An assembled wetland device and a wetland system having the same

Abstract

The application provides an assembled wetland device and a wetland system, relates to the technical field of sewage treatment, and solves the technical problems of complex installation operation and high operation and maintenance difficulty of the existing wetland structure. The device comprises at least one wetland unit module, the wetland unit module comprises a support frame, a filler unit and a plant unit in the support frame, water distribution units are formed on four side plates and a bottom plate of the support frame, and a water distribution assembly is formed on the top of the support frame, so that a plurality of mode water flow channels such as uplink vertical subsurface flow, downlink vertical subsurface flow and horizontal subsurface flow are formed in the wetland unit module. The application can construct a plurality of wetland forms such as horizontal subsurface flow, uplink vertical subsurface flow and downlink vertical subsurface flow, and is suitable for different application scenarios. The wetland unit module of the application has a simple structure, can form an assembled wetland device composed of a plurality of wetland unit modules through mutual splicing, is convenient to install, saves construction time, and is easy to operate and maintain.

Description

Technical Field

[0001] This invention relates to the field of constructed wetland technology, and in particular to a prefabricated wetland device and a wetland system having the device, which is applicable to various application scenarios such as municipal tailwater, river and lake water, rural sewage, water sources and ecological landscapes. Background Technology

[0002] Constructed wetlands are artificially built and controlled wetland-like surfaces. Wastewater and sludge are systematically introduced onto these artificial wetlands, and the wastewater and sludge are treated through the synergistic physical, chemical, and biological processes of soil, artificial media, plants, and microorganisms during their flow in a specific direction. Constructed wetlands are increasingly used due to their good effluent quality, lower investment and maintenance costs, and excellent ecological landscape. However, traditional constructed wetlands still face various problems throughout their design, construction, and operation, such as effluent quality stability, space requirements, winter performance, and filler blockage. Therefore, modular wetlands have emerged and are gradually entering various stages, including small-scale and pilot-scale testing. Modular wetlands show great potential in solving problems such as slow construction speed and high maintenance difficulty, but they still have various problems such as relatively high cost, lack of standardized specifications, inconvenient maintenance, and difficulty in adjusting water flow direction. Therefore, there is an urgent need to provide a simple wetland module structure that allows for easy adjustment of water flow direction. Summary of the Invention

[0003] The purpose of this invention is to provide a prefabricated wetland device and a wetland system incorporating the device, thereby solving the technical problems of complex installation, operation, and maintenance of modular wetland structures in the prior art. The numerous technical effects of the preferred solutions among the many technical solutions provided by this invention are detailed below.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] The present invention provides a prefabricated wetland device, including at least one wetland unit module. The wetland unit module includes a support frame and a filler unit located within the support frame. Water distribution units are formed on the four side plates and the bottom plate of the support frame, and a water distribution assembly is formed on the top of the support frame, so that multiple modes of water flow channels can be formed within the wetland unit module, which can correspond to upward vertical subsurface flow, downward vertical subsurface flow, or horizontal subsurface flow.

[0006] According to a preferred embodiment, the water distribution unit has a plurality of wall holes, which are arranged in a multi-row, multi-column pattern on each water distribution unit.

[0007] According to a preferred embodiment, the wetland unit module further includes a baffle for shielding the water distribution unit, the baffle being detachably installed inside the side plate of the support frame to form different subsurface flow patterns.

[0008] According to a preferred embodiment, a first locking element is provided at the top corner of the support frame, and a first locking groove is provided at the bottom of the base plate of the support frame and at a position corresponding to the first locking element. The first locking groove of one support frame can be fixed to the first locking element of the other support frame so that the two support frames are interlocked.

[0009] According to a preferred embodiment, the water distribution component is a water distribution trough. A second locking member is provided at the top of the two long side plates of the support frame, and a second locking groove corresponding to the second locking member is provided at the bottom of the water distribution trough. Alternatively, a second locking groove is provided at the top of the two long side plates of the support frame, and a second locking member corresponding to the second locking groove is provided at the bottom of the water distribution trough, so that the water distribution trough is connected to the second locking member through the second locking groove.

[0010] According to a preferred embodiment, lifting holes are provided on the two long side plates of the support frame, and a channel is formed on the bottom plate of the support frame at the position corresponding to the lifting holes, the channel being connected to the lifting holes on both sides.

[0011] According to a preferred embodiment, the support frame is an integral structure, and the water distribution unit and the support frame are formed as an integral structure.

