CN210133936U - Utilize ecological concrete's annular view water purification constructed wetland system - Google Patents
Utilize ecological concrete's annular view water purification constructed wetland system Download PDFInfo
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- CN210133936U CN210133936U CN201920793858.6U CN201920793858U CN210133936U CN 210133936 U CN210133936 U CN 210133936U CN 201920793858 U CN201920793858 U CN 201920793858U CN 210133936 U CN210133936 U CN 210133936U
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Abstract
The utility model discloses an annular landscape water purification artificial wetland system utilizing ecological concrete, which comprises a water distribution system and a circular base for seepage prevention, wherein the circular base is provided with a circular water collecting tank and a multilayer annular ecological concrete wall positioned outside the water collecting tank; the annular ecological concrete walls are concentric and gradually decrease in height from outside to inside; a mixed packing layer is arranged between two adjacent annular ecological concrete walls; an impermeable layer is laid on the outer surface of the annular ecological concrete wall on the outermost layer; and a water distribution pipeline of the water distribution system is laid along the top of the annular ecological concrete wall on the outermost layer. The utility model discloses can be through the synergism of plant and packing layer many times, have to showing to the nitrogen phosphorus in the water and get rid of the effect, and have fine view effect, can also verify wetland play water quality of water.
Description
Technical Field
The utility model relates to an artificial wetland system, in particular to utilize ecological concrete's annular view water purification artificial wetland system.
Background
At present, the area of a common water area of a landscape water body is smaller, the landscape water body is mostly a closed slow-flow water body with static or poor liquidity, the water environment capacity is small, the self-purification capacity of the water body is low, and therefore the water body is easy to be polluted, and in addition, the domestic sewage, the industrial sewage and the surface runoff are injected, so that pollutants in water are increased, especially nitrogen and phosphorus nutrient elements are accumulated, the water body eutrophication is easy to cause at higher temperature, water bloom even erupts, the visual effect of the surrounding landscape is seriously influenced, the function of the landscape water body is lost, the quality of the living environment is also reduced, and the construction of urban. At present, many urban landscape water bodies have pollution problems of different degrees, and the phenomena of water body stinking and eutrophication are serious. According to data of the national environmental condition bulletin in of 2015, the surface water quality of China is generally slightly polluted, wherein the water quality of V-class and poor V-class accounts for 35.5%. The pollution area of lakes and reservoirs in China reaches 70%, the pollution load is still continuously increased, and the problem of eutrophication is becoming serious day by day.
Aiming at landscape water purification, in the prior art, the running artificial wetland treatment technology has the characteristics of high efficiency, low investment, low operation cost and low maintenance technology. At present, artificial wetland treatment systems are divided into surface flow wetland treatment systems, subsurface flow wetland treatment systems and vertical flow wetland treatment systems according to different water distribution modes of the systems or different water flow modes in the systems, and the artificial wetland treatment systems have the following defects: (1) the surface flow wetland is a rectangular structure through which sewage flows over the surface of the wetland, has a simple structure and low construction cost, but the sewage flows over the surface of the filler, so that mosquitoes and flies are easy to breed, the surrounding environment is adversely affected, and the treatment efficiency is low. The source of oxygen in the surface flow constructed wetland mainly depends on the surface diffusion of water, the transmission of plant roots and the photosynthesis of plants, and the transmission capability is very limited. (2) The oxygen supply of the subsurface flow wetland is insufficient, and the nitrification is poor. (3) The vertical flow wetland has insufficient treatment capacity on organic matters in sewage, the control is relatively complex, and the phenomenon of breeding mosquitoes and flies occurs in summer. Moreover, the traditional artificial wetland link requires less design inlet water quality, has weaker treatment capacity on domestic sewage containing high-concentration pollutants, and the wetland is too abrupt in cities and has no ornamental value.
Disclosure of Invention
The utility model provides an annular landscape water purification artificial wetland system utilizing ecological concrete for solving the technical problems in the prior art.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: an annular landscape water purification artificial wetland system utilizing ecological concrete comprises a water distribution system and a circular base for seepage prevention, wherein the base is provided with a circular water collecting tank and a plurality of layers of annular ecological concrete walls positioned outside the water collecting tank; the annular ecological concrete walls are concentric and gradually decrease in height from outside to inside; a mixed packing layer is arranged between two adjacent annular ecological concrete walls; an impermeable layer is laid on the outer surface of the annular ecological concrete wall on the outermost layer; and a water distribution pipeline of the water distribution system is laid along the top of the annular ecological concrete wall on the outermost layer.
