Floating island type constructed wetland for improving water quality

Abstract

The utility model relates to a floating island type constructed wetland for improving water quality, which comprises a constructed wetland and a floating island component used on the constructed wetland, the floating island component comprises an emergent aquatic plant planting layer, an adsorption layer and a buoyancy component, the emergent aquatic plant planting layer comprises a first layer frame, a soil layer is arranged in the first layer frame, a connecting rod is arranged at the bottom of the first layer frame, and the buoyancy component is arranged on the first layer frame. The bottom end of the connecting rod is connected with the top of the adsorption layer; the adsorption layer comprises a filter plate, and an adsorbent is arranged on the filter plate; the buoyancy assembly comprises an inclined rod, one end of the inclined rod is connected to the connecting rod, and a buoyancy plate is arranged at the other end of the inclined rod. The emergent aquatic plant planting layer and the adsorption layer are arranged below the water surface through the buoyancy assembly, the roots of emergent aquatic plants are located below the water surface, stems and leaves naturally grow to the position above the water surface, waste caused by the fact that a large number of filler modules and planting layers are laid is avoided, the planting procedure of the emergent aquatic plants in a deep water area is simplified, and the planting cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a floating island type artificial wetland for improving water quality. Background Art

[0002] Artificial wetlands are swamp-like surfaces that are artificially constructed and controlled. Sewage and sludge are distributed in a controlled manner on the artificially constructed wetlands. In the process of sewage and sludge flowing in a certain direction, the technology mainly utilizes the physical, chemical and biological synergistic effects of soil, artificial media, plants and microorganisms to treat sewage and sludge.

[0003] The utility model patent with the authorization announcement number CN210030347U discloses an artificial wetland structure for sewage treatment, including a pool body made of concrete, a primary filter pool connected to one side of the pool body, a primary filter screen laid on the inner wall of the primary filter pool, a water inlet pipe installed in the primary filter pool, a water collecting pipe laid on the other side of the pool body, a plurality of filler modules laid in the pool body, a planting layer laid above the filler modules, and wetland plants planted on the planting layer; the filler module includes a slow-release plate layer, a fine sand layer, a modified zeolite layer, a fine sand layer, a nanocomposite material layer, an activated carbon adsorption layer and a slow-release plate layer, and the slow-release plate layer includes two slow-release plates, the slow-release plates are provided with flow holes, and the two slow-release plate layers are coated with gravel layers and bluestone layers. The utility model can quickly realize installation through a modular filler structure, improve construction efficiency and save labor costs, and can partially replace modular fillers, which is convenient to replace, can enhance the efficiency of nitrogen removal and phosphorus removal, and reduce the workload of later maintenance of the sewage treatment system.

[0004] However, the above-mentioned artificial wetland structures for sewage treatment are usually set up in places with shallow water levels such as the edges of lakes and rivers. When in deep water areas, especially in the center of lakes and rivers, due to the deep water level, the filler module cannot cover the entire deep water area and the planting layer cannot be laid near the water surface, resulting in the stems and leaves of the plants being unable to emerge from the water surface, which in turn complicates the planting process of emergent plants and increases the planting cost. Utility Model Content

[0005] The purpose of the utility model is to provide a floating island artificial wetland for improving water quality, so as to solve the technical problem that when the prior art proposed in the above background technology is set in a deep water area, the filling module cannot cover the entire deep water area, and the planting layer cannot be laid near the water surface, resulting in complicated planting procedures for emergent plants and increased planting costs.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A floating island type artificial wetland for improving water quality, comprising an artificial wetland and a floating island assembly used in the artificial wetland, wherein the floating island assembly comprises an emergent plant planting layer, an adsorption layer and a buoyancy assembly, wherein the emergent plant planting layer comprises a first frame, wherein a soil layer is arranged in the first frame, and a connecting rod is arranged at the bottom of the first frame, wherein the bottom end of the connecting rod is connected to the top of the adsorption layer;

[0008] The adsorption layer comprises a filter plate, and an adsorbent is arranged on the filter plate;

[0009] The buoyancy assembly comprises an inclined rod, one end of which is connected to the connecting rod, and the other end of which is provided with a buoyancy plate.

[0010] As a preferred solution, a first clamping plate is provided on the top of the first layer frame, and a first protective net structure is provided between the first layer frame and the first clamping plate.

[0011] As a preferred solution, a submerged plant planting layer is provided in the middle of the connecting rod, and the submerged plant planting layer includes a second frame.

