CN112919639B - Multifunctional combined ecological floating bed - Google Patents

Abstract

The invention relates to the field of water ecological environment restoration and protection, in particular to a multifunctional combined ecological floating bed. The invention is provided with a floating plant layer, a microorganism layer and a submerged plant layer from top to bottom in sequence, and the periphery of the floating plant layer is provided with a medicine throwing box; the microorganism layer is provided with a loading piece, the loading piece is provided with loading fibers, and the length of the loading fibers is L ₁ The total length of the load piece is L, L: l (L) ₁ =5-20. The invention can form a multi-level dynamic system of floating plants, microorganisms and submerged plants, can effectively repair water bodies, strengthen the water body purification pollution capacity, can be combined in various ways according to actual conditions so as to promote the water bodies to form a good ecological system, is convenient to splice, is convenient to transport, reduces transport cost, beautifies landscapes, and increases the suitability for environment living.

Description

A multifunctional combined ecological floating bed

technical field

The invention relates to the field of water ecological environment restoration and protection, in particular to a multifunctional combined ecological floating bed.

Background technique

Eutrophication of water body is a type of organic pollution. Excessive nutrients promote the proliferation of phytoplankton and aquatic plants in the water to form algal blooms. After the algae die, they are deposited on the bottom of the water and are decomposed by microorganisms. At the same time, they consume a large amount of dissolved oxygen, causing fish to die Lack of oxygen and a large number of deaths. In recent years, the eutrophication of water bodies in my country has developed rapidly, and the problem of eutrophication is serious. Moreover, the distribution of eutrophication in water bodies is different. In these areas, the nutrient level of water bodies is relatively low; the environment of lakes and reservoirs is very fragile, and the eutrophication of water bodies is likely to intensify further.

At present, the remediation of eutrophic water body is mainly divided into physical remediation, chemical remediation and biological remediation. Physical restoration mostly realizes the transfer of pollutants and avoids large-scale pollution, but it cannot improve the structure of aquatic ecosystems while restoring water bodies, and thus cannot improve the self-purification capacity of water bodies. Chemical remediation has the advantages of simple operation and quick effect, while biological remediation has the advantages of simple facilities, low investment, beautifying the environment, and wide application range.

In the chemical remediation of eutrophic water bodies, the use of passivators has received widespread attention in recent years. Passivators stabilize pollutants in the sediment or react to produce other non-toxic and harmless substances through the combined action of physics and chemistry. substances, so as to achieve the purpose of controlling the release of pollutants. In the bioremediation of eutrophic water bodies, some aquatic plants have the ability to purify suspended solids, chlorides, sulfates, etc. in the water, and have a high removal rate of nutrients such as nitrogen and phosphorus in the water body, and at the same time have the aesthetics of beautifying the water body landscape value.

Chinese patent document CN110240282A discloses an ecological floating bed, which includes a floating bed body. A ceramsite layer is arranged on the floating bed body. Plants are planted on the floating bed body through the ceramsite layer. Water-permeable cloth and planting can also be added between the floating bed body and the ceramsite layer. Soil, plants are planted on the planting soil through the ceramsite layer, the invention has a single restoration method for water bodies, only biological restoration, and the formed ecosystem is single and easily affected by external factors.

Chinese patent document CN108249591A discloses an ecological floating bed for purifying water, which consists of three parts: floating bed carrier, planting basket and aquatic plants. The number of plants planted in this invention is fixed, and the microbial layer formed outside the activated carbon fiber strip is too close to the water surface , not suitable for areas with higher or lower temperatures.

Chinese patent document CN110835163A discloses a combined ecological floating bed. The floating bed unit floats on the water body. The floating bed unit includes a hexahedron-shaped frame. Emergent plants are placed on the upper frame, and a net is arranged on the lower layer of the frame. Submerged plants are placed on the net. The distance between the upper and lower layers of this invention is fixed, and it is not easy to disassemble, which causes inspection and maintenance inconvenience to a certain extent.

