A multi-modal water purification system

Abstract

The application relates to the field of sewage treatment, in particular to a multi-modal water purification system. The multi-modal water purification system comprises a floating island floating in a water body, the floating island is arranged at the outlet of a sewage drain pipe, and a deep purification area and a water surface purification area are arranged on the floating island; the deep purification area is arranged on the side close to the sewage drain pipe, and emergent plants are arranged in the deep purification area, and the root systems of the emergent plants are immersed in the water body; the water surface purification area is arranged on the periphery of the deep purification area, and floating plants for reducing eutrophication of the water body are arranged in the water surface purification area; slow-release materials are arranged below the floating island and immersed in the water body; a soft enclosure is arranged outside the floating island; and the soft enclosure and the revetment are used to enclose and isolate the floating island and the sewage drain pipe in the water body to form a sewage purification area. The multi-modal water purification system improves the sewage treatment effect while meeting the ornamental requirement through the physical-biological combined treatment mode.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment, and in particular to a multimodal water purification system. Background Technology

[0002] Black and odorous water bodies not only damage the urban ecological environment, but also negatively impact the quality of life of surrounding residents. Therefore, effective black and odorous water body treatment technologies are of great significance for improving the urban environment and protecting residents' health.

[0003] Currently, common treatment technologies for black and odorous rivers cover multiple aspects. Dredging is a common method, reducing pollutant accumulation by removing silt from the riverbed; interception cuts off the source of sewage, preventing new pollutants from entering the river; water diversion introduces clean water into the river to dilute pollutant concentrations; chemical dosing removes specific pollutants by adding chemicals to the water; and equipment enhancement utilizes various mechanical devices to improve water flow and purification capacity. Aeration and reoxygenation increase dissolved oxygen in the water, promoting microbial growth and metabolism; and ecological restoration restores the river's ecological balance through planting aquatic plants and introducing aquatic animals.

[0004] However, existing river management technologies have significant shortcomings. Due to the complex conditions of black and odorous water bodies, single technologies often fail to achieve satisfactory results in addressing issues such as non-point source pollution, algae control, and pollution source interception in open waters. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, this application provides a multimodal water purification system that improves the wastewater treatment effect while meeting aesthetic requirements through a combination of physical and biological treatment methods.

[0006] This application is achieved through the following technical solution: A multimodal water purification system includes a floating island in a water body, located at the outlet of a sewage drain pipe, and comprising a deep purification zone and a water surface purification zone. The deep purification zone is located on the side closest to the sewage drain pipe and contains emergent plants with their roots submerged in the water. The water surface purification zone is located around the deep purification zone and contains floating plants for reducing eutrophication. Slow-release materials are submerged in the water beneath the floating island. A soft enclosure is provided outside the floating island. The soft enclosure, in conjunction with a revetment, encloses and isolates the floating island and the sewage drain pipe in the water to form the sewage purification zone.

[0007] By adopting the above technical solutions, the floating island, placed at the outlet of the sewage discharge pipe, can directly treat the discharged sewage. The combination of emergent and floating plants can purify water quality from different levels. Specifically, the roots of emergent plants are submerged in water and can absorb nutrients from deep water, while floating plants are placed on the water surface to absorb nutrients from the surface. In addition, the stems and leaves of emergent plants extend above the water surface, which can meet the landscape requirements of the floating island. The slow-release material under the floating island can replenish the microorganisms needed for pollution reduction in polluted water and increase the attachment space for microorganisms, thereby improving the water purification effect. Soft enclosures combined with revetment to form a sewage purification area prevent the spread of polluted water and achieve effective purification and control of sewage.

[0008] Optionally, drainage holes are evenly distributed in the deep purification area, and the drainage holes are connected at the center by a support rod to a fixing ring for planting emergent plants.

[0009] By adopting the above technical solution, the water leakage holes evenly distributed in the deep purification area of ​​the multimodal water purification system facilitate the entry of sewage discharged from the sewage drain pipe into the sewage purification area; the water leakage holes are connected to a fixing ring for planting emergent plants at the center by a support rod. The fixing ring helps to stabilize the position of the emergent plants, so that the roots of the emergent plants can stably absorb pollutants in the water, better play the role of purifying sewage, and thus improve the sewage purification effect.

