Forest marsh capable of enhancing water quality purification function and construction method of forest marsh

Abstract

The invention discloses a forest marsh capable of enhancing a water quality purification function and a construction method thereof, and relates to the technical field of ecological management, the forest marsh is a water quality enhanced treatment ecological module arranged in a lake / estuary, and the forest marsh is divided into an area 1, an area 2 and an area 3. By optimizing the layout and plant configuration of the forest marsh, the forest marsh can give full play to the effects of physical filtration, plant absorption and microbial degradation, pollutants in water are effectively removed, different types of pollutants are specifically removed through the synergistic effect of the large arbors, the submerged plants and the emergent aquatic plants, the concentration of the pollutants is reduced, and the water quality is improved. According to the sewage treatment device, pollutants such as suspended solids, organic matters and nutritive salts in water are effectively removed, the water environment quality entering lakes / rivers is remarkably improved, the sewage treatment device adapts to the intermittent discharge characteristic of rural sewage, and when a large amount of water comes, the retention time of the sewage in forests and marshes is prolonged through the water retaining and overflowing design, so that the pollutants have more opportunities to be removed, and the treatment efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ecological management, in particular to a forest swamp with enhanced water purification function and a construction method thereof. Background Art

[0002] In today's society, rural domestic sewage treatment has become a key link in improving the rural living environment and building beautiful and livable villages. With the development of rural areas, the discharge of domestic sewage has gradually increased, which contains a large amount of suspended solids, organic matter, nutrients and other pollutants. If these pollutants are directly discharged without proper treatment, they will cause serious pollution to rivers, lakes and other water environments, destroy the ecological balance, and pose a potential threat to human health. Rural domestic sewage treatment is an important part of rural living environment improvement. Rural domestic sewage treatment technologies are diverse, and from the process principles, they can usually be divided into two categories: natural treatment systems and biological treatment systems. Among them, artificial wetland technology in natural treatment systems utilizes plant root absorption and microbial action, as well as multi-layer filtration, to achieve the purpose of degrading pollution and purifying water quality.

[0003] At present, artificial wetland technology is a sewage ecological treatment technology that purifies sewage through the physical, chemical and biological effects of plants, soil and microorganisms, and is widely used to treat urban tailwater. However, for rural domestic sewage around rivers and lakes, the structural layout of artificial wetland technology often cannot meet its treatment needs. Rural domestic sewage has a large coefficient of variation and is discharged intermittently. The structural layout of artificial wetland technology is difficult to cope with the fluctuation of sewage volume, and its removal effect on pollutants is not ideal, especially for nitrogen, phosphorus and other nutrients. The removal rate is low, and an ecological treatment technology that enhances the water purification function is urgently needed. Therefore, it is necessary to propose a forest swamp with enhanced water purification function and a construction method thereof to solve the problems in the existing technology. Summary of the invention

[0004] The purpose of the present invention is to make up for the shortcomings of the existing technology and provide a forest swamp with enhanced water purification function and a construction method thereof. It optimizes the layout of the forest swamp and the configuration of plants, and connects multiple mechanisms such as physical filtration, absorption by large trees and aquatic plants, and microbial degradation in series to effectively remove pollutants such as suspended solids, organic matter, and nutrients in the water, significantly improve the purification efficiency and stability of the forest swamp, and has a strong water purification ability, providing a new solution for the ecological treatment technology of domestic sewage.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a forest swamp with enhanced water purification function, which is an ecological module for water quality enhancement treatment set at the entrance to a lake / river estuary, and is divided into three areas: area 1, area 2 and area 3. Area 1 is a forest swamp ecological buffer zone, area 2 is a submerged plant absorption zone, and area 3 is an emergent plant purification zone. The incoming water flows through areas 1, 2 and 3 in sequence for water quality ecological treatment.

[0006] Furthermore, the width of the forest and marsh ecological buffer zone is 2-3m, and large water-resistant trees are planted, including Metasequoia and Baldcypress, to construct a forest and marsh ecosystem, which can intercept and adsorb pollutants in the water environment, fix sediments, and reduce the loss of suspended particles. Gravel and sand layers are set in the forest and marsh ecological buffer zone to increase the physical filtration effect.

[0007] Furthermore, the width of the submerged plant absorption zone is about 1m, and submerged plants such as black algae and goldfish algae are planted to absorb nutrients and organic pollutants in the water body. Bottom mud is added to the submerged plant absorption zone to provide sufficient nutrients for the submerged plants.

