An ecological waterfront with self-controlled pollution along the river

Abstract

An ecological waterfront with self-controlled pollution along the river includes an inlet section, a standard section, an outlet section, and a discharge section. The storage and sewage interception functions are set in the same structure as the ecological waterfront, with an ecological shallow water wetland on the inside, a storage area and a sewage interception area in the middle, and sponge facilities along the river on the top. According to the pollution control needs of river channel regulation, such as CSOs storage, initial rain storage, river channel storage, sewage interception, etc., the storage area and sewage interception area of ​​each section and their water inlet control facilities are selected and assembled in a flexible configuration, which is easy to implement. The side wall of the storage area is used as a river retaining wall, which can be implemented within the blue line of the river without the need for additional land. It can be constructed simultaneously with the excavation of the revetment. The function of pollution control along the river can be achieved through the ecological waterfront structure itself, which is of great significance in solving the problems of land shortage, construction difficulty, low efficiency and high cost of pollution control projects in river channel regulation.

Description

Technical Field

[0001] The present invention belongs to the field of comprehensive improvement of urban water environment, and relates to an ecological water bank with both non-point source pollution control and sewage interception functions. Background Art

[0002] In the comprehensive improvement of urban water environment, overflow pollution from the combined system, initial rainwater from the separate system and direct discharge of sewage are the main sources of pollution in rivers.

[0003] Conventional pollution control measures include combined sewer overflow (CSO) storage ponds, first-fall storage ponds, and intercepting pipes. As an effective measure for controlling CSO and first-fall rainwater pollution, storage ponds are widely used both domestically and internationally. However, they require separate land, often making it difficult to construct large-scale storage facilities due to limited land availability, or difficult to implement due to the difficulty of engineering construction and high investment. Sewage intercepting pipes constructed along rivers are often used to intercept directly discharged sewage or combined sewerage during dry seasons. However, for tributary rivers, the traditional method of constructing an intercepting pipe that runs the entire length of the river requires crossing existing roads. The intercepting pipe is buried too deep, making it difficult to connect to the downstream intercepting main pipe, making construction difficult and the interception efficiency poor.

[0004] In the current comprehensive water environment improvement project, how to comprehensively solve the problems of land shortage, construction difficulty, low efficiency and high cost of pollution control projects in river improvement is a very novel topic. Summary of the Invention

[0005] In view of the above problems, the present invention provides an ecological waterfront with self-control of pollution along the river.

[0006] The purpose of the present invention can be achieved through the following technical solutions: an ecological waterfront with self-controlled pollution along the river, comprising an inlet section, a standard section, an outlet section, and a discharge section, wherein an inlet section, several standard sections, an outlet section, several standard sections, and an inlet section are sequentially connected along the river bank, and the discharge section is connected to the land side of the outlet section; the inlet section is sequentially divided into a first storage area and a first sewage interception area in the direction of the river toward the land, and a flushing device and an inlet gate are provided on the inner side wall of the first storage area close to the river; the standard section is sequentially divided into a first ecological shallow water wetland area, a second storage area, and a second sewage interception area in the direction of the river toward the land; the outlet section is sequentially divided into a second ecological shallow water wetland area in the direction of the river toward the land The bottom plate of the outlet section is partially dropped to the bottom and is provided with a sump. A hole is opened on the side wall between the third storage area and the third sewage interception area in the dropped bottom, and a water outlet gate is provided on the side of the third storage area; the discharge section is divided into a pump well area and a valve well. A sewage pump is provided in the pump well area, and the valve well is provided with a discharge pipe. The sewage pump is connected to the discharge pipe through the sewage pump outlet pipe; wherein, the first storage area of ​​the water inlet section, the second storage area of ​​the standard section, and the third storage area of ​​the water outlet section are connected and their inner side walls serve as river retaining walls, and the first sewage interception area of ​​the water inlet section, the second sewage interception area of ​​the standard section, the third sewage interception area of ​​the water outlet section, and the pump well area of ​​the discharge section are connected.

[0007] Preferably, the water inlet section and the standard section, the standard section and the water outlet section, and the water outlet section and the drain section are connected respectively by embedded steel-edged rubber waterstops and caulking sealants, and shear rods are provided in the walls at the connections.

[0008] Preferably, water collecting grooves are respectively provided on the bottom plates of the first regulating and storing area and the first sewage intercepting area of ​​the water inlet section, the second regulating and storing area and the second sewage intercepting area of ​​the standard section, and the third regulating and storing area and the third sewage intercepting area of ​​the water outlet section.

