CN115259385A

CN115259385A - Ecological floating island

Info

Publication number: CN115259385A
Application number: CN202210980194.0A
Authority: CN
Inventors: 范秀磊; 陈清; 许航; 戴青松; 李承罄
Original assignee: Suzhou Litree Purifying Technology Co Ltd
Current assignee: Suzhou Litree Purifying Technology Co Ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-11-01

Abstract

The invention discloses an ecological floating island, which comprises a floating body, a floating bed, aquatic plants and a plurality of groups of windmill assemblies, wherein: the aquatic plants are inserted in the floating bodies; the floating bed is hung below the floating body and is provided with a water seepage layer communicated with the inside and the outside, and the inside of the floating bed is filled with a chestnut shell-photocatalytic ceramsite composite filler; the windmill component comprises an aeration pipe and at least one windmill, the aeration pipe is inserted below the floating body, and the windmill is inserted above the floating body and communicated with the outside and the aeration pipe; the method is characterized in that sewage enters the floating bed through a water seepage layer, the chestnut shell-photocatalytic ceramsite composite filler can be subjected to surface film formation rapidly in a water body, N can be well removed in a water area with a large C/N ratio, the water eutrophication can be repaired, and pollutants adsorbed on the surface of the chestnut shell-photocatalytic ceramsite composite filler are oxidized and degraded into carbon dioxide and water during illumination, so that the pollutants are thoroughly removed; the windmill rotates to form air pressure, and the air flow is conveyed into the water body, so that the aeration of the water body is increased, the exchange speed of the water body in the floating bed is accelerated, and the effect of enhancing the restoration rate of the water body is achieved.

Description

Ecological floating island

Technical Field

The invention relates to the field of water treatment, in particular to an ecological floating island.

Background

In China, a plurality of rivers and lakes exist, and in recent years, with the acceleration of urbanization, the population is rapidly concentrated, and the industrial agriculture is rapidly developed, so that the problem of water pollution is gradually highlighted. And the water pollution damages the water ecology, so that the aquatic ecosystem of the lake and the river is seriously degraded, the speed of restoring the water ecology is reduced, and the human landscape is also influenced.

At present, the restoration of water ecology is more and more emphasized by people, the ecological floating island is taken as a conventional technology aiming at the restoration of water ecology, bamboo and high polymer materials are mainly taken as carriers to load aquatic plants for soilless culture, and the roots of the aquatic plants adsorb and absorb a large amount of nitrogen and phosphorus substances, so that the ecological floating island is a measure for restoring water environment in situ. However, the existing ecological floating island mainly has the following problems: firstly, the membrane is formed by utilizing the artificially prepared high molecular substance, although the membrane has a huge specific surface area, the membrane forming time on the surface is long, and when the membrane is applied to a water area with a larger C/N ratio, N cannot be efficiently removed, so that the membrane is not beneficial to the restoration of water eutrophication; secondly, the exchange rate of the water body is low, so that the water body restoration time of the whole water area is long and the effect is not obvious.

Disclosure of Invention

Based on the above, the ecological floating island is provided in order to solve the problems of low dissolved oxygen concentration in the water body and unobvious sewage purification effect.

The invention provides an ecological floating island, which comprises a floating body, a floating bed, aquatic plants and a plurality of groups of windmill assemblies, wherein: the aquatic plants are inserted into the floating bodies; the floating bed is hung below the floating body and is provided with a water seepage layer communicated with the inside and the outside, and the inside of the floating bed is filled with a chestnut shell-photocatalytic ceramsite composite filler; the windmill component comprises an aeration pipe and at least one windmill, the aeration pipe is inserted below the floating body, and the windmill is inserted above the floating body and communicated with the outside and the aeration pipe.

When the ecological floating island is used, the floating bed is immersed in a water body, the floating body floats on the water surface and controls the fluctuation of the floating bed, the windmill is inserted into the floating body, the aeration pipe is inserted into the water body, sewage enters the floating bed through a water seepage layer, the chestnut shell-photocatalytic ceramsite composite filler can be subjected to surface film formation rapidly in the water body, N can be well removed in a water area with larger C/N ratio, the restoration of water eutrophication is facilitated, and pollutants adsorbed on the surface of the chestnut shell-photocatalytic ceramsite composite filler are oxidized and degraded into carbon dioxide and water during illumination, so that pollution is thoroughly removed; meanwhile, the rotation of the windmill can form air pressure, and the air flow is conveyed to the water body from top to bottom through the aeration pipe, so that the aeration of the water body is increased, the exchange speed of the water body in the floating bed is accelerated, and the effect of enhancing the restoration rate of the water body is achieved.

