation water purification system

Abstract

The invention relates to the technical field of water treatment, in particular to an estuary ecological isolation water purification system. The system comprises a front filtering module and a biological purification module which are sequentially arranged in the water flow direction, the front filtering module is composed of a biological intercepting net, an underwater fixing piece and a suspension piece, the biological purification module comprises a plurality of rows of biological carrier sets with the bottoms provided with ecological elastic filler, and submerged vegetation is arranged on the two sides of the biological purification module. Through the structural design, the water quality purification efficiency is effectively improved, meanwhile, the stability and maintenance convenience of the system are enhanced, and the estuary water environment quality is remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of ecological restoration, and in particular to an estuary ecological isolation and water purification system. Background Art

[0002] With the rapid development of urbanization and industrialization, a large amount of sewage is discharged directly into rivers without treatment, which has led to serious deterioration of water quality and ecological environment damage. The wetlands around the river have shrunk significantly and the biological habitat has been seriously degraded.

[0003] From the analysis of land use types, farmland and fish ponds along the river have an absolute advantage in terms of land area, while the area of ​​forest land, green land and wetland is relatively small. Due to the direct discharge of a large amount of tail water from farmlands and fish ponds in the surrounding areas or the indirect flow of tail water into the main river through tributary estuaries, the water quality in the main river is polluted and the water body is slightly eutrophic, causing the ecosystem within the main river to continue to degrade, submerged plants to be greatly reduced, zooplankton to be miniaturized, fish species to decrease, and biodiversity to decrease.

[0004] Therefore, how to efficiently, economically and sustainably intercept sewage at tributary estuaries has become a key issue that needs to be addressed urgently. Summary of the invention

[0005] In order to intercept pollution at estuaries and improve water quality, the present application provides an estuary ecological isolation water purification system.

[0006] This application provides an estuary ecological isolation water purification system, which adopts the following technical solutions: An estuary ecological isolation water purification system, comprising an interception module and a biological purification module arranged in sequence along the water flow direction, wherein submerged vegetation is arranged on both sides of the biological purification module; The interception module includes a biological barrier, an underwater fixing member arranged at the bottom of the biological barrier, and a suspension member arranged at the top of the biological barrier; The biological purification module comprises a plurality of carrier groups arranged at intervals perpendicular to the water flow direction, the carrier group comprises a plurality of biological carriers arranged at intervals along the water flow direction, and the biological carrier comprises a carrier frame and a plurality of ecological elastic fillers arranged in the carrier frame.

[0007] By adopting the above technical scheme, the biological barrier can prevent the accidental floating debris and pollutants from the upstream of the branch estuary from entering the main river waters, prevent the destruction of the reconstructed water ecosystem by herbivorous fish in the peripheral water bodies, and prevent the escape of large aquatic animals in the main river. The design of the suspended parts ensures the effective deployment of the biological barrier, thereby achieving effective interception of foreign pollutants and organisms. In addition, the biological barrier can be used as a good biological carrier for the flocculation and growth of microbial communities in rivers, lakes and wetlands to form a biofilm. When the polluted water passes through the biofilm, the sewage and the bacterial flocs attached to the carrier begin to contact. Due to the action of bacteria and extracellular polymers, the surface of the bacterial flocs flocculates or adsorbs organic matter in the water, forming a dynamic balance with the concentration of organic matter in the bacterial flocs, so that the surface of the bacterial flocs has a large number of active bacteria and a high concentration of organic matter, which becomes a suitable place for bacterial reproduction. Due to this favorable condition, the bacteria on the surface of the bacterial flocs multiply rapidly and quickly consume the organic matter in the water, thereby purifying the water quality. The eco-elastic filler in the carrier group not only increases the attachment area of ​​the biofilm, but also promotes the decomposition of organic matter in the water, improving the water purification effect. The arrangement of submerged vegetation further enhances the self-purification ability of the water body, improves the transparency of the water body and the quality of the water environment by absorbing nutrients, inhibiting the resuspension of suspended matter, and releasing oxygen, which is less likely to cause pollution to the main river waters.

