River and lake filtering ecological island structure
By designing a multi-layer filtering structure and a river-lake filtering ecological island structure in aquatic planting areas, the problem that existing river islands cannot effectively purify river water is solved, and the multi-layer filtering and purification of rivers is realized, improving water quality and ecological landscape.
Patent Information
- Application Number
- CN202420841844.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-22
AI Technical Summary
The existing river island construction method lacks scientific planning and environmental protection considerations, and cannot effectively filter or purify river water, resulting in the inability to ensure the river water quality.
Design a river and lake filtering ecological island structure, including cushion area and planting area. The cushion area is composed of pebble protective layer, stone pile layer, anti-filter material layer and filter material layer. The particle size gradually decreases and plays a multi-layer filtration role; the planting area is covered with planting soil and aquatic plants, and the root system adsorbs pollutants in the water.
Through the combination of the upper and lower parts, the filtration and purification of rivers can be achieved, the self-purification capacity of water flows can be improved, the water quality can be guaranteed, the ecological landscape can be improved, the habitat for aquatic animals and the diversity of species can be increased.
Smart Images
Figure CN222647776U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of river and lake ecological management engineering, and in particular relates to a river and lake filtering ecological island structure. Background Art
[0002] In recent years, with the continuous changes in the regional ecological environment and the increasing frequency of human activities, the ecological function of river water resources has been seriously affected and has shown a significant downward trend. This not only threatens the health of the river itself, but also has a negative impact on the balance of the surrounding ecosystem. In order to effectively protect the river and restore its water ecological function, restoration work is carried out by constructing island wetlands at appropriate locations in the river.
[0003] Most of the existing river island construction methods use existing soil or sand and gravel for piling. Although this simple piling method can quickly form the prototype of an island, it often lacks scientific planning and environmental protection considerations. Some river islands are even directly filled with waste, which not only causes serious environmental pollution, but may also cause irreversible damage to the river ecosystem.
[0004] More importantly, the substructures of these simply built river islands usually do not have water purification functions. During the flow of river water, these islands cannot effectively filter or purify the water, resulting in the inability to guarantee the water quality of the river. Especially in the rainy season or when the water flow is turbulent, the silt and pollutants around the islands are easily washed into the river, further exacerbating the deterioration of water quality. Utility Model Content
[0005] In response to the problems existing in the prior art, the utility model provides a river and lake filtration ecological island structure, with the purpose of providing an ecological island structure. The upper and lower parts are combined to work together to filter rivers, solve the existing river and lake water quality problems, improve water quality, and create ecological rivers and lakes with green grass and clear water.
[0006] The utility model is achieved in this way:
[0007] A river and lake filtering ecological island structure, comprising a cushion area arranged on a river channel, and a planting area above the cushion area; the cushion area is provided with a pebble protection layer, a rockfill layer, an anti-filter material layer, and a filter material layer in sequence from the outside to the inside; the planting area comprises a planting soil layer and aquatic plants planted on the planting soil layer; the water flow of the river and lake naturally flows from upstream to downstream through the planting area and cushion area of the ecological island to purify the water quality according to the longitudinal slope of the site;
[0008] The particle size of the cushion layer gradually decreases from the pebble masonry layer, the rockfill layer, the anti-filter material layer to the filter material layer;
[0009] The slope of the pebble retaining layer is set to 1:2-1:5.
[0010] As a preferred technical solution, the pebble retaining layer includes pebbles with a particle size of 4-6 cm.
[0011] As a preferred technical solution, the cross-section of the rockfill layer is trapezoidal and is stacked using gabions.
[0012] As a preferred technical solution, the slope of the rockfill layer is set to 1:2-1:5 according to the width of the river channel.
[0013] As a preferred technical solution, the filter material layer includes quartz sand, asbestos, and perlite; the thickness of the filter material layer is not less than 100 cm.
[0014] As a preferred technical solution, the filter material layer includes sand, carbon, aluminum oxide, and fiber; the thickness of the filter material layer is not less than 200 cm.
[0015] As a preferred technical solution, the thickness of the planting soil layer is 40-60 cm.