In one embodiment, the floating bed is of a cylindrical structure and comprises a shell, a plurality of water inlets are formed in the shell, the water seepage layer is coated and fixed on the shell, the chestnut shell-photocatalytic ceramsite composite filler comprises a chestnut shell substrate and photocatalytic ceramsite, the chestnut shell substrate is arranged below the interior of the shell, and the photocatalytic ceramsite is positioned in the shell and laid above the chestnut shell.

When the ecological floating island is used, the structure of the floating bed is limited so as to facilitate the processing and the preparation of the floating bed, and the specific material and the arrangement mode of the chestnut shell-photocatalytic ceramsite composite filler are limited so as to facilitate the degradation of pollutants.

In one embodiment, a titanium dioxide film is formed on the surface of the photocatalytic ceramsite.

When the ecological floating island is used, the degradation effect of pollutants is further improved by limiting the surface material of the photocatalytic ceramsite.

In one embodiment, the ecological floating island further comprises four bearing ropes, two first hooks are respectively arranged on the two sides of the shell along the axis of the shell, four second hooks are arranged below the floating body, one end of each bearing rope is hung on the first hook, and the other end of each bearing rope is hung on the two second hooks.

When above-mentioned ecological chinampa used, through setting up bearing rope and couple to the body and the equipment of bed of floating and dismantle when needing, and can make the weight of ecological chinampa less, can make things convenient for ecological chinampa's routine maintenance.

In one embodiment, the windmill assembly further comprises a mounting pipe fixed on the floating bed, the mounting pipe is connected with the aeration pipe, the end part far away from the aeration pipe is provided with three air inlets, the number of the windmills is three, and the windmills are inserted into the air inlets and are communicated with the outside and the air inlets.

When the ecological floating island is used, the installation pipe is arranged, and the structural form of the installation pipe is limited, so that the windmill assembly is convenient to install.

In one embodiment, the included angle between every two of the three air inlets is 120 degrees.

When the ecological floating island is used, the included angles between every two of the three air inlets are limited, so that the air inlets are uniformly distributed, the stress of the floating body is uniform, and the stability of the ecological floating island is improved.

In one embodiment, the aerator pipe is provided with a plurality of air outlets far away from the end of the windmill, and the air outlets are arranged at intervals along the vertical direction.

When the ecological floating island is used, the number and the arrangement mode of the air outlets are limited, so that the aeration operation is facilitated.

In one embodiment, the ecological floating island further comprises a latticed floater, an abdicating channel is arranged in the middle area of the floater, the latticed floater is embedded in the abdicating channel, and the aquatic plants are planted on the latticed floater.

When the ecological floating island is used, the net-shaped floating objects are arranged, so that the aquatic plants can be conveniently arranged.

In one embodiment, the latticed floater comprises a plurality of first plastic pipes, a plurality of second plastic pipes, light fillers and a plurality of net bags, the plurality of first plastic pipes are arranged at intervals along a first direction, the plurality of second plastic pipes are arranged at intervals along a second direction and are fixed with the first plastic pipes in a crossed manner, the light fillers are filled in the first plastic pipes and the second plastic pipes, the net bags are arranged in unit cells surrounded by the two first plastic pipes and the two second plastic pipes and are bound with the first plastic pipes and the second plastic pipes, and the aquatic plants are supported on the net bags.

When the ecological floating island is used, the aquatic plants can be conveniently replaced by limiting the specific structure of the latticed floating objects.

In one embodiment, the aquatic plant comprises one or more of aquilaria sinensis, mangosteen, boston fern, coleus blumei, and curcuma alismatifolia.

Drawings

Fig. 1 is a schematic structural diagram of an ecological floating island according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a module consisting of a floating bed and a bearing rope in the ecological floating island shown in fig. 1;

fig. 3 is a schematic structural diagram of a module composed of the floating body, the bearing ropes and the grid-shaped floating objects in the ecological floating island shown in fig. 1;

FIG. 4 is a schematic structural view of a wind turbine assembly in the ecological floating island shown in FIG. 1;

FIG. 5 is a front view of the ecological floating island illustrated in FIG. 1;

fig. 6 is a schematic structural view of a module composed of net-shaped floats and aquatic plants in the ecological floating island shown in fig. 1.

