An ecological floating bed for water environment

Abstract

The invention relates to the technical field of ecological floating beds, in particular to a novel ecological floating bed for water environment, wherein a plurality of supporting blocks are spliced ​​and extended in a horizontal direction, a plurality of planting holes are evenly arranged on the supporting blocks, a plant carrier structure comprises a cylindrical planting trough which is sleeved in the planting hole and plants planted in the cylindrical planting trough, a connecting fixture comprises a disc which is used to simultaneously press and hold the top edges of a plurality of cylindrical planting troughs, and a clamping column which is integrally formed at the center of the bottom surface of the disc and vertically clamped with a plurality of supporting blocks at the intersection, the supporting blocks and the connecting fixture are integrally cast and formed by a lightweight porous concrete base material; the raw materials for preparing the lightweight porous concrete base material comprise 20-60% of perlite, 20-40% of sulphoaluminate cement, 5-20% of silicon carbide and 5-20% of a water reducer by weight; calcium salt is added to the raw materials for preparing the connecting fixture before casting and forming; the problem that the ecological floating bed is inconvenient to install and the water purification efficiency is low is well solved.

Description

Technical Field

[0001] The invention relates to the technical field of ecological floating beds, in particular to an ecological floating bed used in a water environment. Background Art

[0002] Storage ponds are basic irrigation and drainage facilities for farmland, but ordinary storage ponds that have not been strengthened have limited pollutant reduction capabilities due to the number and types of functional microorganisms and water purification plants. Planting emergent plants, submerged plants, and floating plants in the pond can enhance water purification efficiency to a certain extent, but plant management and harvesting are relatively difficult.

[0003] Ecological floating bed technology is an in-situ water purification technology commonly used in water environment restoration in recent years. It has the characteristics of simple construction, low cost, easy maintenance, and easy plant management.

[0004] However, the bed of traditional ecological floating beds generally has no water purification function, and mainly relies on plant absorption and the action of limited microorganisms attached to plant roots to remove pollutants, and the water purification efficiency is relatively low. In addition, traditional floating beds are not easy to install and are not conducive to widespread application. Summary of the invention

[0005] The purpose of the present invention is to provide an ecological floating bed for a water environment, so as to solve the problem in the prior art that the ecological floating bed is inconvenient to install and has low water purification efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ecological floating bed for a water environment, wherein a plurality of supporting blocks are spliced ​​and extended in a horizontal direction, a plurality of planting holes penetrating the top and bottom surfaces of the supporting blocks are evenly arranged on the supporting blocks, the plant carrier structure comprises a cylindrical planting trough sleeved in the planting hole and plants planted in the cylindrical planting trough, the connecting fixing member comprises a disc for simultaneously pressing the top edges of a plurality of the cylindrical planting troughs and a disc having a top integrally formed at the center of the bottom surface of the disc and connected to the plurality of the cylindrical planting troughs. A clamping column is vertically clamped at the intersection of the supporting blocks, and the length of the clamping column is greater than the thickness of the supporting blocks; the supporting blocks and the connecting fixtures are integrally cast from a lightweight porous concrete base material; the raw materials for preparing the lightweight porous concrete base material include perlite with a weight component of 20-60%, sulphoaluminate cement with a weight component of 20-40%, silicon carbide with a weight component of 5-20%, and a water reducer with a weight component of 5-20%; calcium salt is added to the raw materials for preparing the connecting fixtures before casting.

[0007] Preferably, the supporting base block includes a main plate in the shape of a regular hexagon and a connecting plate integrally formed in the middle of one side wall of the main plate and extending in the horizontal direction, and slots matching with the connecting plate are respectively provided in the middle of the remaining side walls of the main plate, and the planting holes are evenly arranged on the main plate.

[0008] Preferably, one of the vegetation holes is arranged at the center of the main plate and the remaining six vegetation holes are evenly arranged circumferentially around the periphery of the center of the main plate, the vegetation holes at the periphery correspond to the middle of the slot, and a through hole is provided in the middle of the connecting plate, which is socketed and matched with the cylindrical planting trough.

[0009] Preferably, an annular groove is provided on the outer edge of the top of the planting hole, and the cylindrical planting trough includes a cylindrical frame that is sleeved and matched with the planting hole and the perforation, and a ring body that is integrally formed on the outer edge of the top of the cylindrical frame and sleeved and matched with the annular groove.

[0010] Preferably, the disc is provided with a through hole corresponding to the planting hole, the aperture of the through hole is equal to the inner diameter of the ring body, and the ring body corresponding to the center position of the main plate is pressed below the outer edge of the disc.

[0011] Preferably, vertical slots are respectively provided at the three corners of the main plate, and the clamping column is simultaneously clamped vertically with the three adjacent vertical slots.

[0012] Preferably, the inner cavity of the cylindrical frame is located at the periphery of the plant root and is filled with fillers, and the top of the inner cavity of the cylindrical frame is located at the periphery of the plant stem and is covered with a sponge.

[0013] Preferably, the inner cavity wall of the cylindrical frame is provided with a plurality of ribs extending in the vertical direction.

[0014] Preferably, the water reducer is a naphthalene-based water reducer.

[0015] Preferably, the particle size of the perlite is 5 to 8 mm.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention relates to an ecological floating bed for water environment that can not only support plants so that the plant roots can achieve water purification effects; the supporting base blocks and connecting fixtures involved are integrally cast from a lightweight porous concrete substrate, wherein the lightweight porous concrete substrate itself has a certain chemical phosphorus removal function, and the porous structure becomes a carrier for the attachment and growth of microorganisms, providing a channel for the transfer of substances between microorganisms, plants, and water; compared with a PE bed, the porous concrete material also has better air permeability, reducing the influence of the bed cover on the reoxygenation effect of the water body.

[0018] 2. The ecological floating bed for water environment involved in the present invention is assembled from multiple supporting blocks and connecting fixtures. It is not only simple to assemble, but also firmly connected to each other, which is convenient for flexible assembly of floating beds of different sizes. In addition, the clamping column of the connecting fixture extends vertically, which not only can firmly connect the adjacent supporting blocks, but also can make the entire floating bed float steadily on the water surface. In particular, calcium salt is added to the raw materials for its preparation, which further improves the efficiency of dephosphorization of water bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the supporting base block of the present invention;

[0021] Figure 3 It is a schematic diagram of the planar cross-section structure of the support base block of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting and fixing member of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the plant carrier structure of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the cylindrical planting trough of the present invention;

[0025] Figure 7 This is a schematic diagram of the dynamic changes of TP concentration during the experiment;

[0026] Figure 8 It is a schematic diagram of the dynamic changes of TP purification and removal rate of the composite floating bed within a cycle.

[0027] In the figure: 1-support base block; 1.1-main plate; 1.1.1-vegetation hole; 1.1.2-annular groove; 1.1.3-slot; 1.1.4-vertical slot; 1.2-connecting plate; 1.2.1-perforation;

[0028] 2-connecting fixing piece; 2.1-clamping cylinder; 2.2-disc; 2.2.1-through hole;

[0029] 3-plant carrier structure; 3.1-cylindrical planting trough; 3.1.1-cylindrical frame; 3.1.2-ring body; 3.1.3-ribs; 3.2-plant; 3.3-filler; 3.4-sponge. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-6 The present invention provides a technical solution, an ecological floating bed for a water environment, wherein a plurality of supporting blocks 1 are spliced ​​and extended in the horizontal direction, the supporting block 1 comprises a main plate 1.1 in the shape of a regular hexagon and a connecting plate 1.2 integrally formed in the middle of one side wall of the main plate 1.1 and extending in the horizontal direction, the middle of the other side walls of the main plate 1.1 are respectively provided with slots 1.1.3 plugged and matched with the connecting plate 1.2, and the vegetation holes 1.1.1 are provided on the main plate 1.1. One of the vegetation holes 1.1.1 is provided at the center of the main plate 1.1 and the remaining six vegetation holes 1.1.1 are uniformly provided at the periphery of the center of the main plate 1.1 along the circumferential direction, the vegetation holes 1.1.1 at the periphery correspond to the middle of the slots 1.1.3, the middle of the connecting plate 1.2 is provided with a through hole 1.2.1; the outer edge of the top of the vegetation hole 1.1.1 is provided with an annular groove 1.1.2. The three corners of the main plate 1.1 are respectively provided with vertical card slots 1.1.4.

[0032] The plant carrier structure 3 includes a cylindrical planting trough 3.1 which is sleeved in the planting hole 1.1.1 and a plant 3.2 which is planted in the cylindrical planting trough 3.1. The cylindrical planting trough 3.1 includes a cylindrical frame 3.1.1 which is sleeved and matched with the planting hole 1.1.1 and the through hole 1.2.1, and a ring body 3.1.2 which is integrally formed at the outer edge of the top of the cylindrical frame 3.1.1 and sleeved and matched with the annular groove 1.1.2.

[0033] The connecting fixture 2 comprises a disc 2.2 for simultaneously pressing the edges of the top surfaces of multiple ring bodies 3.1.2, and a clamping column 2.1 whose top is integrally formed at the center of the bottom surface of the disc 2.2 and is simultaneously clamped vertically with the vertical clamping grooves 1.1.4 at the intersection of multiple supporting base blocks 1, and the length of the clamping column 2.1 is greater than the thickness of the supporting base block 1. Among them, the disc 2.2 is provided with a through hole 2.2.1 corresponding to the planting hole 1.1.1, and the aperture of the through hole 2.2.1 is equal to the inner diameter of the ring body 3.1.2, and the ring body 3.1.2 corresponding to the center position of the main plate 1.1 is pressed below the outer edge of the disc 2.2.

[0034] In summary, when assembling the ecological floating bed, multiple main plates 1.1 are fitted and spliced ​​together so that the connecting plate 1.2 is inserted into one of the slots 1.1.3 on the side wall of the adjacent main plate 1.1. Then install the plant carrier structure. The cylindrical frame 3.1.1 is inserted into each vegetation hole 1.1.1, and the ring body 3.1.2 is just stuck in the annular groove 1.1.2; the middle part of the cylindrical frame 3.1.1 passes through the perforation 1.2.1 on the corresponding connecting plate 1.2, which plays the role of connecting the adjacent supporting base blocks 1. Among them, when the plant 3.2 is planted in the cylindrical frame 3.1.1, the inner cavity of the cylindrical frame 3.1.1 is located outside the root of the plant 3.2 and is filled with filler 3.3, and the top of the inner cavity of the cylindrical frame 3.1.1 is located outside the stem of the plant 3.2 and is equipped with a sponge 3.4; the filler 3.3 can be selected from ceramsite, etc., which plays the role of fixing the plant root system, and the sponge 3.4 is used to fix the stem of the plant 3.2.

[0035] Then install the connecting fixture 2, insert the clamping column 2.1 into the cavity formed by the three adjacent vertical slots 1.1.4, until the clamping column 2.1 extends downward, and the bottom surface of the disc 2.2 fits the top surface of the main plate 1.1. During operation, ensure that the through hole 2.2.1 corresponds to the corresponding planting hole 1.1.1, so that the bottom surface of the disc 2.2 outside the bottom end of the through hole 2.2.1 is just pressed on the top surface of the ring body 3.1.2; and the outer edge of the bottom surface of the disc 2.2 is pressed on the top surface of the ring body 3.1.2 located in the center of the main plate 1.1. It not only realizes a further firm connection between adjacent supporting blocks 1, but also presses and fixes the cylindrical planting trough 3.1. The clamping column 2.1 extending downward lowers the center of gravity of the entire ecological floating bed, thereby ensuring that the ecological floating bed can float steadily on the water surface, playing a role in resisting wind and waves.

[0036] In order to improve the overall strength of the cylindrical planting trough 3.1, the inner wall of the cylindrical frame 3.1.1 is provided with a plurality of ribs 3.1.3 extending vertically.

[0037] The supporting base block 1 and the connecting fixture 2 are integrally cast from a lightweight porous concrete base material; the raw materials for preparing the lightweight porous concrete base material include 20-60% by weight of perlite, 20-40% by weight of sulphoaluminate cement, 5-20% by weight of silicon carbide, and 5-20% by weight of a water reducer; before casting the connecting fixture 2, calcium salt is added to the raw materials for preparation. Among them, the water reducer is a naphthalene-based water reducer. The particle size of the perlite is 5-8 mm.

[0038] In summary, the supporting base block 1 and the connecting fixture 2 processed from the above components have a lightweight porous structure, and their appearance is similar to that of shaqima. Not only can it meet the need to float on the water surface, but the lightweight porous concrete substrate itself has a certain chemical phosphorus removal function. The porous structure becomes a carrier for the attachment and growth of microorganisms, providing a channel for the transfer of substances between microorganisms, plants, and water; compared with the PE bed, the porous concrete material also has better air permeability, reducing the impact of the bed cover on the reoxygenation effect of the water body. Among them, sulfoaluminate cement has a low pH value and will not have an adverse effect on the water environment. Perlite as an aggregate has the effect of inducing crystallization and precipitation, that is, the first precipitated phosphate is plated on the surface, which can induce the subsequent continued precipitation until the relevant ions are lower than the precipitation value, and the entire precipitation process can exceed three months. The floating bed carrier can also be recycled to achieve the effect of recycling phosphorus resources, thereby not only achieving the purpose of avoiding eutrophication of water bodies, but also achieving the effect of recycling resources. (In fact, phosphorus is a limited resource and can be widely used in phosphate fertilizer production)

[0039] See also Figure 7 The experimental process for selecting raw materials for preparing the lightweight porous concrete substrate (bed material) in the present invention is as follows:

[0040] 1. Comparison of lightweight aggregate and cement.

[0041] Table 1 Aggregates to be selected and their main components

[0042]

[0043] Phosphate can combine with calcium ions, aluminum ions, etc. to form precipitation or crystal products that precipitate out of water, achieving the purpose of removing phosphorus from water. Suitable aggregates can be used as crystal seeds to promote heterogeneous crystallization, reduce the interfacial free energy that needs to be overcome for phosphate crystallization, play a role in inducing crystallization, and improve phosphorus removal efficiency.

[0044] In addition, as a floating bed material, the bed density needs to be relatively light so that the bed material can automatically float on the water surface. The aggregate of the porous bed material plays a key role in the density of the bed material. This time, several inorganic aggregates with lower density were selected (see Table 1), and based on the phosphorus removal effect, an optimal aggregate was determined for the preparation of the floating bed material. It can be seen from Table 1 that the main components of each aggregate are similar, but in fact their specific components and molecular structures are different. Which aggregate is more beneficial for phosphate crystallization / precipitation is theoretically related to factors such as the precipitation form, precipitation thermodynamics, and kinetics of phosphate crystals, which cannot be determined by technical personnel in this field based on experience and common sense.

[0045] The precipitation characteristics of phosphates should also be closely related to the binder used in the preparation of porous bed materials. Cement is used as a binder in the preparation of porous media materials. 2+, and thus the materials involved can have better phosphorus removal function. At present, the most widely used cement is silicate cement, the main components of which are tricalcium silicate, dicalcium silicate, tricalcium aluminate, and tetracalcium aluminoferrate. The present invention also pays attention to another commonly used cement, sulphoaluminate cement. This type of cement has the property of rapid hardening and is generally used in situations where quick drying is required. Its main components are calcium sulphoaluminate water and dicalcium silicate. Compared with ordinary silicate cement, its alkalinity is lower. However, what kind of aggregate is combined with what kind of cement to obtain the best phosphorus removal effect is also something that technicians in this field cannot determine based on experience and common sense.

[0046] To this end, the present invention determines the optimal aggregate and cement material through experiments. The aggregate particle size is 5-8mm (preliminary tests show that this particle size range is easier to shape). In addition to the aggregate particle size, the volume percentage of the aggregate should be the key factor affecting the phosphorus removal effect and the porosity of the material. Different aggregates have different densities. When selecting the best aggregate, it is not reasonable to keep the same mass fraction of each aggregate in the material composition. Therefore, when selecting aggregates, the volume percentage of each aggregate is kept the same (70%).

[0047] With the help of self-made molds, silicate cement and sulphoaluminate cement were used as binders to prepare materials. During the trial production, appropriate amounts of silicon carbide powder (to improve the bonding strength) and naphthalene-based water reducer were added. According to relevant data, the amount of cement used for each cubic meter of bed material in the trial production was calculated using the following formula (when trial-producing materials, the cement amount was calculated by converting it into the size of the actual trial-produced material):

[0048]

[0049] W W =W C R W / C (kg / m 3 )

[0050] Where: W C —Amount of cement used per cubic meter, kg / m 3 ;

[0051] W W —Water consumption per cubic meter, kg / m 3 ;

[0052] R W / C — water-cement (glue) ratio;

[0053] ρc—cement density, kg / m 3 ;

[0054] Twelve kinds of floating bed materials were made using the above six kinds of aggregates and two kinds of cement materials, and the porosity of the materials was measured. 3), as for 500mL of water, a static phosphorus removal test was carried out, with 3 parallel tests in each group. Before the test, the trial floating bed material was rinsed with water to reduce the pH to 7-8 (the pH range when applied to actual water bodies). The test raw water was simulated phosphorus-containing water, and the total phosphorus concentration of the raw water was set to 5mg / L (phosphate comes from potassium dihydrogen phosphate). The static test cycle was h, and samples were taken every 1h during the test to detect the phosphorus concentration in the water. The above test was carried out for 2 consecutive cycles, that is, after the end of the first cycle, the treated test water was discharged, and the new raw water was added to repeat the test.

[0055] The dynamic changes of total phosphorus (TP) concentration during the test are as follows: Figure 7 As shown in the figure, as the residence time of the porous medium increases, TP shows a significant downward trend, indicating that the porous bed materials made of various aggregates have obvious phosphorus removal effects, but the phosphorus removal rates of different materials are significantly different (p<0.05). The experimental results show that when silicate cement is used, the TP removal effect is from high to low in the order of perlite>clay ceramsite>pumice>biological ceramsite>volcanic rock>zeolite; when sulphoaluminate cement is used, the TP removal rate is from high to low in the order of perlite>clay ceramsite>zeolite>biological ceramsite>pumice>volcanic rock. The porosity of each material and the TP removal rate after each cycle of reaction are shown in Table 2. The removal rate is the average of the removal rates at the end of two cycles.

[0056] It can be seen from the test results that, in the case of two types of cement as binder, the bed material with perlite as aggregate showed the best TP removal effect. The perlite bed material with sulphoaluminate cement as binder had the highest TP removal rate. The above results confirm that there are significant differences in the TP removal efficiency of porous bed materials made of different aggregates and binders. The optimal material combination is difficult to obtain through experience and common sense. Based on the test results and comprehensive material costs, the optimal aggregate and binder are determined to be perlite and sulphoaluminate cement.

[0057] Table 2 TP removal rate in 6 hours

[0058]

[0059] 2. Determination of perlite aggregate / cement mass percentage.

[0060] Light transmission and air permeability are another main characteristic of this floating bed material. The size of the porosity plays a decisive role in this characteristic. In theory, reducing the aggregate / cement mass ratio, that is, increasing the amount of cement, thereby increasing the thickness of the binder film around the aggregate and increasing the bonding surface, can effectively improve the strength of the bed. However, changing the aggregate / cement ratio may change the porosity of the bed material. The optimal aggregate / cement ratio should be to make the material have a higher porosity as much as possible on the basis of ensuring a good phosphorus removal effect. This ratio is difficult to determine directly based on experience and common sense. For this reason, after determining perlite (5-8mm) and sulphoaluminate as aggregate and binder, the porosity and phosphorus removal effect of porous bed materials made under different (aggregate: cement) conditions were further compared through experiments (three groups of experiments were conducted in parallel, keeping the mass ratio of silicon carbide powder and reducer unchanged). The test method is the same as above, and the test results are shown in Table 3.

[0061] Table 3 Porosity and phosphorus removal efficiency of materials under different material mass ratios (reaction time 6h)

[0062] Material mass ratio (perlite: sulphoaluminate cement: silicon carbide: naphthalene-based water reducer) Porosity TP removal rate 70%：10%：10%：10% 51% 69% 60%：20%：10%：10% 51% 71% 50%：30%：10%：10% 49% 74% 40%：40%：10%：10% 48% 83% 30%：50%：10%：10% 45% 85% 20%：60%：10%：10% 31% 86% 10%：70%：10%：10% 22% 84%

[0063] It can be seen from the test results that different ratios of perlite and cement have a great influence on the porosity (P<0.05). When the mass ratio of perlite is between 10% and 40%, increasing the ratio of aggregate (perlite) (correspondingly reducing the amount of cement) can significantly increase the porosity of the bed material.

[0064] Changing the aggregate (perlite) ratio also changes the amount of sulphoaluminate cement (because the mass ratio of other components remains unchanged, the sum of the mass ratio of cement and aggregate remains unchanged), which also affects the TP removal effect. On the one hand, the aggregate ratio affects the porosity of the bed material, which in turn affects the effective contact area between water and the material, thereby affecting the phosphorus removal effect; on the other hand, changing the aggregate ratio will change the amount of cement, so Ca 2+ The release of phosphate will change, which will also have an impact on phosphate crystallization / precipitation.

[0065] The test results show that reducing the perlite ratio (correspondingly increasing the cement dosage) will lead to an increase in TP removal efficiency. The reason is that the cement ratio may increase the Ca 2+The release of cations such as carbon dioxide and phosphorus, thereby enhancing the effect of crystallization and phosphorus removal. However, when the aggregate ratio is reduced to a certain value (10%), the porosity of the bed will be significantly reduced. According to experimental experience, keeping the porosity above 30% can ensure good air permeability. Therefore, it is determined through research that the mass percentage of perlite in the developed bed material should be above 20%. The test results show that when the mass percentage of perlite is greater than 60%, the porosity of the bed material is not significantly improved, and the phosphorus removal efficiency will be further reduced. Therefore, it is believed that the mass percentage of perlite should not be greater than 60%. In summary, the appropriate proportion of perlite is 20% to 60%, the appropriate mass percentage of the corresponding sulphoaluminate cement is 60% to 20%, and silicon carbide powder and reducer each account for 10%.

[0066] It can be seen from the test results that when the mass percentage of perlite is 40%, the porosity of the bed material has reached 48%, and the TP removal rate is also high (83%). On this basis, if the mass percentage of perlite is further reduced, the porosity of the bed material will decrease significantly, while the TP removal rate will increase slightly; if the mass percentage of perlite is further increased, the TP removal rate of the bed material will decrease significantly, while its porosity will increase slightly. Based on the above results, the optimal mass percentage of perlite is determined to be 40% (the corresponding volume percentage is 70%), that is, the mass percentages of perlite, sulphoaluminate cement, silicon carbide powder, and naphthalene series water reducer are: 40%, 40%, 10%, and 10%, respectively.

[0067] 3. Display of floating bed and verification of treatment effect

[0068] By comparing the dynamic changes of the concentrations of various pollutants in the developed composite ecological floating bed system (A) and the ordinary ecological floating bed system (B), the water purification efficiency and mechanism of the composite ecological floating bed are analyzed. During the test, both floating beds were planted with water celery, and the coverage rate of the floating bed on the water surface was set to 75% according to the literature. Ordinary ecological floating beds only plant aquatic plants, and the bed body is made of polyethylene foam board (commonly used ordinary floating bed material). Potassium dihydrogen phosphate was used as the phosphorus source and source to prepare the test raw water. Referring to the concentration range of the main pollutants in the polluted water body, three concentration levels of high, medium and low were set. The concentration of influent pollutants at each concentration level is shown in the following 4 tables.

[0069] Table 4 Initial concentration of test water samples

[0070]

[0071] like Figure 8 As shown in the figure, the average removal rate of TP in the ordinary floating bed control group was only 3.1% to 15.6%, while the average TP removal rate was 19% to 81.7%. During the entire test period, the TP removal effect of the composite floating bed group was significantly better than that of the ordinary floating bed group.

[0072] The TP removal rate obtained in the present invention is lower than the TP removal rate obtained in the previous research and development stage. The reason is that the experiments in the research and development stage were only used to test the phosphorus removal performance of materials with different material compositions / ratios. The experiments were carried out using beaker tests, and the volumes of materials and water were relatively large. This part of the experiment simulates a lake environment. The water depth of the test device is relatively large, and the volume of the floating bed and water is relatively small. By comparing with ordinary floating beds, this study only shows the superiority of the developed floating bed in phosphorus removal. In fact, compared with ordinary floating beds, this floating bed has the characteristics of air permeability and light transmission, which is beneficial to the oxygenation of the water body and maintaining good lighting conditions, and will have a long-term beneficial effect on the water ecology.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ecological floating bed for aquatic environment, characterized by comprising: A support base block (1), wherein a plurality of the support base blocks (1) are spliced ​​and extended in a horizontal direction, and the support base block (1) is evenly provided with a plurality of planting holes (1.1.1) penetrating the top and bottom surfaces thereof; wherein the support base block (1) comprises a main plate (1.1) in the form of a regular hexagon and a connecting plate (1.2) integrally formed in the middle of one side wall of the main plate (1.1) and extending in a horizontal direction, and slots are respectively provided in the middle of the remaining side walls of the main plate (1.1) for plugging and matching with the connecting plate (1.2). (1.1.3), one of the vegetation holes (1.1.1) is arranged at the center of the main plate (1.1) and the remaining six vegetation holes (1.1.1) are evenly arranged around the center of the main plate (1.1) along the circumferential direction, the vegetation holes (1.1.1) at the periphery correspond to the middle of the slot (1.1.3), a through hole (1.2.1) is provided in the middle of the connecting plate (1.2), and an annular groove (1.1.2) is provided on the outer edge of the top of the vegetation hole (1.1.1); A plant carrier structure (3), the plant carrier structure (3) comprising a plant carrier sleeved in the plant hole ( 1.1.1) and a plant (3.2) planted in the cylindrical planting trough (3.1); wherein: The cylindrical planting trough (3.1) comprises a cylindrical frame (3.1.1) that is sleeved and matched with the planting hole (1.1.1) and the through hole (1.2.1), and a ring body (3.1.2) that is integrally formed on the outer edge of the top end of the cylindrical frame (3.1.1) and is sleeved and matched with the annular groove (1.1.2); A connecting fixture (2), the connecting fixture (2) comprising a disc (2.2) for simultaneously pressing the top edges of a plurality of the cylindrical planting grooves (3.1) and a clamping column (2.1) whose top is integrally formed at the center of the bottom surface of the disc (2.2) and is vertically clamped with the intersection of the plurality of the supporting blocks (1), the length of the clamping column (2.1) being greater than the thickness of the supporting block (1); wherein the disc (2.2) is provided with a through hole (2.2.1) corresponding to the planting hole (1.1.1), the aperture of the through hole (2.2.1) being equal to the inner diameter of the ring body (3.1.2), and the ring body (3.1.2) corresponding to the center position of the main plate (1.1) is pressed below the outer edge of the disc (2.2); The supporting base block (1) and the connecting fixture (2) are integrally cast from a lightweight porous concrete base material; wherein the raw materials for preparing the lightweight porous concrete base material include perlite with a weight component of 20-60%, sulphoaluminate cement with a weight component of 20-40%, silicon carbide with a weight component of 5-20%, and a water reducing agent with a weight component of 5-20%; and calcium salt is added to the raw materials for preparing the connecting fixture (2) before casting.

2. The ecological floating bed for aquatic environment according to claim 1, characterized in that: Vertical clamping grooves (1.1.4) are respectively provided at the three corner positions of the main plate (1.1), and the clamping column (2.1) is simultaneously clamped vertically with the three adjacent vertical clamping grooves (1.1.4).

3. The ecological floating bed for aquatic environment according to claim 1, characterized in that: The inner cavity of the cylindrical frame (3.1.1) is located at the periphery of the root of the plant (3.2) and is filled with filler (3.3), and the top of the inner cavity of the cylindrical frame (3.1.1) is located at the periphery of the stem of the plant and is covered with a sponge (3.4).

4. The ecological floating bed for aquatic environment according to claim 1, characterized in that: The inner cavity wall of the cylindrical frame (3.1.1) is provided with a plurality of ribs (3.1.3) extending vertically.

5. The ecological floating bed for aquatic environment according to claim 1, characterized in that: The water reducing agent is a naphthalene-based water reducing agent.

6. The ecological floating bed for aquatic environment according to claim 1, characterized in that: The particle size of the perlite is 5 to 8 mm.

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