CN113479992B - Three-dimensional ecological floating island combining electrocatalytic and aquatic plant for denitrification of water body - Google Patents
Three-dimensional ecological floating island combining electrocatalytic and aquatic plant for denitrification of water body Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/005—Combined electrochemical biological processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
- C02F2003/003—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms using activated carbon or the like
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/008—Mobile apparatus and plants, e.g. mounted on a vehicle
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a three-dimensional ecological floating island for denitrification of a water body by combining electrocatalytic and aquatic plants, which comprises an implant and a floating body, wherein the implant and the floating body are both in a circular ring structure, the implant comprises a first bottom plate with a circular ring structure, the upper surface of the bottom plate is connected with an inner side plate and an outer side plate, the outer side plate is positioned on the outer ring of the bottom plate, the inner side plate is positioned on the inner ring of the bottom plate, the outer side plate and the inner side plate jointly form a planting groove for planting emergent aquatic plants on the upper surface of the floating body, the planting groove is in an annular groove structure, and the bottoms of the outer side plate and the inner side plate are connected with a plurality of artificial aquatic plants; the floating body comprises a second bottom plate with a circular ring structure, a solar panel is arranged on the upper surface of the second bottom plate, the solar panel is electrically connected with the storage battery, and the storage battery is fixedly connected to the second bottom plate. The invention combines and affects the electrocatalytic technology, the aquatic plants and the microorganisms in the filler matrix, and promotes the removal of pollutants together with good removal effect.
Description
Technical Field
The invention belongs to the technical field of water purification, and particularly relates to a three-dimensional ecological floating island for denitrification of water by combining electrocatalytic and aquatic plants.
Background
The application number is 2015103797621, the invention is an electrochemical biological floating island for purifying persistent pollutants in urban water, the whole system is fixed in the center of a lake or a river channel in an anchoring manner in the technical scheme, and a floating plate provides buoyancy to bear a root fixing base for planting the plant floating island; the solar panel provides electric energy to drive the propeller to cause water flow disturbance; constant current is applied to the anode and the cathode to realize electro-adsorption and electro-catalytic purification of persistent pollutants, floating plants which can be planted in the technical scheme are limited, the plants absorb nitrogen and phosphorus, meanwhile, the floating and submerged plants are easy to die due to oxygen deficiency, secondary pollution is caused to water, and the effect of the technical scheme on water purification is worry.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the three-dimensional ecological floating island which combines the electrocatalytic and the aquatic plant and is used for denitrification of the water body, and the water body can be better purified through the oxidation of the electrocatalytic technology on the organic matters in the water body, the purification of the aquatic plant and the degradation of microorganisms.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the three-dimensional ecological floating island comprises an implant and a floating body, wherein the implant and the floating body are of circular ring structures, the outer diameter of the floating body is large, the floating body is positioned at the periphery of the implant, and the outer side wall of the implant is detachably connected with the inner side wall of the floating body through a connecting rod; the planting body comprises a first bottom plate with a circular ring structure, a through hole is formed in the center of the first bottom plate, the upper surface of the bottom plate is connected with an inner side plate and an outer side plate, the outer side plate is positioned on the outer ring of the bottom plate, the inner side plate is positioned on the inner ring of the bottom plate, the outer side plate and the inner side plate jointly form a planting groove for planting emergent aquatic plants on the upper surface of the floating body, the planting groove is of a circular groove structure, and the bottoms of the outer side plate and the inner side plate are connected with a plurality of artificial aquatic plants; the floating body comprises a second bottom plate with a circular ring structure, a solar panel is arranged on the upper surface of the second bottom plate, the solar panel is electrically connected with the storage battery, and the storage battery is fixedly connected to the second bottom plate.
The first and second bottom plates support the whole floating island to float on the water surface through buoyancy, the emergent aquatic plants, the floating plants and submerged artificial aquatic plants form a three-dimensional structure with the ecological water purification floating island in an upper layer, a middle layer and a lower layer, the root system of the emergent aquatic plants downwards grows through meshes of the first bottom plate to absorb water, and the whole ecological floating island realizes multi-level pollutant absorption along the depth direction of the water body. The planting body and the floating body are detachably connected, the independent replacement and the installation are convenient, the volume of the whole floating island can be adaptively increased and reduced, the contact area between the planting body and the water surface is increased by the design of the floating body, the buoyancy of the floating island is increased, the solar panel is arranged on the floating body, the power can be supplied to the floating island, and the floating island is environment-friendly and energy-saving.