Further, the height difference of two adjacent layers of the annular ecological concrete walls is 300-1500 mm.
Further, the annular ecological concrete wall is built by ecological concrete blocks.
Furthermore, 6-12 water distribution ports are uniformly distributed on the water distribution pipeline along the annular circumference.
Furthermore, the mixed filler layer comprises a green zeolite filler layer, a volcanic rock filler layer and a coal cinder filler layer.
Furthermore, the thicknesses of the green zeolite filler layer, the volcanic rock filler layer and the coal cinder filler layer are the same.
Furthermore, a planting soil layer is arranged on the mixed packing layer; the upper surface of the planting soil layer is approximately parallel or approximately level with the top connecting line of the annular ecological concrete walls on the two sides of the planting soil layer.
Further, the minimum thickness of the planting soil layer is 100 mm.
Furthermore, a round water pool is arranged at the upper part of the water collecting tank.
Furthermore, a fountain is arranged in the water pool and supplies water through a lifting pump arranged in the water collecting tank.
The utility model has the advantages and positive effects that:
1. the utility model discloses form notch cuttype undercurrent wetland by the degressive annular ecological concrete wall of multilayer height, plant such as reed, cattail, loosestrife can be planted on the wet ground, and these plants have fine interception effect to nitrogen phosphorus, effectively intercept the nitrogen phosphorus in the view aquatic, reduce the concentration of nitrogen phosphorus in the play water.
2. Come from pretreatment systems's water, through water distribution system pipeline, evenly flow in the utility model discloses an ecological concrete layer that mixed packing layer and annular ecological concrete wall formed because mixed packing layer and annular ecological concrete wall have the characteristics of macroporosity, makes rivers can be with the horizontal current, the vertical current, the state free flow of undercurrent or even oblique flow, fully through the packing layer of various differences.
3. Compared with common concrete, the annular ecological concrete wall has the advantages of large porosity, good water permeability, convenience for microbial biofilm formation, capability of adsorbing pollutants such as nitrogen and phosphorus, low alkalinity and the like besides the supporting function, and is suitable for a water purification system.
4. The ecological concrete, the green zeolite, the volcanic rock and the coal cinder surface layer are easy to form and grow a biological membrane, can be used as a biological carrier, and the bacteria on the surface of the biological membrane and the plants on the surface of the stepped wetland act synergistically to intercept nitrogen and phosphorus in a water body. Besides, the green zeolite has a good ammonia nitrogen interception effect, the volcanic rock and the coal cinder have high phosphorus removal efficiency, and the ecological concrete has a certain removal effect on the volcanic rock and the coal cinder.
5. The pretreatment system not only removes suspended substances in the water body, prevents the mixed packing layer from being blocked, but also effectively slows down the flow velocity of the water body, and ensures the purification effect of the water purification treatment system in the rainfall or river flood season.
6. The water collecting tank not only has the water storage effect, but also enables suspended substances in the water body to continue to settle after the suspended substances are removed by the stepped wetland.
7. The ornamental system adopts fountain, ornamental plants, fishes and the like, has good landscape effect by matching with surrounding wetland plants, and can verify the effluent quality of the wetland.
Drawings
Fig. 1 is a top view of the present invention;
fig. 2 is a cross-sectional view of the present invention.
In the figure: 1-pretreatment system, 2-water distribution system, 3-ecological concrete wall, 4-mixed packing layer, 5-planting soil layer, 6-water tank, 7-fountain, 8-lift pump, 9-water collecting tank, 10-loosestrife, 11-cattail, 12-reed, 13-river channel and 14-drainage pipe.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are listed and will be described in detail with reference to the accompanying drawings:
referring to fig. 1 to 2, an annular landscape water purification artificial wetland system using ecological concrete comprises a pretreatment system 1, a water distribution system 2 communicated with the pretreatment system, and an anti-seepage circular base, wherein the base is provided with a circular water collection tank 9 and a plurality of layers of annular ecological concrete walls 3 positioned outside the water collection tank 9; the annular ecological concrete walls 3 are concentric and gradually decrease in height from outside to inside; a mixed packing layer 4 is arranged between two adjacent annular ecological concrete walls 3; an impermeable layer is paved on the outer surface of the annular ecological concrete wall 3 on the outermost layer; and the water distribution pipeline of the water distribution system 2 is laid along the top of the annular ecological concrete wall 3 at the outermost layer.