[0012] According to a preferred embodiment, the support frame is assembled from a long side plate, a short side plate, and a bottom plate, wherein the connection between the long side plate and the short side plate is formed by corner posts, and the long side plate and the short side plate are respectively engaged with the bottom plate.

[0013] According to a preferred embodiment, the long side plate and the short side plate are provided with water distribution unit plates, and the water distribution unit located on the side plate is formed on the water distribution unit plate.

[0014] Installation positions for installing water distribution unit plates are reserved on the long side plate and the short side plate respectively. A locking block is provided around the perimeter of the installation position. The water distribution unit plate is provided with corresponding locking holes. The water distribution unit plate is installed at the installation position and its locking holes are engaged with the locking blocks.

[0015] According to a preferred embodiment, it further includes a plant unit planted within the filler unit of the wetland unit module located above.

[0016] The present invention also provides a wetland system, including the prefabricated wetland device, and further including a water inlet device and a water outlet device, wherein the water inlet device is connected to a water distribution unit on one side of a short side plate of the wetland unit module of the prefabricated wetland device, and the water outlet device is connected to a water distribution unit on the other short side plate.

[0017] Alternatively, the water inlet device is connected to the water distribution component of the wetland unit module of the prefabricated wetland device, and the water outlet device is connected to the water distribution unit on the bottom plate of the wetland unit module.

[0018] The prefabricated wetland device can be placed in a matching pool or a traditional pool, and the inner wall and bottom of the matching pool or traditional pool located outside the wetland unit module of the prefabricated wetland device are provided with an anti-seepage structure, which includes one or a combination of concrete, clay, geomembrane, HDPE geomembrane, bentonite or waterproof blanket.

[0019] Based on the above technical solution, the prefabricated wetland device and wetland system having the structure of the present invention have at least the following technical effects:

[0020] The prefabricated wetland device of the present invention includes at least one wetland unit module. The wetland unit module includes a support frame and a filling unit located within the support frame. Water distribution units are formed on the four side plates and the bottom plate of the support frame, and a water distribution trough is formed on the top of the support frame, thereby creating multiple flow channels within the wetland unit module that can accommodate upward vertical subsurface flow, downward vertical subsurface flow, or horizontal subsurface flow. By setting water distribution units on the four side plates and the bottom plate of the support frame and a water distribution trough on the top, the present invention enables free infiltration in multiple directions, forming multiple flow channels corresponding to horizontal subsurface flow, upward vertical subsurface flow, and downward vertical subsurface flow. This allows for the construction of various wetland forms such as horizontal subsurface flow, upward vertical subsurface flow, and downward vertical subsurface flow, suitable for different application scenarios and achieving good treatment results. Furthermore, the wetland unit module of the present invention has a simple structure and can be assembled into a prefabricated wetland device composed of multiple wetland unit modules. Installation is convenient, construction and maintenance are simple, saving construction time and shortening the project cycle. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the structure of a prefabricated wetland device according to an exemplary embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of a prefabricated wetland device according to an exemplary embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of a prefabricated wetland device according to an exemplary embodiment of the present invention;

[0025] Figure 4 This is a structural schematic diagram of a prefabricated wetland device according to another exemplary embodiment of the present invention;

[0026] Figure 5 This is a structural schematic diagram of a prefabricated wetland device according to another exemplary embodiment of the present invention;

[0027] Figure 6 This is a structural schematic diagram of a prefabricated wetland device according to another exemplary embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the support frame in a prefabricated wetland device, which is another exemplary embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram of the water distribution unit plate in a prefabricated wetland device, which is another exemplary embodiment of the present invention.

[0030] In the diagram: 1-Wetland unit module; 2-Plant unit; 11-Support frame; 12-Filling unit; 13-Wall hole; 14-Water distribution trough; 15-First clamp; 16-Second clamp; 17-Lifting hole; 18-Passage; 111-Long side plate; 112-Short side plate; 113-Base plate; 114-Corner post; 115-Water distribution unit plate; 116-Clamping block; 117-Clamping hole. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0032] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings.