The emergent aquatic plants and the floating plants have the characteristics of developed root systems and strong stalks, the developed root systems are utilized, the contact area with the water body can be increased, and a densely distributed filter layer is formed. The characteristics can well enable suspended substances and pollutants in water to settle down, and the functions of settlement, adsorption and filtration are achieved.
Meanwhile, a great amount of organic matters such as nitrogen, phosphorus and the like are required to grow the aquatic plants, and nutrient substances such as nitrogen, phosphorus and the like in the water body can be continuously absorbed in the growth process to maintain self metabolism, so that the organic matters in the water are degraded, and the water body is purified. The emergent aquatic plants and the floating plants can convey oxygen generated by photosynthesis and oxygen in the atmosphere to root systems, one part of oxygen is supplied to the respiratory requirements of the plants, the other part of oxygen is released to the root systems and is diffused to the surrounding anoxic environment, and the anoxic environment is formed in the anoxic filler, so that the growth and propagation of microorganisms are enhanced, and the decomposition of organic pollutants in the water body by aerobic microorganisms is promoted.
In the growth process of the aquatic plants, a plurality of microorganisms are generated, and the microorganisms can promote the transpiration of the plants, increase the proportion of C, O of the plants, and promote the NH by the synergistic effect of the plants and the synergistic effect of the microorganisms 4 + The removal of N, TN promotes the transfer of electrons in the electrocatalytic device, the transfer of electrons can promote the generation of hydrogen ions and oxygen, the hydrogen ions can adjust the pH in soil, promote the hydrogen evolution corrosion of iron to generate ferrous ions, further oxidize to generate ferric ions, promote the growth of plants and improve the abundance of microorganism population, and a virtuous circle is formed.
The contact area of the artificial pasture and the water body at the bottom of the implant is large, a layer of biological film is formed on the surface of the artificial pasture, organic matters in the water body are adsorbed and attached to the biological film, the organic matters are decomposed by aerobic bacteria in the aerobic layer, then enter the anaerobic layer for anaerobic decomposition, and the aged biological film is washed away by the flowing water layer to grow a new biological film, so that organic matters in the water body are purified in a reciprocating manner.
The solar panel generates electricity and stores in the battery, and the battery is the artifical pasture and water of bottom and is electrified, can form the electromagnetic field in the water, and the water can accelerate aquatic plant seed's germination after the magnetization, improves its germination percentage, increases the developed degree of its root system, can improve aquatic plant's disease resistance and stress resistance. The magnetic field effect can also increase photochemical activity of the chloroplast of the aquatic plant, increase photosynthetic phosphorylation and Hill reaction speed, and improve nitrate reductase activity, thereby promoting nitrogen metabolism of the aquatic plant and improving absorption of nutrient substances such as nitrogen, phosphorus and the like by the aquatic plant.
Further, mixed filler is filled in the planting groove, emergent aquatic plants are planted in the mixed filler, and floating plants are planted in a water area formed by enclosing a central through hole of the bottom plate and the inner side plate; the outer side plate and the inner side plate are connected with a plurality of artificial aquatic plants.
Preferably, the mixed filler is a mixture of hollow flower balls and iron carbon, wherein the mass ratio of the hollow flower balls to the iron carbon particles is 10:1. the mixed filler is a mixture of hollow flower balls and iron carbon particles, wherein the hollow flower balls and the iron carbon particlesThe mass ratio of the grains is 10:1. the stuffing matrix of the hollow flower ball and the iron carbon particles can promote plants and microorganisms to perform NH treatment 4 + Removal of N, TN facilitates biofilm formation by microorganisms.
The iron carbon particles also form a micro-electrolysis reaction in water, with the iron serving as the anode and the carbon serving as the cathode. Iron filler reacts to produce high-activity Fe 2+ The ions participate in the electrochemical reaction in the water body, and can hydrolyze and play a role in better flocculating agent, and form an iron complex with pollutants in the water. The iron ions in the water can form a complex Fe with phosphate ions 3 (PO 4 ) 2 ·8H 2 O, etc., and has very strong flocculation effect.
Further, the first bottom plate is an insulating plastic mesh plate, and the upper aperture of the first bottom plate is smaller than the diameter of the filler. Biological films can be generated on the surfaces of developed root systems of emergent aquatic plants and floating plants and mixed fillers in the continuous contact process with river sewage.