[0012] As a preferred solution, a second clamping plate is provided on the top of the second layer frame, and a second protective net structure is provided between the second layer frame and the second clamping plate.

[0013] As a preferred solution, an elastic rope is provided on the diagonal rod, and a fixing piece is provided at the bottom end of the elastic rope.

[0014] It can be seen from the technical solution provided by the utility model that the floating island type artificial wetland for improving water quality provided by the utility model has the following beneficial effects compared with the prior art:

[0015] 1. By using buoyancy components to place the emergent plant planting layer and adsorption layer below the water surface, the roots of the emergent plants are located below the water surface, while the stems and leaves grow naturally above the water surface, thus avoiding the waste caused by laying a large number of filler modules and planting layers, simplifying the planting process of emergent plants in deep water areas, and reducing planting costs;

[0016] 2. Impurities are adsorbed and removed through the adsorption layer to purify the water quality; by planting emergent plants and submerged plants together, the planting species of wetland plants are increased, and their interactions are utilized to give full play to the respective advantages of different plants, so as to achieve better sewage purification while ensuring that the wetland can bring certain economic benefits and ecological aesthetic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the working of a floating island artificial wetland for improving low-pollution water quality provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the overall structure of a floating island artificial wetland for improving low-pollution water quality provided by an embodiment of the utility model;

[0019] Figure 3 A schematic cross-sectional view of the overall structure of a floating island artificial wetland for improving low-pollution water quality provided in an embodiment of the utility model.

[0020] In the figure: 1. emergent plant planting layer; 11. first frame; 12. connecting rod; 13. first clamp; 14. first protective net structure; 2. adsorption layer; 21. filter plate; 22. adsorbent; 3. buoyancy assembly; 31. inclined rod; 32. buoyancy plate; 33. elastic rope; 4. submerged plant planting layer; 41. second frame; 42. second clamp; 43. second protective net structure; 5. fixing parts; 6. artificial wetland; 7. water surface; 8. riverbed mud layer. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] See also Figures 1 to 3 The embodiment of the present application provides a floating island type artificial wetland for improving water quality, including an artificial wetland 6 and a floating island assembly used on the artificial wetland 6, the floating island assembly including an emergent plant planting layer 1, an adsorption layer 2 and a buoyancy assembly 3, the emergent plant planting layer 1 includes a first layer frame 11, a soil layer is provided in the first layer frame 11, a connecting rod 12 is provided at the bottom of the first layer frame 11, and the bottom end of the connecting rod 12 is connected to the top of the adsorption layer 2; the adsorption layer 2 includes a filter plate 21, and an adsorbent 22 is provided on the filter plate 21; the buoyancy assembly 3 includes an inclined rod 31, one end of the inclined rod 31 is connected to the connecting rod 12, and the other end of the inclined rod 31 is provided with a buoyancy plate 32.

[0027] Furthermore, the buoyancy board 32 can be made of foam plastic, polyethylene, polyurethane, PVC and other materials. Foam plastic is one of the most common materials for buoyancy boards. Due to its light weight, low price, moisture resistance and other characteristics, it is widely used in the materials of water equipment such as surfboards, swimming floats, and rowing boats; polyethylene is a common plastic material. Due to its light weight, high strength, and corrosion resistance, it is widely used in ships, floating docks, pontoon bridges and other fields; polyurethane is a polymer material with a large density and very good strength and rigidity. It is widely used in buoys, buoyant balls and other fields; PVC is a plastic material, which is often used to make inflatable floats and surfboards and other water equipment. It is light and easy to carry.

[0028] Furthermore, the adsorbent 22 is also called an absorbent, which can make active ingredients adhere to the surface of its particles, thereby adsorbing impurities in water. The adsorbent 22 can be activated carbon, which is a commonly used adsorbent 22, has a large specific surface area and a suitable pore structure, and can effectively adsorb certain components from gas or liquid. Activated carbon is mainly used for water treatment, decolorization and gas treatment.

[0029] Furthermore, the adsorbent 22 may also be polyacrylamide, which is mainly used for domestic sewage and organic wastewater.

[0030] Working principle and effect: A soil layer is laid in the first frame 11 of the emergent plant planting layer 1, and emergent plants (such as canna, loosestrife, pickerel grass, yellow iris, Cyperus rotundus, lotus, etc.) are planted in the soil. Then, an adsorbent 22 is placed above the filter plate 21 of the adsorption layer 2, and finally the emergent plant planting layer 1 and the adsorption layer 2 are placed below the water surface in the deep water area through the buoyancy component 3.