Description of the reference numerals

10. Ecological floating islands; x, a first direction; y, a second direction; z, vertical direction;

100. a float; 110. a second hook; 120. a yielding channel; 130. a circular ring;

200. floating bed; 210. a water seepage layer; 220. a housing; 221. a first hook;

300. an aquatic plant;

400. a windmill assembly; 410. a windmill; 420. an aeration pipe; 421. an air outlet; 430. installing a pipe; 431. an air inlet;

500. a load-bearing rope;

600. a grid-like float; 610. a first plastic tube; 620. a second plastic tube; 630. a net bag; 640. nylon rolling of the strip.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, the invention provides an ecological floating island 10, which is suitable for restoring water environments of lakes and river channels. The ecological floating island 10 comprises a floating body 100, a floating bed 200, aquatic plants 300 and a plurality of groups of windmill assemblies 400, wherein:

the aquatic plant 300 is inserted into the floating body 100, and when the aquatic plant 300 is specifically arranged, the root system of the aquatic plant 300 is deep into the water body, bacteria around the root system of the aquatic plant 300 can adsorb and degrade pollutants in the water body, and the aquatic plant 300 can also absorb pollutants in the water.

The floating body 100 floats on the water surface, the floating bed 200 is immersed in the water body, the floating bed 200 is hung below the floating body 100, the floating bed 200 is provided with a water seepage layer 210, the water seepage layer 210 is communicated with the inside and the outside of the floating bed 200, the floating bed 200 is filled with the Chinese chestnut shell-photocatalytic ceramsite composite filler, compared with a plurality of modes of manually preparing high molecular substances with specific surface areas for film hanging, the Chinese chestnut shell-photocatalytic ceramsite composite filler is selected for surface film hanging, and the surface film hanging time can be effectively reduced.

The number of the windmill assemblies 400 may be two, three, four or more, the plurality of windmill assemblies 400 are uniformly arranged on the floating body 100, each windmill assembly 400 includes an aeration pipe 420 and at least one windmill 410, the number of the windmills 410 may be one, two, three, four or more, the aeration pipe 420 is inserted into the floating body 100, the aeration pipe 420 is positioned below the floating body 100, the windmills 410 are inserted into the floating body 100, the windmills 410 are positioned above the floating body 100, and the windmills 410 can communicate the outside with the aeration pipes 420; when the ecological floating island is specifically arranged, the windmill 410 provides power, the ecological floating island is different from the traditional ecological floating island 10, no electric device is adopted, air pressure is formed by wind power according to the principle that a river channel is an air channel, water body aeration is increased, the structure principle is simple, the manufacturing and installation cost is low, the operation period is long, and the ecological floating island is particularly suitable for lakes and rivers.

When the ecological floating island 10 is used, the floating bed 200 is immersed in a water body, the floating body 100 floats on the water surface and controls the fluctuation of the floating bed 200, the windmill 410 is inserted into the floating body 100, the aeration pipe 420 is inserted into the water body, sewage enters the floating bed 200 through the water seepage layer 210, the chestnut shell-photocatalytic ceramsite composite filler can be quickly subjected to surface film formation in the water body, N can be well removed in a water area with larger C/N, the eutrophication of the water body is facilitated, and pollutants adsorbed on the surface of the chestnut shell-photocatalytic ceramsite composite filler are oxidized and degraded into carbon dioxide and water during illumination, so that the pollution is thoroughly removed; meanwhile, the rotation of the windmill 410 can form air pressure, and air flow is conveyed to the water body from top to bottom through the aeration pipe 420, so that the aeration of the water body is increased, the exchange speed of the water body in the floating bed 200 is accelerated, and the effect of enhancing the restoration rate of the water body is achieved.