[0010] Optionally, a positioning net is provided in the water meter purification area to define the position of floating plants, the roots of which are located in the mesh of the positioning net.

[0011] By adopting the above technical solution, a positioning net is set in the water surface purification area to limit the position of floating plants. The roots of the floating plants are set in the mesh of the positioning net, which can ensure that the floating plants are in contact with the water surface. Under the limitation of the positioning net, the water surface can be stably purified. In addition, the floating plants can block the sunlight that shines into the water, inhibit the growth of algae in the water, and reduce the phenomenon of eutrophication.

[0012] Optionally, the floating island is positioned below the outlet of the sewage drain pipe.

[0013] By adopting the above technical solution, the floating island can disperse the sewage discharged from the sewage pipe. The sewage then flows into the drain hole, allowing emergent plants to absorb and utilize the nutrients in the sewage, thereby effectively purifying the sewage and improving the purification efficiency of the multimodal water purification system.

[0014] Optionally, the slow-release material is placed in a filter screen, which has a columnar structure; the filter screen is fixed to the floating island and located directly below the drainage holes.

[0015] By adopting the above technical solution, the slow-release material is placed in a columnar filter screen, which is fixed on the floating island and located directly below the water leakage hole. On the one hand, the filter screen can not only protect the slow-release material, but also provide an attachment space for microorganisms in the water, thereby improving the water purification effect. On the other hand, it can ensure that the slow-release material can play a stable role in the water and purify the water.

[0016] Optionally, the slow-release material is in the form of strips and is spirally wound around a fixed column located below the floating island.

[0017] By adopting the above technical solution, the slow-release material with a strip-shaped structure is spirally wrapped around the fixed column below the floating island, which increases the contact area between the slow-release material and the water and improves the purification efficiency.

[0018] Optionally, the soft enclosure has a gravity block fixed at the bottom and a float at the top.

[0019] By adopting the above technical solution, a gravity block is fixed at the bottom of the soft enclosure and a float is provided at the top. This ensures that the soft enclosure can effectively isolate pollution sources regardless of water level changes. It can ecologically isolate non-point source pollution carried by ecological water replenishment, sewage pipe network seepage, and surface runoff from the main water body, reduce the diffusion of pollutants into the water body, and achieve the purpose of rapid interception of pollution in the water body.

[0020] Optionally, fixed piles are installed in the water body, and the soft enclosure is connected to the fixed piles by flexible ropes.

[0021] By adopting the above technical solution, the fixed piles can stably set up the soft enclosure in the water body. The soft enclosure is connected to the fixed piles by flexible ropes, which enables the soft enclosure to adapt to changes in water level, enhances the enclosure and isolation effect of the soft enclosure on the sewage purification area, better prevents the spread of pollutants, and improves the stability and interception efficiency of the entire multimodal water purification system.

[0022] Optionally, the slow-release materials include immobilized carbon particles and composite microbial remediation particles.

[0023] By adopting the above technical solutions, the slow-release materials include immobilized carbon particles and composite microbial remediation particles, which can meet the problems that often occur in conventional surface polluted water bodies, such as insufficient number of microorganisms, imbalance of carbon-nitrogen ratio in water bodies, and difficulty for local microorganisms to meet complex pollution conditions. This effectively solves the problem of insufficient comprehensive pollution reduction factors in water bodies and improves the sewage treatment effect.

[0024] Optionally, a buffer zone exists between the soft enclosure and the floating island.

[0025] By adopting the above technical solutions, the buffer zone between the soft enclosure and the floating island can reduce the impact of water flow on the floating island, reduce the displacement of the floating island, and ensure that the deep purification zone, water surface purification zone and slow-release materials on the floating island can purify the polluted water body relatively stably.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. This application features emergent and floating plants on the floating island, with slow-release materials placed beneath it. This physical-biological combined wastewater purification method not only improves the efficiency of wastewater purification but also has a landscape effect. 2. In this application, the soft enclosure, together with the revetment, encloses and isolates the floating island and sewage drainage pipe to form a sewage purification area. This allows the soft enclosure to effectively isolate the pollution source even when the water level changes, reducing the diffusion of pollutants into the water body and achieving rapid interception of pollution in the water body. This can solve the problem of pollution source control and interception in open water areas. 3. In this application, the floating plants on the floating island can reduce eutrophication of the water body, and the soft enclosure can effectively intercept algae and reduce the density of algae in the water body. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the multimodal water purification system structure described in Embodiment 1; Figure 2 This is a side view of the structure of the multimodal water purification system described in Embodiment 1; Figure 3 This is a top view of the leakage hole structure described in Embodiment 1; Figure 4 This is a schematic diagram of the soft enclosure and fixed pile structure described in Embodiment 1; Figure 5 This is a schematic diagram of the multimodal water purification system structure described in Embodiment 2; Figure 6 This is a top view of the enclosure described in Embodiment 2; Figure 7 This is a cross-sectional schematic diagram of the filter structure described in Embodiment 2; Figure 8 This is a schematic diagram of the multimodal water purification system structure described in Embodiment 3.

