Construction method of urban street ecological open channel system

Abstract

This invention provides a construction method for an ecological open channel system in urban streets and alleys, including steps such as constructing a sedimentation and filtration system, constructing a rainwater and sewage diversion system, and constructing a water resource collection system. This invention can achieve multiple benefits, including reducing urban flooding, improving the urban microclimate, and enhancing the urban landscape.

Description

Technical Field

[0001] This invention relates to the field of water resource utilization, specifically a construction method for an ecological open channel system in urban streets and alleys. Background Technology

[0002] With the continuous progress of urban construction, and by leveraging the advancement of urban water conservancy projects, water features will be integrated with the construction of urban streets and alleys to promote water resource management and protection, improve water use efficiency and water resource utilization rate, and at the same time strengthen water pollution control and water environment protection. Not only should water resources be used sustainably, but ecological open channels should also be introduced into streets and alleys to create ecological street and alley open channels.

[0003] The existing urban ecological open channels have many problems, such as water source issues, channel design issues, and channel management issues, resulting in water quality deterioration, breeding of mosquitoes and bacteria, unpleasant odors, flooding, and drying up. Summary of the Invention

[0004] In view of the above-mentioned prior art, the present invention proposes a construction method for an ecological open channel system in urban streets and alleys.

[0005] The present invention provides a construction method for an ecological open channel system in urban streets and alleys, comprising the following steps:

[0006] S1. Construction of sedimentation and filtration system: The sedimentation and filtration system includes a pond and a microfilter. First, a first pipe section, a second pipe section and a third pipe section are buried. Then, the pond is constructed and the microfilter is constructed. The microfilter is connected to the municipal stormwater pipe network through the first pipe section, and the pond is connected to the microfilter through the second pipe section.

[0007] S2. Construction of a rainwater and sewage separation system: First, construct the fourth pipe section to connect the sewage from the residential area, factory area, and commercial area with the municipal sewage network; then construct the centralized management area for centralized fish management, which has the functions of heating, oxygenation, and theft prevention. The centralized management area includes a management room and an equipment room; next, construct the sleeping area to provide sleeping space for the fish. The sleeping area includes linear ditches and open channels, which are connected to the sides by several fifth pipe sections. The outlet of the linear ditches is connected to the pond, and the outlet of the open channels is connected to the pond through the third pipe section; finally, construct a vehicle passage and a pedestrian passage on the top of the open channels.

[0008] S3. Construction water resource collection system; water resources come from rivers, streams, tap water, and groundwater. The water resource collection system includes a nitrification tank. The outlet of the nitrification tank is connected to a regulating tank. The outlet of the regulating tank is connected to a manhole via an ultraviolet disinfection device. The outlet of the manhole is connected to the inlet of the open channel. The outlet of the regulating tank is also connected to the municipal stormwater pipe network.

[0009] Preferably, in S1, the first pipe section, the second pipe section, and the third pipe section are all made of ductile iron pipe.

[0010] Preferably, in S1, the bottom wall of the pond, from bottom to top, consists of a compacted soil layer, two layers of geotextile, a stone layer with a diameter of 60-80mm, two layers of geotextile, a stone layer with a diameter of 20-30mm, two layers of geotextile, a planting soil layer, and an aquatic plant seed layer; the perimeter wall of the pond, from top to bottom, consists of a compacted soil layer, a graded crushed stone layer, and a reinforced concrete pool wall. The outer end of the reinforced concrete pool wall is provided with a cement mortar layer, and the inside of the cement mortar layer is provided with a stainless steel mesh. The inner end of the reinforced concrete pool wall is provided with side granite, and the upper end of the reinforced concrete pool wall and the side granite are jointly provided with a top granite.

[0011] Preferably, in S1, the bottom of the microfilter is provided with a microfilter support, and both the microfilter and the microfilter support are located inside the microfilter base. The microfilter base consists of, from bottom to top, a compacted soil layer, a graded crushed stone layer, a reinforced concrete base wall, and an invisible manhole cover.

[0012] Preferably, in S2, the management room consists of, from bottom to top, a compacted soil layer, a graded crushed stone layer, and a first reinforced concrete wall. The inner end of the first reinforced concrete wall is provided with rough-surfaced sesame gray granite. Inside the first reinforced concrete wall, above the rough-surfaced sesame gray granite, from bottom to top, are, a layer of stones with a diameter of 60-80mm, a waterproof blanket, a layer of stones with a diameter of 20-30mm, and aquatic plant seeds. A wire roller shutter door is provided on the first reinforced concrete wall. A water quality sensor, a water level sensor, and a data transmitter are provided inside the first reinforced concrete wall.