The pretreatment system 1 may employ existing technologies, such as a filter screen, etc., for removing large suspended substances from water.
The ladder-type subsurface wetland is formed by a plurality of layers of annular ecological concrete walls with gradually decreased heights, and plants such as reed, cattail, loosestrife and the like can be planted on the wetland.
The circular base can be laid the material that prevents the infiltration such as clay as the barrier layer, and is outmost 3 surfaces of annular ecological concrete wall also can be laid the material that prevents the infiltration such as clay as the barrier layer.
The annular ecological concrete wall 3 can be built by ecological concrete blocks. Or a plurality of arc-shaped plates can be made by prefabricated plates and connected.
The water distribution pipeline can be uniformly distributed with a plurality of inward water distribution ports along the annular circumference. 6-12 water distribution ports can be uniformly distributed on the water distribution pipeline along the annular circumference.
The water to be purified flows into the pretreatment system 1 through a pipeline, and the pretreatment system 1 mainly aims at removing larger suspended substances in the water and preventing the artificial filler medium from being blocked; after being treated by the facilities of the pretreatment system 1, water flows out of 6-12 water outlets at the top end of the ecological concrete wall 3 at the outermost side through annular uniform water distribution pipelines, openings are formed in the annular pipelines at certain intervals, the whole wetland is a stepped wetland, and the water distribution pipelines are arranged at the outermost side of the wetland, so that the water flows into the stepped subsurface wetland uniformly.
The mixed packing layer 4 can comprise a green zeolite packing layer, a volcanic rock packing layer and a coal cinder packing layer. The green zeolite, the volcanic rock and the coal cinder respectively have strong adsorption effects on ammonia nitrogen and phosphorus, and besides, some microorganisms can be effectively attached to the surfaces of the green zeolite, the volcanic rock and the coal cinder, so that the main purpose is to effectively remove rich nutrient elements in water by the synergistic action of plants, and different groups of three fillers can meet the requirement that various water flow modes can pass through the three fillers; the green zeolite packing layer, the volcanic rock packing layer and the coal cinder packing layer can be the same in thickness. And the thickness proportion of the green zeolite packing layer, the volcanic rock packing layer and the coal cinder packing layer can also be determined according to the content of ammonia nitrogen and phosphorus in the water body.
Further, in order to adjust the residence time of water flow between each layer, the height difference of the two adjacent layers of the annular ecological concrete walls can be 300-1500 mm.
Furthermore, a planting soil layer 5 can be arranged on the mixed packing layer 4; the upper surface of the planting soil layer 5 can be approximately parallel or approximately flush with the top connecting line of the annular ecological concrete walls on the two sides of the planting soil layer. The minimum thickness of the planting soil layer 5 may be 100 mm.
The water flowing out from the outlet of the water distribution pipeline of the water distribution system 2 has two flowing modes, and flows from the surface layer of the annular ecological concrete wall 3 to the surface of the mixed packing layer 4 on the inner side of the wall and the surface layer of the plant area above the mixed packing layer 4, or vertically flows in the ecological concrete along the annular ecological concrete wall 3 by infiltration. The water flow flowing to the surface of the mixed packing layer 4 has two flow modes, one is an annular ecological concrete wall 3 flowing to the inner side, the other is downward seepage along the mixed packing layer 4 and vertically flows in the mixed packing layer 4, and by analogy, the water flow finally converges to the bottom and flows to the circular water collecting tank 9 through undercurrent. The mixed packing layer 4 can be paved with mixed packing of green zeolite, volcanic rock and coal cinder, a planting soil layer 5 can be arranged on the mixed packing layer 4, and reeds 12, cattails 11 and loosestrife 10 can be planted on the planting soil layer 5, and the plants have strong pollution resistance and strong comprehensive absorption and enrichment capacity for N, P and other nutrient elements in sewage, so that the main purpose is to remove the nutrient-rich elements in water.
After water seeping downwards from the ecological concrete is gathered to the bottom, the water can horizontally flow and sequentially pass through the mixed filler layer 4 and the annular ecological concrete wall 3 of the inner layer, and finally enters the water collecting tank 9; clay layers can be paved on the outer surfaces of the round base of the wetland and the annular ecological concrete wall 3 at the outermost side to serve as impervious layers, and the purpose is mainly to prevent the infiltration of water flow; the water treated by the stepped wetland system flows into the water collecting tank 9, and the water collecting tank 9 mainly aims at storing water; as the liquid level gradually rises, it reaches a limit and flows out along the drain pipe 14.