[0008] Furthermore, the width of the emergent plant purification zone is 1-2m, and emergent plants, including reeds and calamus, are planted to purify a small amount of pollutants remaining in the water environment. Some ecological floating beds are set in the emergent plant purification zone to increase the planting area of ​​emergent plants.

[0009] Furthermore, the water quality enhancement treatment ecological modules are separated by water retaining walls, with a total of 4 water retaining partitions. The thickness of the water retaining wall is 20 cm, the height of water retaining wall 1 is set to about 40 cm, and a grid is installed thereon. The heights of water retaining walls 2, 3 and 4 are set to 80 cm, 60 cm and 40 cm respectively, forming an overflow effect from high to low.

[0010] Furthermore, the region 1 is located between water retaining 1 and water retaining 2 , the region 2 is located between water retaining 2 and water retaining 3 , and the region 3 is located between water retaining 3 and water retaining 4 .

[0011] A method for constructing a forest swamp with enhanced water purification function, the method comprising the following steps: S1. Site selection: Choose to construct a forest swamp at the entrance to the lake / river mouth so that the incoming water can flow through each area in turn for water quality ecological treatment; S2. Regional division and layout: construct forest and marsh ecological buffer zones, submerged plant absorption zones and emergent plant purification zones; S3. Water retaining partition setting: 4 water retaining partitions are set between the water quality enhancement treatment ecological modules, and the water retaining thickness is about 20cm; S4. Plant maintenance and management: Regularly inspect plants, promptly discover and remove pests and diseases, fertilize and water plants in a timely manner according to their growth needs, and promptly remove and replant dead plants; S5. Monitoring and maintenance: Regularly monitor the water quality of forest swamps to understand the water purification effect, promptly identify problems and take corresponding measures, regularly clean up debris in forest swamps, keep water channels unobstructed, and check the integrity of water retaining barriers and grids.

[0012] Furthermore, the construction method also includes: S6. Add microbial preparations: Add microbial preparations to forest swamps every six months. Select microbial strains suitable for aquatic environments, including nitrifying bacteria and denitrifying bacteria. Microbial preparations promote the growth and reproduction of microorganisms and enhance their ability to degrade organic matter and nutrients. S7. Optimize plant configuration: Adjust plant configuration in a timely manner according to different seasons and water quality changes, including increasing the number of emergent plants in summer and reducing the planting density of submerged plants in winter.

[0013] Furthermore, the specific steps of S2, area division and layout, include: S201. Construction of forest and marsh ecological buffer zone: level the land with a width of 2-3m, plant large water-resistant trees such as Chinese cypress and Baldcypress, build a forest and marsh ecosystem, and lay some gravel and sand layers in the area to increase the physical filtering effect; S202, construction of submerged plant absorption area: the width of the submerged plant absorption area is set to about 1m, the bottom mud is laid in the area to provide sufficient nutrients for the submerged plants, and submerged plants such as black algae and goldfish algae are planted; S203. Construction of emergent plant purification area: Set the width of the emergent plant purification area to 1-2m, set up ecological floating beds in the area, increase the planting area of ​​emergent plants, and plant emergent plants such as reeds and calamus.

[0014] Furthermore, in the S3 water retaining partition setting, the height of water retaining 1 is set to about 40 cm, and a grid is installed thereon, and the heights of water retaining 2, water retaining 3, and water retaining 4 are set to 80 cm, 60 cm, and 40 cm respectively, forming an overflow effect from high to low, allowing the water to flow slowly between different areas.

[0015] Compared with the prior art, the forest swamp with enhanced water purification function and the construction method thereof have the following beneficial effects: The present invention optimizes the layout and plant configuration of forest swamps so that the forest swamps can give full play to the effects of physical filtration, plant absorption and microbial degradation, effectively remove pollutants in the water, and large trees, submerged plants and emergent plants work synergistically to remove different types of pollutants in a targeted manner, reduce pollutant concentrations, effectively remove suspended solids, organic matter, nutrients and other pollutants in the water, significantly improve the environmental quality of water entering lakes / rivers, and adapt to the intermittent discharge characteristics of rural sewage. When there is more water, the water retaining and overflow design increases the retention time of sewage in the forest swamp, giving pollutants more opportunities to be removed, thereby improving treatment efficiency.