In summary, the current patent still has the problem of a single repair method.

Contents of the invention

1. The problem to be solved

Aiming at the single restoration method of the ecological floating bed in the prior art, the present invention provides a multi-functional combined ecological floating bed, which uses aquatic plants and a passivation agent in combination, and uses a load member equipped with a load fiber at the same time to further expand passivation. The diffusion area of the agent; the present invention adopts the method of combining chemical restoration and biological restoration, which has higher utilization value compared with traditional ecological floating beds, and solves the problem of single ecological floating bed restoration methods in the prior art.

2. Technical solution

To achieve the above object, the present invention adopts the following technical solutions:

The invention provides a multifunctional combined ecological floating bed, which is sequentially provided with a floating plant layer, a microbial layer and a submerged plant layer from top to bottom, and a drug delivery box is provided around the floating plant layer; the microbial layer is provided with a loading member, Loading fibers are arranged on the loading part, the length of the loading fibers is L ₁ , and the total length of the loading part is L, L: L ₁ =5-20.

Preferably, the loading part includes a loading section, an oxygen slow-release section and a diffusion section; the oxygen slow-release section is arranged between the loading section and the diffusion section, and the oxygen slow-release section is provided with an oxygen slow-release material; the loading section and the diffusion section are both provided with load fiber.

Preferably, the plant planting density of the floating plant layer is smaller than the plant planting density of the submerged plant layer.

Preferably, a deactivator is provided in the drug delivery box.

Preferably, an injection hole is provided at the bottom of the drug delivery box, and/or an automatic controller is provided inside the drug delivery box for controlling drug delivery.

Preferably, the floating plant layer is planted with floating plants, and the floating plants are one or more of water lilies, water lilies, and gorgons, and/or the submerged plant layer is planted with submerged plants, and the submerged plants are scallops , Hydrilla verticillium, Foxtail algae in one or more.

Preferably, a fixed pile is also included, and the outer peripheral sides of the floating plant layer, the microbial layer and the submerged plant layer are all detachably connected to the fixed pile through the installation part.

Preferably, one or both of calcium peroxide and magnesium peroxide are loaded on the oxygen slow-release material.

Preferably, the dosing frequency of the passivating agent is 1-3 times per week, and the dosage of the passivating agent is 0.2-0.6g/time.

Preferably, the floating plant layer is provided with a planting groove and a planting substrate, and the bottom of the planting groove is provided with a water-permeable hole; the ratio of the particle size of the planting substrate to the aperture of the water-permeable hole is 1.2-1.3.

3. Beneficial effect

The multifunctional combined ecological floating bed of the present invention has the following advantages:

(1) A multifunctional combined ecological floating bed of the present invention uses aquatic plants and passivating agents in combination, and the middle part of the floating bed is provided with a load member with a load fiber structure, and the medicine dropped into the floating plant layer moves to the load fiber with the water flow When it is up, the loaded fiber sloshing with the water can increase the diffusion area of the drug and enhance the use effect of the drug; the present invention adopts the combination of chemical repair and biological repair, which has higher utilization value compared with the traditional ecological floating bed. The problem of single ecological floating bed restoration method in the prior art is solved.

(2) In the multifunctional combined ecological floating bed of the present invention, the oxygen slow-release material can provide dissolved oxygen for the water body in a certain area, so that the water body forms an anaerobic zone, anoxic zone and aerobic zone, which is beneficial to nutrients such as nitrogen and phosphorus. The removal of substances can also be chemically repaired through automatic control using a passivator, and the repair methods are simple and diverse.

(3) A kind of multifunctional combined ecological floating bed of the present invention, the plant planting type, planting quantity and planting density of the present invention can all be adjusted independently, help to adapt to different water bodies, form good landscape, and floating water plant layer, microorganism The three layers of the submerged plant layer and the submerged plant layer can be split, which is beneficial to adapt to water bodies of different water depths.