[0008] Optionally, the underwater fixing member includes an underwater cross beam fixed to a plurality of fixing piles on the underwater cross beam, the bottom of the biological barrier is connected to the underwater cross beam, and the side surfaces of the biological barrier are connected to the fixing piles.

[0009] By adopting the above technical solution, the biological barrier can be stably installed underwater, effectively intercepting pollutants and organisms, preventing pollutants from entering the main river waters, and preventing large aquatic animals from escaping from the main river waters. The design of underwater beams and fixed piles not only enhances the stability of the system, but also reduces the impact on the normal flood discharge and drainage functions of the river.

[0010] Optionally, the suspension element includes a floating belt and a plurality of floating balls fixed on the floating belt.

[0011] By adopting the above technical solution, a floating belt and a suspension composed of multiple floating balls are set on the top of the bio-barrier, ensuring that the bio-barrier can stably maintain a set height in the water, and will neither sink due to the impact of water flow nor float excessively due to the influence of wind and waves. The design of the suspension also facilitates subsequent maintenance and repair work, reducing the difficulty of operation.

[0012] Optionally, the carrier frame includes a frame body and an upper connecting rod and a lower connecting rod fixed to both ends of the frame body, and the ecological elastic filler includes carbon fiber grass; The carbon fiber grass is connected between the upper connecting rod and the lower connecting rod, and a plurality of carbon fiber grasses are arranged at intervals along the length direction of the upper connecting rod.

[0013] By adopting the above technical solution, the effective construction of the biological carrier is achieved, ensuring the stability and reliability of the biological carrier structure. As an ecological elastic filler, carbon fiber grass can quickly adsorb and reproduce microorganisms, enhance the self-purification ability of water bodies, and improve the water purification efficiency. Multiple carbon fiber grasses are arranged at intervals along the length of the upper connecting rod, which increases the specific surface area of ​​the biological carrier and increases the amount of microbial attachment, thereby enhancing the biodegradation effect and further improving the water purification effect.

[0014] Optionally, the submerged vegetation is located at a water depth of 0.5-2.0 m.

[0015] By adopting the above technical solution, submerged vegetation is located at a depth of 0.5-2.0m underwater, which can make full use of the light conditions of the water layer to promote the photosynthesis of submerged vegetation, thereby increasing its growth rate and purification efficiency. At the same time, submerged vegetation in the water layer can more effectively absorb and remove nutrients in the water, such as nitrogen and phosphorus, inhibit excessive algae reproduction, and maintain the clarity of the water body. In addition, submerged vegetation can also fix sediments through its roots, reduce the resuspension of suspended matter, further improve water transparency, and improve water quality.

[0016] Optionally, an anchor ring is fixed on the underwater beam, a connecting rope is fixed on the bottom of the biological barrier net, and the connecting rope is fixed on the anchor ring; a sliding buckle is connected to the side of the biological barrier net, and a plurality of the sliding buckles are arranged at intervals along the length direction of the fixed pile, and the sliding buckle is sleeved outside the fixed pile.

[0017] By adopting the above technical solution, the stability of the bio-barrier can be enhanced to ensure that it will not deviate or fall off in the water, thereby effectively intercepting foreign pollutants and preventing them from entering the estuary waters. At the same time, the setting of the connecting rope and anchor ring realizes the detachable connection between the bottom of the bio-barrier and the underwater crossbeam, and the design of the sliding buckle makes the installation of the bio-barrier on the fixed pile more convenient, improving the construction efficiency.

[0018] Optionally, a cleaning device is provided between two adjacent upper connecting rods, the cleaning device comprising a cleaning brush bar and a driving assembly, the cleaning brush bar is slidably provided between the two upper connecting rods, and the driving assembly is used to drive the cleaning brush bar to slide.