Further, a circular water pool 6 can be arranged at the upper part of the water collecting tank 9. A fountain 7 can be arranged in the circular water pool 6, and the fountain 7 can supply water through a lifting pump 8 arranged in the water collecting tank 9.
The lift pump 8 in the water collecting tank 9 supplies the purified water to the water pool 6 through the fountain 7, and some fishes and ornamental plants are cultured in the water pool 6, so that the water quality after wetland treatment can be verified, and a good ornamental effect is achieved.
The utility model discloses can divide into three system:
(1) a water purification system: mainly comprises a pretreatment system 1, herbaceous plants planted on the surface layer of the wetland, a plurality of layers of annular ecological concrete walls 3, and mixed filler layers 4 between the plurality of layers of annular ecological concrete walls 3 and between a water pool 6 and the ecological concrete walls 3.
(2) Water distribution system 2: comprises pipelines and equipment such as a water collecting pipeline, a uniform water distribution pipeline, a central water lifting pipeline, a sewage lifting pump and the like.
(3) The viewing system comprises: comprises a fountain 7, a pond, ornamental aquatic plants and the like.
The following is a preferred embodiment of the invention and its working principle:
a system for purifying artificial wetland by utilizing annular landscape water of ecological concrete is characterized in that a round base is arranged beside a section of small landscape river channel 13 in a city, clay is laid on the base to prevent seepage of a water body, and a round water collecting tank 9 and a plurality of layers of annular ecological concrete walls 3 positioned outside the round water collecting tank 9 are arranged on the round base; the multilayer annular ecological concrete wall 3 is concentric and gradually decreases in height from outside to inside; a mixed packing layer 4 is arranged between two adjacent annular ecological concrete walls 3; a clay impermeable layer is laid on the outer surface of the annular ecological concrete wall 3 on the outermost layer; and the water distribution pipeline of the water distribution system 2 is laid along the top of the annular ecological concrete wall 3 at the outermost layer.
The ecological concrete wall 3 has a thickness of 30cm and heights of 3m, 2.7m, 2.4m and 0.9m respectively. The upper part of the packing layer is a planting soil layer 5, the planting soil layer 5 is a slope with a high outer part and a low inner part, the thickness is 40cm-10cm, the paving distance of plants on the wetland is 10 cm/plant, the thicknesses of three packing layers of green zeolite, volcanic rock and coal cinder in each annular area are the same, and the thicknesses of each packing layer in the three areas are respectively about 86cm, 76cm and 66 cm.
The pipe diameter of the water inlet pipeline in the water distribution system 2 is 15-20cm, the pipe diameter of the annular water distribution pipeline is 10cm, and water distribution ports are arranged at 45-degree intervals.
The diameter of the water pool 6 above the circular water collecting tank 9 is about 4m, and the depth is about 1.2 m. The pipe diameter of the pipeline of the fountain 7 is 5-10cm, the water collecting tank 9 is provided with a drain pipe 14 communicated with a landscape river 13, the pipe diameter of the drain pipe 14 is 15-20cm, and the height limit of an input port of the drain pipe 14 is about 50 cm.
River water enters the pretreatment system 1 through a pipeline after passing through the grating, primary interception is carried out on suspended substances in the water, the flow velocity of the water body is effectively slowed down, and the purification effect of the stepped wetland purification treatment system is ensured.
When the water level of the pretreatment system 1 reaches a certain height, the water flows uniformly from the periphery through a pipeline of the annular water distribution system 2 and flows into the stepped wetland in sequence, landscape water flows into the stepped wetland system through runoff and osmosis, under the synergistic action of aquatic plants such as reed 12, cattail 11, loosestrife 10 and the like and the mixed filler layer 4 of ecological concrete, green zeolite, volcanic rock and coal slag, the eutrophic elements such as N, P in the water are effectively removed, wherein the ecological concrete wall 3 can be formed by ecological concrete blocks with the length of 30cm, the width of 20cm and the height of 20cm, the particle size of the fillers of the green zeolite, the volcanic rock and the coal slag in the mixed filler layer 4 is 2-3cm, the pores in the ecological concrete and the surfaces of the green zeolite, the volcanic rock and the coal slag are attached with microorganism filler layers, the ecological concrete and the mixed filler layer 4 have the main effects of removing phosphorus in the water and converting ammonia nitrogen in the water into salt substances for plant growth, the bottom anaerobic zone is primarily to convert nitrate to nitrogen gas to remove nitrogen from the water.