[0016] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A top view of a forest swamp that enhances water purification. Figure 2 A longitudinal section of a forest swamp with enhanced water purification capabilities; Figure 3 The present invention is a flow chart of a method for constructing a forest swamp with enhanced water purification function. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1 A forest swamp with enhanced water purification function, which is an ecological module for water quality enhancement treatment set at the entrance of a lake / river, such as Figure 1 and Figure 2As shown, it is divided into three areas, namely Area 1, Area 2 and Area 3. Area 1 is the forest and marsh ecological buffer zone, Area 2 is the submerged plant absorption zone, and Area 3 is the emergent plant purification zone. The incoming water flows through Area 1, Area 2 and Area 3 in turn for water quality ecological treatment.

[0021] The width of the forest and marsh ecological buffer zone is 2-3m, and large water-resistant trees are planted, including Metasequoia and Baldcypress. These trees have well-developed root systems, which can intercept and adsorb pollutants in the water environment, effectively fix sediments, and reduce the loss of suspended particles. At the same time, the root systems of the trees also provide a place for microorganisms to grow and live, promote the degradation of microorganisms, build a forest and marsh ecosystem, intercept and adsorb pollutants in the water environment, fix sediments, and reduce the loss of suspended particles. Gravel and sand layers are set in the forest and marsh ecological buffer zone to increase the physical filtration effect.

[0022] The width of the submerged plant absorption zone is about 1m, and submerged plants such as black algae and goldfish algae are planted. Submerged plants have developed root systems and stems and leaves, which can fully absorb nutrients such as nitrogen and phosphorus and pollutants such as organic matter in the water, effectively reducing the concentration of pollutants in the water. Submerged plants provide habitats and food sources for aquatic animals, help promote the balance and stability of aquatic ecosystems, absorb nutrients such as nitrogen and phosphorus and organic pollutants in the water, and add bottom mud to the submerged plant absorption zone to provide sufficient nutrients for the submerged plants.

[0023] The width of the emergent plant purification area is 1-2m, where emergent plants are planted, including reeds and calamus. The roots of emergent plants can absorb nutrients and pollutants in the water, and their stems and leaves can also block the water flow, increase the water residence time, and further improve the purification effect. Emergent plants can purify the small amount of pollutants retained in the water environment and make the effluent water quality reach higher standards. Some ecological floating beds are set up in the emergent plant purification area to increase the planting area of ​​emergent plants.

[0024] In the above three areas, large trees, submerged plants and emergent plants work synergistically to remove different types of pollutants in a targeted manner, reduce pollutant concentrations, and effectively remove suspended solids, organic matter, nutrients and other pollutants in the water.

[0025] like Figure 1 and Figure 2As shown, the water quality enhanced treatment ecological modules are separated by water retaining walls. A total of 4 water retaining walls are set. The thickness of the water retaining wall is 20 cm. The height of water retaining wall 1 is set to about 40 cm. Its main function is to slow down the impact of water flow on the roots of large trees and protect the growth of trees. A grid is installed on it, which can effectively block solid floating objects and prevent them from entering subsequent areas and affecting the water quality purification effect. The heights of water retaining walls 2, 3 and 4 are set to 80 cm, 60 cm and 40 cm respectively, forming an overflow effect from high to low, so that the water flow flows slowly between different areas, increasing the contact time between water and plants and microorganisms, and improving the water quality purification efficiency. Area 1 is located between water retaining walls 1 and 2, area 2 is located between water retaining walls 2 and 3, and area 3 is located between water retaining walls 3 and 4. It can adapt to the intermittent discharge characteristics of rural sewage. When there is more water, the water retaining and overflow design increases the retention time of sewage in the forest swamp, so that pollutants have more opportunities to be removed, thereby improving the treatment efficiency.

[0026] Some microbial preparations can also be added to forest swamps to promote the growth and reproduction of microorganisms, enhance the degradation ability of microorganisms, and further improve the purification effect of forest swamps. Microbial preparations should be added to forest swamps once every six months, and microbial species suitable for aquatic environments should be selected, such as nitrifying bacteria, denitrifying bacteria, etc. Microbial preparations can promote the growth and reproduction of microorganisms, enhance the degradation ability of microorganisms to organic matter and nutrients, and further improve the purification effect of forest swamps.