[0019] By adopting the above technical solution, the carbon fiber grass on the biological carrier will reduce the purification efficiency due to excessive growth of algae or blockage of other sediments after long-term use. The cleaning device set between two adjacent upper connecting rods can effectively remove algae and other impurities on the carbon fiber grass and keep the surface of the biological carrier clean, thereby ensuring the effective attachment of the ecological elastic filler and the growth environment of microorganisms. The drive component drives the cleaning brush bar to slide, realizing the automated cleaning process, reducing the manual maintenance cost, and improving the operating efficiency and stability of the system.

[0020] Optionally, it further comprises a first support and a second support arranged at intervals in the vertical direction, and the driving assembly comprises a driving wheel, a driven wheel, a transmission belt and a driving source; The driving wheel is rotatably connected to the first support, the driven wheel is rotatably connected to the second support, the transmission belt is sleeved outside the driven wheel and the driving wheel, the cleaning brush strip is fixed on the transmission belt, and the driving source is used to drive the driving wheel to rotate.

[0021] By adopting the above technical solution, adding the first support and the driving assembly, the cleaning brush strip can be effectively driven to slide between the carrier groups, thereby achieving regular cleaning of the surface of the biological carrier and avoiding the decrease in water flow due to biofilm accumulation. In addition, the design of the cleaning device will not damage the biological carrier and the ecological balance inside it, ensuring the long-term stable operation of the system.

[0022] Optionally, the cleaning brush bar is connected with an algae collecting hook.

[0023] By adopting the above technical solution, when the cleaning brush strip is cleaning the carbon fiber grass, the algae hook connected to the cleaning brush strip can effectively hook and carry the algae on the surface and surrounding of the biological carrier, ensuring the cleanliness of the biological carrier, thereby maintaining the efficient purification ability of the biological carrier. This helps to improve the long-term operation stability and purification efficiency of the entire system.

[0024] In summary, the present application includes at least one of the following beneficial effects: 1. Biological barriers can prevent accidental floating debris and pollutants from the upstream of the tributary estuary from entering the main river waters, prevent herbivorous fish in the peripheral waters from destroying the reconstructed aquatic ecosystem, and prevent the escape of large aquatic animals in the main river. Biological barriers can be located underwater when arranged, without affecting the landscape at the tributary estuary. Moreover, biological barriers are permeable and do not affect the normal flood discharge and drainage functions of the river; 2. Biological barriers can serve as good biological-based carriers for the flocculation and growth of microbial communities in rivers, lakes and wetlands to form biofilms. When polluted water passes through the biofilm, the sewage and the bacterial flocs attached and grown on the carrier begin to come into contact. Due to the action of bacteria and extracellular polymers, the surface of the bacterial flocs flocculates or adsorbs organic matter in the water, forming a dynamic balance with the concentration of organic matter in the medium, so that the surface of the bacterial flocs has both a large number of active bacteria and a high concentration of organic matter, making it a suitable place for bacterial reproduction. Due to this favorable condition, the bacteria on the surface of the bacterial flocs multiply rapidly and quickly consume the organic matter in the water, thereby purifying the water quality; 3. When sewage flows through the biological carrier, contact oxidation is carried out. The water flows in contact with the carbon fiber grass, causing microorganisms to attach to the carbon fiber grass to form a biofilm, so that the organic matter in the sewage is gradually decomposed and oxidized, thereby purifying the water quality. Near the center of the carbon fiber grass, due to the reduction of dissolved oxygen, an anaerobic state is easily generated. Such anaerobic or facultative anaerobic microorganisms can consume nitrate nitrogen in the water, thereby achieving the effect of denitrification; 4. The widely arranged submerged vegetation not only removes nutrients from the water and inhibits the resuspension of suspended matter, but also increases the transparency of the water body, promotes the recovery of the aquatic ecosystem, and improves biodiversity and ecological health. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the estuary ecological isolation water purification system of Example 1 of the present application; Figure 2 is a schematic diagram of the structure of the interception module in Example 1 of the present application; Figure 3 is a schematic diagram of the structure of the biological purification module in Example 1 of the present application; Figure 4 is a schematic diagram of the structure of the biological carrier in Example 1 of the present application; Figure 5 It is a schematic diagram of the structure of the interception module in Example 2 of the present application; Figure 6 is a schematic structural diagram of a column of carrier groups in Example 2 of the present application; Explanation of the reference numerals: 1. Interception module; 11. Biological barrier; 12. Underwater fixing part; 121. Underwater beam; 122. Connecting rope; 123. Slide buckle; 124. Fixed pile; 13. Suspended part; 131. Floating belt; 132. Float; 14. Anchor ring; 2. Biological purification module; 21. Carrier frame; 211. Frame body; 212. Upper connecting rod; 213. Lower connecting rod; 22. Carbon fiber grass; 221. Biological rope; 222. Carbon fiber; 3. Submerged vegetation; 4. Cleaning device; 41. Cleaning brush strip; 42. Driving assembly; 421. Driving wheel; 422. Driven wheel; 423. Transmission belt; 424. Driving source; 43. Algae hook; 5. Column; 51. First support; 52. Second support. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-Figure 6 This application is described in further detail.

