CN216639054U - Non-point source pollution channel intercepting and guiding system for urban and rural areas - Google Patents

Abstract

The utility model relates to a non-point source pollution channel intercepting and guiding system in urban and rural areas, which comprises a channel, an overflowing slope, a greening protective zone, a water inlet assembly and a water drainage assembly, wherein the channel comprises a channel wall body and a channel cushion layer, the channel is arranged between the overflowing slope and a river channel, rainwater from the overflowing slope and the greening protective zone enters the channel through the water inlet assembly, water in the channel enters the river channel through the water drainage assembly, and the water in the channel also enters a next-stage wetland treatment unit through the tail end of the channel. The utility model treats non-point source pollution in urban and rural areas, solves the problem of rain and sewage management caused by the factors of complicated non-point source pollution sources, large change of water quality and water quantity and the like, has the functions of interception, energy dissipation, diversion, water storage and pressure reduction, can effectively prevent waterlogging disasters, improves the pressure resistance of channels, enhances the landscape effect around river channels and the diversity of habitats, and is suitable for non-point source pollution treatment in urban and rural areas.

Description

Non-point source pollution channel intercepting and guiding system for urban and rural areas

Technical Field

The utility model relates to the technical field of artificial wetlands, in particular to a non-point source pollution channel intercepting and guiding system for urban and rural areas, which is used for intercepting, dissipating energy and guiding non-point source pollution.

Background

With the rapid development of urbanization, the urban construction process is also accelerated, so that the hardening rate of the urban ground surface is increased rapidly, the waterproof ratio is increased gradually, and a large amount of rainwater cannot permeate into soil or is trapped by plants through the urban ground surface when the urban ground surface encounters rainy days or rainstorm days.

In rural areas, the source of non-point source pollution is more complex. On one hand, the breeding pollutants and the planting pollutants generated in the rural life and agricultural production process are various in types and complex in components; on the other hand, the topography and the landform in rural areas are complex.

Therefore, a technology is urgently needed to build an ecological defense line between the non-point source pollution and the river channel, prevent the non-point source pollution from entering a receiving water body, and simultaneously intercept and orderly guide the non-point source pollution to a treatment system for centralized treatment.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a non-point source pollution channel intercepting system in urban and rural areas.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a system is cut and led to non-point source pollution channel in city and rural area, the channel is cut and is led the system and face the river course and establish, the channel is cut and is led the system including channel, overflow slope, afforestation protecting band, subassembly and drainage component of intaking, the channel is including channel wall body and channel bed course, the channel sets up between overflow slope and river course, the rainwater that comes from overflow slope and afforestation protecting band gets into the channel through the subassembly of intaking, water in the channel gets into the river course through drainage component, water in the channel still gets into next level wetland processing unit through the channel end.

Further specifically, the channel comprises a channel wall body and a channel cushion layer, a channel coping for increasing the strength of the channel wall body is arranged at the top of the channel wall body, and the channel coping is formed by pouring concrete.

Further specifically, an overflowing slope is arranged on the water inlet side of the channel, the bottom of the overflowing slope is connected with the wall of the channel on the water inlet side of the channel, pebbles and concrete are mixed and paved to form the overflowing slope, and the gradient of the overflowing slope is 0.3-1.

Further specifically, one side of the channel that intakes is provided with a greening protective belt, the greening protective belt is connected with the top of the overflowing slope, the greening protective belt is arranged on a raw soil layer beneficial to plant growth and breeding, and the greening protective belt plants various terrestrial plants according to a scientific collocation principle.

Further specifically, one side of intaking the channel is provided with the subassembly of intaking, the subassembly of intaking is including setting up a plurality of overflow mouth inside the channel wall body of one side of intaking the channel, overflow mouth sets up in the channel bears down on one's side, overflow mouth bottom height equals or is higher than overflow slope bottom height, overflow mouth receives the overflow rainwater that flows down from overflow slope.

Further specifically, the overflowing opening is provided with an intercepting component for intercepting the ground garbage flushed by the overflowing rainwater, the intercepting component comprises an intercepting groove arranged in the overflowing opening and an intercepting fence arranged in the intercepting groove, and the intercepting fence is made of crossed wood or steel.

More specifically, the water inlet assembly further comprises a drainage channel, a water outlet pipe of the upper-stage wetland treatment unit and a water outlet pipe of the integrated treatment facility, an interception grid is arranged at an outlet of the drainage channel, and the inclination angle of the interception grid is 30-90 degrees.

