CN218709755U - Ecological purification constructed wetland system - Google Patents
Ecological purification constructed wetland system Download PDFInfo
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- CN218709755U CN218709755U CN202222823119.1U CN202222823119U CN218709755U CN 218709755 U CN218709755 U CN 218709755U CN 202222823119 U CN202222823119 U CN 202222823119U CN 218709755 U CN218709755 U CN 218709755U
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Abstract
The application provides an ecological purification artificial wetland system, wherein a water outlet of a grid well of the system is connected with a water inlet of a sedimentation tank through a drain pipe, a water outlet of the sedimentation tank is connected with a water distribution pipe of a sand filter through a drain pipe, and a water outlet of the sand filter is connected with a water distribution pipe of a soil infiltration filter through a drain pipe; the water outlet of the soil infiltration pond is connected with the water inlet of the primary oxidation pond through a water discharge pipe, the water outlet of the primary oxidation pond is connected with the water inlet of the primary horizontal subsurface flow artificial wetland through a water discharge pipe, the water outlet of the primary horizontal subsurface flow artificial wetland is connected with the water inlet of the secondary vertical subsurface flow artificial wetland through a water discharge pipe, the water outlet of the secondary vertical subsurface flow artificial wetland is connected with the water inlet of the tertiary horizontal subsurface flow artificial wetland through a water discharge pipe, and the water outlet of the tertiary horizontal subsurface flow artificial wetland is connected with the landscape pond through a water discharge pipe. The system can effectively improve the water quality of urban water and reduce the cost, energy consumption and efficiency of initial rainwater treatment.
Description
Technical Field
The application relates to the field of water environment treatment, in particular to an ecological purification artificial wetland system.
Background
Urban water pollution can be divided into point source pollution and surface source pollution in form, initial rainwater is taken as a typical surface source pollution carrier, the urban water pollution carrier has the characteristics of wide region range, strong randomness, complex cause and the like, and the control and treatment difficulty is higher. The artificial wetland treatment system is widely applied to urban non-point source pollution control due to the advantages of low energy consumption, large pollutant treatment capacity and the like, but has some problems: if a single artificial wetland has poor removal effect on certain pollutants, the treatment efficiency is low; or the constructed wetland substrate is easy to block, the operation and maintenance cost is higher, and the investment is larger.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide an ecological purification constructed wetland system to solve the problem that the treatment effect of the existing initial rainwater is poor.
The technical scheme of the application is as follows:
an ecological purification artificial wetland system comprises a grid well, a sedimentation tank, a sand filter, a soil infiltration tank, a primary oxidation pond, a primary horizontal subsurface flow artificial wetland, a secondary vertical subsurface flow artificial wetland, a tertiary horizontal subsurface flow artificial wetland and a landscape pond which are sequentially connected; the water outlet of the grid well is connected with the water inlet of the sedimentation tank through a drain pipe, the water outlet of the sedimentation tank is connected with the water distribution pipe of the sand filter through a drain pipe, and the water outlet of the sand filter is connected with the water distribution pipe of the soil infiltration filter through a drain pipe and is used for primary treatment of initial rainwater; the water outlet of the soil infiltration pond is connected with the water inlet of the primary oxidation pond through a drain pipe, the water outlet of the primary oxidation pond is connected with the water inlet of the primary horizontal subsurface flow constructed wetland through a drain pipe, the water outlet of the primary horizontal subsurface flow constructed wetland is connected with the water inlet of the secondary vertical subsurface flow constructed wetland through a drain pipe, the water outlet of the secondary vertical subsurface flow constructed wetland is connected with the water inlet of the tertiary horizontal subsurface flow constructed wetland through a drain pipe, and the water outlet of the tertiary horizontal subsurface flow constructed wetland is connected with the landscape pond through a drain pipe and used for deeply purifying initial rainwater and then discharging the initial rainwater into a downstream river channel.
As a technical scheme of the application, the set position elevations of the sedimentation tank, the sand filter, the soil infiltration tank, the primary oxidation pond, the primary horizontal subsurface flow constructed wetland, the secondary vertical subsurface flow constructed wetland, the tertiary horizontal subsurface flow constructed wetland and the landscape pond are sequentially reduced.
As a technical scheme of this application, the inlet tube department of grid well is provided with water level monitoring equipment and water quality monitoring equipment, just the grid well set up in ecological purification constructed wetland system's front end, the water inlet of grid well, delivery port all are higher than the sedimentation tank.