[0013] Preferably, in S2, the equipment room consists of, from bottom to top, a compacted soil layer, a graded crushed stone layer, and a second reinforced concrete wall. A heater and an oxygen generator are installed inside the second reinforced concrete wall. The heater is connected to the interior of the first reinforced concrete wall via an inlet pipe and an outlet pipe, respectively. The oxygen generator is connected to the interior of the first reinforced concrete wall via an air inlet pipe. Both the inlet and outlet pipes are stainless steel pipes, and the air inlet pipe is a PVC pipe. A concealed manhole cover is installed on the top of the second reinforced concrete wall.

[0014] Preferably, in S2, the linear ditch consists of, from bottom to top, a compacted soil layer, a graded crushed stone layer, a reinforced concrete ditch foundation, a cement mortar layer, a composite resin linear trench, and a stainless steel cover plate.

[0015] Preferably, in S2, the open channel consists of, from bottom to top, a compacted soil layer, a graded crushed stone layer, a reinforced concrete bottom open channel foundation, and a rough-surfaced sesame gray granite channel wall. A cement mortar layer is provided at the outer end of the rough-surfaced sesame gray granite channel wall, and a waterproof blanket is provided at the outer end of the cement mortar layer. Aquatic plant seeds and a water level sensor are provided inside the rough-surfaced sesame gray granite channel wall. The rough-surfaced sesame gray granite channel wall is connected to the composite resin linear trench through a fifth pipe section, which is a PVC pipe.

[0016] Preferably, in S3, the ultraviolet disinfection device consists of, from bottom to top, a compacted soil layer, a graded crushed stone layer, and a third reinforced concrete wall. The inner end of the third reinforced concrete wall is provided with a cement mortar layer. A cabinet support is provided inside the third reinforced concrete wall, and a cabinet is provided on the cabinet support. The cabinet connects the regulating pool and the inspection well. An ultraviolet disinfection device is provided inside the cabinet, and the ultraviolet disinfection device has a control valve. A concealed cover is provided on the top of the third reinforced concrete wall.

[0017] Preferably, in S3, the inspection well consists of a compacted soil layer, a graded crushed stone layer, and a reinforced concrete well wall from bottom to top, and the top of the reinforced concrete well wall is provided with a concealed cover plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The present invention provides a construction method for an urban street ecological open channel system. By constructing an ecological open channel, rainwater from hard surfaces such as roads, green spaces, groundwater, squares, and sidewalks in the city is collected, filtered, and purified, making it a resource water available for fish, plant growth, and landscape water bodies. At the same time, it can also reduce urban flooding, improve the urban microclimate, and enhance the urban landscape.

[0020] 2. This invention introduces qualified water sources through a water resource collection system, while also considering the issues of flood control and water replenishment; a rainwater and sewage separation system sends all sewage into municipal sewage pipes, ensuring that the ecological open channel is not polluted; an ecological open channel system is proposed, combining rainwater ditches and open channels, which can meet the requirements of ecological circulation as well as the needs of pedestrians, vehicles, and ornamental fish; through a sedimentation and filtration system, water meeting the requirements of multiple water quality standards is discharged into municipal rainwater pipes, avoiding water quality deterioration, breeding of mosquitoes and bacteria, unpleasant odors, flooding, and drying up.

[0021] 3. The construction method of this invention is mature, with factory processing and on-site assembly construction, saving a lot of project costs and construction time, and realizing rapid construction. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the pond and microfiltration machine in an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the centralized management area in an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the linear ditch and open channel in an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the ultraviolet disinfection device and the inspection well in an embodiment of the present invention.

[0027] In the diagram: 1. Pond; 2. Microfilter; 3. First pipe section; 4. Second pipe section; 5. Third pipe section; 6. Municipal stormwater drainage network; 7. Planting soil layer; 8. Aquatic plant seed layer; 9. Reinforced concrete pool wall; 10. Reinforced concrete machine base wall; 11. Centralized management area; 12. Management room; 13. Equipment room; 14. Linear ditch; 15. Open channel; 16. Fifth pipe section; 17. Second reinforced concrete wall; 18. Heater; 19. Oxygen generator; 20. Inlet pipe; 21. Outlet pipe; 22. Air inlet pipe; 23. Reinforced concrete ditch foundation; 24. Composite resin linear trench; 25. Reinforced concrete bottom open channel foundation; 26. Nitrification tank; 27. Equalization tank; 28. Ultraviolet disinfection device; 29. ​​Inspection well; 30. Third reinforced concrete wall; 31. Chassis support; 32. Chassis; 33. Ultraviolet disinfection device; 34. Control valve; 35. Reinforced concrete well wall. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations. Example