Further specifically, channel play water one side is provided with drainage assembly, drainage assembly is including row's mouth and the facility of drawing water, row's mouth is with channel and river course intercommunication, the setting height of row's mouth is higher than the normal water level height in local river course, row's mouth end is provided with electric gate.

Further specifically, the drainage assembly further comprises a flood discharge pipe and drainage holes, the flood discharge pipe is arranged inside the channel wall body and leads to the river channel, and the tail end of the flood discharge pipe is provided with an electric gate.

More specifically, the drainage holes are arranged in a channel wall body on the water outlet side of the channel, the drainage holes are a plurality of circular holes arranged at equal intervals, the minimum arrangement height of the drainage holes is greater than the historical highest water level height of a local river channel, and the maximum arrangement height of the drainage holes is less than the road surface height.

The utility model has the beneficial effects that: a non-point source pollution channel intercepting and guiding system for urban and rural areas intercepts and guides non-point source pollution of the urban and rural areas, and solves the problem of rain and sewage management caused by factors such as complex non-point source pollution sources, large water quality and water quantity changes and the like; the solid garbage carried in the incoming water is effectively intercepted by arranging the overflowing port and the intercepting grid; the overflow slope and the flood discharge pipe are adopted to dissipate and reduce the energy of the incoming water, so that the damage of water pressure impact to the wall body of the channel is reduced; the greening protective belt is arranged to intercept silt, prevent the bottom of the open channel from accumulating silt, enhance the landscape effect around the river channel and improve the diversity of the habitat; by arranging the electric gate, river water is prevented from flowing backwards in rainy seasons, and water accumulation and flood disasters in low-lying areas are reduced.

Drawings

FIG. 1 is a process flow diagram of example 1 of the present invention;

FIG. 2 is a floor plan of embodiment 1 of the present invention;

FIG. 3 is a sectional view taken along line A-A in example 1 of the present invention;

FIG. 4 is a sectional view taken along line B-B in example 1 of the present invention;

FIG. 5 is a floor plan view of embodiment 2 of the present invention;

FIG. 6 is a sectional view taken along line A-A in example 2 of the present invention;

FIG. 7 is a sectional view taken along line B-B in example 2 of the present invention;

FIG. 8 is a schematic view of the structure of the diffuse flow port of embodiment 1 and embodiment 2 of the present invention;

fig. 9 is a schematic view of a drainage hole structure of embodiment 2 of the present invention;

in the figure: 1. a channel; 2. a river channel; 3. overflowing rainwater; 4. a superior wetland treatment unit; 5. a drainage channel; 6. an integrated processing facility; 7. a next-stage wetland treatment unit; 8. greening a protective belt; 9. an overtopping slope; 10. a channel wall; 11. connecting slopes; 12. a footpath; 13. pressing the top of the channel; 14. a flow port; 15. a water outlet pipe of the upper-stage wetland treatment unit; 16. an integrated treatment facility water outlet pipe; 17. a primary soil layer; 18. Revetment; 19. an interception gate; 20. a concrete cushion; 21. a gravel cushion layer; 22. a pumping facility; 23. discharging; 24. an electric gate; 25. a flood discharge pipe; 26. a drainage aperture; 27. intercepting columns; 28. and the interception groove.

Detailed Description

The utility model is described in detail below with reference to the figures and the detailed description.

As shown in fig. 1, 3, 6, a system is cut and led to non-point source pollution channel in city and rural area, the channel is cut and is led the system and face the river course and establish, the channel is cut and is led the system including channel, overflow slope, afforestation protecting band, subassembly and drainage module of intaking, the channel is including channel wall body and channel bed course, the channel sets up between overflow slope and river course, the rainwater that comes from overflow slope and afforestation protecting band gets into the channel through the subassembly of intaking, water in the channel gets into river course and next level wetland processing unit through drainage module.

The channel 1 is formed by a channel wall body 10 and a channel cushion layer, the width of the channel 1 is about 1m, the height of water passing is 1-2m, and the length is determined according to the actual situation. The channel wall body 10 is built by bricks, the periphery of the channel wall body is uniformly coated by mortar, the top of the channel wall body is provided with a channel coping 13, and the channel coping 13 is poured by concrete so as to enhance the strength of the channel wall body 10. Channel bed course is including setting gradually down from last concrete bed course 20 and rubble bed course 21 of channel wall 10 bottom, concrete bed course 20 thickness is about 200mm, rubble bed course 21 thickness is about 100mm, concrete bed course 20 and rubble bed course 21 guarantee that 1 inside water of channel is unobstructed, prevent simultaneously that the incoming water from oozing down to soil when 1 inside of channel flows, pollute groundwater.