The floating bed 200 has various structural forms, and in a preferred embodiment, as shown in fig. 1 and 2, the floating bed 200 has a cylindrical structure, for example, the floating bed 200 has a length of 6m and a radius of 1.5m. The floating bed 200 comprises a shell 220, a plurality of oval holes are uniformly formed in the cylindrical surface of the shell 220, for example, the diameter of the oval holes is 15cm, the oval holes are communicated with the water inlet inside and outside the shell 220, and the cylindrical shell of the floating bed 200 can be made of polyethylene or other plastic materials or non-plastic materials. The water seepage layer 210 is coated around the shell 220 and outside the chestnut shell-photocatalytic ceramsite composite filler, for example, the length of the water seepage layer 210 is 4.5m, the water seepage layer 210 and the shell 220 are fixed into a whole by means of snap connection, concave-convex matching and the like, and the water seepage layer 210 is made of wear-resistant and environment-friendly high polymer resin materials as well as other materials capable of meeting requirements. The chestnut shell-photocatalytic ceramsite composite filler comprises a chestnut shell substrate and photocatalytic ceramsite, wherein the chestnut shell substrate is arranged below the interior of the shell 220, the photocatalytic ceramsite is positioned in the shell 220, and the photocatalytic ceramsite is laid above the chestnut shell; in the specific setting, the chestnut shell matrix is prepared by taking the chestnuts out, drying the rest chestnut shells in the sun, and decomposing the chestnut shells into small pieces, and the chestnut shell matrix is placed at the lower layer of the inner space of the shell 220 so as to facilitate the subsequent laying of the light-transmitting photocatalytic ceramsite on the chestnut shell matrix.

Specifically, a layer of titanium dioxide film is formed on the surface of the photocatalytic ceramsite; in the specific setting, the prepared ceramsite is soaked in a titanium dioxide solution, so that a layer of titanium dioxide film is loaded on the surface of the ceramsite, the titanium dioxide film is used as a photocatalytic film and is also a biological film, the photocatalytic film plays a role in photodegradation, and the titanium dioxide film is laid on the upper layer of the inner space of the shell 220, can transmit light and can absorb short waves when irradiated by light.

In the ecological floating island 10, the photocatalytic ceramsite and the chestnut shell substrate cooperate, have a huge specific surface area and are loaded with a biological film, when a water body flows through the chestnut shell filler inside, pollutants are firstly adsorbed by the filler and then assimilated and dissimilated by microorganisms on the surface of the filler, and COD, TN and TP in the water body are removed; meanwhile, the bacteria of the 300 root system of the aquatic plant can adsorb and degrade the pollutants, and the bacteria can absorb the pollutants in the water at the same time; the photocatalytic ceramsite on the surface of the Chinese chestnut shell can grow microorganisms, pollutants are adsorbed and degraded when a water body passes through, and because the surface of the ceramsite is loaded with the titanium dioxide film, when the ceramsite is irradiated by sunlight, the titanium dioxide absorbs short waves, the pollutants adsorbed on the surface of the ceramsite are oxidized and degraded into carbon dioxide and water, the pollutants are thoroughly removed, the physical, chemical and biological principles are fully utilized, the effects of plants, microorganisms, photocatalysis and wind energy are cooperated, the pollutant removal rate is improved, the water body restoration cost is reduced, and the water body restoration effect is achieved.

To facilitate the assembly and disassembly of the floating body 100 and the floating bed 200, specifically, as shown in fig. 1, 2 and 3, the ecological floating island 10 further includes four bearing ropes 500, two first hooks 221 are respectively disposed on two sides of the shell 220 along the axis thereof, the two hooks are uniformly disposed on the side surface of the shell 220, four second hooks 110 are disposed below the floating body 100, the four second hooks 110 are uniformly disposed at four corners below the floating body 100, one end of the bearing rope 500 is hung on the first hook 221, and the other end of the bearing rope 500 is hung on the two second hooks 110. In the ecological floating island 10, the bearing rope 500 is separated from and assembled with the first hook 221 and/or the second hook 110 by means of the hanging manner between the bearing rope 500 and the first hook 221 and the second hook 110, so that the floating bed 200 and the floating body 100 can be conveniently assembled and disassembled, the weight of the ecological floating island 10 is small, and the daily maintenance of the ecological floating island 10 can be conveniently carried out.

In order to facilitate the installation of the windmill assembly 400, in a preferred embodiment, as shown in fig. 3, 4 and 5, a plurality of through holes penetrating along the vertical direction Z are formed in the floating body 100, and a circular ring 130 is formed in each through hole, the windmill assembly 400 further comprises an installation pipe 430, and the installation pipe 430 and the circular ring 130 are connected together in a threaded connection, a snap connection, a concave-convex fit and the like, so as to realize the fixed connection between the installation pipe 430 and the floating body 100. The mounting pipe 430 and the aeration pipe 420 are connected together by means of threaded connection, snap connection, concave-convex fit and the like, the end of the mounting pipe 430, which is far away from the aeration pipe 420, is located above the floating body 100 and is provided with three air inlets 431, the number of the windmills 410 is three, the windmills 410 are inserted into the air inlets 431, one ends, which are far away from the blades of the windmills 410, are connected with the air inlets 431 into a whole by means of threaded connection, snap connection, concave-convex fit and the like, and meanwhile, the windmills 410 are communicated with the outside and the air inlets 431. In a specific arrangement, adjacent blades of the windmill 410 are turned over by 90 degrees, the inner diameter of the mounting pipe 430 may be 6cm, and the diameter of the blade connection end may be 7cm.