[0016] The utility model has the following advantages and technical effects:
[0017] The utility model of river and lake filtration ecological island structure is placed in the river and lake ecological management project, and the ecological island is divided into two parts, the lower part is a pebble masonry layer, a rockfill layer, an anti-filter material layer, and a filter material layer from the outside to the inside, and the upper part is covered with planting soil to plant aquatic plants. The upper and lower parts are combined to work together to filter the river and purify the water quality. It has the following beneficial effects:
[0018] 1. Improve the self-purification capacity of water flow, ensure water quality, and form surface flow and subsurface flow wetlands. Set up in the ecological river and lake management project, let the water flow naturally flow through the structure of the ecological island according to the longitudinal slope of the site, so as to achieve the purpose of purifying water quality;
[0019] 2. Improve the ecological landscape of rivers and lakes. The upper part of the ecological island is covered with planting soil, and aquatic plants are planted on the planting soil, which can bloom in the appropriate season and increase the ornamental effect;
[0020] 3. Provide habitats for aquatic animals, increase underwater microbial colonies, and form a beneficial cycle;
[0021] 4. Aquatic plants on the ecological island provide habitats for migratory birds, increase species diversity, and form a healthy ecological community. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a top view plan view and internal structure schematic diagram of the river and lake filtration ecological island structure of the utility model;
[0023] Figure 2 This is a schematic elevation diagram of the river and lake filtration ecological island structure of the utility model;
[0024] Figure 3This is a schematic diagram of the cross-section structure of the river and lake filtration ecological island of the utility model;
[0025] Figure 4 It is a perspective schematic diagram of the structural part of the river and lake filtration ecological island of the utility model.
[0026] In the figure: 1. Aquatic plants; 2. Pebble masonry layer; 3. Rockfill layer; 4. Filter material layer; 5. Filter material layer; 6. Water flow; 7. Planting soil layer. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. 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.
[0028] like Figures 1 to 4 As shown, the utility model discloses a river and lake filtering ecological island structure, including a cushion layer area arranged on a river channel and a planting area above the cushion layer area;
[0029] The cushion layer area includes a pebble masonry layer 2, a rockfill layer 3, a filter material layer 4, and a filter material layer 5 from the outside to the inside; the planting area includes planting soil 7 and aquatic plants 1 planted on the planting soil 7; the cushion layer area and the planting area are combined up and down, and the water flow 6 of the river and lake naturally flows from upstream to downstream through the ecological island to purify the water quality according to the longitudinal slope of the site.
[0030] The particle size of the cushion layer gradually decreases and the density gradually increases from the pebble masonry layer 2, the rockfill layer 3, the anti-filter material layer 4 to the filter material layer 5, thus achieving a multi-layer filtering effect.
[0031] The pebble masonry layer 2 includes pebbles with a particle size of 4-6 cm, which play a preliminary filtering and purification role to avoid clogging of solid debris in rivers and lakes. The pebble masonry layer 2, as the outermost layer of the cushion area, also plays a beautifying role and improves the ecological landscape effect.
[0032] Preferably, the pebbles include cobblestones, quartz particles or gravel; larger pebbles are fixed with mortar or gabions to prevent the pebble retaining wall 2 from collapsing; further preferably, mortar is used for fixing, so that the pebble retaining wall 2 is more beautiful and the sightseeing effect is improved.
[0033] The slope of the pebble retaining layer 2 is 1:2-1:5, which provides a habitat for aquatic animals, increases the species diversity of rivers and lakes, and allows a healthy ecological cycle.
[0034] The cross section of the rockfill layer 3 is trapezoidal, and the structure of being narrow at the top and wide at the bottom enables the large rockfill to stabilize the base of the ecological island. When the river channel is wide, the slope of the outer slope of the rockfill layer 3 is 1:5, which is relatively gentle, and the area of the pebble masonry layer 2 increases accordingly, and the required amount of pebbles increases accordingly; when the river channel is narrow, the slope of the rockfill layer 3 is 1:2, which is relatively steep, and the area of the pebble masonry layer 2 becomes smaller, and the required amount of pebbles decreases accordingly.
[0035] Preferably, the rockfill layer 3 is stacked with gabions. The natural river channel has a longitudinal slope, and there will be a certain water flow speed to produce a scouring effect on the ecological island. The rockfill layer 3 has the functions of preventing the water flow 6 from scouring, protecting the stability of the ecological island, and filtering the water quality.
[0036] The anti-filter material layer 4 includes materials such as quartz sand, asbestos, perlite, etc. that prevent solid particles from passing through. The surface of the anti-filter material layer 4 is generally rough, and its function is mainly to block solid particles through its surface characteristics; and there are many tiny holes and protrusions on the surface of the anti-filter material layer 4, which can guide the solid particles in the sewage to deposit on its surface to form a filter layer.
[0037] Preferably, the thickness of the filter material layer 4 is not less than 100 cm, so as to ensure the filtering effect on pollutants such as garbage and algae in rivers and lakes.