The greening protective belt 8 is arranged on the water inlet side of the channel 1, various terrestrial plants are planted on the greening protective belt 8 according to the scientific collocation principle, and the greening protective belt 8 is arranged on the original soil layer 17, so that the plants can grow and breed conveniently. In rainy days, the overflowing rainwater 3 firstly passes through the greening protective belt 8 under the action of the terrain difference, silt and dead leaves in the overflowing rainwater 3 are intercepted by plants on the greening protective belt 8, and part of the overflowing rainwater 3 is absorbed by the roots of the plants to achieve a certain water storage effect. In addition, the greening protective belt 8 also improves the ecological landscape effect and the habitat diversity at the periphery of the river channel 2.

Set up one section overflow slope 9 between afforestation protecting band 8 and the channel 1, overflow slope 9 bottom and the channel wall body 10 zonulae occludens of channel 1 one side of intaking, the gap is not kept at the junction, overflow slope 9 sets up on original soil layer 17 or revetment 18, overflow slope 9 is laid by cobble and concrete mixture and is formed, overflow slope 9 slope is 0.3-1. After being intercepted by the greening protective belt 8, the overflowing rainwater 3 flows down along the slope of the overflowing slope 9, the flow speed is reduced, and the hydraulic potential energy is reduced.

As shown in fig. 3, 6 and 8, the water inlet assembly comprises a plurality of overflow ports 14 arranged inside the channel wall 10 on the water inlet side, the overflow ports 14 are arranged at the lower part of the channel coping 13, the height of the bottoms of the overflow ports 14 is equal to or higher than that of the overflow slopes 9, and the overflow rainwater 3 enters the channel 1 through the overflow ports 14 after being dissipated by the overflow slopes 9; set up the interception subassembly in the mouth 14 overflows, the interception subassembly is including setting up the interception groove 28 inside the mouth 14 overflows, be provided with interception fence 27 in the interception groove 28, interception fence 27 adopts criss-cross timber or steel preparation to form, interception fence 27 is used for intercepting ground rubbish such as deadwood, wrapping bag that overflow rainwater 3 carried, prevents that it from getting into, blocks up channel 1.

According to the difference of the characteristics of the water coming from the urban river and the rural river, the utility model provides two intercepting and guiding systems, namely an embodiment 1 suitable for rural non-point source pollution treatment and an embodiment 2 suitable for urban overflow rainwater treatment.

Example 1

As shown in fig. 1, 2, 3, 4 and 8, a channel intercepting system constructed for rural non-point source pollution features intercepts a plurality of incoming water paths of rural non-point source pollution, and centralizes the scattered incoming water paths. In embodiment 1, the subassembly of intaking is still including setting up drainage channel 5, last level wetland processing unit outlet pipe 15 and the integration treatment facility outlet pipe 16 of the channel 1 one side of intaking, and channel 1 passes through at this moment the overflow mouth 14 receives overflow rainwater 3, receives the rainwater and sewage in local rural area through drainage channel 5, receives the play water of last level wetland processing unit 4 through last level wetland processing unit outlet pipe 15, receives the tail water of integration treatment facility 6 through integration treatment facility outlet pipe 16, channel 1 is with all incoming water conservancy diversion to next level wetland processing unit 7 further treatments of receiving. The outlet of the drainage channel 5 is provided with the interception grating 19, the inclination angle of the interception grating 19 is 30-90 degrees, the interception grating can flexibly adapt to the amount of the incoming water, the contact area between the interception grating 19 and the water flow is changed by changing the inclination angle, the dirt interception effect is ensured, and meanwhile, the stress of the interception grating 19 is reduced. At this moment, limited by the topography, the rambling slope 9 sets up above the original soil layer 17, simultaneously, set up a pavement 12 on the revetment 18 of river course 2 and the original soil layer 17, pavement 12 adopts the fine gravel to lay and forms for the free time of local resident walks and vwatchs the scenery. The connection slope 11 is adopted between the footpath 12 and the channel wall 10 on the water outlet side for transition.

In embodiment 1, the drainage assembly comprises a water pumping facility 22 arranged on the water outlet side of the channel 1 and a discharge port 23 communicated with the channel 1, wherein an electric gate 24 is arranged at the tail end of the discharge port 23, and the discharge port 23 is higher than the normal water level of the river channel 2.