Specifically, the included angle between each two of the three wind inlets 431 may be 120 ° so that the wind inlets 431 are uniformly distributed, and of course, the included angle between each two wind inlets 431 may also slightly change around 120 °.

In the above ecological floating island 10, when wind is produced, the blades of the windmill 410 rotate at a high speed under the action of wind power due to the arched shape thereof, and form airflow through the air inlet 431 toward the inside of the installation pipe 430 and provide wind with a certain wind speed, and meanwhile, the high-speed airflows produced in three directions converge in the aeration pipe 420 to form a certain air pressure, so that the airflow is pressed into the water to be full of oxygen in the water, thereby enhancing the water interaction, providing oxygen for microorganisms in the floating bed 200, and enhancing the water purification effect. Meanwhile, when the wind direction is uncertain, enough air pressure can be formed in multiple directions, sufficient aeration is achieved for a water body, the effect of water flow enhancement is achieved, microorganisms in water are helped to degrade pollutants better, the included angle between every two limited air inlets 431 is 120 degrees, the stress of the floating body 100 is uniform, and the stability of the ecological floating island 10 is improved.

In order to facilitate the aeration operation, specifically, as shown in fig. 4 and 5, the end of the aeration pipe 420 away from the windmill 410 is provided with a plurality of air outlets 421, the plurality of air outlets 421 are arranged at intervals along the vertical direction Z, the number of the air outlets 421 may be two, three, four, or more, all the air outlets 421 are arranged toward the floating bed 200, so that the water body and the interior of the floating bed 200 can be sufficiently aerated relatively conveniently, and in order to further improve the aeration effect, the aeration pipe 420 may be inserted onto the floating bed 200, or the air outlets 421 are enclosed around the floating bed 200.

In order to facilitate the installation of the aquatic plants 300, in a preferred embodiment, as shown in fig. 1 and 6, the middle area of the floating body 100 is provided with a receding channel 120 to form a structure with two high sides and a low middle, and the ecological floating island 10 further includes a grid-shaped floating object 600, for example, the floating body 100 is made of foam, the floating body 100 floats on the water surface with a length of 8m, a width of 3m and a height of 0.5m, and the grid-shaped floating object 600 is made of lightweight material and has a length of 4.5m. The latticed floater 600 is embedded in the abdicating channel 120, and the aquatic plants 300 are planted on the latticed floater 600.

In the ecological floating island 10, the latticed floater 600 supports the aquatic plants 300 and is arranged in the middle of the floating body 100 in an embedded manner, so that the pressure on the floating body 100 caused by the weight increase of the floating bed 200 due to the soaking of the chestnut shell-photocatalytic ceramsite composite filler is relieved, the pressure on the floating body 100 caused by the gravity of the plants is reduced, and the ecological floating island is favorable for moving the floater and timely salvaging and replacing the aquatic plants 300 in dry seasons when the aquatic plants 300 wither, so that the landscape beautifying effect is achieved.

The structure of the mesh-type floater 600 has various forms, and specifically, as shown in fig. 1 and 6, the mesh-type floater 600 includes a plurality of first plastic pipes 610, a plurality of second plastic pipes 620, light packing, and a plurality of net bags 630, the number of the first plastic pipes 610 may be two, three, four, or more than four, the plurality of first plastic pipes 610 may be spaced along a first direction X, the number of the second plastic pipes 620 may be two, three, four, or more than four, the plurality of second plastic pipes 620 may be spaced along a second direction Y, and the second plastic pipes 620 and the first plastic pipes 610 are cross-fixed by means of screw connection, snap connection, male-female fit, adhesion, etc., the light packing is filled in the first plastic pipes 610 and the second plastic pipes 620, the net bags 630 are disposed in a unit cell surrounded by the two first plastic pipes 610 and the two second plastic pipes 620, and the net bags 630 are connected to the first plastic pipes 610 and the second plastic pipes 620 by four nylon, and the net bags 610 are attached to the aquatic plants 300 on the net bags 630, thereby facilitating the aquatic plant salvage of the aquatic plants 300 when changing seasons, and supporting the aquatic plants 300, and reducing water bodies contaminated water bodies. When the plastic net bag is specifically arranged, the first plastic pipe 610 and the second plastic pipe 620 can be polyethylene plastic pipes, the net bag 630 can be a nylon net, and the first plastic pipe 610 and the second plastic pipe 620 can also be other light materials; the floating bed 200 is mainly submerged in the water body near the shore, and the sizes of the floating bed 200 and the floating body 100 are designed according to the actual situation, and the unit size of the floating objects is determined according to the number of the aquatic plants 300 actually supported.