[0028] In the diagram: 1. Floating island; 11. Enclosure; 12. Flexible rope; 2. Revetment; 21. Sewage drainage pipe; 3. Deep purification area; 31. Emergent plants; 32. Drainage hole; 33. Fixing ring; 34. Support rod; 4. Water meter purification area; 41. Floating plants; 42. Positioning net; 5. Filter screen; 51. Slow-release material; 52. Fixing column; 53. Filter pipe; 531. Water outlet; 6. Soft enclosure; 61. Float; 62. Gravity block; 7. Buffer area; 8. Fixing pile; 9. Water body; 91. Sewage purification area. Detailed Implementation

[0029] The technical solutions of various embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Example 1 Reference Figures 1-3 This application discloses a multimodal water purification system, including a floating island 1 floating in a water body 9. The floating island 1 is located at the outlet of a sewage drain pipe 21, and the floating island 1 is provided with a deep purification zone 3 and a water surface purification zone 4. The deep purification zone 3 is located on the side close to the sewage drain pipe 21, and emergent plants 31 are provided in the deep purification zone 3, with the roots of the emergent plants 31 submerged in the water body 9. The water surface purification zone 4 is arranged around the deep purification zone 3, and the water surface purification zone 4 is provided with floating plants 41 for reducing eutrophication of the water body 9. Slow-release material 51 is provided below the floating island 1 and submerged in the water body 9. A soft enclosure 6 is provided outside the floating island 1. The soft enclosure 6, together with the revetment 2, encloses and isolates the floating island 1 and the sewage drain pipe 21 in the water body 9 to form a sewage purification zone 91.

[0031] Specifically, refer to Figures 1-3The floating island 1 is located below the outlet of the sewage drain pipe 21, which allows the floating island 1 to disperse the sewage discharged from the sewage drain pipe 21, so that the sewage can enter the sewage purification area 91 through the water leakage hole 32. In addition, the sewage drain pipe 21 can be shallowly buried, which can greatly reduce the construction difficulty and cost. The floating island 1 is provided with a deep purification area 3, which includes emergent plants 31, water leakage hole 32 and fixing ring 33. Emergent plants 31 can be selected from local native plants, or common varieties with strong purification capabilities such as reeds and calamus can be chosen. Their root systems are well-developed and can be well submerged in water body 9 to absorb and degrade pollutants in the water. Several drainage holes 32 are evenly distributed in the deep purification zone 3. The drainage holes 32 are constructed as holes penetrating the floating island 1 and are funnel-shaped. The drainage holes 32 are connected to a fixing ring 33 for planting emergent plants 31 at the center by a support rod 34. The drainage holes 32 can guide the sewage discharged from the sewage drain pipe 21 to fully contact the emergent plants 31, thus playing a role in guiding sewage. The fixing ring 33 can be made of polypropylene material with certain strength and corrosion resistance. The function of the fixing ring 33 is to fix the emergent plants 31, so that the roots of the emergent plants 31 can grow downward and contact the water body 9, effectively absorbing pollutants in the sewage and playing a preliminary role in purifying the sewage.