[0031] Compared with the prior art, the emergent plant planting layer 1 and the adsorption layer 2 are placed below the water surface by using the buoyancy component 3, so that the roots of the emergent plants are located below the water surface, while the stems and leaves grow naturally above the water surface, thereby avoiding the waste caused by laying a large number of filling modules and planting layers, simplifying the planting process of emergent plants in deep water areas, and reducing the planting cost.

[0032] In one embodiment, a first clamping plate 13 is provided on the top of the first frame 11, and a first protective net structure 14 is provided between the first frame 11 and the first clamping plate 13. The first protective net structure is provided to protect the soil layer laid in the first frame 11, so as to prevent the soil layer from diffusing and losing due to water flow impact, thereby affecting the planting of plants; the first clamping plate 13 is provided to facilitate fixing the first protective net structure 14 on the top of the first frame 11.

[0033] Furthermore, the first clamping plate 13 can be fixed on the first frame 11 by bolts, so as to facilitate disassembly and installation.

[0034] In one embodiment, a submerged plant planting layer 4 is provided in the middle of the connecting rod 12, and the submerged plant planting layer 4 includes a second frame 41. The submerged plant planting layer 4 is provided to realize the planting of submerged plants, increase the biodiversity of the wetland system, increase the planting species of wetland plants, utilize their interaction, give full play to the respective advantages of different plants, and ensure that the wetland can bring certain economic benefits and ecological aesthetic value while achieving better sewage purification. Submerged plants can be planted with dwarf Vallisneria, goldfish algae, etc.

[0035] In one embodiment, a second clamping plate 42 is provided on the top of the second frame 41, and a second protective net structure 43 is provided between the second frame 41 and the second clamping plate 42. The second protective net structure 43 is used to protect the soil layer in the second frame 41 to prevent the soil layer from diffusing and losing due to water flow impact; the second clamping plate 42 facilitates fixing the second protective net structure 43 on the top of the second frame 41.

[0036] In one embodiment, an elastic rope 33 is provided on the inclined rod 31, and a fixing member 5 is provided at the bottom end of the elastic rope 33. After the position of the buoyancy board 32 is determined, it is fixed by the fixing member 5 to prevent the buoyancy board 32 from driving the emergent plant planting layer 1, the adsorption layer 2 and the submerged plant planting layer 4 to move due to external factors (water flow, wind force, etc.). The fixing member 5 can be a fixed anchor, which is thrown into the bottom of the water through the elastic rope 33 so that the fixed anchor is inserted into the bottom of the water to be fixed.

[0037] Furthermore, the fixing member 5 may also be a counterweight block, and the position of the buoyancy plate 32 is fixed by the gravity of the counterweight block itself.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A floating island type artificial wetland for improving water quality, comprising an artificial wetland (6) and a floating island assembly used on the artificial wetland (6), characterized in that: The floating island assembly comprises: an emergent plant planting layer (1), an adsorption layer (2) and a buoyancy assembly (3); the emergent plant planting layer (1) comprises a first frame (11); a soil layer is provided in the first frame (11); a connecting rod (12) is provided at the bottom of the first frame (11); the bottom end of the connecting rod (12) is connected to the top of the adsorption layer (2); The adsorption layer (2) comprises a filter plate (21), and an adsorbent (22) is provided on the filter plate (21); The buoyancy assembly (3) comprises an inclined rod (31), one end of the inclined rod (31) is connected to the connecting rod (12), and the other end of the inclined rod (31) is provided with a buoyancy plate (32).

2. The floating island artificial wetland for improving water quality according to claim 1, characterized in that: A first clamping plate (13) is provided on the top of the first layer frame (11), and a first protective net structure (14) is provided between the first layer frame (11) and the first clamping plate (13).

3. The floating island artificial wetland for improving water quality according to claim 1, characterized in that: A submerged plant planting layer (4) is provided in the middle of the connecting rod (12), and the submerged plant planting layer (4) includes a second frame (41).

4. The floating island artificial wetland for improving water quality according to claim 3, characterized in that: A second clamping plate (42) is provided on the top of the second layer frame (41), and a second protective net structure (43) is provided between the second layer frame (41) and the second clamping plate (42).

5. The floating island artificial wetland for improving water quality according to claim 1, characterized in that: An elastic rope (33) is provided on the inclined rod (31), and a fixing piece (5) is provided at the bottom end of the elastic rope (33).

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