CN113479992A - Three-dimensional ecological floating island for water denitrification by combining electro-catalysis and aquatic plants - Google Patents

Three-dimensional ecological floating island for water denitrification by combining electro-catalysis and aquatic plants Download PDF

Info

Publication number
CN113479992A
CN113479992A CN202110670124.0A CN202110670124A CN113479992A CN 113479992 A CN113479992 A CN 113479992A CN 202110670124 A CN202110670124 A CN 202110670124A CN 113479992 A CN113479992 A CN 113479992A
Authority
CN
China
Prior art keywords
plate
bottom plate
aquatic plants
side plate
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110670124.0A
Other languages
Chinese (zh)
Other versions
CN113479992B (en
Inventor
袁炘玥
冯骞
佘雨薇
欧子旋
谢志怀
商卫纯
陈昌仁
王东赢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hohai University HHU
Original Assignee
Hohai University HHU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hohai University HHU filed Critical Hohai University HHU
Priority to CN202110670124.0A priority Critical patent/CN113479992B/en
Publication of CN113479992A publication Critical patent/CN113479992A/en
Application granted granted Critical
Publication of CN113479992B publication Critical patent/CN113479992B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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 or fuel cells
    • 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
    • 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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Power Engineering (AREA)
  • Biotechnology (AREA)
  • Botany (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

The invention discloses a three-dimensional ecological floating island combined by electrocatalysis and aquatic plants and used for water denitrification, which comprises a planting body and a floating body, wherein the planting body and the floating body are both in a circular structure; the floating body comprises a second bottom plate in a circular ring structure, a solar panel is arranged on the upper surface of the second bottom plate and electrically connected with a storage battery, and the storage battery is fixedly connected to the second bottom plate. The invention adopts the combination and mutual influence of the electro-catalysis technology, the aquatic plants and the microorganisms in the filler matrix to jointly promote the removal of pollutants, and the removal effect is good.