[0027] Embodiment 1: Reference Figure 1 and Figure 2 , the estuary ecological isolation water purification system provided in Example 1 of the present application includes an interception module 1 and a biological purification module 2 arranged in sequence along the direction of water flow, and submerged vegetation 3 is arranged on both sides of the biological purification module 2, and several biological purification modules 2 are arranged at intervals along the direction of water flow. The interception module 1 includes a biological barrier 11, an underwater fixing part 12 arranged at the bottom of the biological barrier 11, and a suspended part 13 arranged at the top of the biological barrier 11; the biological barrier 11 is arranged in multiple rows along the direction of water flow, and the underwater fixing parts 12 and the suspended parts 13 are arranged in multiple numbers corresponding to the biological barrier 11. In this embodiment, the biological barrier 11 is a biological rope dense net structure. During actual construction, 5 biological barriers 11 are arranged 80-200m upstream of the branch estuary. The biological barrier 11 can effectively intercept foreign pollutants from entering the main river channel. It can be located underwater during arrangement without affecting the river landscape, and the biological barrier 11 is permeable and does not affect the normal flood discharge and drainage functions of the river channel.

[0028] Reference Figure 2, the underwater fixing part 12 includes an underwater crossbeam 121 and a plurality of fixing piles 124 fixed on the underwater crossbeam 121, one end of the fixing pile 124 passes through the underwater crossbeam 121 and is inserted into the bottom of the riverbed; the underwater crossbeam 121 is specifically set as a gabion, and the fixing pile 124 is a galvanized steel pipe with a specification of DN50; the length of the fixing pile 124 is 3m, and the interval between adjacent fixing piles 124 is 5m. A connecting rope 122 is fixed at the bottom of the biological barrier 11, and the connecting rope 122 is tied to the underwater crossbeam 121, so that the biological barrier 11 is fixedly connected to the underwater crossbeam 121; the side of the biological barrier 11 is fixed to the fixing pile 124 by installing a clamp or a buckle. A stable installation of the biological barrier 11 underwater is achieved, the stability of the biological barrier 11 under the impact of water flow is ensured, and displacement or damage caused by the impact of water flow is avoided. In this embodiment, 5 underwater fixing parts 12 are provided corresponding to the biological barrier 11. The suspension member 13 includes a floating belt 131 and a plurality of floating balls 132 fixed on the floating belt 131. The floating belt 131 can be made of high-strength plastic or rubber material. The floating belt 131 is fixed to the top of the biological barrier 11 and laid along the length direction of the biological barrier 11. Two floating balls 132 are arranged at intervals in each meter of the floating belt 131. The floating balls 132 can be made of hollow plastic balls or other lightweight materials to ensure that the part of the biological barrier 11 above the water surface is always in a suspended state. This design can effectively prevent the upper part of the biological barrier 11 from being loosened due to the impact of water flow, and ensure its effective interception effect in the entire water flow area.