[0033] Example 1

[0034] This embodiment provides a prefabricated wetland device, such as... Figures 1 to 3As shown, the invention includes at least one wetland unit module 1, which comprises a support frame 11 and a packing unit 12 located within the support frame 11. Water distribution units are formed on the four side plates and the bottom plate of the support frame 11, and a water distribution assembly is formed on the top of the support frame 11. This allows the wetland unit module 1 to form multiple flow channels capable of corresponding to upward vertical subsurface flow, downward vertical subsurface flow, or horizontal subsurface flow. By setting water distribution units on the four side plates and the bottom plate of the support frame and a water distribution assembly on the top, this invention enables free infiltration in multiple directions, forming multiple flow channels corresponding to horizontal subsurface flow, upward vertical subsurface flow, and downward vertical subsurface flow. This allows for the construction of various wetland forms such as horizontal subsurface flow, upward vertical subsurface flow, and downward vertical subsurface flow, suitable for different application scenarios and achieving good treatment results. Furthermore, the wetland unit module of this invention has a simple structure and can be assembled into a prefabricated wetland device composed of multiple wetland unit modules, making installation convenient. Maintenance is simple, saving construction time and shortening the project cycle.

[0035] In this embodiment, the water distribution component can be a water distribution tank 14 or a water distribution pipe. This embodiment will be described using a water distribution tank as an example.

[0036] Preferably, in this embodiment, the support frame 11 is a one-piece structure. That is, the support frame 11 is a one-piece molded structure. Preferably, as shown below... Figures 1 to 3 As shown, in this embodiment, the water distribution unit and the support frame 11 are formed as an integral structure. More preferably, as... Figures 1 to 3 As shown, the water distribution unit has multiple wall holes 13, which are arranged in multiple rows and columns on each water distribution unit to allow free water infiltration in multiple directions and form multiple modes of water flow channels. Preferably, the wetland unit module also includes a baffle for shielding the water distribution unit. The baffle is detachably installed on the inside of the side plate of the support frame to form different subsurface flow modes.

[0037] More preferably, a first locking member 15 is provided at the top corner of the support frame 11, and a first locking groove is provided at the bottom of the base plate of the support frame 11, corresponding to the first locking member 15. The first locking groove of one support frame 11 can be fixed to the first locking member 15 of the other support frame 11 so that the two support frames 11 are interlocked. This forms a prefabricated wetland device that can be stacked vertically, such as... Figure 2 As shown. Preferably, as Figure 3 As shown, multiple wetland unit modules can also be arranged horizontally side by side to form a stepped wetland system.

[0038] Preferably, the support frame 11 in this embodiment has a cuboid frame structure. The support frame 11 includes two oppositely arranged long side plates 111, two oppositely arranged short side plates 112, and a base plate. The support frame of the present invention has structural strength and can support the weight of the filler and plants, eliminating the need for additional baffles or retaining walls.

[0039] More preferably, a second locking member 16 is provided at the top of the two long side plates of the support frame 11, and a second locking groove corresponding to the second locking member 16 is provided at the bottom of the water distribution trough 14. This allows the water distribution trough 14 to be connected to the second locking member through the second locking groove. The water distribution trough allows the prefabricated wetland device of the present invention to form an upward or downward water flow channel corresponding to the upward or downward vertical subsurface flow.

[0040] Preferably, lifting holes 17 are provided on the two long side plates of the support frame 11, and a channel 18 is formed on the bottom plate of the support frame 11 at the position corresponding to the lifting holes 17. The channel 18 can be a lifting channel or a forklift channel, and the channel 18 is connected to the lifting holes 17 on both sides. The setting of the lifting channel facilitates the placement of lifting machinery pallets or forklift forks, and allows for lifting through the lifting holes, which facilitates installation and subsequent maintenance.

[0041] Preferably, the system also includes a plant unit 2, which is planted within the filler unit 12 of the wetland unit module 1 located above. The wetland plant unit is one or a combination of plants such as pickerelweed, iris, yellow iris, rush, ribbon grass, and water onion; the overall characteristics of the plants are that they are low-growing, highly resistant, and easy to cultivate. Preferably, the filler unit is one or a combination of materials such as clay ceramsite, recycled ceramsite, resin, polyurethane granules, oyster shells, plastics, and zeolite; the overall characteristics of the filler are that it is lightweight, with an average bulk density of 0.1-2.0 kg / m³. 3 .

[0042] Preferably, the support frame material is one or a combination of PP, ABS, HDPE, and steel wire.