Description

Three-dimensional ecological floating island for water denitrification by combining electro-catalysis and aquatic plants
Technical Field
The invention belongs to the technical field of water body purification, and particularly relates to a three-dimensional ecological floating island for water body denitrification by combining electro-catalysis and aquatic plants.
Background
The application number is 2015103797621, the invention name 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 mode in the disclosed technical scheme, buoyancy is provided by a floating plate, and a root fixing base is borne to plant the 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 the electro-adsorption and electro-catalytic purification of persistent pollutants, the floating plants which can be planted in the technical scheme are limited, the absorption of the plants on nitrogen and phosphorus is limited, and meanwhile, the floating plants and the submerged plants are easy to die due to oxygen deficiency and cause secondary pollution to a water body, and the technical scheme has great worry about the effect of water body purification.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the three-dimensional ecological floating island for denitrification of the water body by combining electro-catalysis and aquatic plants, and the water body can be better purified by the oxidation of organic matters in the water body, the purification of the aquatic plants and the degradation of microorganisms through the electro-catalysis technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a three-dimensional ecological floating island combined by electro-catalysis and aquatic plants and used for water denitrification comprises a planting body and a floating body which are both in a circular structure, wherein the outer diameter of the floating body is larger, the floating body is positioned at the periphery of the planting body, and the outer side wall of the planting body is detachably connected with the inner side wall of the floating body through a connecting rod; the planting body comprises a first bottom plate in 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 located on the outer ring of the bottom plate, the inner side plate is located 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 in a circular ring structure, a solar panel is arranged on the upper surface of the second bottom plate and electrically connected with a 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, emergent aquatic plants, floating plants and submerged artificial aquatic plants form an upper-middle-lower three-layer three-dimensional structure of the ecological water purification floating island, the root system of the emergent aquatic plants grows downwards through the meshes of the first bottom plate, water is absorbed, and the whole ecological floating island realizes multi-level absorption of pollutants along the depth direction of the water body. The planting body can be dismantled with the body and be connected, conveniently changes alone, installs, makes the volume of whole chinampa increase, reduce with adaptability, and the design of body has increased the area of contact of planting body and the surface of water, has increased the buoyancy of chinampa, sets up solar panel on the body, can be for the chinampa power supply, environmental protection and energy saving.
The emergent aquatic plants and the floating plants have the characteristics of developed root systems and tough stems, have developed roots, and can increase the contact area with the water body by utilizing the developed roots of the emergent aquatic plants and the floating plants to form a densely-distributed filter layer. The characteristic can well settle suspended substances and pollutants in water, and play roles in settling, adsorbing and filtering.
Meanwhile, the aquatic plants need to be supplied with a large amount of organic matters such as nitrogen and phosphorus, and nutrient substances such as nitrogen and phosphorus in the water body can be continuously absorbed to maintain the metabolism of the aquatic plants in the growth process, so that the organic substances in the water are degraded, and the water body is purified. Emergent aquatic plants and floating plants can convey oxygen generated by photosynthesis and oxygen in the atmosphere to the root system, one part of the oxygen is supplied for the respiration requirement of the plants, the other part of the oxygen is released to the root through the root system and is diffused to the surrounding anoxic environment, and an aerobic environment is formed in anoxic fillers, so that the growth and propagation of microorganisms are enhanced, and the decomposition of aerobic microorganisms on organic pollutants in a water body is promoted.
During the growth of aquatic plants, a plurality of microorganisms are generated, some microorganisms can promote the transpiration of plants, the proportion of C, O of the plants is increased, and the synergism of the plants and the synergism of the microorganisms can also promote NH4 +N, TN, the electron transfer in the electrocatalysis device is promoted, the electron transfer can promote the generation of hydrogen ions and oxygen, the hydrogen ions can adjust the pH value in the soil, promote the iron to generate hydrogen evolution corrosion, generate ferrous ions, further oxidize to generate iron ions, promote the growth of plants, improve the abundance of microorganism population and form a virtuous cycle.
The contact area of the artificial aquatic weeds at the bottoms of the planting bodies and the water body is large, a layer of biological film can be formed on the surface of the artificial aquatic weeds, the biological film firstly adsorbs organic matters in the attached water body, the organic matters are decomposed by aerobic bacteria on an aerobic layer and then enter an anaerobic layer for anaerobic decomposition, and a flowing water layer washes away the aged biological film to grow a new biological film so as to repeatedly purify the organic matters in the water body.
