CN217895259U - Artificial wetland system suitable for river water quality improvement and ecological restoration of sand beach land - Google Patents
Artificial wetland system suitable for river water quality improvement and ecological restoration of sand beach land Download PDFInfo
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- CN217895259U CN217895259U CN202220975608.6U CN202220975608U CN217895259U CN 217895259 U CN217895259 U CN 217895259U CN 202220975608 U CN202220975608 U CN 202220975608U CN 217895259 U CN217895259 U CN 217895259U
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Abstract
The utility model discloses a river quality of water improves and ecological remediation's constructed wetland system suitable for sha tan, include: a water collecting area with a river water inlet, a farmland non-point runoff inlet and a straight water outlet which is vertical to the water flow direction; the ecological overflow pond area is provided with water drop steps and pond bottom submerged plant layers positioned between the water drop steps, and the outlet end of the ecological overflow pond area is provided with a transverse water collecting channel with a one-way outlet; in the vertical flow wet area, a biochemical interception and filtration device and a rotary propeller are arranged in a linear flow passage; a plurality of stepped runners are arranged in an area surrounded by the L-shaped water collecting channel of the gravity flow drainage area, the inlet ends of the stepped runners are positioned on one side of a farmland, and the outlet ends of the stepped runners are positioned on one side of a river. The utility model discloses simple structure, the construction of being convenient for, it is quick convenient to pack to change, and management cost is low, implements effectually, and it is located between farmland and the river, can draw the upstream water to flow into the beach, and the interception purifies agricultural non-point source and pollutes, purifies river quality of water, improves the self-purification ability of river water.
Description
Technical Field
The utility model belongs to the technical field of river mud flat treatment technique and specifically relates to a river quality of water improves and ecological remediation's constructed wetland system suitable for sand beach ground.
Background
The river beach land refers to natural beach land formed by sediment deposition on river banks through which rivers flow, and the landform, vegetation coverage, animal and plant inhabitation and the like of the river beach land are changed along with the change of the water level of river water. Because a large amount of silted mud on the beach land is exposed in the environment all the year round, the river ecosystem is discontinuous and tends to ecological fragmentation; moreover, the beach land is sometimes occupied as cultivated land, and when water and soil loss and other phenomena occur, agricultural non-point source pollution is directly introduced into the river, so that the water quality is deteriorated, and the recovery of an ecological system is particularly not facilitated.
In recent years, with the construction of ecological galleries and the promotion of protection and restoration of ecological buffer zones of rivers and lakes, ecological reconstruction of large occupied or exposed bottomlands begins, and becomes an important part of river ecological restoration. However, the existing restoration measures mainly plant trees, shrubs and emergent aquatic plants suitable for the growth of river beach lands, the water quality and the soil quality cannot be effectively improved, and the ecological control effect of the river channel is not obvious.
Disclosure of Invention
In order to solve the problem, the utility model provides a river quality of water improves and ecological remediation's constructed wetland system suitable for sand beach ground specifically can take following technical scheme:
artificial wetland system suitable for river quality of water improvement and ecological remediation on sand beach ground, set up between farmland and river, include along rivers to setting gradually
The water collecting area is provided with a river water inlet, a farmland non-point runoff inlet and a linear water outlet which is vertical to the water flow direction, and the linear water outlet is provided with a trash rack;
the ecological overflow pond area is provided with water drop steps arranged along the water flow direction, pond bottom submerged plant layers are arranged between the water drop steps, a transverse water collecting channel is arranged at the outlet end of the ecological overflow pond area, and a one-way outlet at one end of the transverse water collecting channel is formed in the transverse water collecting channel;
the vertical wet flow area is provided with a plurality of transverse clapboards which are arranged in a staggered mode, and a biochemical interception filtering device and a rotary propeller are arranged in a broken-line-shaped flow passage formed by the transverse clapboards;
the gravity flow drainage area is provided with an L-shaped water collecting channel communicated with the zigzag-shaped flow channel, a plurality of stepped flow channels are arranged in an area enclosed by the L-shaped water collecting channel, the inlet ends of the stepped flow channels are positioned on one side of a farmland, and the outlet ends of the stepped flow channels are positioned on one side of a river.
And the river inlet is provided with a flow electric control valve.
The depth of the ecological overflow pond area is 2.5m, the slope ratio is 1.