Preferably, the inner side plate and the outer side plate are both made of wire netting, carbon nanotube electrocatalytic films are attached to the inner side plate and the outer side plate, wires are connected to the inner side plate and the outer side plate, the wires are electrically connected with the storage battery, and the storage battery is electrified for artificial water plants on the inner side plate and the outer side plate.
After the carbon nano tube electrocatalytic film is electrified, the carbon nano tube electrocatalytic film can be combined with water to generate H + And electrons, the product combines with organic matters in the water body to generate CO 2 And H + The organics are oxidized and the product reduced. As a result, the total amount of the carbon nanotube electrocatalytic film is unchanged, and the catalyst is used, so that water is decomposed into oxygen and H + While the organics are oxidized. The mechanism can accelerate the oxidation rate of organic matters, and meanwhile, the electrocatalytic film is not consumed, so that the black and odorous water body can be treated for a long time.
The electro-catalysis can generate hydroxyl free radicals, can oxidize organic matters, improves the biodegradability of the refractory organic pollutants, and enables the refractory organic pollutants in the wastewater to be oxidized into micromolecular substances which are easier to be absorbed and utilized by plants and microorganisms.
Oxygen generated by the electrocatalytic effect can form an oxidation state microenvironment in a reduction state medium of a plant root system area, so that the wetland oxygen environment is improved, and the purification of pollutants is facilitated. The generated electrons move along with the wire mesh under the potential difference formed by the solar panel, so that the reaction is promoted.
Preferably, the second bottom plate is higher than the first bottom plate, and the solar panel is arranged obliquely outwards from the center of the floating island. Water falling on the solar panel flows into the water body along the inclined surface, so that the water is prevented from accumulating on the solar panel for a long time, and on the other hand, the solar panel is also used for receiving solar energy more fully.
Preferably, the bottoms of the outer side plate and the inner side plate are connected with a plurality of hooks for connecting artificial aquatic plants.
Further preferably, the artificial aquatic weed comprises a central rope and an artificial aquatic weed monomer fixed on the central rope, the artificial aquatic weed monomer is carbon fiber, the central rope is a conductive metal wire, and the top end of the central rope is provided with a hook which is connected with the hook in a matching way. The artificial aquatic weed is not easy to deteriorate in the water body, secondary pollution to the water body is not caused, and the artificial aquatic weed is convenient to install and replace through the design of the hooks.
Compared with the prior art, the invention has the beneficial effects that:
the invention combines and affects the electrocatalytic technology, the aquatic plants and the microorganisms in the filler matrix, and promotes the removal of pollutants together with good removal effect.
According to the invention, the emergent aquatic plants, the floating plants and the submerged plants of the upper, middle and lower layers can play roles in settling, adsorbing and filtering impurities in water, and the artificial aquatic plants at the bottom simulate the submerged plants, so that the problem that the submerged plants die due to hypoxia and further pollute water after death is avoided, meanwhile, the water can be more efficiently sucked into a floating island, the loss of pollutants and suspended particles in water can be prevented, and the water can be settled down, so that a good water purifying effect is achieved.
Drawings
FIG. 1 shows a cross-sectional view of the present invention;
FIG. 2 shows the overall structure of the implant;
FIG. 3 shows a top view configuration of an implant;
FIG. 4 shows the overall structure of the present invention;
fig. 5 shows the structure of an artificial aquatic weed.
Detailed Description
The invention will be further described with reference to the drawings and the specific embodiments, but the scope of the invention is not limited thereto.
Example 1
1-5, a three-dimensional ecological floating island for denitrification of water body by combining electrocatalytic and aquatic plants comprises an implant and a floating body which are all in a circular ring structure, wherein the outer diameter of the floating body is larger, the floating body is positioned at the periphery of the implant, and the outer side wall of the implant is detachably connected with the inner side wall of the floating body through a connecting rod 10; the planting body is including being the bottom plate one 1 of ring structure, and bottom plate one center has through-hole 2, and the bottom plate upper surface is connected with medial plate 3 and lateral plate 4, and the lateral plate is located the outer lane of bottom plate, and the medial plate is located the inner circle of bottom plate, and lateral plate and medial plate form the planting groove 5 that is used for planting emergent aquatic plant jointly at the upper surface of body, and the bottom of lateral plate and medial plate is connected with the couple 9 that is used for connecting artifical pasture and water 12 on a plurality of.