[0029] Reference Figure 3 and Figure 4 The biological purification module 2 includes a plurality of carrier groups arranged at intervals perpendicular to the water flow direction, and the carrier groups include a plurality of biological carriers arranged at intervals along the water flow direction; in this embodiment, three carrier groups are specifically provided, and four biological carriers are provided in one carrier group. The biological carrier includes a carrier frame 21 and a plurality of ecological elastic fillers arranged in the carrier frame 21. The carrier frame 21 includes a frame body 211 and an upper connecting rod 212 and a lower connecting rod 213 fixed at both ends of the frame body 211, and the upper connecting rod 212 and the lower connecting rod 213 are provided with a plurality of pieces, and the upper connecting rod 212 and the lower connecting rod 213 correspond to each other one by one. The carrier frame 21 can be made of stainless steel or high-strength plastic material, and has good corrosion resistance and pressure resistance. The ecological elastic filler is made of carbon fiber grass 22, and each of the upper connecting rods 212 and the lower connecting rods 213 arranged opposite to each other is connected with carbon fiber grass 22, and a plurality of carbon fiber grasses 22 are arranged at intervals along the length direction of the upper connecting rod 212. In this embodiment, the carrier frame 21 is a rectangular frame of 6m×3m×1m, and the arrangement quantity of carbon fiber grasses 22 in one biological carrier may be 175-185 pieces, and is specifically set to 180 pieces in this embodiment.

[0030] The carbon fiber grass 22 includes a biological rope 221 and a plurality of bundles of carbon fibers 222 fixed on the biological rope 221. One end of the biological rope 221 is fixed on the upper connecting rod 212, and the other end is fixed on the lower connecting rod 213. Among them, the fiber amount in the carbon fiber grass 22 is not less than 20g / root, and the specific surface area is not less than 10m / root. The carbon fiber 222 selected in this embodiment is a PAN-based carbon fiber made of acrylic long fiber, which has been specially treated in the sizing process and can be rapidly diffused in water. A bundle of carbon fiber 222 is composed of 12,000 fine fiber filaments with a diameter of 7pm. After being put into water, the water-soluble sizing agent dissolves, and the 12,000 fine fiber filaments are dispersed and spread out. There are bumps on the surface of each fine fiber filament, so the carbon fiber 222 can form a larger specific surface area as a whole. A large amount of pollutants and microorganisms in the water will adhere to the carbon fiber grass 22, and the microorganisms will become activated and difficult to separate, forming a biofilm on the bio-rope 221 to decompose and remove pollutants, thereby achieving the effect of water purification.

[0031] The transfer process of pollutants in water bodies in biological carriers is mainly as follows: oxygen in the air dissolves in the flowing water layer and is transferred to the biofilm through the attached water layer; organic pollutants are transferred from the flowing water layer to the attached water layer, and then enter the biofilm; microbial metabolites such as H20 enter the flowing water layer through the attached water layer and are discharged with it; CO2 and anaerobic layer decomposition products such as H2S, NH3, and CH4 and other gaseous metabolites escape from the water layer into the air.

[0032] Reference Figure 1 , submerged vegetation 3 is planted on both sides of the biological purification module 2, and the submerged vegetation 3 is located at a water depth of 0.5-2.0m underwater. The submerged vegetation 3 can be evergreen dwarf Vallisneria or other submerged vegetation 3 suitable for the local environment. These plants can effectively remove nutrients in the water, inhibit the resuspension of suspended matter, release oxygen, and improve the transparency of the water body. The planting density of submerged vegetation 3 can be adjusted according to actual conditions to achieve the best purification effect. Within the land area of ​​the lake and river, an ecological buffer zone combining trees and ground covers is constructed to intercept and absorb pollutants brought by surface runoff, and further ensure and maintain the water quality of the estuary waters.