[0027] Through the above description of a forest swamp with enhanced water purification function, the forest swamp with enhanced water purification function can give full play to the role of various regions and components to achieve effective removal of pollutants in water and significant improvement of water quality.

[0028] Embodiment 2 The method for constructing a forest swamp with enhanced water purification function of the present invention is as follows: Figure 3 This can be achieved through the following specific steps.

[0029] S1. Site selection: Choose a location where the forest swamp system is constructed at the entrance to a lake / river. This location should have a relatively stable water source and suitable terrain conditions. Priority should be given to areas with flat terrain and gentle water flow to ensure that the incoming water can flow smoothly through various areas for water quality ecological treatment. At the same time, the impact of the surrounding environment should be considered to avoid selecting locations directly affected by pollution sources. A comprehensive environmental assessment should be conducted on the site at the entrance to the lake / river, including terrain, landform, soil type, hydrological conditions, etc. to ensure that the site has a stable water supply, gentle water flow, and is not easily affected by natural disasters such as floods. A detailed investigation of the pollution sources around the site should be conducted to avoid selecting a location near the pollution source to reduce the impact of external pollutants on the forest swamp system. Analyze the land availability of the site to ensure that there is enough space to construct various areas of the forest swamp system and consider future expansion and maintenance needs.

[0030] S2. Regional division and layout: construct forest and marsh ecological buffer zones, submerged plant absorption zones and emergent plant purification zones; S201. Construction of Linze Ecological Buffer Zone (Area 1): Use professional land leveling equipment to finely level Area 1 to ensure that the ground slope is appropriate to facilitate the uniform distribution of water flow and the planting of large trees. According to the design requirements, the width of the Linze Ecological Buffer Zone is set to 2-3m. Select large trees such as Chinese cypress and baldcypress to be planted. Select healthy, disease-free and insect-free large tree seedlings such as Chinese cypress and baldcypress. Use appropriate planting methods, such as digging pits, fertilizing, and planting, to ensure that the root system of the seedlings is intact, and the planting depth and spacing meet the requirements to improve the survival rate and growth stability of the trees. The spacing between plants and rows should be reasonably arranged according to the growth characteristics and purification needs of the trees. During the planting process, attention should be paid to protecting the root system of the trees to ensure that they can grow well. Lay a layer of gravel or sand and gravel in the Linze Ecological Buffer Zone with a thickness of about 10-20cm. The particle size of the gravel or sand and gravel should be moderate to increase the physical filtration effect and effectively intercept and adsorb suspended particles and pollutants in the water. S202. Construction of submerged plant absorption zone (area 2): Set the width of the submerged plant absorption zone to about 1m, lay an appropriate amount of bottom mud on the bottom, with a thickness of about 15-25cm. The bottom mud should have good fertility and air permeability to provide sufficient nutrients and growth environment for submerged plants. Select submerged plants such as black algae and duckweed for planting, ensuring that the coverage area reaches more than 80% of the submerged plant absorption zone. During the planting process, pay attention to controlling the planting density to avoid excessive crowding that affects the growth and purification effect of the plants. Choose the appropriate season for planting submerged plants, and use methods such as cuttings and sowing to ensure that the roots of the plants are in close contact with the bottom mud. After planting, water and maintain in time to promote the rapid growth and colonization of submerged plants; S203. Construction of emergent plant purification area (area 3): Set the width of the emergent plant purification area to 1-2m, and set up some ecological floating beds in the area. The area of ​​the ecological floating beds should account for 30%-50% of the emergent plant purification area, which can be adjusted according to actual conditions. The floating beds should have good stability and carrying capacity to ensure the growth of emergent plants. Select emergent plants such as reeds and calamus for planting to ensure that the coverage area reaches more than 70% of the emergent plant purification area. During the planting process, pay attention to reasonable layout so that emergent plants can fully play the role of blocking water flow, increasing water residence time and purifying pollutants. Select emergent plant varieties such as reeds and calamus that are suitable for local climate and water quality conditions, and adopt appropriate planting density and layout methods to give full play to the purification effect and landscape effect of emergent plants.