After being treated by the annular stepped wetland system, the water body flows into the water collecting tank 9 through the innermost ecological concrete wall 3, the water flow speed is slowed down, and the suspended substances remained in the water body are removed by the annular stepped wetland system and continue to settle.
When the water level of the water collecting tank 9 is lower than that of the lifting pump 8, the lifting pump 8 lifts the water in the water collecting tank 9, the water enters the central circular water tank 6 through the fountain 7, ornamental plants such as lotus flowers are planted in the water tank 6, and ornamental fishes are cultured.
When the water level of the water collecting tank 9 reaches a certain height, water flows into river water through the water discharge pipe 14, and the water resource is recycled. The utility model relates to an utilize ecological concrete's annular view water purification constructed wetland system can be through the synergism of plant and packing layer many times, has to show the effect of getting rid of to nitrogen phosphorus in the water, and its pretreatment systems 1 has increased water conservancy dwell time, guarantees to carry out abundant biological reaction between each is handled, and this wetland system not only gains in aspects such as redox and microbial degradation and is showing the effect, gains great progress in the aspect of vwatching moreover. Compared with the water quality condition of the original view river channel 13, the nitrogen and phosphorus interception removal rate of the annular wetland system can be improved by more than 15%.
The above-mentioned embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, the scope of the present invention should not be limited by the embodiment, that is, all equivalent changes or modifications made by the spirit of the present invention should still fall within the scope of the present invention.
Claims (10)
1. An annular landscape water purification artificial wetland system utilizing ecological concrete comprises a water distribution system and is characterized by also comprising a circular base for seepage prevention, wherein the base is provided with a circular water collecting tank and a multilayer annular ecological concrete wall positioned outside the water collecting tank; the annular ecological concrete walls are concentric and gradually decrease in height from outside to inside; a mixed packing layer is arranged between two adjacent annular ecological concrete walls; an impermeable layer is laid on the outer surface of the annular ecological concrete wall on the outermost layer; and a water distribution pipeline of the water distribution system is laid along the top of the annular ecological concrete wall on the outermost layer.
2. The annular landscape water purification artificial wetland system using ecological concrete according to claim 1, wherein the height difference between two adjacent annular ecological concrete walls is 300-1500 mm.
3. The annular landscape water purification artificial wetland system using ecological concrete according to claim 1, wherein the annular ecological concrete wall is built by ecological concrete blocks.
4. The annular landscape water purification artificial wetland system utilizing ecological concrete according to claim 1, wherein 6-12 water distribution ports are uniformly distributed in the annular circumference direction of the water distribution pipeline.
5. The annular landscape water purification artificial wetland system using ecological concrete according to claim 1, wherein the mixed packing layer comprises a green zeolite packing layer, a volcanic packing layer and a coal cinder packing layer.
6. The annular landscape water purification artificial wetland system using ecological concrete according to claim 5, wherein the green zeolite packing layer, the volcanic packing layer and the cinder packing layer have the same thickness.
7. The annular landscape water purification artificial wetland system utilizing ecological concrete according to claim 1, wherein a planting soil layer is arranged on the mixed filler layer; the upper surface of the planting soil layer is approximately parallel or approximately level with the top connecting line of the annular ecological concrete walls on the two sides of the planting soil layer.
8. The annular landscape water purification artificial wetland system using ecological concrete according to claim 7, wherein the minimum thickness of the planting soil layer is 100 mm.
9. The annular landscape water purification artificial wetland system using ecological concrete according to claim 1, wherein a circular water tank is provided at the upper part of the water collection tank.
10. The annular landscape water purification artificial wetland system using ecological concrete according to claim 9, wherein a fountain is provided in the water tank, and the fountain is supplied with water by a lift pump provided in the water collection tank.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110127851A (en) * | 2019-05-29 | 2019-08-16 | 天津大学 | A kind of annular landscape Water warfare artificial wet land system using eco-concrete |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110127851A (en) * | 2019-05-29 | 2019-08-16 | 天津大学 | A kind of annular landscape Water warfare artificial wet land system using eco-concrete |
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