River and lake water body purification composite natural biological membrane ecological floating bed and construction method

Abstract

The present application relates to a kind of river and lake water body purification composite natural biological membrane ecological floating bed and construction method, comprising the following steps: the production of floating bed board, erecting liftable connecting support, install floating bed platform, pole type combination fixed structure installation, aeration equipment and the installation of protective net, aquatic plant planting and microorganism placement.The beneficial effects of the present application are: by the proposal of a kind of river and lake water body purification composite natural biological membrane ecological floating bed and construction method, the problem of low efficiency, high maintenance cost of traditional water purification method is solved, efficient purification and ecological balance of water body are realized, compared with the traditional ecological floating bed structure, it is also more stable and reliable, and has a longer service life, can flexibly adapt to different water conditions.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of water environment treatment, and particularly relates to a river and lake water purification composite natural biofilm ecological floating bed and a construction method. BACKGROUND

[0002] An ecological floating bed is an ecological restoration technology that uses buoyancy principles to allow plants to grow on the water surface. Through specific floating bed structures, plant root systems are supported to directly contact the water body, thereby achieving the purpose of purifying the water body and improving water quality. Ecological floating beds not only absorb and decompose nutrients and pollutants in water, but also provide habitats for aquatic organisms and increase biodiversity. It is an environmentally friendly and efficient water ecological restoration and management technology. Its main features include water purification, effective removal of nitrogen, phosphorus and other nutrients, and some organic pollutants and heavy metals in water through the combined action of plant roots and microorganisms attached to the roots, and improvement of water quality. The floating bed provides living space for aquatic plants and animals, helping to increase water biodiversity. Various ornamental plants can be planted on the ecological floating bed to beautify the water environment and improve urban landscape quality. Compared with traditional water treatment technologies, the ecological floating bed technology has lower cost and is easy to maintain. The design, construction and maintenance of the ecological floating bed are relatively simple and can be flexibly configured according to the water body conditions.

[0003] The application scenarios of the ecological floating bed include urban park lakes and artificial lakes, aiming to improve the landscape and improve water quality. The ecological floating bed is applied in agricultural irrigation reservoirs to reduce nutrients in the water body and prevent excessive algae reproduction. The ecological floating bed is applied in the tailwater pool of a sewage treatment plant to further improve water quality and meet discharge standards. The ecological floating bed is applied in ecological wetlands to enhance the purification function of the ecological wetland system.

[0004] While traditional floating ecological beds have played a role in water purification and ecological restoration, they have also encountered some problems and shortcomings in practical applications. Firstly, their ecological adaptability is limited. Traditional floating ecological beds often use a single type of plant, limiting their adaptability to different aquatic environments. Different aquatic environments (such as salinity, pH, and pollutant types) have different requirements for plants, and a single plant species cannot adapt to all aquatic environments. Secondly, there are issues with structural stability. Some floating ecological beds are designed and materially selected without considering long-term durability, making them prone to structural damage or plant drop due to material aging, water flow impact, and other factors. Maintenance costs are high. Traditional floating ecological beds require regular maintenance and plant replacement, especially in heavily polluted water or environments with large fluctuations in nutrient concentration, where the plant growth cycle is shortened, increasing maintenance costs. Assessing ecological benefits is also difficult. The ecological benefits of traditional floating ecological beds are often difficult to quantify because their contribution to water purification is closely related to plant species, water conditions, and design schemes, lacking a unified standard. Furthermore, floating ecological beds also suffer from low space utilization. Because they need sufficient space for plant growth and root expansion, some floating ecological bed designs cannot fully utilize the water surface, resulting in relatively low purification efficiency. Finally, biodiversity is limited. Traditional floating ecological beds often only consider the purification effect of plants, neglecting the importance of providing habitats for aquatic animals, which limits their potential for increasing biodiversity.

[0005] To address the aforementioned shortcomings, there is an urgent need for an ecological floating bed for purifying river and lake water and a construction method for it. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a composite natural biofilm ecological floating bed for river and lake water purification and its construction method.

[0007] This composite natural biofilm ecological floating bed for purifying river and lake water includes a liftable connecting bracket, anchor blocks, fixing rods, floating bed platform, small lighting, microporous aerator, water oxygen monitor, protective net and fasteners;

[0008] The floating platform is connected to the shore by fixed rods. The floating platform consists of several floating units. The upper layer of the floating unit is a composite fiber floating island plate, and the lower layer is an HDPE floating bed plate.

[0009] The liftable connecting support comprises a telescopic pipe, a vertical steel pipe, side baffles, a pull rope, a rotating shaft and a spring, the bottom of the floating bed unit is provided with a lock, the bottom end of the vertical steel pipe is inserted into the riverbed, a plurality of side baffles are arranged on the inner wall of the vertical steel pipe at different heights, the telescopic pipe is fixed at the bottom of the floating bed platform, the telescopic pipe is inserted into the vertical steel pipe, the pull rope is threaded in the telescopic pipe, one end of the pull rope is fixed on the lock, the other end of the pull rope is connected with a main baffle through the rotating shaft at the bottom of the telescopic pipe, the spring is arranged between the main baffle and the bottom end of the telescopic pipe, and the spring is used for maintaining the horizontal position of the main baffle, and the main baffle is inserted between the side baffles in the vertical steel pipe and used for fixing the height of the floating bed platform.

[0010] As preferred, the bottom end of the vertical steel pipe is anchored on the riverbed through an anchor block, a chute is vertically arranged on one side of the vertical steel pipe, a sliding block is slidably arranged in the chute, one end of a sliding rod is hingedly connected to the sliding block, and the other end of the sliding rod is hingedly connected to the bottom of the floating bed platform.

[0011] As preferred, an electric wire is arranged in the fixed rod connected to the bank, and used for electrifying the electrical equipment of the floating bed platform.

[0012] As preferred, a composite fiber floating island plate is arranged on the upper layer of the floating bed platform as an ecological plant carrier, holes are cut on the surface of the composite fiber floating island plate for subsequent plant cultivation, an anti-ultraviolet coating is coated on the surface of the composite fiber floating island plate, polyester fiber plates are arranged on the upper and lower surfaces of the composite fiber floating island plate, and plant fiber plates are arranged in the middle of the polyester fiber plates as substrates for plant growth.

[0013] As preferred, a microporous aerator is arranged on the side of the HDPE floating bed plate, and used for forming fine bubbles under water, increasing the contact area of water and air, and improving the dissolved oxygen level in the water body.

[0014] As preferred, a protective net is hung on the lower part of the floating bed platform, and a strip-shaped biological filler is arranged on the protective net.

[0015] The construction method of the river and lake water body purification composite natural biological membrane ecological floating bed system comprises the following steps:

[0016] Step one, erecting a liftable connecting support: burying an anchor block in the water bottom, vertically installing a vertical steel pipe on the anchor block, installing the liftable connecting support on the vertical steel pipe, and installing a water oxygen monitor on the vertical steel pipe;

[0017] Step two, installing a floating bed platform: assembling an upper composite fiber floating island plate and an HDPE floating bed plate to form a floating bed unit, splicing the floating bed units to form a floating bed platform, installing the floating bed platform on the liftable connecting support, and adjusting the height to a proper position, and arranging a small lighting lamp on the upper surface of the floating bed platform;

[0018] Step three, fixing one end of a fixed rod to the bank and connecting the fixed rod to a power supply box, and connecting the other end of the fixed rod to the HDPE floating bed plate.

[0019] Step four, installation of aeration equipment and protective net: install fixed micro-porous aerators on the side of the HDPE floating bed plate, hang the protective net below the HDPE floating bed plate, and hang the strip-shaped biological filler on the protective net;

[0020] Step five, plant aquatic plants in the holes on the composite fiber floating island plate, and finally arrange microorganisms on the floating bed.

[0021] As preferred, in step two, the HDPE floating bed plates are spliced together by fasteners, and the upper composite fiber floating island plate is bound to the HDPE floating bed plate by a nylon rope to form a floating bed platform; the end of the main baffle connected to the rotating shaft is pulled by the pulling rope, so that the main baffle stands upright, at this time, the entire telescopic pipe and the floating bed platform are pulled upward or downward, so that the floating bed platform is adjusted in height as a whole, when the water inlet depth is appropriate, the pulling rope is loosened, and the main baffle is pulled flat under the action of the spring, the main baffle and the side baffle block each other, and the height is fixed.

[0022] The beneficial effects of the present application are:

[0023] 1) The lifting system enables the ecological floating bed to work effectively under different seasonal water level changes, and the rod type combined fixing structure ensures the stability of the floating bed position and is not affected by natural conditions such as water flow and storm waves. At the same time, the multiple fixed structure can also prolong the service life of the system.

[0024] 2) The floating bed platform composed of the composite fiber floating island plate and the HDPE floating bed plate is corrosion-resistant, has large buoyancy, and has a tough structure that can withstand a large enough load to ensure the stability of the floating bed. The two types of floating bed plates are easy to process, transport and assemble, which can save costs, and the materials are more environmentally friendly. The wire hole structure of the composite fiber floating island plate does not require planting substrate, planting pots or additional fixing equipment. After planting plants, it is more suitable for plant growth, dense seedling emergence and the formation of a whole plant root system that is firm and will not collapse, and the landscape effect is good; at the same time, it is more suitable for the growth and reproduction of microorganisms. The modular splicing structure is also conducive to later maintenance and replacement.

[0025] 3) By combining the natural purification capacity of plants on the ecological floating bed with the physical oxygenation effect of the underwater aeration equipment, the dissolved oxygen content in the water body can be increased, and the self-purification ability of the water body can be promoted, thereby achieving the purpose of improving water quality and restoring water ecology. The installation of the water oxygen monitor can further improve the aeration efficiency.

[0026] 4) The lighting lamp on the floating bed platform can improve the river landscape at night, and at the same time, it can improve the photosynthesis efficiency of plants and accelerate the reproduction of microorganisms.

[0027] 5) The hollow structure of the rod type fixing structure can connect the power supply device on the shore to supply power to the electrical equipment on the floating bed.

[0028] 6) The application of immobilized microorganism technology to the ecological floating bed can effectively decompose organic matter, nitrogen, phosphorus and other pollutants in water, thereby improving the efficiency of water purification. At the same time, the ecological floating bed with immobilized microorganisms is easy to monitor and replace, facilitating management and maintenance, and ensuring the long-term operation of the purification system.

[0029] 7) The side baffle and the main baffle arranged on the inner wall of the upright steel pipe can cooperate to adjust the height of the floating bed unit. The end of the main baffle connected with the rotating shaft is pulled by the pull rope, so that the main baffle stands up. At this time, the entire telescopic pipe and the floating bed unit are pulled up or down, so that the overall height of the floating bed unit is adjusted. When the water depth is appropriate, the pull rope is loosened, and the main baffle is pulled flat under the action of the spring, and is blocked by the side baffle, and its height is fixed. The cooperation of the slide rod and the slide groove can make the floating bed unit stable during height adjustment, prevent damage, and also play a certain supporting role. After the position height adjustment is completed, the lock buckle is used to fix the stretching to avoid height changes. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a whole schematic diagram of the river and lake water purification composite natural biofilm ecological floating bed;

[0031] Figure 2 is a schematic diagram of the liftable connecting support structure;

[0032] Figure 3 is Figure 2 is an enlarged view of area A in

[0033] Figure 4 is a schematic diagram of the ecological floating bed platform structure;

[0034] Figure 5 is a principle diagram of the immobilized microorganism water purification;

[0035] Figure 6 is a construction flow chart of the river and lake water purification composite natural biofilm ecological floating bed.

[0036] BRIEF DESCRIPTION OF DRAWINGS: 1 - fixed rod; 2 - anchor block; 3 - upright steel pipe; 4 - protective net; 5 - composite fiber floating island plate; 6 - fastener; 7 - HDPE floating bed plate; 8 - microporous aerator; 9 - telescopic pipe; 10 - slide rod; 11 - aquatic plant; 12 - pull rope; 13 - lock; 14 - slide block; 15 - side baffle; 16 - rotating shaft; 17 - spring; 18 - main baffle; 19 - pulley; 20 - power supply box; 21 - small lighting lamp; 22 - water oxygen monitor; 23 - polyester fiber plate; 24 - plant fiber plate; 25 - nylon rope; 26 - slide groove. DETAILED DESCRIPTION

[0037] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that those skilled in the art can make several modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0038] Example 1

[0039] As one example, such as Figures 1 to 4 As shown, this composite natural biofilm ecological floating bed for purifying river and lake water includes a liftable connecting bracket, anchor block 2, fixing rod 1, floating bed platform, small lighting lamp 21, microporous aerator 8, water oxygen monitor 22, protective net 4 and fastener 6.

[0040] The floating platform is connected to the shore via a fixed rod 1, ensuring the stability of the floating platform and preventing it from being affected by natural conditions such as water flow and waves. The fixed rod 1, which connects to the shore, is made of hollow polyvinyl chloride (PVC). This material has good electrical insulation, water resistance, chemical stability, and acid and alkali resistance. The hollow rod contains electrical wires for powering the electrical equipment on the floating platform.

[0041] The floating bed platform consists of several floating bed units, and the entire floating bed platform is assembled on site from multiple floating bed units using connecting components.

[0042] The floating platform consists of a composite fiber floating island board 5 on the upper layer and an HDPE floating bed board 7 on the lower layer. The composite fiber floating island board 5 is composed of two layers of polyester fiber boards 23 sandwiching a plant fiber board 24 in the middle. The plant fiber board 24 serves as the growth substrate for aquatic plants 11, while the polyester fiber board 23 provides protection. The composite fiber floating island board 5 is bound to the HDPE floating bed board 7 by nylon ropes 25, and the HDPE floating bed boards 7 are connected by fasteners 6. Microporous aerators 8 are installed on the sides of the HDPE floating bed board 7, and small lighting lamps 21 are installed on the upper surface of the composite fiber floating island board 5. Aquatic plants 11 are planted in the holes on the composite fiber floating island board 5.

[0043] The floating platform is equipped with a liftable system, which allows for adjustable water depth to accommodate different water depths via a liftable connecting bracket structure. The liftable connecting bracket includes a telescopic tube 9, a vertical steel pipe 3, side baffles 15, a pull rope 12, a rotating shaft 16, and a spring 17. A locking mechanism 13 is located at the bottom of the floating unit. The bottom end of the vertical steel pipe 3 is inserted into the riverbed. Several side baffles 15 are located at different heights on the inner wall of the vertical steel pipe 3. The telescopic tube 9 is fixed to the bottom of the floating platform and inserted into the vertical steel pipe 3. The pull rope 12 passes through the telescopic tube 9, with one end fixed to the locking mechanism 13 and the other end connected to the main baffle 18 at the bottom of the telescopic tube 9 via the rotating shaft 16. The side baffles 15 and the main baffle 18 on the inner wall of the vertical steel pipe 3 can be adjusted by coordinating with the pull rope 12 to adjust the height of the floating unit and adapt to different water level changes.

[0044] The bottom end of the vertical steel pipe 3 is anchored to the riverbed by the anchor block 2, and a sliding groove 26 is vertically arranged on one side of the vertical steel pipe 3. A sliding block 14 is slidably arranged in the sliding groove 26, and one end of the sliding block 14 is hingedly connected to one end of a sliding rod 10. The other end of the sliding rod 10 is hingedly connected to the bottom of the floating bed platform. A spring 17 is arranged between the main baffle 18 and the bottom end of the telescopic pipe 9, for maintaining the horizontal position of the main baffle 18. The main baffle 18 is inserted between the side baffles 15 in the vertical steel pipe 3, for fixing the height of the floating bed platform.

[0045] Embodiment Two

[0046] As another embodiment, the embodiment two is based on the embodiment one, and proposes a more specific composite natural biological membrane ecological floating bed for purifying river and lake water bodies. The upper layer of the floating bed unit is a composite fiber floating island plate 5, and the lower layer is an HDPE floating bed plate 7.

[0047] The upper layer of the floating bed platform adopts the composite fiber floating island plate 5 as the ecological plant carrier. The composite fiber floating island plate 5 is cut with holes in advance for subsequent plant cultivation during production, and is subjected to ultraviolet protection treatment. The upper and lower layers of the composite fiber floating island plate 5 adopt polyester fiber materials, and the middle layer adopts plant fiber. The polyester fiber plate 23 protects the middle plant fiber plate 24, and the plant fiber plate 24 serves as the substrate for plant growth. The advantages of the composite fiber floating island plate 5 are corrosion resistance, weather resistance, non-dissolution, non-degradation, high toughness, and a service life of up to 20 years. The composite fiber floating island plate 5 has large buoyancy and will not cause a decrease in buoyancy due to water leakage caused by damage. It can be arbitrarily cut and shaped freely and conveniently. The 3D structure has a larger specific surface area, is more suitable for microbial reproduction to form a microbial membrane, has a short biofilm formation time, has good ventilation in the three-dimensional space structure, effectively maintains the dissolved oxygen content of the water body, and has a disc-shaped hole structure without the need for planting substrates, planting pots, or additional fixing equipment. After planting plants, the composite fiber floating island plate 5 is more suitable for plant growth, has dense seedlings and a whole plant root system, is firm and will not fall over, has good landscape effects, and has a root system and a filter bed that are wound together to form a powerful water purification barrier, so that the ecological floating bed has stronger organic matter degradation, absorption, and filtration functions. In addition, small lighting lamps 21 are installed on the upper surface of the floating bed, which can provide landscape effects at night and improve the efficiency of plant photosynthesis.

[0048] The HDPE floating bed plate 7 of the lower layer of the floating bed platform is made of high-density polyethylene (HDPE) plate. HDPE material has high corrosion resistance to most chemicals and can be used in water quality environments of various pH values, suitable for complex water pollution conditions. The material maintains stable physical properties under various climate conditions and is not prone to aging, even under strong ultraviolet radiation. It is suitable for long-term outdoor use. High-density polyethylene has good mechanical strength and rigidity, and is not prone to deformation even under heavy load, which can support the weight of heavy plants and immobilized microorganisms, ensuring the stability of the ecological floating bed. At the same time, HDPE has low density, making the ecological floating bed have good buoyancy, easily floating on the water surface, reducing the disturbance to the water ecology, which can also more stably bear the weight of the upper composite fiber floating island and plants. In addition, HDPE is an environmentally friendly material that can be recycled, reducing the impact on the environment. Using HDPE ecological floating bed helps to improve the green environmental protection standard of the project.

[0049] The degradation of organic pollutants in water by floating bed plant root system microorganisms mainly relies on oxidation, so sufficient oxygen is an important condition for the floating bed system to play a water purification role. The ecological floating bed platform combines the natural purification capacity of plants on the artificial floating island with the physical oxygenation effect of underwater aeration equipment to increase the dissolved oxygen content in the water body and promote the self-purification capacity of the water body, thereby achieving the purpose of improving water quality and restoring water ecology.

[0050] Micro-porous aerators 8 are installed on the side of the second layer of HDPE floating bed plate 7, which forms fine bubbles underwater through aeration equipment, increases the contact area between water and air, and increases the dissolved oxygen level in the water body. The upper composite fiber floating island is planted with aquatic plants 11 such as reeds, cattails, and water hyacinths, which have developed root systems and good water quality purification effects. The photosynthesis of plants on the floating bed can release oxygen into the water during the day, further increasing the dissolved oxygen content of the water body. The high buoyancy and stability of the HDPE floating bed plate 7 ensure that the micro-porous aerators 8 can float stably on the water surface under various climate conditions and are not prone to overturning. Water oxygen monitoring equipment is installed underwater in combination with the work of the micro-porous aerators 8 to save energy and improve aeration efficiency. At the same time, the fixed rod 1 connected to the shore can provide power for the aeration equipment.

[0051] The ecological floating bed system adopts an innovative technology combining ecological floating bed and microbial water treatment. By fixing or attaching beneficial microorganisms on the ecological floating bed, the natural degradation ability of these microorganisms to organic matter, nitrogen, phosphorus and other pollutants in water is utilized to achieve the purpose of purifying water. In the natural floating bed system, natural nitrifying bacteria and denitrifying bacteria are lacking and grow slowly, which seriously restricts the purification capacity of the ecological floating bed system. Therefore, after the upper composite fiber floating island plate 5 is installed, specific microorganisms with specific degradation ability to target pollutants in water, such as nitrifying bacteria, denitrifying bacteria, and phosphate accumulating bacteria, are selected and evenly sprayed. These microorganisms can specifically reduce nitrogen and phosphorus pollution in water. When adjusting the height of the liftable connecting support, the water flow is promoted to pass through the microbial immobilized area, increasing the contact efficiency of water and microorganisms.

[0052] A protective net 4 is hung in the lower water area of the floating bed platform. On the one hand, it can control light to create suitable conditions for the growth of microorganisms. On the other hand, it can separate plants from fish, shrimp and crabs. At the same time, the net is provided with a belt-shaped biological filler, which further enhances the contact area of the floating bed in the polluted water body and enhances the water purification capacity.

[0053] It should be noted that the same or similar parts in this embodiment as in Embodiment One can be mutually referred to and will not be described again in this application.

[0054] Embodiment Three

[0055] As another embodiment, this embodiment is based on Embodiments One and Two and proposes a construction method of the river and lake water purification composite natural biofilm ecological floating bed system, as shown in Figure 6 The method comprises the following steps:

[0056] Step One: Production of floating bed plates. The composite fiber floating island plate 5 is processed, cut and drilled according to the designed size. The HDPE floating bed plate 7 is also customized according to the size. After the plate is formed, the upper surface of the composite fiber floating island plate 5 is treated with a special coating, and an ultraviolet-resistant coating is applied to further improve its weather resistance and sun protection performance.

[0057] Step Two: Building liftable connecting supports. Anchor blocks 2 are buried in the water bottom to be fixed, vertical steel pipes 3 are installed vertically on the anchor blocks 2, and the components of the lifting system are sequentially installed on the vertical steel pipes 3. After the lifting supports are all connected, a water oxygen monitor 22 is installed on the vertical steel pipes 3.

[0058] Step Three: Installation of floating bed platform. The HDPE floating bed plates 7 are spliced together with fasteners 6, and the upper composite fiber floating island plate 5 is bound with the HDPE floating bed plates 7 with nylon ropes 25. The spliced floating bed platform is installed on the liftable connecting supports and the height is adjusted to the appropriate position. After the installation of the floating bed platform is completed, small lighting lamps 21 are arranged on the upper surface.

[0059] Step four: installation of the pole combination fixing structure, hollow polyvinyl chloride (PVC) rods are used as fixing rods 1, one end of which is fixed to the shore, and the other end is connected with the HDPE floating bed plate 7. Wires are connected in the fixing rods 1, and connected with power supply equipment on the shore.

[0060] Step five: installation of the aeration equipment and the protective net 4, the micro-porous aerators 8 are installed on the side of the HDPE floating bed plate 7, which can ensure that the micro-porous aerators 8 can stably float on the water surface under various weather conditions and are not easy to overturn. The micro-porous aerators 8 are powered by the wires in the fixing rods 1. The protective net 4 is hung below the HDPE floating bed plate 7, and the strip-shaped biological fillers are hung on the protective net 4.

[0061] Step six: planting of aquatic plants 11 and placement of microorganisms, the aquatic plants 11 are planted in the holes of the composite fiber floating island plate 5, and the finished plants are preferentially planted, so that the plants grow fast, can provide shade for the ecological floating bed, reduce the damage of ultraviolet rays to the floating bed, and prolong the service life of the floating bed. Finally, nitrifying bacteria, denitrifying bacteria, phosphate accumulating bacteria and other microorganisms are arranged on the floating bed.

[0062] Example four

[0063] As another embodiment, this embodiment four is based on example three, and the principle of adjustable water depth of the floating bed is shown in Figure 2 .

[0064] The side baffle 15 and the main baffle 18 arranged on the inner wall of the vertical steel pipe 3 can cooperate to adjust the height of the floating bed unit. The height of the floating bed unit is adjusted by pulling the main baffle 18 connected to the end of the rotating shaft 16 through the pulley 19 and the pull rope 12, so that the main baffle 18 stands up. At this time, the entire telescopic pipe 9 and the floating bed unit are pulled up or down, so that the overall height of the floating bed unit is adjusted. When the water depth is appropriate, the pull rope 12 is loosened, and the main baffle 18 is pulled flat under the action of the spring 17, and is blocked by the side baffle 15. The height is fixed. The cooperation of the slide rod 10 and the slide groove 26 can make the floating bed unit stable during height adjustment, prevent damage, and also play a certain supporting role. After the position height adjustment is completed, the lock buckle 13 is used to fix the stretch, so as to avoid the change of height.

[0065] The principle of purification of water body by immobilized microorganisms is shown in Figure 5As shown, the artificial screening special microbial flora is fixed on the substrate, when the odor in the sewage passes through the surface of the substrate, those microbial flora which can obtain the nutrient source from the odor will get rapid growth, reproduction under the conditions of suitable temperature, humidity, pH value, etc. and form a biological membrane on the surface of the substrate, when the odor passes through the biological membrane, the organic matter is absorbed by the water layer on the surface of the biological membrane and then is adsorbed and degraded by the microorganism, and the purified regenerated water remains in the river. The essence of the pollutant removal is that the odor is absorbed, metabolized by the microorganism and provides energy for the plants on the substrate, promotes the photosynthesis of the plants.

[0066] In the later use, the floating bed plate needs to be checked and maintained regularly, such as repairing or replacing the aging or damaged parts in time to keep it in the best state. The circuit and electrical equipment on the ecological floating bed are checked regularly to prevent safety accidents. The water quality change and microbial activity are monitored regularly, and the inactivated microorganisms are adjusted or replaced in time to ensure the purification efficiency of the ecological floating bed.

[0067] It should be noted that the same or similar parts in this embodiment and example four can be mutually referred to, and will not be described in detail in this application.

[0068] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be mutually referred to.

Claims

1. A construction method of a river and lake water body purification composite natural biofilm ecological floating bed system, characterized in that, The river and lake water purification composite natural biological membrane ecological floating bed system comprises a liftable connecting support, an anchor block, a fixing rod, a floating bed platform, a small lighting lamp, a microporous aerator, a water oxygen monitor, a protective net and a fastener; The floating bed platform is connected to the bank side through the fixing rod, and the floating bed platform comprises a plurality of floating bed units, the upper layer of the floating bed unit is a composite fiber floating island plate, and the lower layer is an HDPE floating bed plate; The liftable connecting support comprises a telescopic pipe, a vertical steel pipe, a side baffle, a pull rope, a rotating shaft and a spring, the bottom of the floating bed unit is provided with a locking buckle, the bottom end of the vertical steel pipe is inserted into the riverbed, a plurality of side baffles are arranged on the inner wall of the vertical steel pipe at different heights, the telescopic pipe is fixed to the bottom of the floating bed platform, the telescopic pipe is inserted into the vertical steel pipe, the pull rope is arranged in the telescopic pipe, one end of the pull rope is fixed to the locking buckle, the other end of the pull rope is connected to the main baffle through the rotating shaft at the bottom of the telescopic pipe, the spring is arranged between the main baffle and the bottom end of the telescopic pipe, and the spring is used for maintaining the horizontal position of the main baffle, the main baffle is inserted between the side baffles in the vertical steel pipe, and the height of the floating bed platform is fixed; The bottom end of the vertical steel pipe is anchored to the riverbed through the anchor block, a vertical sliding groove is arranged on one side of the vertical steel pipe, a sliding block is slidably arranged in the sliding groove, one end of the sliding block is hingedly connected to the sliding rod, and the other end of the sliding rod is hingedly connected to the bottom of the floating bed platform; The upper layer of the floating bed platform adopts the composite fiber floating island plate as the ecological plant carrier, holes are cut on the surface of the composite fiber floating island plate for subsequent plant cultivation, the surface of the composite fiber floating island plate is coated with an anti-ultraviolet coating, and the upper and lower surfaces of the composite fiber floating island plate are made of polyester fiber plates, and plant fiber plates are arranged in the polyester fiber plates as the substrates for plant growth; The method comprises the following steps; Step one, building a liftable connecting support: burying an anchor block in the water bottom, vertically installing a vertical steel pipe on the anchor block, installing the liftable connecting support on the vertical steel pipe, and installing a water oxygen monitor on the vertical steel pipe; Step two, installing a floating bed platform: assembling an upper composite fiber floating island plate and an HDPE floating bed plate to form a floating bed unit, splicing the floating bed units to form the floating bed platform, installing the floating bed platform on the liftable connecting support, adjusting the height to a suitable position, and arranging a small lighting lamp on the upper surface of the floating bed platform; the HDPE floating bed plates are spliced together by fasteners, and the upper composite fiber floating island plate is bound to the HDPE floating bed plates by nylon ropes to form the floating bed platform; The pull rope pulls the end connected to the rotating shaft, so that the main baffle stands up, at this time, the entire telescopic pipe and the floating bed platform are pulled upward or downward, so that the floating bed platform is lifted as a whole, when the water depth is appropriate, the pull rope is loosened, the main baffle is pulled flat under the action of the spring, the main baffle and the side baffles block each other, and the height is fixed; Step three, one end of the fixing rod is fixed to the bank side and connected to a power supply box, and the other end is connected to the HDPE floating bed plate; Step four, installation of the aeration equipment and the protective net: installing the microporous aerator on the side of the HDPE floating bed plate, hanging the protective net below the HDPE floating bed plate, and hanging the strip-shaped biological filler on the protective net; Step five, planting aquatic plants in the holes of the composite fiber floating island plate, and finally arranging microorganisms on the floating bed.

2. The construction method of the river-lake water body purification composite natural biofilm ecological floating bed system according to claim 1, characterized in that: The inside of the fixing rod connected to the bank side is connected with an electric wire for electrifying the electrical equipment of the floating bed platform.

3. The construction method of the river-lake water body purification composite natural biofilm ecological floating bed system according to claim 1, characterized in that: HDPE floating bed plate side is provided with microporous aerator, is used in forming micro bubble under water, increases water and air's contact area, raises the dissolved oxygen level in water body.

4. The construction method of the river-lake water body purification composite natural biofilm ecological floating bed system according to claim 1, characterized in that: The lower part of the floating bed platform is hung with a protective net, and the protective net is provided with a strip-shaped biological filler.

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