As a technical scheme of the application, fine sand is filled in the sand filter, and the water distribution pipe is arranged on the upper surface of the sand filter and is a PE perforated pipe; and the water outlet of the sand filter is arranged at the lower part of the sand filter.
As a technical scheme of this application, the water distributor in soil infiltration pond is located the upper surface in soil infiltration pond is for the PE perforated pipe, just filler in the soil infiltration pond is from last to being gravel layer, porous spherical plastic layer, the mixed layer of zeolite iron fillings, the mixed layer of soil limestone and coarse sand layer down in proper order, the mixed layer of zeolite iron fillings with be equipped with the aeration pipe between the mixed layer of soil limestone, just the bottom of the pool in soil infiltration pond is through seamless perforation steel pipe catchment.
As a technical scheme of the application, a water inlet and a water outlet are respectively arranged on two opposite sides of the upper part of the primary oxidation pond, and water level monitoring equipment is arranged in the primary oxidation pond.
As a technical scheme of the application, the first-stage horizontal subsurface flow constructed wetland and the third-stage horizontal subsurface flow constructed wetland are both composed of brick-concrete structures, the length of each horizontal subsurface flow constructed wetland is 15m, and the bottom gradient of each horizontal subsurface flow constructed wetland is 0.5%; the two opposite sides of the upper part of the first-stage horizontal subsurface flow artificial wetland are respectively provided with a water inlet and a water outlet, and the two opposite sides of the upper part of the third-stage horizontal subsurface flow artificial wetland are respectively provided with a water inlet and a water outlet.
As a technical scheme of the application, the secondary vertical subsurface flow constructed wetland is composed of a brick-concrete structure, the length of the secondary vertical subsurface flow constructed wetland is 15m, and the bottom of the secondary vertical subsurface flow constructed wetland is a flat slope; the upper surface of the second-stage vertical subsurface flow constructed wetland is provided with a water distribution pipe which is a PE perforated pipe; and a water outlet is formed in the bottom of the second-stage vertical subsurface flow constructed wetland.
As a technical scheme of the application, an ecological floating island is arranged at the upper part of the landscape pond and is composed of a PVC floating plate; the bottom of the landscape pond is provided with a nylon net, and the nylon net is internally provided with a porous spherical biological filler with the diameter of 30 mm.
The beneficial effect of this application:
in the ecological purification artificial wetland system, the problems of adverse effects such as insufficient water holding capacity in the artificial wetland in dry seasons, damage to the ecological structure of the wetland and the like can be solved, the problem of urban water environment can be solved, and non-point source pollution caused by initial rainwater can be reduced; meanwhile, the system can solve the problems of high cost and high energy consumption of initial rainwater treatment, and realizes low cost, low energy consumption, low investment and high efficiency of initial rainwater treatment; in addition, the method has positive effects of ensuring the water quality of the urban water body, improving the landscape effect of the urban water environment and promoting the ecological development of the urban water, accords with the concept of green development, and has great popularization and application values.
Drawings
In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic view of an ecological purification constructed wetland system provided in the embodiment of the application;
fig. 2 is a schematic diagram of a soil infiltration pond according to an embodiment of the present application.
Icon: 1-a grid well; 2-a sedimentation tank; 3-a sand filter; 4-a soil infiltration tank; 5-first-stage oxidation pond; 6-first-stage horizontal subsurface flow constructed wetland; 7-second-stage vertical subsurface flow constructed wetland; 8-three-stage horizontal subsurface flow constructed wetlands; 9-a landscape pond; 10-a crushed stone layer; 11-porous spherical plastic layer; 12-a zeolite iron chip mixed layer; 13-a soil limestone mixing layer; 14-coarse sand layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "upper" and "lower" are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation and operation, and thus, should not be construed as limiting the present application.