(4) A multifunctional combined ecological floating bed of the present invention, the fixed piles are provided with fixed points of different heights, and the iron wire and the iron rod, and the iron rod and the fixed pile can be disassembled, which is beneficial to the inspection and repair of the ecological floating bed in the later stage, and can effectively solve the problem. The existing problems of the ecological floating bed at this stage have great advantages.

(5) A multifunctional combined ecological floating bed of the present invention involves two major aspects of chemical remediation and biological remediation, because the ecological impact of only chemical remediation is relatively large and the budget is relatively high, while the remediation cycle of only biological remediation is long and susceptible to Influenced by the external environment, the present invention effectively combines the two, and can better repair the eutrophic water body.

(6) A kind of multifunctional combined type ecological floating bed of the present invention, the plant (comprising floating water plant and submerged water plant) that adopts is selected from one or more of different plants, has increased its ecological diversity, is conducive to maintaining the ecological floating bed health.

(7) A multifunctional combined ecological floating bed of the present invention can be combined with different layers, and its height can be adjusted at the same time, which is conducive to the adaptation of the ecological floating bed to the water body, and also helps to meet the submerged plant layer in the lower layer of the floating bed The need for light.

Description of drawings

Fig. 1 is the plan view of multifunctional combined type ecological floating bed of the present invention;

Fig. 2 is the front view of the multifunctional combined type ecological floating bed of the present invention;

Fig. 3 is a bottom view of the drug delivery box of the present invention.

In the picture:

100. Floating plant layer; 110. Ecological floating bed monomer; 111. Planting tank; 112. Water permeable hole; 120. Buckle; 130. Connector I;

200. Microbial layer; 210. Connecting rope; 220. Loading section; 230. Oxygen slow-release section; 231. Oxygen slow-release material; 240. Diffusion section; 250. Loading fiber;

300, submerged plant layer; 310, connector II; 320, planting unit;

400. Drug delivery box; 410. Automatic controller; 420. Delivery hole;

500, a fixing pile; 510, an installation part.

Detailed ways

The present invention is described in detail below with reference to the accompanying drawings and exemplary embodiments. However, it should be understood that various modifications and changes can be made without departing from the scope of the present invention as defined in the appended claims. The detailed description and drawings are to be regarded as illustrative only and not restrictive, and any such modifications and variations, if any, are intended to fall within the scope of the invention as described herein. In addition, the background art is intended to illustrate the research and development status and significance of the present technology, and is not intended to limit the present invention or the application and the application field of the present invention.

Example 1

A multifunctional combined ecological floating bed of the present invention is sequentially provided with a floating plant layer 100 , a microbial layer 200 and a submerged plant layer 300 from top to bottom, and a drug delivery box 400 is provided around the floating plant layer 100 . Not only that, the side of the floating bed of the present invention is also provided with fixed piles 500, and the fixed piles 500 are provided with several installation parts 510 along the length direction, and the outer peripheral sides of the floating plant layer 100, the microbial layer 200 and the submerged plant layer 300 pass through the installation parts 510. It is detachably connected with the fixed pile 500, so that the floating plant layer 100, the microbial layer 200 and the submerged plant layer 300 are sequentially arranged from top to bottom. The fixed pile 500 of the present invention is inserted into the bottom mud, and the insertion depth needs to ensure that the ecological floating bed is not washed away by the water flow, to ensure a certain stability, and to be 30-50 cm higher than the water level, which is convenient for the inspection and maintenance of the ecological floating bed. The fixed pile 500 is provided with mounting parts 510 of different heights, and the flexible combination of the floating plant layer 100, the microbial layer 200 and the submerged plant layer 300 is performed according to the actual water body conditions, so as to meet the needs of water bodies of different water depths. If it is necessary to adjust the heights of different layers, the layer can be separated from the mounting portion 510 of the fixing pile 500 and then fixed to the mounting portion 510 of a different height.