[0029] A construction method for an urban street and alley ecological open channel system includes the following steps:

[0030] S1. Construction sedimentation and filtration system: such as Figure 1 As shown, the sedimentation and filtration system includes a pond 1 and a microfilter 2. First, a first pipe section 3, a second pipe section 4, and a third pipe section 5 are laid. Then, pond 1 is constructed, followed by the microfilter 2. The first pipe section 3 connects the microfilter 2 to the municipal stormwater network 6, and the second pipe section 4 connects pond 1 to the microfilter 2. During the process of water entering the municipal stormwater network 6 from pond 1, the microfilter 2 removes suspended particles, silt, bacteria, and other minute impurities from the water to meet the water quality requirements discharged into the municipal stormwater network 6.

[0031] Among them, the first pipe section 3, the second pipe section 4, and the third pipe section 5 are all made of ductile iron pipe.

[0032] like Figure 2 As shown, the bottom wall of pond 1 consists of, from bottom to top, a compacted soil layer (compaction coefficient > 90%), two layers of geotextile, a stone layer with a diameter of 60-80mm, two layers of geotextile, a stone layer with a diameter of 20-30mm, two layers of geotextile, a planting soil layer 7, and an aquatic plant seed layer 8. The perimeter wall of pond 1 consists of, from top to bottom, a compacted soil layer (compaction coefficient > 90%), a graded crushed stone layer, and a reinforced concrete pool wall 9 (with 8% waterproofing agent added). The outer end of the reinforced concrete pool wall 9 is provided with a cement mortar layer, and the inside of the cement mortar layer is provided with a stainless steel mesh. The inner end of the reinforced concrete pool wall 9 is provided with side granite, and the upper end of the reinforced concrete pool wall 9 and the side granite are jointly provided with a top granite.

[0033] like Figure 2 As shown, the bottom of the microfilter 2 is provided with a microfilter support. Both the microfilter and the microfilter support are located inside the microfilter base. The microfilter base consists of, from bottom to top, a compacted soil layer (compaction coefficient > 90%), a graded crushed stone layer, a reinforced concrete base wall 10 (with 8% waterproofing agent added), and an invisible manhole cover.

[0034] S2. Construction rainwater and sewage separation system: such as Figure 1 As shown, the fourth pipe section is constructed first to connect the sewage and municipal sewage networks of the residential area, factory area, and commercial area; then, the centralized management area 11 is constructed for centralized management of fish, with functions of heating, oxygenation, and theft prevention. The centralized management area 11 includes a management room 12 and an equipment room 13; next, the sleeping area is constructed to provide sleeping space for fish. The sleeping area includes a linear ditch 14 and an open channel 15. The linear ditch 14 and the open channel 15 are connected to the side via several fifth pipe sections 16. The outlet of the linear ditch 14 is connected to the pond 1, and the outlet of the open channel 15 is connected to the pond 1 via a third pipe section 5; finally, a vehicle passage and a pedestrian passage are constructed on the top of the open channel 15.

[0035] Among them, such as Figure 3 As shown, the management room 12 consists of, from bottom to top, a compacted soil layer (compaction coefficient > 90%), a graded crushed stone layer, and a first reinforced concrete wall 16 (with 8% waterproofing agent added). The inner end of the first reinforced concrete wall 16 is provided with rough-surfaced sesame gray granite. Inside the first reinforced concrete wall 16, above the rough-surfaced sesame gray granite, from bottom to top, are a layer of stones with a diameter of 60-80mm, a waterproof blanket, a layer of stones with a diameter of 20-30mm, and aquatic plant seeds. A wire roller shutter door is installed on the first reinforced concrete wall 16. A water quality sensor, a water level sensor, and a data transmitter are installed inside the first reinforced concrete wall 16.

[0036] like Figure 3 As shown, the equipment room 13 consists of, from bottom to top, a compacted soil layer (compaction coefficient > 90%), a graded crushed stone layer, and a second reinforced concrete wall 17. The second reinforced concrete wall 17 houses a heater 18 and an oxygen generator 19. The heater 18 is connected to the interior of the first reinforced concrete wall 16 via an inlet pipe 20 and an outlet pipe 21, respectively. The oxygen generator 19 is connected to the interior of the first reinforced concrete wall 16 via an air inlet pipe 22. Both the inlet pipe 20 and the outlet pipe 21 are stainless steel pipes, while the air inlet pipe 22 is a PVC pipe. A concealed manhole cover is installed on the top of the second reinforced concrete wall 17.