The planting groove is of an annular groove structure, and the bottoms of the outer side plate and the inner side plate are connected with a plurality of artificial aquatic plants; the body is including being ring structure's bottom plate two 6, and the upper surface of bottom plate two is provided with solar panel 7, and solar panel is connected with battery 8 electricity, and the battery links firmly on bottom plate two, and the height of bottom plate two is higher than bottom plate one, and solar panel outwards inclines from the chinampa center and sets up.
The planting groove is filled with mixed filler, the mixed filler is a mixture of hollow flower balls and iron carbon, and the mass ratio of the hollow flower balls to the iron carbon particles is 10:1. planting emergent aquatic plants in the mixed filler, and planting floating plants in a water area formed by enclosing a central through hole of the bottom plate and the inner side plate; the outer side plate and the inner side plate are connected with a plurality of carbon fiber artificial aquatic weeds. The first bottom plate is an insulating plastic mesh plate, and the upper aperture of the first bottom plate is smaller than the diameter of the mixed filler.
The inner side plate and the outer side plate are both made of wire netting, carbon nanotube electrocatalytic films are attached to the inner side plate and the outer side plate, wires 11 are connected to the inner side plate and the outer side plate and are electrically connected with a storage battery, the storage battery is powered by artificial pasture and water on the inner side plate and the outer side plate, the artificial pasture and water comprises a central rope 14 and an artificial pasture and water monomer fixed on the central rope, the central rope is a conductive metal wire, and the top end of the central rope is provided with a hook 13 which is connected with a hook in a matched mode.
Example 2
In this embodiment, the planting groove of the device described in embodiment 1 is filled with a mixed filler and planted with emergent aquatic plants, and floating plants are planted in a water area formed by enclosing a central through hole of the bottom plate and the inner side plate; the inner side plate and the outer side plate are not covered with carbon nano tube electrocatalytic films, are not connected with artificial aquatic weeds, and are not electrified. The emergent aquatic plants are reed and acorus calamus, and the floating plant is rush.
Example 3
In this example, on the basis of the above example 2, carbon nanotube electrocatalytic films were coated on the inner and outer side plates, and artificial aquatic weeds were connected to the inner and outer side plates, but the inner and outer side plates were not energized. The artificial aquatic weed is carbon fiber artificial aquatic weed, each aquatic weed is 30cm long, and is completely immersed in water, and the density of the artificial aquatic weed is about 7 aquatic weeds/m 2 。
Example 4
In this embodiment, the inner and outer plates are energized based on embodiment 3.
3 pools and 3 devices according to the invention were set up separately for examples 2-4, and the devices were placed separately in laboratory pools for experiments, and humic acid self-water distribution (0.1 g humic acid dissolved in 1L tap water) was placed under sunlight for two days before the start of the experiment to remove residual chlorine in tap water. From the third day, each device was aerated and plants were placed in a 24-hour run period, which included 30 minutes of water intake, 4 hours of aeration, 10 hours of precipitation, 30 minutes of water drainage, 9 hours of idling, and 15 days of operation was expected.
Before the experiment starts, three water pools are respectively taken for measurement, 750ml of water is respectively taken from each water pool, and 750ml of humic acid with the same concentration is respectively supplemented in each water pool for self-distribution after water taking, so that the water level is ensured not to change greatly. And measuring initial values of total nitrogen, nitrate nitrogen, nitrite nitrogen and ammonia nitrogen in the extracted water sample.
After 15 days, respectively taking water from three pools to measure, respectively taking 750ml of water from each pool, and measuring the total nitrogen, nitrate nitrogen, nitrite nitrogen, ammonia nitrogen, permanganate index and soluble organic nitrogen values in the water body after the floating island is in the experimental pool for 15 days. The measurement results of total nitrogen, nitrate nitrogen, nitrite nitrogen and ammonia nitrogen are shown in table 1, wherein total nitrogen 0 represents the initial value of total nitrogen, total nitrogen 1 represents the final value of total nitrogen in the water body after 15 days, and ammonia nitrogen 0, ammonia nitrogen 1, nitrate nitrogen 0, nitrate nitrogen 1, nitrite nitrogen 0, nitrite nitrogen 1 and COD Mn 0、COD Mn 1. DON0 and DON1 have the same meaning as the total nitrogen 0 and total nitrogen 1. The permanganate index and the measurement result of the dissolved organic nitrogen are shown in table 2.