During specific operation, the operation conditions are divided into three operation conditions. Under the condition of a first working condition, under a small and medium rain condition, the channel 1 respectively receives a small amount of overflow rainwater 3 intercepted by the greening protective belt 8 and dissipated by the overflow slope 9, rainwater and sewage of the drainage channel 5, effluent of the upper-stage wetland treatment unit 4 and tail water of the integrated treatment facility 6, the incoming water is in the receiving load range of the channel 1, and then the incoming water is orderly guided to the lower-stage wetland treatment unit 7 for centralized treatment; under the condition of heavy rain, the channel 1 respectively receives a large amount of overflow rainwater 3 intercepted by the greening protective belt 8 and dissipated by the overflow slope 9, rainwater sewage of the drainage channel 5, effluent of the previous-stage wetland treatment unit 4 and tail water of the integrated treatment facility 6, and the incoming water is in the receiving load range of the channel 1, but the treatment load is exceeded if all the incoming water is guided to the next-stage wetland treatment unit 7 at the moment, so that the electric gate 24 is opened, a part of the incoming water flows into the river channel 2 from the drainage port 23, the water passing pressure of the channel 1 is reduced, and the other part of the incoming water is orderly guided to the next-stage wetland treatment unit 7 through the channel 1 for treatment; under the condition of heavy rain, the channel 1 respectively receives excessive overflowing rainwater 3 intercepted by the greening protective belt 8 and dissipated by the overflowing slope 9, rainwater and sewage of the drainage channel 5, effluent of the upper-stage wetland treatment unit 4 and tail water of the integrated treatment facility 6, the incoming water exceeds the receiving load of the channel 1 and the treatment load of the lower-stage artificial wetland treatment unit 7, at the moment, the water pumping facility 22 is started while the electric gate 24 is opened to drain water, water in the channel 1 is pumped to the river channel 2, the channel 1 and the artificial wetland system are protected, and waterlogging caused by untimely drainage of the channel 1 is prevented. When the water level height in the river channel 2 exceeds the height of the discharge port 23, the electric gate 24 is closed in time, and the situation that the residential areas in the low-lying areas on the side of the river channel 2 are subjected to waterlogging disasters due to the fact that river water flows backwards is prevented.

Example 2

As shown in fig. 5, 6, 7, 8 and 9, the interception system constructed for the urban non-point source pollution features intercepts the overflowing rainwater 3 at the side of the urban river channel, and guides the overflowing rainwater 3 to the artificial wetland system for treatment, so as to prevent the overflowing rainwater 3 from entering the river channel 2 and polluting the water body of the river channel 2. In embodiment 2, the channel 1 is arranged close to the river channel 2, so that the channel 1 can automatically drain water quickly, and the energy consumption of drainage is reduced. At this time, the rambling slope 9 is set on the revetment 18 and the footpath 12 is set on the raw soil layer 17 adjacent to the greening belt 8, limited by the terrain.

In embodiment 2, the drainage assembly includes a plurality of drainage holes 26 disposed on the upper portion of the channel wall 10 on the water outlet side and a flood discharge pipe 25 disposed inside the channel 1, the drainage holes 26 are equidistantly arranged on the upper portion of the channel wall 10, and the drainage holes 26 are circular drainage holes to reduce the drainage resistance. The minimum set height of the drainage holes 26 is far greater than the historical highest water level height of the local river channel 2, and the maximum set height of the drainage holes 26 is smaller than the road surface height, so that road water accumulation caused by the fact that water in the channel 1 flows back to the road surface through the overflowing port 14 after being too high is prevented. An electric gate 24 is installed at the end of the flood discharge pipe 25, and the flood discharge pipe 25 opens the electric gate 24 only in case of heavy rain.

During specific operation, the operation conditions are divided into three operation conditions. Under the condition of a first working condition, under a small and medium rain condition, the channel 1 receives a small amount of overflow rainwater 3 which is intercepted by the greening protective belt 8 and energy-dissipated by the overflow slope 9 in sequence, the incoming water is in the receiving load range of the channel 1, and the channel 1 guides the incoming water to the next-stage artificial wetland processing unit 7 for processing; under the condition of heavy rain, the channel 1 receives a large amount of overflow rainwater 3 which is intercepted by the greening protective belt 8 and energy-dissipated by the overflow slope 9 in sequence, the incoming water is slightly higher than the receiving load of the channel 1, the height of the water level in the channel 1 exceeds the height of the drainage hole 26 at the moment, and the incoming water exceeds the processing load of the artificial wetland system, so that the excessive incoming water is drained into the river channel 2 through the drainage hole 26, the channel wall 10 is prevented from being damaged due to overlarge water pressure, and the rest of the incoming water is orderly guided to the next-stage artificial wetland processing unit 7 through the channel 1 for processing; under the condition of heavy rain, the channel 1 receives excessive overflowing rainwater 3 which is intercepted by the greening protective belt 8 and dissipated energy by the overflowing slope 9 in sequence, the incoming water far exceeds the receiving load of the channel 1, and at the moment, the incoming water entering the channel 1 cannot be discharged in time only through the drainage hole 26, so that the electric gate 24 is opened, the excessive incoming water is discharged through the flood discharge pipe 25, the water passing pressure of the channel 1 is reduced, and the channel 1 and the artificial wetland system are protected. When the water level of the river channel 2 exceeds the height of the flood discharge pipe 25, the electric gate 24 is closed to prevent the river water from flowing backward into the channel 1.