[0037] like Figure 4 As shown, the linear drainage ditch 14 consists of, from bottom to top, a compacted soil layer (compaction coefficient > 90%), a graded crushed stone layer, a reinforced concrete drainage ditch foundation 23, a cement mortar layer (10% building waterproofing adhesive), several composite resin linear channels 24, and a stainless steel cover. The composite resin linear channels 24 are installed every 30 meters to filter sand and mud from rainwater, allowing the rest to flow into the open channel 15.

[0038] like Figure 4 As shown, the open channel 15 consists of, from bottom to top, a compacted soil layer (compaction coefficient > 90%), a graded crushed stone layer, a reinforced concrete bottom open channel foundation 25, and a rough-surfaced sesame gray granite channel wall. A cement mortar layer is provided at the outer end of the rough-surfaced sesame gray granite channel wall, and a waterproof blanket is provided at the outer end of the cement mortar layer. Aquatic plant seeds and a water level sensor are provided inside the rough-surfaced sesame gray granite channel wall. The rough-surfaced sesame gray granite channel wall is connected to the composite resin linear trench 24 through a fifth pipe section 16, which is a PVC pipe.

[0039] S3, Construction water resource collection system; such as Figure 1 As shown, the water resources come from rivers, streams, tap water, and groundwater. The water resource collection system includes a nitrification tank 26, the outlet of which is connected to a regulating tank 27. The outlet of the regulating tank 27 is connected to a manhole 29 via an ultraviolet disinfection device 28. The outlet of the manhole 29 is connected to the inlet of an open channel 15. The outlet of the regulating tank 27 is also connected to the municipal stormwater network 6. The system removes ammonia nitrogen, heavy metals, and fluoride from the water, ensuring a flow velocity of 0.1-3 m / s, sufficient oxygen, and adequate water level in the open channel 15, thus ensuring the symbiotic relationship between plants and fish. The main function of the manhole 29 is sedimentation and inspection / maintenance.

[0040] Among them, such as Figure 5As shown, the ultraviolet disinfection device 28 consists of, from bottom to top, a compacted soil layer (compaction coefficient > 90%), a graded crushed stone layer, and a third reinforced concrete wall 30 (with 8% waterproofing agent added). The inner end of the third reinforced concrete wall 30 is provided with a cement mortar layer. A cabinet support 31 is installed inside the third reinforced concrete wall 30, and a cabinet 32 ​​is installed on the cabinet support 31. The cabinet 32 ​​connects the regulating pool 27 and the inspection well 29. An ultraviolet disinfection device 33 is installed inside the cabinet 32. The ultraviolet disinfection device 33 has a control valve 34. A concealed cover is installed on the top of the third reinforced concrete wall 30.

[0041] like Figure 5 As shown, from bottom to top, the inspection well 29 consists of a compacted soil layer (compaction coefficient > 90%), a graded crushed stone layer, and a reinforced concrete well wall 35 (with 8% waterproofing agent added). The top of the reinforced concrete well wall 35 is equipped with a concealed cover plate.

[0042] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structures made using the contents of the present invention specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of the present invention.

Claims

1. A construction method for an ecological open channel system in urban streets and alleys, characterized in that, Includes the following steps: S1. Construction of sedimentation and filtration system: The sedimentation and filtration system includes a pond and a microfilter. First, a first pipe section, a second pipe section and a third pipe section are buried. Then, the pond is constructed and the microfilter is constructed. The microfilter is connected to the municipal stormwater pipe network through the first pipe section, and the pond is connected to the microfilter through the second pipe section. S2. Construction of a rainwater and sewage separation system: First, construct the fourth pipe section to connect the sewage from the residential area, factory area, and commercial area with the municipal sewage network; then construct the centralized management area for centralized fish management, which has the functions of heating, oxygenation, and theft prevention. The centralized management area includes a management room and an equipment room; next, construct the sleeping area to provide sleeping space for the fish. The sleeping area includes linear ditches and open channels, which are connected to the sides by several fifth pipe sections. The outlet of the linear ditches is connected to the pond, and the outlet of the open channels is connected to the pond through the third pipe section; finally, construct a vehicle passage and a pedestrian passage on the top of the open channels. S3. Construction water resource collection system; water resources come from rivers, streams, tap water, and groundwater. The water resource collection system includes a nitrification tank. The outlet of the nitrification tank is connected to a regulating tank. The outlet of the regulating tank is connected to a manhole via an ultraviolet disinfection device. The outlet of the manhole is connected to the inlet of the open channel. The outlet of the regulating tank is also connected to the municipal stormwater pipe network.

2. The construction method of the urban street and alley ecological open channel system as described in claim 1, characterized in that, In S1, the first pipe section, the second pipe section, and the third pipe section are all made of ductile iron pipe.