[0033] The implementation principle of an estuary ecological isolation water purification system in Example 1 of the present application is as follows: an interception module 1 is pre-deployed 200m upstream of the branch estuary, and the biological barrier 11 is arranged along the direction of the water flow, ensuring that the bottom of the biological barrier 11 is firmly connected to the underwater fixing part 12, and the top of the biological barrier 11 is firmly connected to the suspended part 13, ensuring the stability of the biological barrier 11 under the impact of the water flow. Multiple rows of carrier groups are arranged at intervals along the direction of the water flow, and each row of carrier groups includes a plurality of biological carriers. The biological carriers include a carrier frame 21 and a number of ecological elastic fillers arranged in the carrier frame 21 to ensure the uniform distribution of the carrier groups in the water flow. Submerged vegetation 3 is planted on both sides of the biological purification module 2, and the submerged vegetation 3 is located at a water depth of 0.5-2.0m underwater. Submerged vegetation 3 suitable for the local environment is selected for planting to ensure the growth density and purification effect of the submerged vegetation 3. The biological barrier 11 in the interception module 1 effectively intercepts larger solid pollutants to prevent them from entering the main river channel; the carrier group and submerged vegetation 3 in the biological purification module 2 work together to adsorb and decompose organic matter and nutrients in the water to improve water quality. This design can not only effectively improve the water quality of the tributary estuary, but also improve the stability and reliability of the system, and has high practical value.

[0034] Embodiment 2: Example 2 of the present application provides an estuary ecological isolation water purification system.

[0035] Referring to FIG. 5 , the difference between Example 2 of the present application and Example 1 is that: a plurality of anchor rings 14 are fixed on the underwater cross beam 121, and the connecting rope 122 at the bottom of the biological barrier 11 is fixed to the anchor ring 14 on the underwater cross beam 121 by a buckle. The connecting rope 122 can be made of high-strength nylon rope or other corrosion-resistant materials to ensure the reliability and durability of the connection. A plurality of rows of slide buckle groups are also connected to the side of the biological barrier 11, and the slide buckle 123 group includes a plurality of slide buckles 123 arranged at intervals along the length direction of the fixed pile 124, and the slide buckle 123 group corresponds to the fixed pile 124 one by one. The slide buckles 123 in a row of slide buckle 123 groups are all sleeved outside the corresponding fixed pile 124 and are slidably connected to the fixed pile 124. This design can facilitate the installation and disassembly of the biological barrier 11, and can also maintain stable tension under the impact of water flow.

[0036] refer to Figure 6In order to further improve the self-cleaning ability and long-term operation of the system, a cleaning device 4 is provided between two adjacent upper connecting rods 212, and the cleaning device 4 includes a cleaning brush bar 41 and a driving assembly 42. A cleaning brush bar 41 is slidably provided between each two adjacent upper connecting rods 212. In one carrier group, the cleaning brush bar 41 is passed through the first carrier frame 21 to the last carrier frame 21, and bristles are provided at both ends of the cleaning brush bar 41, and the bristles are against the adjacent carbon fiber grass 22; the cleaning brush bar 41 can also be connected to an algae hook 43, and the algae hook 43 is provided perpendicular to the cleaning brush bar 41.