The biochemical interception and filtration device comprises a plurality of filtration units, each filtration unit comprises a steel bar framework and a material storage drawer, and the steel bar framework is provided with three material storage cavities which are vertically overlapped; the material storage drawers are three corresponding to the material storage cavities, each material storage drawer is provided with a bottom surface and a side surface of a honeycomb lattice bingo, membrane hanging biological filler balls are filled in the material storage drawer at the lower layer, basketry filler is filled in the material storage drawer at the middle layer, and plant growth soil for planting emergent aquatic plants is filled in the material storage drawer at the upper layer.
The heights of the material storage drawers are respectively 30cm, 40cm and 20cm from bottom to top.
The rotary propeller is arranged at one end, close to a river, in the zigzag-shaped flow channel.
The L-shaped water collecting channel comprises a first section and a second section, the first section is transversely arranged, the second section is arranged close to one side of a farmland, a plurality of water outlets are formed in the second section corresponding to the stepped runners, a water distributor is arranged at the position of each water outlet, three stages formed by building ecological bricks are arranged in each stepped runner, and an anti-seepage film and a planting soil layer for planting emergent aquatic plants are sequentially arranged on each three stage from bottom to top.
The farmland non-point source runoff inlet is communicated with a grass planting ditch arranged on one side of a farmland, and the unilateral slope ratio of the grass planting ditch is less than or equal to 1:3, the width is 0.5-1m.
The constructed wetland system suitable for the river water quality improvement and ecological restoration of the sand beach land, provided by the utility model, has the advantages of simple structure, convenient construction, quick and convenient filler replacement, low management cost and good implementation effect, is positioned between the farmland and the river, can guide the upstream incoming water to flow into the beach, intercept and purify the agricultural non-point source pollution, purify the river water quality and improve the self-purification capacity of the river water body; meanwhile, sandy soil can be effectively improved, river channel erosion and water and soil loss are prevented, the ecological system of the river beach land is restored on the basis of not damaging the original flood control function of the river channel, a river bank habitat is created, a diversified ecological corridor is built, and the biological diversity of the river channel beach land is increased.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure of the filter unit of fig. 1.
Fig. 3 is a schematic view showing an installation state of the filter unit of fig. 1.
Fig. 4 is a schematic structural view of the stepped flow channel in fig. 1.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings, and the embodiments of the present invention are implemented on the premise of the technical solution of the present invention, and detailed embodiments are given, but the scope of the present invention is not limited to the following embodiments.
River quality of water improve and ecological remediation's constructed wetland system suitable for sha shoal, be located between farmland and the river, include along rivers to catchment area, ecological overflow pond district, the wet area of vertical current and the gravity flow drainage area that sets gradually.
Specifically, as shown in fig. 1 to 4, the water collection area is located at the upstream, and is a water flow inlet of the artificial wetland system, and is used for receiving river inflow and farmland non-point source runoff, wherein a flow electric control valve 11 is installed at a river water inlet of the water collection area, and can adjust the water quantity according to the water quality; for farmland non-point source runoff, the farmland non-point source runoff inlet is connected with a farmland non-point source runoff inlet of a water collecting area through a grass planting ditch 12 arranged on one side of a farmland. Normally, the unilateral slope ratio of the grass planting ditch 12 is less than or equal to 1:3, the width is 0.5-1m. The water flow entering the water collecting area is discharged to the ecological overflow pond area through the straight water flow outlet 13 of the water collecting area after being temporarily stopped. The straight water outlet 13 is perpendicular to the water flow direction, and a trash rack is arranged at the position and used for intercepting suspended matters in the water flow and primarily purifying the water flow.
The ecological overflow pond area is mainly used for drop water oxygenation of water flow, and emergent aquatic plants, stone blocks 21, wood piles and the like can be arranged in the peripheral shallow water area to form an ecological landscape system, so that the landscape effect is enhanced. One or more than one (two in figure 1) ponds 22 in the ecological overflow pond area can be arranged in parallel according to a landscape design scheme, the depth of each pond 22 is 2.5m, the slope ratio is 1. The water drop steps 23 are formed by building and protecting ecological bricks, and pond bottom submerged plant layers are arranged between the adjacent water drop steps 22, so that local dominant species can be selected according to the proportion for planting, and the purpose of water drop oxygenation is fully achieved when water flows pass through the region. The outlet end of the ecological overflow lagoon is also provided with a transverse catchment channel 24 which is of a one-way outlet configuration, typically located on the side adjacent the river and from there into the vertical flow-through area.