In a preferred embodiment, the aquatic plant 300 includes one or more of aquilaria sinensis, cibotium guianensis, boston fern, coleus blumei and curcuma alismatifolia, and when the aquatic plant 300 is specifically set, plants which are well adapted to aquatic environment, such as the aquilaria sinensis, the cibotium guianensis, the arrowroot and the like, and ornamental plants of the ornamental flowers and the like, such as the curcuma alismatifolia, the coleus blumei and the like, which are domesticated through water culture are adopted, so that the ornamental value of the ecological floating island 10 is improved. Of course, the aquatic plant 300 is not limited thereto, and may be other species that can satisfy the requirements.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims

1. The utility model provides an ecological chinampa, its characterized in that, includes body, floating bed, aquatic plant and multiunit windmill subassembly, wherein: the aquatic plants are inserted into the floating bodies; the floating bed is hung below the floating body and is provided with a water seepage layer communicated with the inside and the outside, and the inside of the floating bed is filled with a chestnut shell-photocatalytic ceramsite composite filler; the windmill component comprises an aeration pipe and at least one windmill, the aeration pipe is inserted below the floating body, and the windmill is inserted above the floating body and communicated with the outside and the aeration pipe.

2. The ecological floating island according to claim 1, wherein the floating bed is of a cylindrical structure and comprises a shell, a plurality of water inlets are arranged on the shell, the water seepage layer is coated and fixed on the shell, the chestnut shell-photocatalytic ceramsite composite filler comprises a chestnut shell substrate and photocatalytic ceramsite, the chestnut shell substrate is arranged below the interior of the shell, and the photocatalytic ceramsite is positioned in the shell and laid above the chestnut shell.

3. The ecological floating island according to claim 2, wherein a titanium dioxide film is formed on the surface of the photocatalytic ceramsite.

4. The ecological floating island according to claim 2, further comprising four bearing ropes, wherein the shell is provided with two first hooks along two sides of the axis of the shell, four second hooks are arranged below the floating body, one end of each bearing rope is hung on one first hook, and the other end of each bearing rope is hung on two second hooks.

5. The ecological floating island according to claim 1, wherein the windmill assembly further comprises a mounting pipe fixed on the floating bed, the mounting pipe is connected with the aeration pipe, the end part far away from the aeration pipe is provided with three air inlets, the number of the windmills is three, and the windmills are inserted into the air inlets and are communicated with the outside and the air inlets.

6. The ecological floating island according to claim 5, wherein the included angle between every two of the three air inlets is 120 °.

7. The ecological floating island according to claim 5, wherein the aerator pipe has a plurality of air outlets at the end far away from the windmill, and the plurality of air outlets are arranged at intervals along the vertical direction.

8. The ecological floating island according to claim 1, further comprising a latticed floater, wherein a yielding channel is arranged in the middle area of the floating body, the latticed floater is embedded in the yielding channel, and the aquatic plants are planted on the latticed floater.

9. The ecological floating island according to claim 8, wherein the latticed floater comprises a plurality of first plastic pipes, a plurality of second plastic pipes, a plurality of light-weight packing and a plurality of net bags, the plurality of first plastic pipes are arranged at intervals along a first direction, the plurality of second plastic pipes are arranged at intervals along a second direction and are fixed with the first plastic pipes in a crossed manner, the light-weight packing is filled in the first plastic pipes and the second plastic pipes, the net bags are arranged in unit cells enclosed by the two first plastic pipes and the two second plastic pipes and are tied to the first plastic pipes and the second plastic pipes, and the aquatic plants are supported on the net bags.

10. The ecological floating island according to claim 1, wherein the aquatic plants comprise one or more of aquilaria sinensis, umbrellas reevesii, boston fern, coleus blumei and curcuma alismatifolia.