TABLE 1
TABLE 2
| Examples | COD Mn 0 | COD Mn 1 | COD Mn Removal rate of | DON0 | DON1 | DON removal rate |
| Example 2 | 21.7 | 14.3 | 34.10％ | 2.062 | 1.584 | 23.18％ |
| Example 3 | 21.7 | 11.6 | 46.54％ | 2.062 | 2.514 | -21.92％ |
| Example 4 | 21.7 | 2.6 | 88.02％ | 2.062 | 1.46 | 29.10％ |
As can be seen from the comparison of examples 3 and 4, the electrocatalytic effect has a good promotion effect on the degradation of total nitrogen, ammonia nitrogen, nitrate nitrogen and nitrite nitrogen by the plant and biological film system, and has a better denitrification effect than the plant-microorganism system, and the DON removal effect of example 3 is not good.
The results show that the technical scheme of the embodiment 4 has the best effect of purifying total nitrogen, ammonia nitrogen, nitrate nitrogen and nitrite nitrogen in water, namely, three aquatic plants of emergent aquatic plants, floating plants and artificial aquatic plants are planted, and the effect of purifying the water is better by combining the carbon nano tube electrocatalytic film and the three-dimensional ecological floating island formed by the electrified carbon fiber artificial aquatic plants.
Claims (7)
1. The three-dimensional ecological floating island is characterized by comprising an implant and a floating body which are both in a circular ring structure, wherein the outer diameter of the floating body is larger, the floating body is positioned at the periphery of the implant, and the outer side wall of the implant is detachably connected with the inner side wall of the floating body through a connecting rod; the planting body comprises a first bottom plate with a circular ring structure, a through hole is formed in the center of the first bottom plate, the upper surface of the bottom plate is connected with an inner side plate and an outer side plate, the outer side plate is positioned on the outer ring of the bottom plate, the inner side plate is positioned on the inner ring of the bottom plate, the outer side plate and the inner side plate form a planting groove for planting emergent aquatic plants on the upper surface of the floating body together, and the planting groove is of an annular groove structure;
emergent aquatic plants are planted in the planting groove, floating plants are planted in a water area formed by enclosing a central through hole of the bottom plate and the inner side plate, and a plurality of artificial aquatic plants are connected to the outer side plate and the inner side plate;
the floating body comprises a second bottom plate with a circular ring structure, a solar panel is arranged on the upper surface of the second bottom plate, the solar panel is electrically connected with the storage battery, and the storage battery is fixedly connected to the second bottom plate; the inner side plate and the outer side plate are both made of wire netting, carbon nanotube electrocatalytic films are attached to the inner side plate and the outer side plate, wires are connected to the inner side plate and the outer side plate, the wires are electrically connected with the storage battery, and the storage battery is powered by artificial water plants on the inner side plate and the outer side plate.
2. The three-dimensional ecological floating island for denitrification of water body by combining electrocatalytic and aquatic plants according to claim 1, wherein the planting groove is filled with mixed filler, the mixed filler is a mixture of hollow flower bulbs and iron carbon, and the mass ratio of the hollow flower bulbs to the iron carbon particles is 10:1.
3. the three-dimensional ecological floating island for denitrification of water body by combining electrocatalytic and aquatic plants according to claim 2, wherein the first bottom plate is an insulating plastic mesh plate, and the upper pore diameter of the first bottom plate is smaller than the diameter of the filler.
4. The three-dimensional ecological floating island for denitrification of water body by combining electrocatalytic and aquatic plants according to claim 1, wherein the second bottom plate is higher than the first bottom plate, and the solar panel is arranged obliquely outwards from the center of the floating island.
5. The three-dimensional ecological floating island for denitrification of water body by combining electrocatalytic and aquatic plants according to claim 1, wherein the bottoms of the outer side plate and the inner side plate are connected with a plurality of hooks for connecting artificial aquatic plants.
6. The three-dimensional ecological floating island for denitrification of water body by combining electrocatalytic and aquatic plants according to claim 5, wherein the artificial aquatic plants comprise a central rope and an artificial aquatic plant monomer fixed on the central rope, the central rope is a conductive metal wire, and the top end of the central rope is provided with a hook which is in matched connection with the hook.
7. The three-dimensional ecological floating island for denitrification of water body by combining electrocatalytic and aquatic plants according to claim 6, wherein the artificial aquatic plant monomer is carbon fiber.
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