[0031] S3. Setting of water retaining barriers: A total of 4 water retaining barriers are set between the water quality enhancement treatment ecological modules. They can be built with bricks, concrete or other suitable materials. The thickness of the water retaining barriers is about 20cm. It is necessary to ensure that they are strong and stable and can withstand the impact of water flow. The height of water retaining barrier 1 is set to about 40cm. Use precise measuring tools to ensure that the heights of water retaining barriers 1, 2, 3 and 4 are accurately set to 40cm, 80cm, 60cm and 40cm respectively. Such height settings form an overflow effect from high to low, allowing water to flow slowly between different areas, increasing the contact time between water and plants and microorganisms, and improving water purification efficiency. A grid is installed on water retaining barrier 1 with an aperture of 1-2cm. The function of the grid is to slow down the impact of water flow on the roots of large trees and effectively block solid floating objects to prevent them from entering subsequent areas and affecting the water purification effect.

[0032] S4. Plant care and management: Inspect the plants once a week to promptly detect and remove diseased and insect-infested plants, observe the growth conditions of the plants, including leaf color and shape, and take appropriate preventive measures in a timely manner if there are any abnormalities. Fertilize once a month according to the growth needs of the plants, choose an appropriate amount of organic fertilizer or special fertilizer for aquatic plants, and evenly spread it around the roots of the plants. At the same time, water the plants in time according to weather conditions to keep the soil moist, but avoid excessive watering that causes waterlogging. Clean up dead plants in a timely manner to prevent them from affecting the purification effect of the forest swamp, and replant plants of the same variety in the cleaned location to ensure the coverage area and purification capacity of the plants.

[0033] S5. Monitoring and maintenance: Monitor the water quality of the forest swamp system once a month. The detection indicators include the concentration of suspended solids, organic matter, nitrogen, phosphorus and other pollutants, as well as pH value, dissolved oxygen and other parameters. By comparing the monitoring data, understand the water purification effect, find problems in time and take corresponding measures to adjust them. Clean up the debris in the forest swamp system once a quarter, including fallen leaves, branches, floating objects, etc. Regular cleaning of debris can keep the water flow channel unobstructed and avoid the accumulation of debris affecting the normal operation of the forest swamp system. Regularly check the integrity of water retaining barriers and grids. If damaged, repair or replace them in time. At the same time, check the stability of the ecological floating bed to ensure that it can normally support the growth of emergent plants.

[0034] S6. Add microbial preparations: Add microbial preparations to the forest swamp system once every six months. Select microbial species suitable for aquatic environments, such as nitrifying bacteria, denitrifying bacteria, etc. Microbial preparations can promote the growth and reproduction of microorganisms, enhance the ability of microorganisms to degrade organic matter and nutrients, and further improve the purification effect of the forest swamp system. Choose an appropriate time, such as spring or autumn, to promote the growth and reproduction of microorganisms. According to the scale of the forest swamp system and water quality, reasonably control the dosage of microbial preparations to avoid excessive additions that may have a negative impact on the ecosystem.

[0035] S7. Optimize plant configuration: Adjust the plant configuration in a timely manner according to different seasons and water quality changes. For example, increase the number of emergent plants in summer to enhance the removal capacity of organic matter, and reduce the planting density of submerged plants in winter to avoid excessive growth leading to water hypoxia. By optimizing plant configuration, the removal efficiency of different pollutants in the forest swamp system can be improved to adapt to the needs of water quality changes.

[0036] Through the detailed description of the above steps, we can have a clearer understanding of each step of the construction method of the forest swamp with enhanced water purification function, so as to ensure the smooth construction and effective operation of the forest swamp and realize the purification and improvement of water quality. In the actual implementation process, flexible adjustments and optimizations should be made according to the specific circumstances to achieve the best purification effect.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the same elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A forest swamp with enhanced water purification function, characterized in that: The forest swamp is an ecological module for enhanced water quality treatment set up at the entrance to the lake / river estuary. It is divided into three areas: Area 1, Area 2 and Area 3. Area 1 is the forest swamp ecological buffer zone, Area 2 is the submerged plant absorption zone, and Area 3 is the emergent plant purification zone. The incoming water flows through Area 1, Area 2 and Area 3 in turn for water quality ecological treatment.

2. A forest swamp with enhanced water purification function according to claim 1, characterized in that: The width of the forest and marsh ecological buffer zone is 2-3m. Large water-resistant trees, including Metasequoia glyptostroboides and Baldcypress, are planted to construct a forest and marsh ecosystem, which can intercept and adsorb pollutants in the water environment, fix sediments, and reduce the loss of suspended particles. Gravel and sand layers are set in the forest and marsh ecological buffer zone to increase the physical filtration effect.