3. The construction method of the urban street and alley ecological open channel system as described in claim 1 or 2, characterized in that, In S1, the bottom wall of the pond, from bottom to top, consists of a compacted soil layer, two layers of geotextile, a stone layer with a diameter of 60-80mm, two layers of geotextile, a stone layer with a diameter of 20-30mm, two layers of geotextile, a planting soil layer, and an aquatic plant seed layer. The perimeter wall of the pond, from top to bottom, consists of a compacted soil layer, a graded crushed stone layer, and a reinforced concrete pool wall. The outer end of the reinforced concrete pool wall is provided with a cement mortar layer, and the inside of the cement mortar layer is provided with a stainless steel mesh. The inner end of the reinforced concrete pool wall is provided with side granite, and the upper end of the reinforced concrete pool wall and the side granite are jointly provided with a top granite.

4. The construction method of the urban street and alley ecological open channel system as described in claim 1 or 2, characterized in that, In S1, a microfilter support is provided at the bottom of the microfilter. Both the microfilter and the microfilter support are located inside the microfilter base. The microfilter base consists of, from bottom to top, a compacted soil layer, a graded crushed stone layer, a reinforced concrete base wall, and an invisible manhole cover.

5. The construction method of the urban street and alley ecological open channel system as described in claim 1 or 2, characterized in that, In S2, the management room consists of, from bottom to top, a compacted soil layer, a graded crushed stone layer, and a first reinforced concrete wall. The inner end of the first reinforced concrete wall is provided with rough-surfaced sesame gray granite. Inside the first reinforced concrete wall, above the rough-surfaced sesame gray granite, from bottom to top, are layers of stones with a diameter of 60-80mm, a waterproof blanket, layers of stones with a diameter of 20-30mm, and aquatic plant seeds. A wire roller shutter door is installed on the first reinforced concrete wall. A water quality sensor, a water level sensor, and a data transmitter are installed inside the first reinforced concrete wall.

6. The construction method of the urban street and alley ecological open channel system as described in claim 5, characterized in that, In S2, the equipment room consists of, from bottom to top, a compacted soil layer, a graded crushed stone layer, and a second reinforced concrete wall. A heater and an oxygen generator are installed inside the second reinforced concrete wall. The heater is connected to the interior of the first reinforced concrete wall via an inlet pipe and an outlet pipe, respectively. The oxygen generator is connected to the interior of the first reinforced concrete wall via an air inlet pipe. Both the inlet and outlet pipes are stainless steel, and the air inlet pipe is a PVC pipe. A concealed manhole cover is installed on the top of the second reinforced concrete wall.

7. The construction method of the urban street and alley ecological open channel system as described in claim 1 or 2, characterized in that, In S2, the linear ditch consists of, from bottom to top, a compacted soil layer, a graded crushed stone layer, a reinforced concrete ditch foundation, a cement mortar layer, a composite resin linear trench, and a stainless steel cover plate.

8. The construction method of the urban street and alley ecological open channel system as described in claim 7, characterized in that, In S2, the open channel consists of, from bottom to top, a compacted soil layer, a graded crushed stone layer, a reinforced concrete bottom open channel foundation, and a rough-surfaced sesame gray granite channel wall. A cement mortar layer is provided at the outer end of the rough-surfaced sesame gray granite channel wall, and a waterproof blanket is provided at the outer end of the cement mortar layer. Aquatic plant seeds and a water level sensor are provided inside the rough-surfaced sesame gray granite channel wall. The rough-surfaced sesame gray granite channel wall is connected to the composite resin linear trench through a fifth pipe section, which is a PVC pipe.

9. The construction method of the urban street and alley ecological open channel system as described in claim 1 or 2, characterized in that, In S3, the ultraviolet disinfection device consists of, from bottom to top, a compacted soil layer, a graded crushed stone layer, and a third reinforced concrete wall. The inner end of the third reinforced concrete wall is provided with a cement mortar layer. A cabinet support is provided inside the third reinforced concrete wall, and a cabinet is provided on the cabinet support. The cabinet connects the regulating pool and the inspection well. An ultraviolet disinfection device is provided inside the cabinet, and the ultraviolet disinfection device has a control valve. A concealed cover is provided on the top of the third reinforced concrete wall.

10. The construction method of the urban street and alley ecological open channel system as described in claim 1 or 2, characterized in that, In S3, the inspection well consists of a compacted soil layer, a graded crushed stone layer, and a reinforced concrete well wall from bottom to top, with a concealed cover plate installed on the top of the reinforced concrete well wall.

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