The solar panel generates electricity and stores in the battery, and the battery is the artifical pasture and water circular telegram of bottom, can form the electromagnetic field in the water, and the water can accelerate the emergence of aquatic plant seed after the magnetization, improves its germination percentage, increases the developed degree of its root system, can improve the disease resistance and the resistance of aquatic plant. The magnetic field can also increase the photochemical activity of the chloroplast of the aquatic plant, the photosynthetic phosphorylation and the Hill reaction speed are increased, and the nitrate reductase activity is improved, so that the nitrogen metabolism of the aquatic plant is promoted, and the absorption of the aquatic plant to nutrient substances such as nitrogen, phosphorus and the like is improved.
Furthermore, 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 waterweeds.
Preferably, 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. the mixed filler is a mixture of hollow flower balls and iron-carbon particles, and the mass ratio of the hollow flower balls to the iron-carbon particles is 10: 1. the hollow flower ball and the filler matrix of the iron-carbon particles can promote NH pair of plants and microorganisms4 +N, TN, facilitating the formation of a biofilm by the microorganisms.
The iron-carbon particles also form micro-electrolysis reactions in the water, with iron as the anode and carbon as the cathode. Reaction of iron filler to produce high activity Fe2+The ions can hydrolyze and play a good flocculant effect while participating in the electrochemical reaction in the water body, and generate iron complex with pollutants in the water. Iron ions in water can form complex Fe with phosphate ions3(PO4)2·8H2O, etc. to effectively remove phosphorus, and partial secretion of plant root system also has strong flocculation effect.
Furthermore, the first bottom plate is an insulating plastic mesh plate, and the aperture of the first bottom plate is smaller than the diameter of the filler. The developed root systems of emergent and floating plants and the surface of the mixed filler can generate a biological film in the continuous contact process with the river sewage.
Preferably, the inner side plate and the outer side plate are both wire meshes, the carbon nanotube electrocatalytic film is attached to the inner side plate and the outer side plate, both the inner side plate and the outer side plate are connected with wires, the wires are electrically connected with a storage battery, and the storage battery is electrified by artificial waterweeds on the inner side plate and the outer side plate.
After being electrified, the carbon nano tube electrocatalytic film can be combined with water to generate H+And electrons, the product combines with organic matter in the water body to produce CO2And H+The organic is oxidized and the product is reduced. As a result, the total amount of the carbon nanotube electrocatalytic film is not changed, and the carbon nanotube electrocatalytic film acts as a catalyst, and water is decomposed into oxygen and H+While the organic is oxidized. The mechanism can accelerate the oxidation rate of organic matters, simultaneously, the electrocatalytic membrane is not consumed, and the black and odorous water body can be treated for a long time.
Electrocatalysis can generate hydroxyl free radicals, can oxidize organic matters, and improves the biodegradability of organic pollutants difficult to degrade, so that the organic pollutants difficult to degrade in the wastewater are oxidized into micromolecular substances, and the micromolecular substances are easier to be absorbed and utilized by plants and microorganisms.
Oxygen generated by electrocatalysis can form an oxidation-state microenvironment in a reduction-state medium in 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 iron wire mesh under the potential difference formed by the solar panel, and the reaction is promoted to be carried out.
Preferably, the height of the second bottom plate is higher than that of the first bottom plate, and the solar panel is obliquely arranged outwards from the center of the floating island. The water falling on the solar panel flows along the inclined surface to the water body, so that the water is prevented from being accumulated on the solar panel for a long time, and on the other hand, the water is used for more fully receiving the solar energy.
Preferably, the bottom of the outer side plate and the bottom of 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 connected with the hook in a matching manner. The artificial aquatic weeds are not easy to deteriorate in the water body, secondary pollution to the water body cannot be caused, and the artificial aquatic weeds are 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 adopts the combination and mutual influence of the electro-catalysis technology, the aquatic plants and the microorganisms in the filler matrix to jointly promote the removal of pollutants, and the removal effect is good.
The emergent plants, the floating plants and the submerged plants in the upper, middle and lower layers can play roles in settling, adsorbing and filtering impurities in water, and the artificial waterweeds at the bottom simulate the submerged plants, so that the problem that the submerged plants die due to oxygen deficiency and further pollute the water body after death is avoided, the water body can be sucked into the floating island more efficiently, the loss of pollutants and suspended particles in the water can be prevented, the pollutants and the suspended particles can be settled, and a good water purification effect is achieved.
Drawings
FIG. 1 shows a cross-sectional configuration of the present invention;
fig. 2 shows the overall structure of the implant;
fig. 3 shows a top view structure of the implant;
FIG. 4 shows the overall structure of the present invention;
fig. 5 shows the structure of the artificial aquatic weed.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, but the scope of the invention is not limited thereto.
Example 1