The vertical flow wet area is internally provided with a biochemical interception and filtration device which is sequentially divided into a biodegradable layer, a filler filtering layer and an object utilization layer from bottom to top. Two layers of membrane-hanging biological filler balls 31 with the diameter of 10cm are laid on the biological degradation layer, and the membrane-hanging biological filler balls 31 are used for hanging membranes in an anaerobic environment by using activated sludge of an anaerobic digestion tank in a local sewage treatment plant; the filter layer of the filler is filled with the basketry filler 32, so that the filter layer has better denitrification and dephosphorization effects; the plant utilization layer is filled with plant growth soil 33, which is formed by mixing 30-50mm diameter gravel and planting soil according to the proportion of 2. When water flow passes through the biochemical interception and filtration device, the microbial degradation, filler absorption and plant absorption of impurities in the water flow can be realized.
In this embodiment, a plurality of transverse partition plates 34 arranged in a staggered manner are installed in the vertical flow wet area, and the transverse partition plates 34 can form a zigzag-shaped flow channel capable of prolonging the actual path length of the water flow, so that the impurity degradation and absorption effects can be improved. The biochemical interception filtering device is composed of a plurality of filtering units, can be flexibly assembled and disassembled according to the specific structure of the flow channel, and is convenient for filler replacement and later maintenance. The filtering unit comprises three material storage cavities which are vertically overlapped and formed by a steel reinforcement framework 35, a material storage drawer 36 is arranged in each material storage cavity, the bottom surface and the side surface of each material storage drawer 36 are packaged by adopting a honeycomb lattice guest net, and when the filler needs to be installed or replaced, the corresponding material storage drawer 36 is pulled out horizontally. The three material storage drawers 36 of each filtering unit are respectively used for filling biofilm culturing biological filler balls 31, rice huller basketry fillers 32 and plant growing soil 33 from bottom to top, and the heights of the three material storage drawers 36 are respectively 30cm, 40cm and 20cm. In order to accelerate the water flow rate, a rotary propeller 37 (a commercially available product) can be installed at the bending position of the fold-line-shaped flow channel where a hydraulic dead angle is easy to form. In this embodiment, the rotary propellers 37 are all installed at one end of the broken-line-shaped flow passage close to the river.
The water outlet of the vertical flow wet area is communicated with the L-shaped water collecting channel 41 of the gravity flow drainage area. The L-shaped water collecting channel 41 includes a first section disposed horizontally near the vertical flow wetland area and a second section disposed near one side of the farmland, a plurality of stepped flow channels 42 are disposed in the region enclosed by the first section and the second section, and the inlet end of each stepped flow channel 42 is located at one side of the farmland and the outlet end is located at one side of the river. Specifically, a plurality of water outlets are provided on the second section of the L-shaped water collecting channel 41 corresponding to the stepped flow channel 42, and a water distributor 43 is installed at each water outlet, so that the upstream water can be uniformly distributed. In order to make the water flow smoothly discharged into the river channel and increase the landscape effect, three steps (see fig. 4) built by ecological bricks are arranged in each stepped flow channel 42, and an impermeable membrane 44 and a planting soil layer 45 for planting emergent aquatic plants are sequentially arranged on the three steps from bottom to top.
It can be seen that, the utility model discloses the flow that accessible flow automatically controlled valve 11 control got into the catchment area through the 12 collection farmland non-point sources runoff in grass planting ditch, and the rivers can carry out the suspended solid interception, drop oxygenate, plant absorption, filler absorption and microbial degradation through ecological overflow pond district and vertical current wetland time zone, then flow into the river course from gravity flow drainage zone, reach and carry out better purified effect to sewage in the finite space, compromise the view effect in wet area simultaneously. Furthermore, the utility model discloses easily make, it is very nimble convenient to change the packing, is favorable to the operation and the maintenance of wetland.