[0043] The prefabricated wetland device of the present invention can be assembled from one or more wetland unit modules. At the same time, by utilizing the porous filler unit and porous water distribution unit of the wetland unit module, multi-directional free infiltration can be achieved, which is convenient for constructing various wetland forms such as horizontal subsurface flow, upward vertical subsurface flow, and downward vertical subsurface flow. It is suitable for different application scenarios such as municipal tailwater, river and lake water, rural sewage, combined sewer overflow sewage, initial rainwater, and ecological landscape, and can be applied to the fields of ecological restoration technology for polluted surface water, domestic sewage treatment technology, and non-point source pollution control.

[0044] Example 2

[0045] This embodiment provides another type of prefabricated wetland device, such as... Figures 4 to 8As shown, the invention includes at least one wetland unit module 1, which comprises a support frame 11 and a filler unit 12 located within the support frame 11. Water distribution units are formed on the four side plates and the bottom plate of the support frame 11, and a water distribution assembly is formed on the top of the support frame 11, enabling the formation of multiple flow channels within the wetland unit module 1 that can accommodate upward vertical subsurface flow, downward vertical subsurface flow, or horizontal subsurface flow. By providing water distribution units on the four side plates and the bottom plate of the support frame, and a water distribution assembly on the top, this invention achieves free infiltration in multiple directions, forming multiple flow channels corresponding to horizontal subsurface flow, upward vertical subsurface flow, and downward vertical subsurface flow. This allows for the construction of various wetland forms, including horizontal subsurface flow, upward vertical subsurface flow, and downward vertical subsurface flow, suitable for different application scenarios and achieving good treatment results. Furthermore, the wetland unit module of this invention has a simple structure and can be assembled into a prefabricated wetland device composed of multiple wetland unit modules, facilitating installation, simplifying operation and maintenance, saving construction time, and shortening the project cycle.

[0046] In this embodiment, the water distribution component can be a water distribution tank 14 or a water distribution pipe. This embodiment will be described using a water distribution tank as an example.

[0047] More preferably, such as Figure 4 As shown, the water distribution unit has multiple wall holes 13, which are arranged in multiple rows and columns on each water distribution unit to allow for free water infiltration in multiple directions and accommodate various water flow patterns. Preferably, the wetland unit module also includes a baffle for shielding the water distribution unit. The baffle is detachably installed on the inside of the side plate of the support frame to form different subsurface flow patterns.

[0048] Preferably, such as Figure 7 As shown, the support frame 11 in this embodiment has a cuboid frame structure. The support frame 11 includes two oppositely arranged long side plates 111, two oppositely arranged short side plates 112, and a base plate. Preferably, in this embodiment, the support frame 11 is formed by splicing the long side plates 111, the short side plates 112, and the base plate 113. The connection between the long side plates 111 and the short side plates 112 is formed by corner posts 114, and the long side plates 111 and the short side plates 112 are respectively engaged with the base plate 113. Preferably, the long side plates 111, the short side plates 112, and the base plate 113 can be engaged using locking blocks and slots. The support frame of the present invention has structural strength and can support the weight of the filler and plants, eliminating the need for additional baffles or retaining walls.

[0049] More preferably, such as Figure 7 and Figure 8As shown, water distribution unit plates 115 are provided on the long side plate 111 and the short side plate 112, and the water distribution units on the side plates are formed on the water distribution unit plates 115. Installation positions for the water distribution unit plates 115 are reserved on the long side plate 111 and the short side plate 112, and locking blocks 116 are provided around the perimeter of the installation positions. The water distribution unit plates 115 are provided with locking holes 117. The water distribution unit plates 115 are installed into the installation positions so that their locking holes 117 engage with the locking blocks 116.

[0050] More preferably, a first locking member 15 is provided at the top corner of the support frame 11, and a first locking groove is provided at the bottom of the base plate of the support frame 11, corresponding to the first locking member 15. The first locking groove of one support frame 11 can be fixed to the first locking member 15 of the other support frame 11 so that the two support frames 11 are interlocked. This forms a prefabricated wetland device that can be stacked vertically, such as... Figure 5 As shown. Preferably, multiple wetland unit modules can also be arranged horizontally side by side to form a stepped wetland system, such as... Figure 6 As shown.

[0051] More preferably, a second slot is provided at the top of the two long side plates of the support frame 11, and a second locking member corresponding to the second slot is provided at the bottom of the water distribution trough 14. This allows the water distribution trough 14 to be connected to the second locking member through the second slot. The water distribution trough allows the prefabricated wetland device of the present invention to form an upward or downward water flow channel corresponding to the upward or downward vertical subsurface flow.