Fig. 1-5 show a three-dimensional ecological floating island for denitrification of water by combining electrocatalysis and aquatic plants, which comprises a planting body and a floating body, wherein the planting body and the floating body are both in a circular structure, the outer diameter of the floating body is larger, the floating body is positioned at the periphery of the planting body, and the outer side wall of the planting body is detachably connected with the inner side wall of the floating body through a connecting rod 10; the planting body is including the bottom plate 1 that is the ring structure, and a bottom plate center has through-hole 2, and the bottom plate upper surface is connected with interior plate 3 and outer panel 4, and the outer panel is located the outer lane of bottom plate, and the interior plate is located the inner circle of bottom plate, and outer panel and interior plate form the planting groove 5 that is used for planting emergent aquatic plants jointly at the upper surface of body, and the bottom of outer panel and interior 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 waterweeds; the body is including the two bottom plates 6 that are the ring structure, and the upper surface of the two bottom plates is provided with solar panel 7, and solar panel is connected with battery 8 electricity, and the battery links firmly on the two bottom plates, and the bottom plate is two highly be higher than bottom plate one, and solar panel leans out from floating island center and sets up.
The planting groove is filled with mixed filler, and mixed filler is the mixture of hollow flower ball and iron carbon, and its hollow flower ball is 10 with the mass ratio of iron carbon granule: 1. emergent aquatic plants are planted in the mixed filler, and floating plants are planted in a water area formed by the enclosing of 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 wire nets, carbon nano tube electro-catalysis 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, the wires are electrically connected with a storage battery, the storage battery is electrified by artificial aquatic weeds on the inner side plate and the outer side plate, the artificial aquatic weeds comprise a central rope 14 and artificial aquatic weeds monomers 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 connected with the hook in a matching manner.
Example 2
In this embodiment, a mixed filler is filled in a planting groove of the device described in embodiment 1, emergent aquatic plants are planted, and floating plants are planted in a water area formed by enclosing a central through hole of a bottom plate and an inner side plate; the inner and outer side plates are not coated with carbon nano tube electro-catalysis films, are not connected with artificial aquatic weeds, and are not electrified. The emergent aquatic plant is reed and acorus calamus, and the floating plant is rush.
Example 3
In this example, in addition to example 2, the inner and outer plates were coated with carbon nanotube electrocatalytic films, and the inner and outer plates were connected with artificial aquatic weeds, but the inner and outer plates were not electrified. The artificial aquatic weeds are carbon fiber artificial aquatic weeds, each aquatic weed is 30cm long and is completely immersed in water, and the density of the artificial aquatic weeds is about 7/m2。
Example 4
In this embodiment, the inner and outer side plates are energized based on embodiment 3.
3 pools and 3 devices of the invention were set up for examples 2-4, respectively, and the devices were placed in the laboratory pools for experiments, and two days before the start of the experiment, self-distributed humic acid water (0.1g humic acid dissolved in 1L tap water) was placed in the sun to remove residual chlorine in the tap water. From the third day, aerating each device and putting plants, wherein the operation period is 24 hours, the operation period comprises water inflow for 30min, aeration for 4h, sedimentation for 10h, water drainage for 30min and idling for 9h, and the operation is expected to be carried out for 15 days.
Before the experiment is started, water in the three water tanks is taken for determination, 750ml of water is taken from each water tank, 750ml of humic acid self-prepared water with the same concentration is supplemented in each water tank after water is taken, and the water level is guaranteed not to change greatly. And (4) measuring initial values of total nitrogen, nitrate nitrogen, nitrite nitrogen and ammonia nitrogen in the taken water sample.
And after 15 days, respectively taking the water in the three water tanks for determination, respectively taking 750ml of water from each water tank, and determining the values of total nitrogen, nitrate nitrogen, nitrite nitrogen, ammonia nitrogen, permanganate index and soluble organic nitrogen in the water body after the floating island is in the experimental water tank 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, ammonia nitrogen 0, ammonia nitrogen 1, nitrate nitrogen 0, nitrite nitrogen 1 and CODMn0、COD Mn1. The meanings of DON0 and DON1 are the same as those of the total nitrogen 0 and the total nitrogen 1. The permanganate index and the measurement result of soluble organic nitrogen are shown in table 2.
TABLE 1
Figure BDA0003116258050000061
TABLE 2
Examples CODMn0 COD Mn1 CODMnRemoval rate 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％
By comparing examples 3 and 4, it can be seen that electrocatalysis has a good promoting effect on the degradation of total nitrogen, ammonia nitrogen, nitrate nitrogen and nitrite nitrogen by a plant and biological membrane system, and has a better denitrification effect than a plant-microorganism system, and example 3 has a poor DON removal effect.
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 the water body, namely three aquatic plants, namely emergent aquatic plants, floating plants and artificial aquatic weeds, are planted, and the three-dimensional ecological floating island formed by combining the carbon nanotube electrocatalytic membrane and the electrified carbon fiber artificial aquatic weeds has a better water body purifying effect.