[0032] Reference Figures 1-3 The water surface purification area 4 includes floating plants 41 and a positioning net 42. The floating plants 41 can be local plants, such as water lilies or duckweed, which can float on the water surface and reduce eutrophication of the water body 9. The leaves of the floating plants 41 are usually large, covering a certain area of ​​the water surface, reducing sunlight exposure to the water body 9 and inhibiting algae growth. The positioning net 42 is made of polyethylene and is set in the water surface purification area 4. Its function is to define the position of the floating plants 41, so that the floating plants 41 can be evenly distributed in the water surface purification area 4. The roots of the floating plants 41 are set in the mesh of the positioning net 42, which ensures that the floating plants 41 are fixed in a suitable position and that the roots can fully contact the water body 9 to absorb nutrients from the water. The combination of the positioning net 42 and the floating plants 41 allows the floating plants 41 to be distributed in an orderly manner in the water surface purification area 4, so as to better perform their function. A buffer zone 7 exists between the soft enclosure 6 and the floating island 1. This buffer zone 7 provides some buffer space for the water flow, reducing the impact of the water flow on the floating island 1 and the soft enclosure 6. The floating island 1 is connected to the revetment 2 by flexible ropes 12, allowing the floating island 1 to adapt to different water levels.

[0033] Reference Figures 1-2The slow-release material 51 is a composite material composed of 10%~15% growth promoters, 35%~40% immobilized carbon sources, 15%~20% composite microbial remediation agents, and activated mineral materials. This composite material can not only meet the problems of insufficient microbial quantity, carbon-nitrogen ratio imbalance, and difficulty of native microorganisms meeting complex pollution conditions that often occur in conventional surface polluted water bodies 9, but also effectively solve the problem of insufficient comprehensive pollution reduction factors in water bodies 9. Moreover, it has strong comprehensive purification capabilities and stronger pollution removal capacity per unit volume. In addition, after the equipment or material is put into use, the purification of water body 9 can be started quickly, and the effective time is long, usually 1~2 years. The slow-release material 51 is connected to the floating island 1 through a fixed column 52. The slow-release material 51, which is in the form of strips, is spirally wound around the fixed column 52 located below the floating island 1. The amount of slow-release material 51 is controlled by controlling the number of turns of the slow-release material 51 on the fixed column 52. The slow-release material 51 is in direct contact with the water body 9, which improves the purification efficiency of the slow-release material 51 for polluted water body 9.

[0034] Reference Figure 4 The soft enclosure 6 can be made of non-permeable material or polyester fiber geotextile. Polyester fiber geotextile has good corrosion resistance and flexibility, and it can freely expand and contract according to changes in water level to ensure that the polluted area is relatively independent. The float 61 is set at the top of the soft enclosure 6, usually made of plastic, and its function is to provide buoyancy so that the soft enclosure 6 can float on the water surface. The float 61 can be replaced with rubber, etc. The bottom of the soft enclosure 6 is fixed with a gravity block 62 and the top is equipped with a float 61, which can ensure that the soft enclosure 6 can effectively isolate the pollution source when the water level changes. The water body 9 is equipped with a fixed pile 8, and the soft enclosure 6 is connected to the fixed pile 8 by a flexible rope 12. This can further enhance the stability of the soft enclosure 6 and prevent it from shaking significantly under the impact of water flow. The flexible rope 12 can be an anchor rope.

[0035] The implementation principle of this embodiment is as follows: The multimodal water purification system combines floating islands 1, soft barriers 6, and slow-release materials 51. Through the emergent plants 31 and slow-release materials 51 in the deep purification zone 3, and the floating plants 41 in the water surface purification zone 4, the sewage discharged from the sewage drain pipe 21 undergoes multi-level purification. The soft barriers 6 effectively isolate the pollution source regardless of water level changes, reducing pollution diffusion. Compared to single purification methods, this combined approach can treat sewage more comprehensively and efficiently, improving the water quality of water body 9.

[0036] Example 2 Reference Figures 5-7The difference between this embodiment and Embodiment 1 is that the slow-release material 51 is placed in the columnar filter screen 5, which is fixed on the floating island 1 and located directly below the drain hole 32. The sewage first passes through the drain hole 32 and comes into contact with the roots of the emergent plant 31 for initial purification. Then, the sewage enters the filter screen 5 containing the slow-release material 51, which includes immobilized carbon particles and composite microbial remediation particles. As the water flows, the slow-release material 51 slowly releases its effective components, continuously purifying the sewage. The immobilized carbon particles are made of porous materials such as activated carbon to fix the carbon source. The composite microbial remediation particles contain a variety of microorganisms that have a purifying effect on sewage and can decompose pollutants such as organic matter, nitrogen, and phosphorus in the sewage. A barrier 11 is provided between the deep purification zone 3 and the water surface purification zone 4. The barrier 11 is to ensure that the sewage discharged from the sewage drain pipe 21 can pass through the deep purification zone 3 and the slow-release material 51, thus purifying the sewage more thoroughly.