In conclusion, the channel intercepting and guiding system can effectively solve the problem of non-point source pollution in cities and rural areas, carry out intercepting and guiding treatment on the non-point source pollution in the cities and the non-point source pollution in the rural areas and solve the treatment problem caused by the factors of complex non-point source pollution sources, large water quality and water quantity change and the like; road surface garbage carried by overflowing rainwater is effectively intercepted, and energy dissipation is carried out on water coming in rainy seasons to reduce damage of water pressure impact on channel walls; meanwhile, the system has the functions of water storage in rainy seasons and ecological landscape, and can effectively prevent water and soil loss and flood disasters.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides a system is cut and led to non-point source pollution channel in city and rural area, the channel is cut and is led the system and face river course (2) and establish, its characterized in that, the channel is cut and is led the system including channel (1), overflow slope (9), afforestation protecting band (8), subassembly and drainage component of intaking, channel (1) is including channel wall body (10) and channel bed course, channel (1) sets up between overflow slope (9) and river course (2), comes from the rainwater of overflow slope (9) and afforestation protecting band (8) gets into channel (1) through the subassembly of intaking, water in channel (1) passes through drainage component and gets into river course (2), water in channel (1) still gets into next level wetland processing unit (7) through channel (1) end.

2. The canal intercepting system according to claim 1, wherein the top of the canal wall (10) of the canal (1) is provided with a canal coping (13) for increasing the strength of the canal wall (10).

3. The canal intercepting system of claim 1, wherein the bottom of the overflowing slope (9) is connected with a canal wall (10) on the water inlet side of the canal (1), the overflowing slope (9) is formed by laying pebbles and concrete in a mixed manner, and the gradient of the overflowing slope (9) is 0.3-1.

4. The channel intercepting system of claim 1, wherein the top of the overflowing slope (9) is connected with a greening protective belt (8), the greening protective belt (8) is arranged above a raw soil layer (17) which is beneficial to plant growth and breeding, and the greening protective belt (8) is used for planting various terrestrial plants according to a scientific collocation principle.

5. The canal intercepting system of claim 1, wherein the water inlet assembly is arranged on the water inlet side of the canal (1) and comprises a plurality of overflow ports (14) arranged inside a canal wall (10) on the water inlet side of the canal (1), the bottom height of each overflow port (14) is equal to or higher than the bottom height of each overflow slope (9), and each overflow port (14) receives overflow rainwater (3) flowing down from each overflow slope (9).

6. The canal intercepting and guiding system of claim 5, wherein an intercepting component for intercepting sundries is arranged at the overflow port (14), and the intercepting component comprises an intercepting groove (28) arranged in the overflow port (14) and an intercepting fence (27) arranged in the intercepting groove (28).

7. The canal intercepting system of claim 1, wherein the water inlet assembly further comprises a drainage canal (5), a water outlet pipe (15) of the upper stage wetland treatment unit and a water outlet pipe (16) of the integrated treatment facility, and an outlet of the drainage canal (5) is provided with an intercepting grid (19) with an inclination angle of 30-90 degrees.

8. The canal intercepting system of claim 1, wherein the drainage assembly is disposed on the water outlet side of the canal (1) and comprises a discharge port (23) and a water pumping facility (22), the discharge port (23) is communicated with the river (2), and the tail end of the discharge port (23) is provided with an electric gate (24).

9. The canal intercepting system of claim 1, wherein the drainage assembly further comprises a flood discharge pipe (25) and a plurality of circular drainage holes (26), the flood discharge pipe (25) opens into the river (2), and an electric gate (24) is provided at the end of the flood discharge pipe (25).

10. The channel intercepting system according to claim 9, wherein the drainage holes (26) are provided inside the channel wall (10) at the outlet side of the channel (1), the minimum set height of the drainage holes (26) is greater than the historical maximum water level height of the local river (2), and the maximum set height of the drainage holes (26) is less than the road surface height.

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