[0037] Each group of biological carriers is provided with columns 5 at both ends, and one end of the column 5 is inserted into the bottom of the riverbed for fixing. A first support 51 is fixed on the top of the column 5, and a second support 52 is fixed on the bottom of the column 5. The driving assembly 42 includes a driving wheel 421, a driven wheel 422, a transmission belt 423 and a driving source 424. The first support 51 is rotatably connected to the driving wheel 421, and the second support 52 is rotatably connected to the driven wheel 422. The transmission belt 423 is sleeved outside the driven wheel 422 and the driving wheel 421 located on the same column 5. One end of the cleaning brush strip 41 is fixed to a transmission belt 423, and the other end is fixed to another transmission belt 423; the driving source 424 is specifically configured as a servo motor, and a servo motor is fixed on the top of each column 5. The output shaft of the servo motor is coaxially fixed with the driving wheel 421 to drive the driving wheel 421 to rotate. By starting each servo motor, the cleaning brush strip 41 can be driven to move back and forth in the vertical direction, and the biological carrier can be automatically cleaned regularly to prevent the biological carrier surface from being blocked and extend the service life of the system. In this embodiment, four upper connecting rods 212 are specifically provided, and three cleaning devices 4 are correspondingly provided in one carrier group.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An estuary ecological isolation water purification system, characterized in that: It comprises an interception module (1) and a biological purification module (2) which are arranged in sequence along the water flow direction, and submerged vegetation (3) is arranged on both sides of the biological purification module (2); The interception module (1) comprises a biological barrier (11), an underwater fixing member (12) arranged at the bottom of the biological barrier (11), and a suspended member (13) arranged at the top of the biological barrier (11); The biological purification module (2) comprises a plurality of carrier groups arranged at intervals perpendicular to the water flow direction, the carrier group comprises a plurality of biological carriers arranged at intervals along the water flow direction, and the biological carriers comprise a carrier frame (21) and a plurality of ecological elastic fillers arranged in the carrier frame (21).

2. The estuary ecological isolation water purification system according to claim 1, characterized in that: The underwater fixing member (12) comprises an underwater cross beam (121) fixed to a plurality of fixing piles (124) on the underwater cross beam (121); the bottom of the biological barrier net (11) is connected to the underwater cross beam (121); and the side surfaces of the biological barrier net (11) are connected to the fixing piles (124).

3. The estuary ecological isolation water purification system according to claim 2, characterized in that: The suspension element (13) comprises a floating belt (131) and a plurality of floating balls (132) fixed on the floating belt (131).

4. The estuary ecological isolation water purification system according to claim 2, characterized in that: The carrier frame (21) comprises a frame body (211) and an upper connecting rod (212) and a lower connecting rod (213) fixed at two ends of the frame body (211); the ecological elastic filler comprises carbon fiber grass (22); The carbon fiber grass (22) is connected between the upper connecting rod (212) and the lower connecting rod (213), and a plurality of carbon fiber grasses (22) are arranged at intervals along the length direction of the upper connecting rod (212).

5. The estuary ecological isolation water purification system according to claim 2, characterized in that: Submerged vegetation (3) is located at a depth of 0.5-2.0 m underwater.

6. The estuary ecological isolation water purification system according to claim 2, characterized in that: An anchor ring (14) is fixed on the underwater crossbeam (121), a connecting rope (122) is fixed on the bottom of the biological barrier net (11), and the connecting rope (122) is fixed on the anchor ring (14); a sliding buckle (123) is connected to the side of the biological barrier net (11), and a plurality of the sliding buckles (123) are arranged at intervals along the length direction of the fixing pile (124), and the sliding buckles (123) are sleeved outside the fixing pile (124).

7. The estuary ecological isolation water purification system according to claim 4, characterized in that: A cleaning device (4) is provided between two adjacent upper connecting rods (212), the cleaning device (4) comprising a cleaning brush bar (41) and a driving assembly (42), the cleaning brush bar (41) being slidably provided between the two upper connecting rods (212), and the driving assembly (42) being used to drive the cleaning brush bar (41) to slide.

8. The estuary ecological isolation water purification system according to claim 7, characterized in that: It also includes a first support (51) and a second support (52) arranged at intervals in the vertical direction, and the driving assembly (42) includes a driving wheel (421), a driven wheel (422), a transmission belt (423) and a driving source (424); The driving wheel (421) is rotatably connected to the first support (51), the driven wheel (422) is rotatably connected to the second support (52), the transmission belt (423) is sleeved outside the driven wheel (422) and the driving wheel (421), the cleaning brush strip (41) is fixed on the transmission belt (423), and the driving source (424) is used to drive the driving wheel (421) to rotate.

9. The estuary ecological isolation water purification system according to claim 7, characterized in that: The cleaning brush strip (41) is connected to an algae collecting hook (43).

Images