Further, in the present application, unless expressly stated or limited otherwise, the first feature may be directly contacting the second feature or may be directly contacting the second feature, or the first and second features may be contacted with each other through another feature therebetween, not directly contacting the second feature. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example (b):
referring to fig. 1 and fig. 2, the present application provides an intelligent ecological purification artificial wetland system, which mainly comprises a grid well 1, a sedimentation tank 2, a sand filter 3, a soil infiltration tank 4, a primary oxidation pond 5, a primary horizontal subsurface flow artificial wetland 6, a secondary vertical subsurface flow artificial wetland 7, a tertiary horizontal subsurface flow artificial wetland 8 and a landscape pond 9. The system realizes primary treatment of initial rainwater through a soil infiltration system consisting of a grid well 1, a sedimentation tank 2, a sand filter 3 and a soil infiltration filter 4, realizes deep purification treatment of the initial rainwater through an ecological purification system consisting of a primary oxidation pond 5, a primary horizontal subsurface flow constructed wetland 6, a secondary vertical subsurface flow constructed wetland 7, a tertiary horizontal subsurface flow constructed wetland 8 and a landscape pond 9, and then discharges the initial rainwater into a downstream river channel. When the water inflow exceeds the treatment load of the artificial wetland system, overflowing to a downstream river channel; when the quality of the inlet water is good, the inlet water directly enters the first-stage oxidation pond 5 to start the subsequent treatment; if the water quality is poor, the conventional treatment is performed from the grating well 1.
Furthermore, the positions and the elevations of the sedimentation tank 2, the sand filter 3, the soil infiltration tank 4, the primary oxidation pond 5, the primary horizontal subsurface flow artificial wetland 6, the secondary vertical subsurface flow artificial wetland 7, the tertiary horizontal subsurface flow artificial wetland 8 and the landscape pond 9 are sequentially reduced, so that the gravity flow of the sewage of the whole system is realized, and the energy consumption of the system is reduced. The grid well 1 is arranged at the front end of the whole system and is used for intercepting soft entanglement, larger solid particle impurities and flotage and preventing the garbage, the impurities and the suspended matters from flowing into a subsequent unit. And the sedimentation tank 2 is used for settling suspended substances in initial rainwater, and a water inlet and a water outlet of the sedimentation tank are both arranged at the upper part of the tank. In addition, fine sand is filled in the sand filter 3; the water distribution pipe is arranged on the surface of the sand filter 3, and a PE perforated pipe is adopted for uniformly distributing water and enhancing the filtering effect; the water outlet of the sand filter 3 is arranged at the middle lower part of the filter and can be specifically adjusted according to the ground elevation condition of the downstream soil infiltration filter 4.
Furthermore, the water distribution pipe of the soil infiltration tank 4 is arranged on the tank surface of the soil infiltration tank 4, and a PE perforated pipe is adopted for uniform water distribution. The filler in the soil infiltration tank 4 is divided into 5 layers, and the filler is sequentially arranged from top to bottom: (1) filling a crushed stone layer 10 consisting of crushed stones with the specification of 10-30 mm, wherein the thickness of the layer is 25cm, and the layer mainly plays a role in water distribution; (2) a porous spherical plastic layer 11 which is formed by porous spherical plastic filler with the specification of 20mm is filled, the layer thickness is 45cm, and the filler is mainly used for enriching microorganisms to remove organic matters in sewage; (3) filling a mixed zeolite-iron chips layer 12 consisting of 95% zeolite and 5% iron chips with a thickness of 25cm, wherein the zeolite is mainly used for removing NH 4 + -N, scrap iron is mainly used to remove TP; (4) filling a soil limestone mixing layer 13 consisting of 60% of soil, 20% of limestone, 15% of cinder and 5% of wood chips, wherein the thickness is 70cm, the limestone is used for supplementing alkalinity, the cinder is used for increasing the permeability of the system, and the wood chips provide a slow-release carbon source for denitrification; (5) the coarse sand layer 14 made of coarse sand is filled, the thickness is 25cm, and the purpose is mainly to prevent soil erosion. It should be noted that an aeration pipe is arranged between the zeolite iron scrap mixing layer 12 and the soil limestone mixing layer 13, and the aeration pipe can meet the oxygen amount required by aerobic microorganisms and the mixing condition of sufficient contact between sewage and activated sludge, so as to enhance the treatment effect; in addition, the water is collected at the bottom of the pool through a seamless perforated steel pipe.
It should be noted that the effective depth of the primary oxidation pond 5 is 1.2m, the hydraulic retention time is 20h, and the water inlet and the water outlet of the primary oxidation pond 5 are both arranged at the upper part of the primary oxidation pond. The stable ecosystem of animals, plants and microorganisms is formed in the primary oxidation pond 5, the ecological purification can be continuously carried out on pollutants in water, wherein aquatic plants such as water hyacinth, reed canary grass, cattail, potamogeton crispus and duckweed are planted on the surface layer, the pollutants can be effectively reduced, the ecological water purification effect is realized, the pond adjusting effect is realized, the system adjusting effect on the water quality and water quantity can be improved, the system impact resistance is improved, and the preposed buffering effect is provided for the follow-up artificial wetland. And a water level monitoring device is arranged in the first-stage oxidation pond 5, when the water level is too low, water is pumped from a downstream river channel through a water pump to supplement the water, and the problems that the ecological structure of the wetland is damaged due to water shortage of the system and the like are avoided.