3. A forest swamp with enhanced water purification function according to claim 1, characterized in that: The width of the submerged plant absorption zone is about 1m. Submerged plants such as black algae and goldfish algae are planted to absorb nutrients and organic pollutants in the water body. Bottom mud is added to the submerged plant absorption zone to provide sufficient nutrients for the submerged plants.

4. A forest swamp with enhanced water purification function according to claim 1, characterized in that: The width of the emergent plant purification zone is 1-2m, and emergent plants, including reeds and calamus, are planted to purify a small amount of pollutants remaining in the water environment. Some ecological floating beds are set in the emergent plant purification zone to increase the planting area of ​​emergent plants.

5. A forest swamp with enhanced water purification function according to claim 1, characterized in that: The water quality enhancement treatment ecological modules are separated by water retaining walls, with a total of 4 water retaining walls. The thickness of the water retaining wall is 20 cm, the height of water retaining wall 1 is set to about 40 cm, and a grid is installed thereon. The heights of water retaining walls 2, 3 and 4 are set to 80 cm, 60 cm and 40 cm respectively, forming an overflow effect from high to low.

6. A forest swamp with enhanced water purification function according to claim 5, characterized in that: The region 1 is located between water retaining 1 and water retaining 2 , the region 2 is located between water retaining 2 and water retaining 3 , and the region 3 is located between water retaining 3 and water retaining 4 .

7. A method for constructing a forest swamp with enhanced water purification function, characterized in that: The method comprises the following steps: S1. Site selection: Choose to construct a forest swamp at the entrance to the lake / river mouth so that the incoming water can flow through each area in turn for water quality ecological treatment; S2. Regional division and layout: construct forest and marsh ecological buffer zones, submerged plant absorption zones and emergent plant purification zones; S3. Water retaining partition setting: 4 water retaining partitions are set between the water quality enhancement treatment ecological modules, and the water retaining thickness is about 20cm; S4. Plant maintenance and management: Regularly inspect plants, promptly discover and remove pests and diseases, fertilize and water plants in a timely manner according to their growth needs, and promptly remove and replant dead plants; S5. Monitoring and maintenance: Regularly monitor the water quality of forest swamps to understand the water purification effect, promptly identify problems and take corresponding measures, regularly clean up debris in forest swamps, keep water channels unobstructed, and check the integrity of water retaining barriers and grids.

8. The method for constructing a forest swamp with enhanced water purification function according to claim 7, characterized in that: The construction method also includes: S6. Add microbial preparations: Add microbial preparations to forest swamps every six months. Select microbial strains suitable for aquatic environments, including nitrifying bacteria and denitrifying bacteria. Microbial preparations promote the growth and reproduction of microorganisms and enhance their ability to degrade organic matter and nutrients. S7. Optimize plant configuration: Adjust plant configuration in a timely manner according to different seasons and water quality changes, including increasing the number of emergent plants in summer and reducing the planting density of submerged plants in winter.

9. The method for constructing a forest swamp with enhanced water purification function according to claim 7, characterized in that: The specific steps of S2, area division and layout, include: S201. Construction of forest and marsh ecological buffer zone: level the land with a width of 2-3m, plant large water-resistant trees such as Chinese cypress and Baldcypress, build a forest and marsh ecosystem, and lay some gravel and sand layers in the area to increase the physical filtering effect; S202, construction of submerged plant absorption area: the width of the submerged plant absorption area is set to about 1m, the bottom mud is laid in the area to provide sufficient nutrients for the submerged plants, and submerged plants such as black algae and goldfish algae are planted; S203. Construction of emergent plant purification area: Set the width of the emergent plant purification area to 1-2m, set up ecological floating beds in the area, increase the planting area of ​​emergent plants, and plant emergent plants such as reeds and calamus.

10. The method for constructing a forest swamp with enhanced water purification function according to claim 7, characterized in that: In the S3, water retaining partition setting, the height of water retaining 1 is set to about 40 cm, and a grid is installed thereon, and the heights of water retaining 2, water retaining 3, and water retaining 4 are set to 80 cm, 60 cm, and 40 cm respectively, forming an overflow effect from high to low, allowing the water to flow slowly between different areas.

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