Claims (9)

1. The three-dimensional ecological floating island is characterized by comprising a planting body and a floating body, wherein the planting body and the floating body are both in a circular ring structure, the outer diameter of the floating body is larger, the floating body is positioned at the periphery of the planting body, and the outer side wall of the planting body is detachably connected with the inner side wall of the floating body through a connecting rod; the planting body comprises a first bottom plate in 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 located on the outer ring of the bottom plate, the inner side plate is located 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 in a circular ring structure, a solar panel is arranged on the upper surface of the second bottom plate and electrically connected with a storage battery, and the storage battery is fixedly connected to the second bottom plate.
2. The stereoscopic ecological floating island for denitrification of water body combined with the electro-catalysis and the aquatic plants according to claim 1, characterized in that the planting groove is filled with mixed filler, emergent aquatic plants are planted in the mixed filler, and a central through hole of the bottom plate and the inner side plate enclose to form a water area in which the floating plants are planted; the outer side plate and the inner side plate are connected with a plurality of artificial waterweeds.
3. The stereoscopic ecological floating island combined with electrocatalysis and aquatic plants for denitrification of water body according to claim 2, wherein 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.
4. the stereoscopic ecological floating island for denitrification of water body combined with electrocatalysis and aquatic plants according to claim 3, wherein 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.
5. The stereoscopic ecological floating island combined with electrocatalysis and aquatic plants for denitrification of water body according to claim 2, wherein the inner plate and the outer plate are made of wire netting, the inner plate and the outer plate are attached with carbon nanotube electrocatalytic films, the inner plate and the outer plate are both connected with wires, the wires are electrically connected with storage batteries, and the storage batteries are used for electrifying the artificial aquatic plants on the inner plate and the outer plate.
6. The stereoscopic ecological floating island for denitrification of water body combined with the electro-catalysis and the aquatic plants as recited in claim 5, wherein the second bottom plate is higher than the first bottom plate, and the solar panel is inclined outwards from the center of the floating island.
7. The stereoscopic ecological floating island combined with electrocatalysis and aquatic plants for denitrification of water body according to claim 5, wherein the bottom of the outer side plate and the inner side plate are connected with a plurality of hooks for connecting artificial aquatic plants.
8. The stereoscopic ecological floating island combined with the electro-catalysis and the aquatic plants for the denitrification of the water body as recited in claim 7, wherein the artificial aquatic plant comprises 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 matched and connected with the hook.
9. The stereoscopic ecological floating island for denitrification of water body combined with electro-catalysis and aquatic plants according to claim 8, characterized in that the artificial aquatic weed monomer is carbon fiber.
CN202110670124.0A 2021-06-16 2021-06-16 Three-dimensional ecological floating island combining electrocatalytic and aquatic plant for denitrification of water body Active CN113479992B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110670124.0A CN113479992B (en) 2021-06-16 2021-06-16 Three-dimensional ecological floating island combining electrocatalytic and aquatic plant for denitrification of water body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110670124.0A CN113479992B (en) 2021-06-16 2021-06-16 Three-dimensional ecological floating island combining electrocatalytic and aquatic plant for denitrification of water body

Publications (2)

Publication Number Publication Date
CN113479992A true CN113479992A (en) 2021-10-08
CN113479992B CN113479992B (en) 2023-10-20

Family

ID=77935510

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110670124.0A Active CN113479992B (en) 2021-06-16 2021-06-16 Three-dimensional ecological floating island combining electrocatalytic and aquatic plant for denitrification of water body

Country Status (1)