[0038] The filter material layer 5 includes materials such as sand, carbon, alumina, fiber, etc., which have a porous structure and a purification and filtering function, and separates solid particles from the fluid; the filter material layer 5 mainly relies on the porous structure, and the screening effect of the filter material is high.
[0039] Preferably, the filter material layer 5 has a thickness of not less than 200 cm to ensure the filtering effect.
[0040] The planting soil layer 7 has a thickness of 40-60 cm, which is used to meet the planting needs of aquatic plants 1; the planting soil layer 7 provides a foundation for the planting of plants.
[0041] The roots of the aquatic plants 1 are distributed in the planting soil layer 7, the filter material layer 4 and the filter material layer 5. The roots distributed underwater absorb organic pollutants such as ammonia, nitrogen and phosphorus in the river and lake water flow 6, converting them into their own nutrients and growing; the main function of the pebble masonry layer 2 and the rockfill layer 3 is to stabilize the ecological island, and it is difficult for plant roots to penetrate.
[0042] Preferably, in northern my country, flowering plants such as Lythrum salicina, aquatic canna, and aquatic iris can be planted to improve the viewing effect of the ecological island; plants with strong adsorption capacity such as calamus, reed, and cattail can also be planted to improve the absorption effect of organic pollutants such as ammonia, nitrogen, and phosphorus in river and lake water flows 6. In southern my country, more types of plants can be planted, such as aquatic plants with strong adsorption capacity such as schizonepeta, water plantain, and water spinach, which bloom and have good landscape effects; at the same time, they provide places for migratory birds to inhabit, increase species diversity, and form a healthy ecological community.
[0043] Preferably, the aquatic plants 1 are perennial species, which will wither in winter and regrow in the spring of the following year to absorb organic pollutants such as ammonia, nitrogen, and phosphorus in the river and lake water flow 6, without the need for repeated planting, thereby reducing labor costs.
[0044] Working principle:
[0045] In river channel construction, the ecological island structure belongs to artificial wetlands, which can make the water flow 6 stay longer in the same area, and use the base of the ecological island for filtration to improve the self-purification capacity of rivers and lakes. The water flow 6 uses the natural longitudinal slope of rivers and lakes, and passes through the pebble masonry layer 2-rock layer 3-reflective filter layer 4-filter layer 5-reflective filter layer 4-rock layer 3-pebble masonry layer 2 from upstream to downstream, so as to filter pollutants from rivers and lakes; the upper part of the ecological island structure is covered with a planting soil layer 7, and aquatic plants 1 are planted. The roots of aquatic plants 1 absorb organic pollutants such as ammonia, nitrogen and phosphorus in the river and lake water flow 6, convert them into their own nutrients and grow. The ecological island structure realizes the dual purification function of river and lake pollutants and water bodies, and promotes the improvement of biodiversity and ecological landscape of water ecosystems such as rivers and lakes.
[0046] Eco-islands can be arranged in multiple combinations as a way to purify river and lake water and be coordinated with the surrounding landscape.
[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A river and lake filtration ecological island structure, characterized by: The invention comprises a cushion layer area arranged on a river channel, and a planting layer above the cushion layer area; the cushion layer area is provided with a pebble protection layer (2), a rockfill layer (3), an anti-filter material layer (4), and a filter material layer (5) in sequence from the outside to the inside; the planting layer includes a planting soil layer (7) and aquatic plants (1) planted on the planting soil layer (7); the water flow (6) of the river or lake naturally flows from upstream to downstream through the planting area and the cushion layer area of the ecological island according to the longitudinal slope of the site to purify the water quality; The particle size of the cushion layer gradually decreases from the pebble protection layer (2), the rockfill layer (3), the anti-filter material layer (4) to the filter material layer (5); The slope of the pebble protective masonry layer (2) is set to 1:2-1:
5.
2. The river and lake filtration ecological island structure according to claim 1, characterized in that: The pebble protective masonry layer (2) comprises pebbles with a particle size of 4-6 cm.
3. The river and lake filtration ecological island structure according to claim 1, characterized in that: The rockfill layer (3) has a trapezoidal cross section and is stacked using gabion mesh.
4. The river and lake filtration ecological island structure as claimed in claim 3, characterized in that: The slope of the rockfill layer (3) is set to 1:2-1:5 according to the width of the river channel.
5. The river and lake filtration ecological island structure according to claim 1, characterized in that: The thickness of the planting soil layer (7) is 40-60 cm.