It should be noted that in the description of the present invention, terms of orientation or positional relationship such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Claims (8)
1. The utility model provides a river quality of water improves and ecological remediation's constructed wetland system suitable for sha tan, sets up between farmland and river, its characterized in that: including arranging in sequence along the water flow direction
The water collecting area is provided with a river water inlet, a farmland non-point source runoff inlet and a linear water flow outlet which is vertical to the water flow direction, and the linear water flow outlet is provided with a trash rack;
the ecological overflow pond area is provided with water drop steps arranged along the water flow direction, a pond bottom submerged plant layer is arranged between the water drop steps, the outlet end of the ecological overflow pond area is provided with a transverse water collecting channel, and the transverse water collecting channel is provided with a one-way outlet positioned at one end;
the vertical wet flow area is provided with a plurality of transverse clapboards which are arranged in a staggered mode, and a biochemical interception filtering device and a rotary propeller are arranged in a broken-line-shaped flow passage formed by the transverse clapboards;
the gravity flow drainage area is provided with an L-shaped water collecting channel communicated with the zigzag-shaped flow channels, a plurality of stepped flow channels are arranged in an area surrounded by the L-shaped water collecting channel, the inlet ends of the stepped flow channels are located on one side of a farmland, and the outlet ends of the stepped flow channels are located on one side of a river.
2. The constructed wetland system suitable for improving the water quality of rivers and ecologically restoring the sandy beach as claimed in claim 1, which is characterized in that: and the river inlet is provided with a flow electric control valve.
3. The constructed wetland system suitable for river water quality improvement and ecological restoration on the beach land as claimed in claim 1, which is characterized in that: the depth of the ecological overflow pond area is 2.5m, the slope ratio is 1.
4. The constructed wetland system suitable for improving the water quality of rivers and ecologically restoring the sandy beach as claimed in claim 1, which is characterized in that: the biochemical interception and filtration device comprises a plurality of filtration units, each filtration unit comprises a steel bar framework and a material storage drawer, and the steel bar framework is provided with three material storage cavities which are vertically overlapped; the material storage drawers are three corresponding to the material storage cavities, each material storage drawer is provided with a bottom surface and a side surface of a honeycomb lattice bingo, membrane hanging biological filler balls are filled in the material storage drawer at the lower layer, basketry filler is filled in the material storage drawer at the middle layer, and plant growth soil for planting emergent aquatic plants is filled in the material storage drawer at the upper layer.
5. The constructed wetland system suitable for improving the water quality of rivers and ecologically restoring the sandy beach as claimed in claim 4, which is characterized in that: the heights of the material storage drawers are respectively 30cm, 40cm and 20cm from bottom to top.
6. The constructed wetland system suitable for river water quality improvement and ecological restoration on the beach land as claimed in claim 1, which is characterized in that: the rotary propeller is arranged at one end, close to the river, in the polygonal flow channel.
7. The constructed wetland system suitable for river water quality improvement and ecological restoration on the beach land as claimed in claim 1, which is characterized in that: the L-shaped water collecting channel comprises a first section and a second section, the first section is transversely arranged, the second section is arranged close to one side of a farmland, a plurality of water outlets are formed in the second section corresponding to the stepped runners, a water distributor is arranged at the position of each water outlet, three stages formed by building ecological bricks are arranged in each stepped runner, and an anti-seepage film and a planting soil layer for planting emergent aquatic plants are sequentially arranged on each three stage from bottom to top.
8. The constructed wetland system suitable for river water quality improvement and ecological restoration on the beach land as claimed in claim 1, which is characterized in that: the farmland non-point runoff inlet is communicated with a grass planting ditch arranged on one side of a farmland, and the unilateral slope ratio of the grass planting ditch is less than or equal to 1:3, the width is 0.5-1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220975608.6U CN217895259U (en) | 2022-04-26 | 2022-04-26 | Artificial wetland system suitable for river water quality improvement and ecological restoration of sand beach land |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220975608.6U CN217895259U (en) | 2022-04-26 | 2022-04-26 | Artificial wetland system suitable for river water quality improvement and ecological restoration of sand beach land |
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| Publication Number | Publication Date |
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| CN217895259U true CN217895259U (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220975608.6U Active CN217895259U (en) | 2022-04-26 | 2022-04-26 | Artificial wetland system suitable for river water quality improvement and ecological restoration of sand beach land |
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| CN (1) | CN217895259U (en) |
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2022
- 2022-04-26 CN CN202220975608.6U patent/CN217895259U/en active Active
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