Country Link
CN (1) CN113479992B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110011780A1 (en) * 2006-12-28 2011-01-20 Yumin Izumo System for improving total water qualities in eutrophicated and contaminated water area utilizing water purifying functions of various plants and microorganisms
CN107473389A (en) * 2017-09-01 2017-12-15 北京科技大学 Couple microorganism and light electrolysis combination floating bed device and the method for handling sanitary sewage
CN107879479A (en) * 2017-12-15 2018-04-06 华中科技大学 The dimension purification combined ecological floating island of one kind five
CN109231469A (en) * 2018-10-22 2019-01-18 江苏澳洋生态园林股份有限公司 A kind of solar energy water body restoration of the ecosystem floating bed system
CN209024276U (en) * 2018-09-20 2019-06-25 南京林业大学 A kind of novel combination type is biological floating bed
CN211595191U (en) * 2019-12-19 2020-09-29 南京信息工程大学 Combined type chinampa wetland purifier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110011780A1 (en) * 2006-12-28 2011-01-20 Yumin Izumo System for improving total water qualities in eutrophicated and contaminated water area utilizing water purifying functions of various plants and microorganisms
CN107473389A (en) * 2017-09-01 2017-12-15 北京科技大学 Couple microorganism and light electrolysis combination floating bed device and the method for handling sanitary sewage
CN107879479A (en) * 2017-12-15 2018-04-06 华中科技大学 The dimension purification combined ecological floating island of one kind five
CN209024276U (en) * 2018-09-20 2019-06-25 南京林业大学 A kind of novel combination type is biological floating bed
CN109231469A (en) * 2018-10-22 2019-01-18 江苏澳洋生态园林股份有限公司 A kind of solar energy water body restoration of the ecosystem floating bed system
CN211595191U (en) * 2019-12-19 2020-09-29 南京信息工程大学 Combined type chinampa wetland purifier

Also Published As

Publication number Publication date
CN113479992B (en) 2023-10-20

Similar Documents

Publication Publication Date Title
CN102491515B (en) Three-dimensional electrode bio-membrane system used for processing high-ammonium-nitrogen wastewater with low carbon-nitrogen ratio
CN103058383B (en) A kind of multifunctional modular chinampa for contaminated river lake in-situ immobilization
CN105152351A (en) Photoelectric artificial wetland and application thereof
CN109231469B (en) Solar energy aquatic body ecological remediation floats bed system
CN101691257A (en) Submerged ecological bed for purifying eutrophic waterbody and application thereof
CN110092475A (en) A kind of iron-carbon micro-electrolysis coupling submerged plant module and its application
CN112607864A (en) Electrochemical performance-enhanced bacteria-algae membrane aeration biomembrane reactor system and application thereof
CN112174293A (en) Electric-enhanced bioretention system for removing low-concentration antibiotics
CN216808519U (en) Drinking water pretreatment system applying microorganisms and ecological purification process
CN203256023U (en) Tail water deep processing aeration-type ecological floating island with bamboo filament filler substrate
Hedayati Moghaddam et al. A review over diverse methods used in nitrogen removal from wastewater
CN105417901B (en) A kind of sewage-treatment plant and a kind of sewage water treatment method
CN113479992B (en) Three-dimensional ecological floating island combining electrocatalytic and aquatic plant for denitrification of water body
CN213388232U (en) Electric-enhanced bioretention system for removing low-concentration antibiotics
CN217446281U (en) Biofilm combination system for accurately regulating and controlling pond water quality
CN213977142U (en) Combined ecological floating island
CN112093994B (en) CW-MFC device and method for reducing methane and ammonia nitrogen pollution
CN212770083U (en) Unpowered water purification device
CN211226797U (en) Device for purifying black and odorous water body by using combined biotechnology
CN110980956B (en) Microbial fuel cell coupled constructed wetland U-shaped device and operation method
CN113860482A (en) Method for treating livestock and poultry wastewater by coupling constructed wetland with microbial cell
CN209442737U (en) A kind of Inner electrolysis submerged plant bed apparatus
CN105399203A (en) Lateral subsurface flow wetland treatment device and treatment method capable of realizing ANAMMOX denitrification
CN111825208A (en) Multistage aerobic sewage treatment combined process
CN110683711A (en) Device and method for purifying black and odorous water body by using combined biotechnology

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant