Biological membrane coupled magnetic field enhanced constructed wetland device

Abstract

The utility model discloses a biological membrane coupled magnetic field reinforced artificial wetland device, which belongs to the technical field of artificial wetlands and comprises a shell, a biological membrane unit, an artificial wetland unit and an adsorption unit which are sequentially arranged in the shell from left to right. A water inlet pipe and a water outlet pipe are formed on the two sides of the shell respectively, a magnetic strengthening assembly is arranged in the constructed wetland unit, and the magnetic strengthening assembly comprises a permanent magnet, an electromagnetic coil and an electromagnetic generator. The device disclosed by the utility model has the beneficial effects that the device is connected to sewage and wastewater to be treated, efficient nitrogen and carbon removal can be realized through the multi-stage effect of cooperative treatment of the biological membrane unit, the constructed wetland unit and the adsorption unit, and meanwhile, the adjustable magnetic field strengthening assembly is arranged in the device, so that the device is more stable and reliable. The growth and metabolism of microorganisms can be promoted through an adjustable magnetic effect, and the pollutant removal efficiency of the system is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of artificial wetland, specifically, a biological membrane coupling magnetic field reinforced artificial wetland device. BACKGROUND

[0002] As an ecological water treatment process, artificial wetland can effectively reduce the pollutant concentration in water body through the synergistic effect of internal substrate, plants and microorganisms, and has been widely used in recent years to treat urban and rural domestic sewage, industrial and agricultural wastewater, etc. Among them, the vertical flow artificial wetland has the advantages of small land occupation, large hydraulic load, better removal effect of nitrogen and phosphorus in water body, etc. and is widely used.

[0003] However, the traditional single artificial wetland often cannot fully exert its pollutant removal efficiency in actual application, and the pollutant reduction efficiency in water body is low and unstable, resulting in water quality higher than the discharge standard, thereby polluting the surrounding water environment. Its practicability and durability need to be improved. At the same time, the invention patent with publication number CN116693041A discloses a magnetic field reinforced vertical flow artificial wetland device, which comprises a water storage unit, a water supply unit, an artificial wetland unit, a biological membrane unit and a magnetic field reinforcement generating device. The artificial wetland unit comprises a plexiglass wetland tank body, a water inlet is provided at one side of the upper part, and a water outlet is provided at the other side of the bottom; a sieve hole partition is provided between the biological membrane unit and the artificial wetland unit; a filler layer is provided in the artificial wetland unit; the water storage unit comprises a water storage barrel and a first pipeline for connecting the water storage barrel, the water storage barrel is connected with the water outlet through the first pipeline; the water supply unit comprises a submersible pump and a second pipeline for connecting the submersible pump, the submersible pump is connected with the water inlet through the second pipeline; the magnetic field reinforcement generating device comprises a ferrite permanent magnet, which is uniformly distributed in the plexiglass wetland tank body. It is inconvenient to quickly control the control effect of the magnetic field reinforcement generating device, and the pollutant removal efficiency needs to be further improved. The practicability and durability need to be improved. UTILITY MODEL CONTENTS

[0004] In order to overcome the problems in the prior art that the pollutant removal efficiency of the traditional single artificial wetland is often difficult to fully exert in actual application, the pollutant reduction efficiency in water body is low and unstable, the water quality is higher than the discharge standard, thereby polluting the surrounding water environment, and the practicability and durability need to be improved, the utility model provides a biological membrane coupling magnetic field reinforced artificial wetland device, which comprises an outer shell, a biological membrane unit, an artificial wetland unit and an adsorption unit. The biological membrane unit, the artificial wetland unit and the adsorption unit are arranged in the outer shell from left to right, and water inlet pipes and water outlet pipes are formed on both sides of the outer shell.

[0005] The biofilm unit includes several uniformly distributed biofilm spheres, the constructed wetland unit consists of adjacent ceramsite and gravel zones, and the adsorption unit includes several magnetic biochar.

[0006] The constructed wetland unit is equipped with a magnetic reinforcement component, which includes a permanent magnet, an electromagnetic coil, and an electromagnetic generator. Several permanent magnets are inserted inside the constructed wetland unit, and each permanent magnet is fitted with an electromagnetic coil. Each electromagnetic coil is connected to the electromagnetic generator.

[0007] By connecting the device to the wastewater to be treated, the multi-stage treatment involving the biofilm unit, constructed wetland unit, and adsorption unit can achieve efficient nitrogen and carbon removal. At the same time, the device is equipped with an adjustable magnetic field enhancement component, which can promote the growth and metabolism of microorganisms through adjustable magnetic effects, further improving the system's removal efficiency of pollutants. This makes the device suitable for the deep treatment of domestic sewage, agricultural wastewater, and certain recalcitrant organic matter or specific pollutants (such as drug residues and heavy metals). It also features long-term stability and simple operation and maintenance, thus greatly improving the practicality of the device.

[0008] Preferably, the biofilm sphere has a diameter of 50 mm and is filled with filler material, which includes elastic fibers, volcanic rock, gravel, sponge and ecological mat.

[0009] Preferably, the ceramsite zone and the gravel zone are each composed of a number of uniformly distributed ceramsite and gravel.

[0010] Preferably, the water inlet pipe is connected to the top of one side of the outer casing, and the water outlet pipe is connected to the bottom of the other side of the outer casing, with valves respectively installed on the water inlet pipe and the water outlet pipe.

[0011] Preferably, the number of permanent magnets is four, and the permanent magnets are made of ferrite material with a size of 150mm×100mm×5mm.

[0012] By interleaving permanent magnets inside the constructed wetland unit, a background magnetic field of fixed intensity can be provided to the constructed wetland unit, and a phase attraction magnetic field can be formed. This magnetic field can promote the growth and metabolism of microorganisms through the magnetic effect, further improving the system's efficiency in removing pollutants. At the same time, electromagnetic coils are set on the surface of the permanent magnets, which can work with an electromagnetic generator. The total magnetic field strength can be finely adjusted by controlling the electromagnetic generator, thereby better achieving magnetic field enhancement.

[0013] Preferably, partitions are provided at the connection points between the biofilm unit and the constructed wetland unit, as well as at the connection points between the constructed wetland unit and the adsorption unit, and the partitions are provided with a plurality of water filtration sieve holes.

[0014] Preferably, the outer shell is made of fiberglass.

[0015] Preferably, the outer surface of the housing is provided with a corrosion-resistant coating, and the inner wall of the housing is provided with a waterproof membrane.

[0016] The biofilm unit, constructed wetland unit, and adsorption unit are separated by partitions with filter screens, allowing water to flow through in an orderly manner and be treated sequentially. The waterproof membrane installed on the inner wall of the outer shell can improve its water-proofing ability.

[0017] Preferably, the electromagnetic generator is mounted on the side wall of the housing, and the electromagnetic generator is electrically connected to the electromagnetic coil via a waterproof wire.

[0018] Preferably, the bottom of the housing is provided with a mounting base.

[0019] The mounting base facilitates the installation and fixation of the device on the ground or underground.

[0020] Beneficial effects:

[0021] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0022] (1) The device is connected to the sewage to be treated. Through the multi-stage action of the biofilm unit, artificial wetland unit and adsorption unit, efficient denitrification and carbon removal can be achieved. At the same time, the device is equipped with an adjustable magnetic field enhancement component, which can promote the growth and metabolism of microorganisms through adjustable magnetic effect, further improving the system's removal efficiency of pollutants. This makes the device suitable for the deep treatment of domestic sewage, agricultural wastewater and certain recalcitrant organic matter or specific pollutants (such as drug residues and heavy metals). It also has the characteristics of long-term stability and easy operation and maintenance, which greatly improves the practicality of the device.

[0023] (2) By interleaving permanent magnets inside the artificial wetland unit, a background magnetic field of fixed intensity can be provided to the artificial wetland unit and a magnetic field of attraction can be formed. It can promote the growth and metabolism of microorganisms through magnetic effect, further improving the system's removal efficiency of pollutants. At the same time, electromagnetic coils are provided on the surface of the permanent magnets, which can be used in conjunction with the electromagnetic generator. The total magnetic field strength can be finely adjusted by controlling the electromagnetic generator, thereby better achieving magnetic field enhancement.

[0024] (3) The biofilm unit, the artificial wetland unit and the adsorption unit are separated by a partition with a filter screen, which allows water to flow through in an orderly manner and be treated in sequence. The waterproof membrane set on the inner wall of the shell can improve its water-proof ability. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0026] Fig. 1 This is a schematic diagram of the overall structure of the biofilm coupled magnetic field enhanced artificial wetland device of this utility model;

[0027] Fig. 2 This is a schematic diagram of the upper partition of the biofilm coupled magnetic field enhanced artificial wetland device of this utility model;

[0028] Fig. 3 This is a schematic diagram of the internal structure of the outer shell of the biofilm coupled magnetic field enhanced artificial wetland device of this utility model.

[0029] In the diagram: 1. Outer shell; 2. Biofilm unit; 3. Constructed wetland unit; 4. Adsorption unit; 5. Biofilm ball; 6. Ceramsite; 7. Gravel; 8. Magnetic biochar; 9. Permanent magnet; 10. Electromagnetic coil; 11. Electromagnetic generator; 12. Inlet pipe; 13. Outlet pipe; 14. Baffle; 15. Mounting base; 16. Waterproof membrane; 17. Corrosion-resistant coating; 18. Filter screen. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0031] This embodiment connects the device to the wastewater to be treated. Through the multi-stage action of the device's biofilm unit, constructed wetland unit, and adsorption unit working in synergy, it can achieve highly efficient nitrogen and carbon removal. Simultaneously, the device is equipped with an adjustable magnetic field enhancement component, which can promote the growth and metabolism of microorganisms through adjustable magnetic effects, further improving the system's pollutant removal efficiency. This makes the device suitable for the deep treatment of domestic sewage, agricultural wastewater, and certain recalcitrant organic matter or specific pollutants (such as drug residues and heavy metals). It also features long-term stability and easy operation and maintenance, thus greatly improving the device's practicality. The specific implementation method is as follows:

[0032] like Figs. 1 to 3 As shown, a biofilm coupled magnetic field enhanced constructed wetland device includes a shell 1, a biofilm unit 2, a constructed wetland unit 3, and an adsorption unit 4. The biofilm unit 2, constructed wetland unit 3, and adsorption unit 4 are arranged sequentially from left to right inside the shell 1. An inlet pipe 12 and an outlet pipe 13 are formed on both sides of the shell 1, respectively. The biofilm unit 2 includes several evenly distributed biofilm spheres 5. The constructed wetland unit 3 is composed of adjacent ceramsite areas and gravel areas. The adsorption unit 4 includes several magnetic biochar 8. A magnetic enhancement component is arranged inside the constructed wetland unit 3. The magnetic enhancement component includes permanent magnets 9, electromagnetic coils 10, and an electromagnetic generator 11. Several permanent magnets 9 are inserted inside the constructed wetland unit 3. Each permanent magnet 9 is surrounded by an electromagnetic coil 10. Each electromagnetic coil 10 is connected to the electromagnetic generator 11. By connecting the device to the wastewater to be treated, the multi-stage treatment process involving the biofilm unit 2, the constructed wetland unit 3, and the adsorption unit 4 can achieve efficient nitrogen and carbon removal. At the same time, the device is equipped with an adjustable magnetic field enhancement component, which can promote the growth and metabolism of microorganisms through adjustable magnetic effects, further improving the system's removal efficiency of pollutants. This makes the device suitable for the deep treatment of domestic sewage, agricultural wastewater, and certain recalcitrant organic matter or specific pollutants (such as drug residues and heavy metals). It also features long-term stability and easy operation and maintenance, thus greatly improving the device's practicality.

[0033] The biofilm ball 5 has a diameter of 50 mm and is filled with filler materials, including elastic fibers, volcanic rock, gravel, sponge, and ecological mat. The biofilm balls 5 are mixed together after filling, and all filler materials must be cleaned and dried before use.

[0034] Biofilm unit 2 can initially remove organic matter (COD), some ammonia nitrogen and total phosphorus, transform pollutant forms, reduce the load on subsequent treatment units, prevent clogging or toxic effects, and optimize water quality parameters to improve overall treatment efficiency. At the same time, adding biofilm unit 2 at the front end of the device can ensure that subsequent treatment steps operate under more stable and suitable conditions, thereby improving the removal efficiency of the entire device, especially for complex pollutants such as heavy metals and recalcitrant organic matter.

[0035] The expanded clay zone and the gravel zone are composed of several evenly distributed expanded clay particles 6 and gravel 7, respectively. The packing material of the constructed wetland unit 3, from left to right, consists of expanded clay particles 6 (particle size 4-6 mm) and gravel 7 (particle size 6-9 mm). By utilizing the synergistic effect between the microbial community in the biofilm unit 2 and the substrate in the constructed wetland unit 3, the nitrification and denitrification performance of the device can be enhanced.

[0036] The adsorption unit 4 is filled with magnetic biochar 8 (particle size 2-4 mm), which can adsorb residual phosphorus (TP), heavy metals (such as Pb²⁺, Cd²⁺) and recalcitrant organic matter, further improving the pollutant removal efficiency. The magnetic biochar 8 is loaded with nano-iron oxide, combining high adsorption capacity with magnetism.

[0037] The inlet pipe 12 is connected to the top of one side of the outer casing 1, and the outlet pipe 13 is connected to the bottom of the other side of the outer casing 1. Valves are installed on the inlet pipe 12 and the outlet pipe 13 respectively. The inlet pipe 12 is connected to a sewage and wastewater storage structure, and the outlet pipe 13 is connected to an external discharge pipe for purified water.

[0038] There are four permanent magnets 9, made of ferrite material, with dimensions of 150mm × 100mm × 5mm. These permanent magnets 9, arranged alternately within the constructed wetland unit 3, provide a background magnetic field of fixed intensity and form an attractive magnetic field. This magnetic field promotes the growth and metabolism of microorganisms through the magnetic effect, further improving the system's pollutant removal efficiency. Simultaneously, electromagnetic coils 10 are installed on the surface of the permanent magnets 9, which can cooperate with the electromagnetic generator 11. By adjusting the electromagnetic generator 11, the total magnetic field strength can be fine-tuned, thereby better strengthening the magnetic field and promoting the growth and metabolism of microorganisms through the magnetic effect, further improving the system's pollutant removal efficiency.

[0039] Partitions 14 are provided at the connection points between biofilm unit 2 and constructed wetland unit 3, and at the connection points between constructed wetland unit 3 and adsorption unit 4. Each partition 14 has a plurality of filter screen holes 18. By using the partitions 14 with filter screen holes 18, the biofilm unit 2, constructed wetland unit 3 and adsorption unit 4 are separated, allowing water to flow through in an orderly manner and be treated sequentially.

[0040] The outer casing 1 is made of fiberglass. This gives the outer casing 1 good strength and makes it less prone to damage.

[0041] The outer surface of the housing 1 is provided with a corrosion-resistant coating 17, and the inner wall of the housing 1 is provided with a waterproof membrane 16. The waterproof membrane 16 provided on the inner wall of the housing 1 can improve its water-proof ability, and the corrosion-resistant coating 17 provided on the outside of the housing 1 can improve its corrosion resistance, thereby further improving the service life of the device.

[0042] The electromagnetic generator 11 is installed on the side wall of the housing 1, and the electromagnetic generator 11 is electrically connected to the electromagnetic coil 10 through a waterproof wire.

[0043] The bottom of the outer casing 1 is provided with a mounting base 15. The mounting base 15 facilitates the installation and fixation of the device on the ground or underground. The bottom of the mounting base 15 is provided with bolt holes for connecting suitable connectors to help secure the device.

[0044] Working Principle: The device is connected to the wastewater to be treated. Through the multi-stage action of the biofilm unit, constructed wetland unit, and adsorption unit working in synergy, it can achieve efficient nitrogen and carbon removal. Simultaneously, the device is equipped with an adjustable magnetic field enhancement component, which promotes the growth and metabolism of microorganisms through adjustable magnetic effects, further improving the system's pollutant removal efficiency. This makes the device suitable for the deep treatment of domestic sewage, agricultural wastewater, and certain recalcitrant organic matter or specific pollutants (such as drug residues and heavy metals). It also features long-term stability and easy operation and maintenance, greatly improving the device's practicality. (The last sentence appears to be incomplete and possibly refers to a different device.) The permanent magnets inside the constructed wetland unit can provide a fixed-intensity background magnetic field and form a phase attraction magnetic field. This magnetic effect can promote the growth and metabolism of microorganisms, further improving the system's efficiency in removing pollutants. At the same time, electromagnetic coils are set on the surface of the permanent magnets, which can work with an electromagnetic generator. The total magnetic field strength can be finely adjusted by controlling the electromagnetic generator, thereby better achieving magnetic field enhancement. The biofilm unit, constructed wetland unit, and adsorption unit are separated by partitions with filter screens, allowing water to flow through in an orderly manner and be treated sequentially. The waterproof membrane set on the inner wall of the outer shell can improve its water-proofing ability.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A biofilm-coupled magnetic field-enhanced constructed wetland device, characterized in that, It includes an outer shell (1), a biofilm unit (2), an artificial wetland unit (3) and an adsorption unit (4). The biofilm unit (2), the artificial wetland unit (3) and the adsorption unit (4) are arranged in sequence from left to right inside the outer shell (1). An inlet pipe (12) and an outlet pipe (13) are formed on both sides of the outer shell (1). The biofilm unit (2) includes several uniformly distributed biofilm spheres (5), the artificial wetland unit (3) consists of adjacent ceramsite and gravel zones, and the adsorption unit (4) includes several magnetic biochar (8). The artificial wetland unit (3) is equipped with a magnetic reinforcement component, which includes a permanent magnet (9), an electromagnetic coil (10) and an electromagnetic generator (11). Several permanent magnets (9) are inserted inside the artificial wetland unit (3). Each permanent magnet (9) is fitted with an electromagnetic coil (10) on its outside. Each electromagnetic coil (10) is connected to the electromagnetic generator (11).

2. The biofilm-coupled magnetic field-enhanced constructed wetland device according to claim 1, characterized in that, The biofilm sphere (5) has a diameter of 50 mm and is filled with filler material, which includes elastic fiber, volcanic rock, gravel, sponge and ecological mat.

3. The biofilm-coupled magnetic field-enhanced constructed wetland device according to claim 1, characterized in that, The ceramsite zone and the gravel zone are respectively composed of several uniformly distributed ceramsite (6) and gravel (7).

4. The biofilm-coupled magnetic field-enhanced constructed wetland device according to claim 1, characterized in that, The inlet pipe (12) is connected to the top of one side of the outer shell (1), and the outlet pipe (13) is connected to the bottom of the other side of the outer shell (1). Valves are provided on the inlet pipe (12) and the outlet pipe (13).

5. The biofilm-coupled magnetic field-enhanced constructed wetland device according to claim 1, characterized in that, The number of permanent magnets (9) is four, and the permanent magnets (9) are made of ferrite material with a size of 150mm×100mm×5mm.

6. The biofilm-coupled magnetic field-enhanced constructed wetland device according to claim 1, characterized in that, The connection between the biofilm unit (2) and the constructed wetland unit (3) and the connection between the constructed wetland unit (3) and the adsorption unit (4) are respectively provided with partitions (14), and a number of water filtration sieve holes (18) are opened on the partitions (14).

7. The biofilm-coupled magnetic field-enhanced constructed wetland device according to claim 1, characterized in that, The outer shell (1) is made of fiberglass.

8. The biofilm-coupled magnetic field-enhanced constructed wetland device according to claim 1, characterized in that, The outer surface of the outer shell (1) is provided with a corrosion-resistant coating (17), and the inner wall of the outer shell (1) is provided with a waterproof membrane (16).

9. A biofilm-coupled magnetic field-enhanced constructed wetland device according to claim 1, characterized in that, The electromagnetic generator (11) is installed on the side wall of the housing (1), and the electromagnetic generator (11) is electrically connected to the electromagnetic coil (10) through a waterproof wire.

10. A biofilm-coupled magnetic field-enhanced constructed wetland device according to claim 1, characterized in that, The bottom of the outer casing (1) is provided with a mounting base (15).

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