Meanwhile, the first-stage horizontal subsurface flow constructed wetland 6 and the third-stage horizontal subsurface flow constructed wetland 8 are both composed of brick-concrete structures, the length of the first-stage horizontal subsurface flow constructed wetland and the third-stage horizontal subsurface flow constructed wetland is 15m, the bottom gradient of the first-stage horizontal subsurface flow constructed wetland and the third-stage horizontal subsurface flow constructed wetland is 0.5%, the effective water depth of the first-stage horizontal subsurface flow constructed wetland and the third-stage horizontal subsurface flow constructed wetland is 0.7m, and water inlets and water outlets of the first-stage horizontal subsurface flow constructed wetland and the third-stage horizontal subsurface flow constructed wetland are respectively arranged at the upper parts of the first-stage horizontal subsurface flow constructed wetland and the third-stage horizontal subsurface flow constructed wetland. The first-level horizontal subsurface flow constructed wetland 6 and the third-level horizontal subsurface flow constructed wetland 8 mainly comprise soil, fillers, grids and plants, and perforated tracery walls are adopted for water distribution and water collection. The height of the filler layers of the first-level horizontal subsurface flow constructed wetland 6 and the third-level horizontal subsurface flow constructed wetland 8 is 0.9m, the lower parts of the first-level horizontal subsurface flow constructed wetland and the third-level horizontal subsurface flow constructed wetland are filled with crushed stones, the height of the crushed stones is 0.7m, and a steel slag reaction grid with the width of 0.5m, a limestone reaction grid with the width of 1m and a zeolite reaction grid with the width of 1m are respectively filled at positions 3.5m, 8m and 12m away from the water inlet; the upper parts of the first-level horizontal subsurface flow constructed wetland 6 and the third-level horizontal subsurface flow constructed wetland 8 are filled with farming soil, and the height is 0.2m; the plants planted on the surface layer of the two plants are canna, cattail, grassleaf sweelflag rhizome, day lily, cymbidium and yellow flag rhizome.
In addition, the second-stage vertical subsurface flow constructed wetland 7 is composed of a brick-concrete structure, the length is 15m, the bottom is a flat slope, and the effective water depth is 0.7m. The water distribution pipe is arranged on the surface of the pool, and a PE perforated pipe is adopted for uniformly distributing water; the water outlet of the second-stage vertical subsurface flow constructed wetland 7 is arranged at the bottom of the wetland, the plants planted on the surface layer are canna and reed, and the planting depth is 20-25 cm.
Furthermore, an ecological floating island is arranged on the landscape pond 9, the ecological floating island is made of PVC floating plates, a nylon net is connected to the bottom of the ecological floating island, porous spherical biological fillers with the diameter of 30mm are arranged in the nylon net, and the spherical biological fillers can be attached to microorganisms to promote pollutant decomposition and provide a growth space for growth of plants in the ecological floating island. The ecological floating island is square in unit shape, the coverage area accounts for 60% -80% of the water surface of the landscape pond 9, and the floating island plants are Thalictrum aquilegifolium, rhizoma acori graminei, iris tectorum, arrowhead, cattail, lythrum salicaria, canna indica, saxifrage and the like.