[0052] Preferably, lifting holes 17 are provided on the two long side plates of the support frame 11, and a channel 18 is formed on the bottom plate of the support frame 11 at the position corresponding to the lifting holes 17. The channel 18 can be a lifting channel or a forklift channel, and the channel 18 is connected to the lifting holes 17 on both sides. The setting of the lifting channel facilitates the placement of lifting machinery pallets or forklift forks, and allows for lifting through the lifting holes, which facilitates installation and subsequent maintenance.

[0053] Preferably, the system also includes a plant unit 2, which is planted within the filler unit 12 of the wetland unit module 1 located above. The wetland plant unit is one or a combination of plants such as pickerelweed, iris, yellow iris, rush, ribbon grass, and water onion; the overall characteristics of the plants are that they are low-growing, highly resistant, and easy to cultivate. Preferably, the filler unit is one or a combination of materials such as clay ceramsite, recycled ceramsite, resin, polyurethane granules, oyster shells, plastics, and zeolite; the overall characteristics of the filler are that it is lightweight, with an average bulk density of 0.1-2.0 kg / m³. 3 .

[0054] Preferably, the support frame material is one or a combination of PP, ABS, HDPE, and steel wire.

[0055] In the prefabricated wetland device of the present invention, the side plates and bottom plates of the wetland unit modules can be assembled by using slots and plugs to facilitate the rapid installation of the wetland unit modules and make construction easier.

[0056] Example 3

[0057] This embodiment also provides a wetland system, including the prefabricated wetland device described in Embodiment 1 or Embodiment 2, and further including a water inlet device and a water outlet device. Preferably, the water inlet device includes a water inlet pipe or a water inlet overflow trough. The water outlet device includes a water outlet pipe or a water outlet overflow trough.

[0058] Preferably, the water inlet device is connected to the water distribution unit on one side of the short side plate of the wetland unit module 1 of the prefabricated wetland device, and the water outlet device is connected to the water distribution unit on the other short side plate; thus forming a horizontal subsurface flow wetland system. By utilizing the porous filler and porous structure of the wetland device, free infiltration in multiple directions is achieved, and a horizontal subsurface flow water distribution system is formed through the water outlet pipe connected to the water distribution unit on the other short side plate or the water outlet overflow trough located at the end. Water distribution units in other directions can be blocked by baffles.

[0059] The prefabricated wetland device of this embodiment can be placed in a matching pool or a traditional pool. It can be used in conjunction with the matching pool as the main wetland treatment unit, or it can be used in conjunction with a traditional wetland pool to achieve rapid renovation of existing projects. Furthermore, the inner wall and bottom of the matching pool or traditional pool located outside the wetland unit module of the prefabricated wetland device are provided with a seepage-proof structure, which includes one or a combination of concrete, clay, geomembrane, HDPE geomembrane, bentonite, or waterproof blanket.

[0060] Example 4

[0061] This embodiment 4 provides another preferred embodiment of the wetland system, including the prefabricated wetland device described in embodiment 1 or embodiment 2, and further including a water inlet device and a water outlet device. Preferably, the water inlet device includes a water inlet pipe or a water inlet overflow trough. Preferably, the water outlet device includes a water outlet pipe or a water outlet overflow trough. Preferably, the water inlet device is connected to the water distribution trough 14 of the wetland unit module 1 of the prefabricated wetland device, and the water outlet device is connected to the water distribution unit on the bottom plate of the wetland unit module 1, forming a downward vertical subsurface flow wetland system. Through the overflow weir of the top water distribution trough, water flows through the prefabricated wetland device composed of porous materials and porous structures, achieving free infiltration in multiple directions. Finally, it overflows through the bottom, and the water outlet pipe and the water outlet overflow weir at the end form a downward vertical subsurface flow water distribution system. The water distribution units in other directions can be blocked by baffles.

[0062] The prefabricated wetland device of this embodiment can be placed in a matching pool or a traditional pool. It can be used in conjunction with the matching pool as the main wetland treatment unit, or it can be used in conjunction with a traditional wetland pool to achieve rapid renovation of existing projects. Furthermore, the inner wall and bottom of the matching pool or traditional pool located outside the wetland unit module of the prefabricated wetland device are provided with a seepage-proof structure, which includes one or a combination of concrete, clay, geomembrane, HDPE geomembrane, bentonite, or waterproof blanket.