[0037] The implementation principle of this embodiment is as follows: the sewage discharged from the sewage drain pipe 21 falls onto the floating island 1, and comes into full contact with the roots of the emergent plants 31 through the water leakage hole 32, achieving initial purification. Then it enters the filter screen 5 containing slow-release material 51. As the water flows, the slow-release material 51 slowly releases its effective ingredients, further purifying the sewage. A barrier 11 is provided between the deep purification area 3 and the water surface purification area 4 to ensure that the sewage discharged from the sewage drain pipe 21 can pass through the deep purification area 3 and the slow-release material 51, further improving the water quality.

[0038] Example 3 Reference Figure 8 The difference between this embodiment and the above embodiment is that the slow-release material 51 is placed in the filter tube 53, and the filter tube 53 can be fixed in the drain hole 32 by means of threaded connection to ensure that the sewage flowing out of the drain hole 32 can fully contact the slow-release material 51 in the filter tube 53; in order to ensure that the water purified by the slow-release material 51 can be discharged smoothly, a number of water outlet holes 531 are arranged in the lower section of the filter tube 53.

[0039] The implementation principle of this embodiment is as follows: the filter tube 53 can ensure that the sewage discharged through the water leakage hole 32 comes into full contact with the slow-release material 51 before being discharged out of the tube, thereby improving the purification effect of the slow-release material 51 on the sewage.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of this application.

Claims

1. A multimodal water purification system, characterized in that, The system includes a floating island (1) floating in the water body (9), located at the outlet of the sewage drain pipe (21), and equipped with a deep purification area (3) and a water surface purification area (4); the deep purification area (3) is located on the side close to the sewage drain pipe (21), and is equipped with emergent plants (31) whose roots are submerged in the water body (9); the water surface purification area (4) is covered with... A floating plant (41) for reducing eutrophication of the water body (9) is provided in the outer perimeter of the deep purification area (3) and in the water surface purification area (4); a slow-release material (51) is provided below the floating island (1) and submerged in the water body (9); a soft enclosure (6) is provided outside the floating island (1); the soft enclosure (6) works with the revetment (2) to enclose and isolate the floating island (1) and the sewage drain pipe (21) in the water body (9) to form a sewage purification area (91).

2. The multimodal water purification system according to claim 1, characterized in that, The deep purification area (3) is evenly distributed with drainage holes (32), and the drainage holes (32) are connected to a fixing ring (33) for planting emergent plants (31) at the center by a support rod (34).

3. The multimodal water purification system according to claim 2, characterized in that, The water meter purification area (4) is provided with a positioning net (42) for defining the position of floating plants (41), and the roots of the floating plants (41) are set in the mesh of the positioning net (42).

4. The multimodal water purification system according to claim 1, characterized in that, The floating island (1) is located below the outlet of the sewage drain pipe (21).

5. A multimodal water purification system according to claim 2, characterized in that, The slow-release material (51) is placed in the filter screen (5), which has a columnar structure; the filter screen (5) is fixed on the floating island (1) and located directly below the drain hole (32).

6. The multimodal water purification system according to claim 1, characterized in that, The slow-release material (51) has a strip-shaped structure and is spirally wrapped around the fixed column (52) provided below the floating island (1).

7. The multimodal water purification system according to claim 1, characterized in that, The bottom of the soft enclosure (6) is fixed with a gravity block (62) and the top is provided with a float (61).

8. The multimodal water purification system according to claim 1, characterized in that, The water body (9) is provided with fixed piles (8), and the soft enclosure (6) is connected to the fixed piles (8) by a flexible rope (12).

9. A multimodal water purification system according to claim 1, characterized in that, The slow-release material (51) includes immobilized carbon particles and composite microbial repair particles.

10. A multimodal water purification system according to claim 1, characterized in that, There is a buffer zone (7) between the soft enclosure (6) and the floating island (1).

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