As shown in FIG. 1 , the floating plant layer 100 is composed of a plurality of ecological floating bed monomers 110 , and the ecological floating bed monomers 110 are preferably made of PVC. The ecological floating bed monomers 110 are detachably connected by buckles 120, etc. The ecological floating bed monomer 110 located outside the floating plant layer 100 is provided with a connector I130, and the floating plant layer 100 is connected to the installation part of the fixed pile 500 through the connector I130 510 are connected. The connector I 130 in the present invention can be iron wire, steel wire, or other linear or strip-shaped objects with certain tensile strength. The ecological floating bed monomer 110 is provided with a planting tank 111 and a planting matrix, and the bottom of the planting tank 111 is provided with a permeable hole 112, and the aperture of the permeable hole 112 is preferably 1 cm. The planting matrix is generally a granular matrix, such as ceramsite, etc., and the particle size of the planting matrix is 12-15mm. Preferably, the ratio of the particle size of the planting matrix to the pore size of the permeable holes 112 is 1.2-1.3, so that the planting matrix not only has good support for plants, but also has good water permeability. In order to ensure the buoyancy required for the normal work of the floating bed, the total weight of the planting substrate in a single planting groove 111 is ≤1kg. Floating plants are planted in the planting tank 111, generally selected from one or more of water lilies, water lilies, and Gorgon, and the planting density of floating plants is 2-4 plants/m ² .

As shown in FIG. 2 , the microbial layer 200 is provided with a load element, on which a load fiber 250 is disposed, the length of the load fiber 250 is L ₁ , and the total length of the load element is L, L: L ₁ =5-20. To further illustrate, the loading element includes a loading section 220 , an oxygen slow-release section 230 and a diffusion section 240 , and the oxygen slow-release section 230 is disposed between the loading section 220 and the diffusion section 240 . The loading section 220 is used for loading microorganisms, and there are loading fibers 250 thereon, generally made of porous elastic filler (such as polypropylene resin PP), and its porous structure is suitable for the attachment of microorganisms. Oxygen slow-release section 230 is provided with oxygen slow-release material 231. According to the concentration distribution of dissolved oxygen, it is preferably set in the middle of the load to provide dissolved oxygen for the system, which can reduce the stench caused by the lack of oxygen in the water body. According to the concentration of dissolved oxygen The concentration distribution is different. The lower functional ecological area can be divided into anaerobic area, anoxic area and aerobic area. The microbial flora is rich and organically coordinated with each other. It has high impact load resistance and has the ability to simultaneously remove organic matter, nitrogen and phosphorus. The function can effectively degrade the pollutants in the polluted water body, and improve the effect of nitrogen and phosphorus removal. The oxygen slow-release material 231 is made of calcium peroxide or magnesium peroxide, and is preferably spherical. The oxygen slow-release material 231 slowly releases oxygen into the water to form anaerobic zones, anoxic zones and aerobic zones, and strengthen the action of microorganisms in the water body. , increase the effect of nitrogen and phosphorus removal, and can also reduce the stench caused by the lack of oxygen in the water body, and beautify the environment to a certain extent. The number of oxygen slow-release materials 231 is adjusted according to the depth of the actual water body: when the water depth is less than or equal to 2m, set 3-5 oxygen slow-release materials 231; when the water depth is 2-4m, set 6-10 oxygen slow-release materials Material 231; when the water depth is greater than or equal to 4m, set 11-18 oxygen slow-release materials 231. The diffusion section 240 is used to diffuse medicine, and the diffusion section 240 can also be used to load microorganisms. The diffusion section 240 is provided with a load fiber 250, and the load fiber 250 of the diffusion section 240 may be made of porous elastic filler, or other non-porous flexible material.

To further illustrate the installation method of the load member of the present invention, the microbial layer 200 is provided with a connecting rope 210, and the end of the load section 220 of the present invention away from the oxygen slow-release section 230 is detachably connected to the connecting rope 210, or the load section 220 forms a certain length The unit fiber bundles are tied to the connecting rope 210, and then the connecting rope 210 is connected to the mounting part 510 of the fixing pile 500, and then fixed to the fixing pile 500. The length and suspension height of the load member of the present invention shall be subject to the normal growth of floating plants, the normal attachment of microorganisms and the normal growth of submerged plants.