[0063] The wetland system of the present invention has the advantages of simple structure, easy assembly, diverse process coupling, convenient construction, high load operation, simple maintenance when blocked, and adjustable water flow direction.

[0064] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0065] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A modular wetland apparatus, characterized by, The wetland unit module (1) comprises a support frame (11) and a filler unit (12) in the support frame (11), water distribution units are formed on the four side plates and the bottom plate of the support frame (11), and a water distribution assembly is formed on the top of the support frame (11), so that the wetland unit module (1) forms a plurality of mode water flow channels corresponding to upward vertical subsurface flow, downward vertical subsurface flow or horizontal subsurface flow. A plurality of wall holes (13) are formed on the water distribution unit, and the plurality of wall holes (13) form a multi-row and multi-column arrangement structure on each water distribution unit. The wetland unit module further comprises a baffle for shielding the water distribution unit, and the baffle is detachably mounted to the inner side of the side plate of the support frame to form different subsurface flow modes.

2. The assembled wetland device of claim 1, wherein, First clamping members (15) are arranged at the top corners of the support frame (11), and first clamping grooves are arranged at the bottom of the bottom plate of the support frame (11) and correspond to the first clamping members (15), wherein the first clamping groove of one support frame (11) can be fixed to the first clamping member (15) of another support frame (11) to form clamping of the two support frames (11).

3. The assembled wetland device of claim 1, wherein, The water distribution assembly is a water distribution tank (14), second clamping members (16) are arranged at the top of the two long side plates of the support frame (11), second clamping grooves corresponding to the second clamping members (16) are arranged at the bottom of the water distribution tank (14), or second clamping grooves are arranged at the top of the two long side plates of the support frame (11), and second clamping members corresponding to the second clamping grooves are arranged at the bottom of the water distribution tank (14), so that the water distribution tank (14) is connected by the second clamping grooves and the second clamping members.

4. The assembled wetland device of claim 1, wherein, Hoisting holes (17) are arranged on the two long side plates of the support frame (11), and passages (18) are formed on the bottom plate of the support frame (11) and correspond to the hoisting holes (17), and the passages (18) are connected with the hoisting holes (17) on both sides.

5. The assembled wetland device according to any one of claims 1 to 4, wherein, The support frame (11) is an integral structure, and the water distribution unit and the support frame (11) are formed as an integral structure.

6. The assembled wetland device according to any one of claims 1 to 4, wherein, The support frame (11) is formed by splicing long side plates (111), short side plates (112) and a bottom plate (113), wherein the long side plates (111) and the short side plates (112) are spliced by corner columns (114) at the connection positions, and the long side plates (111) and the short side plates (112) are clamped with the bottom plate (113).

7. The assembled wetland device of claim 6, wherein, The long side plates (111) and the short side plates (112) are provided with water distribution unit plates (115), and the water distribution units on the side plates are formed on the water distribution unit plates (115). Reserving installation positions for installing water distribution unit plates (115) on the long side plates (111) and the short side plates (112) respectively, clamping blocks (116) are arranged along the periphery of the installation positions, and clamping holes (117) are correspondingly arranged on the water distribution unit plates (115), the water distribution unit plates (115) are installed to the installation positions and make the clamping holes (117) form clamping with the clamping blocks (116).

8. The assembled wetland device of claim 1, wherein, The wetland unit module (1) further comprises a plant unit (2) planted in the filler unit (12) of the wetland unit module (1) located above.

9. A wetland system characterized by The prefabricated wetland device comprises the prefabricated wetland device of any one of the preceding claims 1 to 8, further comprising a water inlet device and a water outlet device, wherein the water inlet device is connected with the water distribution unit of one of the short side plates of the wetland unit module (1) of the prefabricated wetland device, and the water outlet device is connected with the water distribution unit on the other short side plate. Alternatively, the water inlet device is connected with the water distribution assembly of the wetland unit module (1) of the prefabricated wetland device, and the water outlet device is connected with the water distribution unit on the bottom plate of the wetland unit module (1). The prefabricated wetland device can be placed in a matched pool body or a traditional pool body, and a seepage-proof structure is arranged on the inner wall and the bottom of the matched pool body or the traditional pool body outside the wetland unit module of the prefabricated wetland device, and the seepage-proof structure comprises one or a combination of several of concrete, clay, a seepage-proof film, an HDPE seepage-proof film, bentonite or a waterproof blanket.

Images