In conclusion, the system can solve the problem of adverse effects such as insufficient water holding capacity in the artificial wetland in dry seasons, damage to the ecological structure of the wetland and the like; the urban water environment problem can be solved, and the non-point source pollution caused by initial rainwater can be reduced; in addition, the system can solve the problems of high cost and high energy consumption of initial rainwater treatment, and realizes low cost, low energy consumption, low investment and high efficiency of initial rainwater treatment. In addition, the method has positive effects of ensuring the water quality of the urban water body, improving the landscape effect of the urban water environment and promoting the ecological development of the urban water, accords with the concept of green development, and has great popularization and application values.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. An ecological purification artificial wetland system is characterized by comprising a grating well, a sedimentation tank, a sand filter, a soil infiltration tank, a primary oxidation pond, a primary horizontal subsurface flow artificial wetland, a secondary vertical subsurface flow artificial wetland, a tertiary horizontal subsurface flow artificial wetland and a landscape pond which are sequentially connected; the water outlet of the grid well is connected with the water inlet of the sedimentation tank through a drain pipe, the water outlet of the sedimentation tank is connected with the water distribution pipe of the sand filter through a drain pipe, and the water outlet of the sand filter is connected with the water distribution pipe of the soil infiltration filter through a drain pipe and is used for primary treatment of initial rainwater; the water outlet of the soil infiltration pond is connected with the water inlet of the primary oxidation pond through a water drainage pipe, the water outlet of the primary oxidation pond is connected with the water inlet of the primary horizontal subsurface flow constructed wetland through a water drainage pipe, the water outlet of the primary horizontal subsurface flow constructed wetland is connected with the water inlet of the secondary vertical subsurface flow constructed wetland through a water drainage pipe, the water outlet of the secondary vertical subsurface flow constructed wetland is connected with the water inlet of the tertiary horizontal subsurface flow constructed wetland through a water drainage pipe, and the water outlet of the tertiary horizontal subsurface flow constructed wetland is connected with the landscape pond through a water drainage pipe and is used for deeply purifying initial rainwater and then discharging the initial rainwater into a downstream river channel.
2. The ecological purification artificial wetland system of claim 1, wherein the elevation of the setting positions of the sedimentation tank, the sand filter, the soil infiltration tank, the primary oxidation pond, the primary horizontal subsurface flow artificial wetland, the secondary vertical subsurface flow artificial wetland, the tertiary horizontal subsurface flow artificial wetland and the landscape pond are sequentially reduced.
3. The ecological purification artificial wetland system according to claim 1, wherein a water level monitoring device and a water quality monitoring device are arranged at the water inlet pipe of the grid well, the grid well is arranged at the front end of the ecological purification artificial wetland system, and the water inlet and the water outlet of the grid well are both higher than the sedimentation tank.
4. The ecological purification artificial wetland system of claim 1, wherein the sand filter is internally filled with fine sand, and the water distribution pipe is arranged on the upper surface of the sand filter and is a PE perforated pipe; and the water outlet of the sand filter is arranged at the lower part of the sand filter.
5. The ecological purification constructed wetland system of claim 1, wherein the water distribution pipe of the soil infiltration tank is arranged on the upper surface of the soil infiltration tank and is a PE perforated pipe, the filler in the soil infiltration tank sequentially comprises a gravel layer, a porous spherical plastic layer, a zeolite iron chip mixing layer, a soil limestone mixing layer and a coarse sand layer from top to bottom, an aeration pipe is arranged between the zeolite iron chip mixing layer and the soil limestone mixing layer, and the water is collected at the bottom of the soil infiltration tank through a seamless perforated steel pipe.
6. The ecological purification constructed wetland system of claim 1, wherein a water inlet and a water outlet are respectively arranged at two opposite sides of the upper part of the primary oxidation pond, and a water level monitoring device is arranged in the primary oxidation pond.
7. The ecological purification constructed wetland system of claim 1, wherein the first-stage horizontal subsurface flow constructed wetland and the third-stage horizontal subsurface flow constructed wetland are both composed of brick-concrete structures, and have a length of 15m and a bottom gradient of 0.5%; the two opposite sides of the upper part of the first-stage horizontal subsurface flow artificial wetland are respectively provided with a water inlet and a water outlet, and the two opposite sides of the upper part of the third-stage horizontal subsurface flow artificial wetland are respectively provided with a water inlet and a water outlet.
8. The ecological purification artificial wetland system of claim 1, wherein the secondary vertical subsurface flow artificial wetland is composed of a brick-concrete structure, and has a length of 15m and a flat bottom slope; the upper surface of the second-stage vertical subsurface flow constructed wetland is provided with a water distribution pipe which is a PE perforated pipe; and a water outlet is formed in the bottom of the second-stage vertical subsurface flow constructed wetland.
9. The ecological purification constructed wetland system of claim 1, wherein an ecological floating island is arranged at the upper part of the landscape pond, and the ecological floating island is composed of a PVC floating plate; the bottom of the landscape pond is provided with a nylon net, and the nylon net is internally provided with a porous spherical biological filler with the diameter of 30 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222823119.1U CN218709755U (en) | 2022-10-26 | 2022-10-26 | Ecological purification constructed wetland system |
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| CN202222823119.1U CN218709755U (en) | 2022-10-26 | 2022-10-26 | Ecological purification constructed wetland system |
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