The submerged plant layer 300 is disposed under the microbial layer 200 for planting submerged plants. The submerged plants planted in the submerged plant layer 300 are selected from one or more of the submerged plants, Hydra verticillium, and Foxtail algae, and the plant planting density is greater than the plant planting density of the floating plant layer 100, and the planting density is preferably 5 - 8 plants/m ² . The submerged plant layer 300 includes a plurality of detachably connected planting units 320 , and the submerged plants are planted in the planting units 320 . The submerged plant layer 300 is provided with a connecting piece II 310 , and the submerged plant layer 300 is detachably connected to the mounting portion 510 of the fixing pile 500 through the connecting piece II 310 . The connector II 310 of the present invention can be iron wire, steel wire, or other linear or strip-shaped objects with certain tensile strength.

According to the adaptability and absorption capacity of different floating plants and submerged plants to the concentration of nitrogen and phosphorus, various plants can be placed in multiple ecological floating beds during the use of the river channel. Not only that, the combination of special floating plants and submerged plants can produce better technical effects. The plant combination of the present invention is preferably one or more of water lily+Sea japonica, water lily+Hydrophyllum verticillium, Gorgon fruit+Hyrrhiza chinensis. Water lilies can absorb mercury, lead, phenol and other toxic substances in water, and can also absorb and filter particulate matter in water; water lily is strong in nature, strong in adaptability, cold and heat resistant, turns yellow in winter, and gradually recovers in spring; Gorgon can effectively remove nitrogen in water Nutrients such as phosphorus can reduce the degree of eutrophication in water bodies; the effect of absorbing nitrogen and phosphorus from kohlrabi is very good, and can effectively decompose organic matter in water bodies and sediments; , and strong vitality, cold resistance, high temperature resistance; Foxtail Algae can not only absorb nutrients such as nitrogen and phosphorus in the sediment through the roots, but also absorb nutrients in the water through the stems and leaves.

(锁磷剂)，该钝化剂由95％的膨润土和5％的稀土镧组成。The drug delivery box 400 is installed on the outermost ring of the ecological floating bed by means of buckles, etc., and is used to inject the medicine required for the treatment of pollutants into the polluted water body. There is an automatic controller 410 for controlling drug delivery. The medicine used in the invention is a passivating agent, which has an excellent pollutant treatment effect. The dosing frequency of the passivating agent is determined according to the actual conditions of the local water body and economy, preferably 1-3 times a week, and the dosage of the passivating agent is 0.2-0.6g/time, using gravity dosing. Further explanation, the passivating agents used in the present invention are all commercially available passivating agents, such as inorganic passivating agents, lime+biomass charcoal, diatomaceous earth, phosphate rock powder and the like. The present invention preferably uses modified clay passivators such as those developed by the Australian Commonwealth Scientific and Industrial Organization (CSIRO) in the 1990s

(Phosphorus locking agent), the passivating agent is composed of 95% bentonite and 5% rare earth lanthanum.

Compared with some contaminated sediment disposal technologies, passivation treatment has the advantages of good treatment effect, short treatment time, suitable economy and wide application range for the treatment of contaminated sediment. In situ passivation technology is considered to be in situ, economical and effective. It is one of the unique and ecological sediment pollution control technologies, suitable for the treatment of phosphorus, heavy metals and other contaminated sediments, especially the technology of aluminum salt passivation phosphorus has been applied in many foreign lakes and achieved success. Therefore, the present invention uses the passivation agent in combination with the ecological floating bed, and adopts the combination of chemical restoration and biological restoration, so as to better restore the eutrophic water body.

It is further explained that the passivation agent combines the soluble active phosphorus SRP in the water body during the settlement process to reduce the phosphorus concentration in the water body; after the passivation agent settles, it covers the surface layer of the sediment to form a passivation layer. When PO ₄ ^3- is released; the passivator on the surface can quickly and effectively capture PO ₄ ^3- to form a stable compound, which is less affected by environmental changes (redox, pH changes, etc.), so as to inhibit the release of phosphorus from sediments role. On the one hand, the passivation agent can bind PO ₄ ^3- in the water column during the process of sedimentation from the surface of the water body to the sediment, thereby reducing the concentration of SRP in the water body; on the other hand, the passivation layer inhibits the phosphorus in the sediment from released, further reducing the phosphorus in the water. The main effect of ecological floating bed on water purification is to use the roots of plants to absorb eutrophication substances in the water, such as total phosphorus, ammonia nitrogen, organic matter, etc., so that the nutrients in the water body can be transferred, and the water body will be relieved due to closure or insufficient self-circulation. Odor, eutrophication phenomenon. The invention combines the passivation agent with the ecological floating bed, combines the rapidity and high efficiency of the passivation agent chemical restoration, and the stability and beauty of the ecological floating bed biological restoration, and can continuously and stably repair the eutrophic water body for a long time, which is beneficial to the water body overall processing.

In this embodiment, the width of the ecological floating bed of the present invention accounts for about one-third of the width of the river channel, and is fixed near the shore by fixing piles 500 . The fixed pile 500 has a diameter of 30 cm, and a mounting part 510 is provided every 20 cm along the length direction to meet the needs of water bodies with different water depths. The floating plant layer 100 and the submerged plant layer 300 are cuboids with a length of 50 cm, a width of 50 cm, and a height of 10 cm. The planting groove 111 of the floating plant layer 100 is a truncated circular groove with a top diameter of 30 cm, a bottom diameter of 20 cm, and a height of 30 cm. It is made of PVC material. The bottom of the planting tank 111 is provided with a permeable hole 112 with an inner diameter of 1 cm to facilitate the material exchange of water in the planting tank 111 . The supporting parts of the microorganism layer 200 are made of synthetic fiber material, and the supporting parts with a length of 6 cm are tied to the connecting rope 210. The distance between each bundle of supporting parts is 25 cm to provide space for the attachment and growth of microorganisms. The oxygen slow-release section 230 is set in the middle of the microbial layer and is a sphere with a diameter of 10 cm. The drug delivery box 400 is a cuboid with a length of 50 cm, a width of 15 cm, and a height of 10 cm. The bottom is provided with a diameter of 1 cm and an automatically controlled injection hole 420. , by automatically controlling the opening and closing of the injection hole 420, the dosing of the passivating agent is performed. The connector I 130 , the connecting rope 210 and the connector II 310 in this embodiment are all made of iron wire with a diameter of 0.5 cm, and are connected to the installation part 510 on the fixed pile 500 .

The multifunctional combined ecological floating bed of the present embodiment was carried out in the polluted water body for restoration test, and the overlying water and bottom mud collected from the same eutrophic water body were set as small ponds for specific comparison experiments, which were set to 3 groups according to the size of the area. They are 2m ² , 4m ² , and 8m ² , and are numbered No. 1, No. 2, and No. 3 respectively. No. 1 installs 2 ecological floating bed monomers 110 of the present invention and 6 drug delivery boxes 400, equal-area microbial layers 200 and submerged plant layers 300, and No. 2 installs 4 ecological floating bed monomers 110 and 8 of the present invention Drug delivery box 400, equal-area microbial layer 200 and submerged plant layer 300, 8 ecological floating bed monomers 110 of the present invention and 12 drug delivery boxes 400, equal-area microbial layer 200 and submerged plant layer of the present invention are installed on the 3rd 300. A passivator is housed in the drug delivery box 400, and the plant combinations are all made of water lily + sunflower, and the test time is 60 days. Water samples are taken every day to measure various water quality indicators. The impact of the inventive device on various water quality indicators in the eutrophic water body, the results are as shown in table 1:

Table 1 Removal rate of different pollutants

亚硝态氮

氨氮

总氮(TN)、总磷(TP)、化学需氧量(COD)的去除率最高分别达70.1％、56.9％、40.8％、56.4％、83.6％、43.8％，且试验期间，微生物生长状况良好，未出现丝状膨胀等异常现象，浮水植物和沉水植物均生长良好，同时形成一定的景观作用，对水体起到了一定的美观作用。After the multifunctional combined ecological floating bed treatment of the present embodiment, the nitrate nitrogen

Nitrite nitrogen

Ammonia nitrogen

The removal rates of total nitrogen (TN), total phosphorus (TP) and chemical oxygen demand (COD) reached 70.1%, 56.9%, 40.8%, 56.4%, 83.6%, and 43.8%, respectively. Good, no abnormal phenomena such as filamentous expansion, floating plants and submerged plants grow well, and at the same time form a certain landscape effect, which has a certain aesthetic effect on the water body.

Comparative example 1

The basic content of this comparative example is the same as that of Example 1. The difference is that this comparative example is a comparative experiment of Example 1. According to the size of the pond area, it is divided into 3 groups, namely 2m ² , 4m ² , and 8m ² , respectively numbered. For No. 4, No. 5 and No. 6. No. 4 installs 2 ecological floating bed monomers 110, equal-area microbial layer 200 and submerged plant layer 300, No. 5 installs four ecological floating bed monomers 110, equal-area microbial layer 200 and submerged plant layer 300, No. 6 Install 8 ecological floating bed monomers 110, equal-area microbial layers 200 and submerged plant layers 300. The plant combinations are all made of water lily + sunflower, and the test time is 60 days. Water samples are taken every day to measure various water quality indicators, and the water quality indicators of the original eutrophic water body are used as a comparison. The impact of water quality indicators, the results are shown in Table 2:

Table 2 Removal rate of different pollutants

Comparing No. 1 and No. 4, No. 2 and No. 5, No. 3 and No. 6 tests, it can be seen that when other conditions are the same, the treatment effect of embodiment 1 on eutrophic water body is obviously better than this comparative example, and the water quality after treatment There is a significant improvement,

Comparative example 2

The basic content of this comparative example is the same as that of Example 1. The difference is that this comparative example is a comparative experiment of Example 1. According to the size of the pond area, it is divided into 3 groups, namely 2m ² , 4m ² , and 8m ² , respectively numbered. For No. 7, No. 8 and No. 9. On the 7th, 6 drug delivery boxes 400 are installed, on the 8th, 8 drug delivery boxes 400 are installed, and on the 9th, 12 drug delivery boxes 400 are installed. The passivating agent is all housed in the drug delivery box 400 . The test time was 60 days, water samples were taken every day to measure various water quality indicators, and the water quality indicators of the original eutrophic water body were used as a contrast, and the influence of the inventive device on various water quality indicators in the eutrophic water body was calculated. The results are shown in Table 3 Show:

Table 3 Removal rate of different pollutants

Comparing No. 1 and No. 7, No. 2 and No. 8, No. 3 and No. 9 tests, it can be seen that when other conditions are the same, the treatment effect of embodiment 1 on eutrophic water body is obviously better than this comparative example, and the water body quality after treatment There is a significant improvement.

Comparative example 3

The basic content of this comparative example is the same as that of Example 1. The difference is that this comparative example is a comparative experiment of Example 1. According to the size of the pond area, it is divided into 3 groups, namely 2m ² , 4m ² , and 8m ² , respectively numbered. For No. 10, No. 11, No. 12. Install 2 ecological floating bed monomers 110, equal-area microbial layer 200 and submerged plant layer 300 on the 10th, and install 6 drug delivery boxes 400 at a linear distance ≤ 20 cm from the ecological floating bed monomer 110, and install 4 on the 11th. An ecological floating bed monomer 110, an equal-area microbial layer 200 and a submerged plant layer 300, and 8 drug delivery boxes 400 are installed at a distance of less than or equal to 40cm, and eight ecological floating bed monomers 110 and equal-area microorganisms are installed on the 12th. Layer 200 and submerged plant layer 300, and 12 drug delivery boxes 400 are installed at a distance of less than or equal to 80cm. The drug delivery box 400 is equipped with a passivating agent, and the plant combination is all made of water lily + sunflower. The test time is 60 days. Water samples are taken every day to measure various water quality indicators. Calculate the impact of the inventive device on various water quality indicators in the eutrophic water body, and the results are as shown in table 4:

Table 4 Removal rate of different pollutants

Comparing No. 1 and No. 10, No. 2 and No. 11, No. 3 and No. 12 tests, it can be seen that when other conditions are the same, the treatment effect of embodiment 1 on eutrophic water body is obviously better than this comparison example, and the water quality after treatment There is a significant improvement.

More specifically, although exemplary embodiments of the present invention have been described herein, the present invention is not limited to these embodiments but includes modifications, omissions, Any and all embodiments such as combinations, adaptations, and/or substitutions between the various embodiments. The definitions in the claims are to be interpreted broadly according to the language used in the claims and not limited to the examples described in the foregoing detailed description or during the prosecution of this application, which examples should be considered non-exclusive. Any steps recited in any method or process claims may be performed in any order and are not limited to the order presented in the claims. Accordingly, the scope of the present invention should be determined only by the appended claims and their legal equivalents, rather than by the description and examples given above.

Claims (6)

1. Multifunctional combined ecological floating bed is from top to bottom set gradually floating plant layer (100), microorganism layer (200) and submerged plant layer (300), the week side on floating plant layer (100) is provided with medicine and puts in box (400), its characterized in that: the microbial layer (200) is provided with a loading piece, the loading piece is provided with loading fibers (250), and the length of the loading fibers (250) is L ₁ The total length of the load piece is L, L: l (L) ₁ =5-20; the load piece comprises a load section (220), an oxygen slow-release section (230) and a diffusion section (240);

the oxygen slow release section (230) is arranged between the load section (220) and the diffusion section (240), and the oxygen slow release section (230) is provided with an oxygen slow release material (231);

the loading section (220) and the diffusion section (240) are provided with loading fibers (250); the plant planting density of the floating plant layer (100) is less than the plant planting density of the submerged plant layer (300);

a passivating agent is arranged in the medicine delivery box (400);

the bottom of the medicine delivery box (400) is provided with a delivery hole (420), and/or

An automatic controller (410) is arranged in the medicine delivery box (400) and is used for controlling medicine delivery.

2. The multifunctional combined ecological floating bed according to claim 1, wherein: the floating plant layer (100) is planted with floating plants, which are one or more of water lily, side-by-side vegetables and gorgon euryale seeds, and/or

The submerged plant layer (300) is planted with submerged plants, and the submerged plants are one or more of Mallotus japonicus, sargassum graminifolium and Sargassum fusiforme.

3. The multifunctional combined ecological floating bed according to claim 1, wherein: still include spud (500), the periphery side on floating plant layer (100), microorganism layer (200) and submerged plant layer (300) all is connected with spud (500) can be dismantled through installation department (510).

4. The multifunctional combined ecological floating bed according to claim 1, wherein: the oxygen slow release material (231) is loaded with one or two of calcium peroxide and magnesium peroxide.

5. The multifunctional combined ecological floating bed according to claim 1, wherein: the dosing frequency of the passivating agent is 1-3 times per week, and the dosing amount of the passivating agent is 0.2-0.6 g/time.

6. A multifunctional combined ecological floating bed according to claim 2, characterized in that: the floating plant layer is provided with a planting groove (111) and a planting substrate, and the bottom of the planting groove (111) is provided with a water permeable hole (112); the ratio of the particle size of the planting substrate to the pore diameter of the water permeable pores (112) is 1.2-1.3.

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