[0009] Preferably, water inlet pipes / culverts are respectively provided on the outer side walls close to the land of the first regulating and storage area of ​​the water inlet section and the second regulating and storage area of ​​the standard section.

[0010] Preferably, water inlet pipes / culverts are respectively provided on the outer side walls close to the land of the first sewage interception area of ​​the water inlet section and the second sewage interception area of ​​the standard section.

[0011] Preferably, supplementary flushing pipes are respectively provided on the top plates of the first regulating and storing area of ​​the water inlet section and the second regulating and storing area of ​​the standard section.

[0012] Preferably, a rainwater pump is provided in the sump at the bottom of the third regulating storage area of ​​the water outlet section. More preferably, the rainwater pump is a submersible axial flow pump and the number thereof is at least two.

[0013] Preferably, a sump is provided at the bottom of the pump well area of ​​the discharge section and a sewage pump is provided in the sump.

[0014] Preferably, the sewage pumps are submersible centrifugal pumps equipped with flushing valves and the number is at least 2.

[0015] Preferably, low-impact development facilities are provided on the upper ground of the water inlet section, standard section and water outlet section, and an overflow pipe is provided in the low-impact development facility, which is connected to at least one of the first regulating and storage area of ​​the water inlet section, the second regulating and storage area of ​​the standard section and the third regulating and storage area of ​​the water outlet section through the overflow pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention sets the regulation and storage, sewage interception functions and the river ecological waterbank in the same structure, with an ecological shallow water wetland on the inside, a regulation and storage area and a sewage interception area in the middle, and sponge facilities along the river on the top. The side walls of the regulation and storage area are used as river retaining walls. It can be implemented within the blue line of the river without the need for additional land. It can be constructed simultaneously with the revetment excavation and construction. The function of pollution control along the river can be achieved through the ecological waterbank structure itself.

[0018] 2. The ecological waterbank of the present invention has both storage and regulation functions and sewage interception functions. According to the needs of river regulation, such as CSOs storage, initial rain storage, river channel storage, sewage interception, etc., storage areas and sewage interception areas in each section and their water inlet control facilities can be optionally configured, which is flexible and easy to implement.

[0019] 3. Compared with the traditional sewage interception pipe that runs through the entire river channel, this invention not only solves the sewage outlet in the dry season and lifts the sewage to the nearest municipal sewage pipe, but also does not need to frequently cross existing roads or buildings, etc., and is not restricted by the downstream sewage interception main pipe. The collection and transportation efficiency of intercepted sewage is higher.

[0020] 4. The sewage pump provided in the present invention not only solves the problem of the outlet of dry flow sewage during the non-rainfall period, but also can serve as a drain pump in the storage area, pumping the combined sewage or initial rainwater stored in the pool to the downstream sewage drainage system and sending it to the sewage treatment system for treatment, thus solving the whereabouts of the combined sewage or initial rainwater in the storage area and freeing up storage space in time for the storage area to enter the next storage cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of functional zoning according to an embodiment of the present invention.

[0022] Figure 2 It is a plan view of an embodiment of the present invention.

[0023] Figure 3 for Figure 1 、 2 AA cross-sectional diagram of .

[0024] Figure 4 for Figure 1 、 2 BB cross-section diagram.

[0025] Figure 5 for Figure 1 、 2 Schematic diagram of CC cross section.

[0026] Figure 6 for Figure 1 、 2 DD cross-section diagram.

[0027] The parts in the figure are numbered as follows:

[0028] 100 Water Inlet Section

[0029] 120 First Storage Area

[0030] 121 First water storage ditch

[0031] 122 Flushing device

[0032] 123 Inlet Gate

[0033] 124 First water storage inlet pipe / culvert

[0034] 125 First storage and replenishment flushing pipe

[0035] 130 First sewage interception area

[0036] 131 First sewage inlet pipe / culvert

[0037] 132 First interception sewage collection trench

[0038] 200 standard section

[0039] 210 First Ecological Shallow Wetland Area

[0040] 220 Second Storage Area

[0041] 221 Second water storage ditch

[0042] 222 Second storage water inlet pipe / culvert

[0043] 225 Second storage and replenishment flushing pipe

[0044] 230 Second Interception Area

[0045] 231 Second sewage inlet pipe / culvert

[0046] 232 Second sewage collection ditch

[0047] 300 outlet section

[0048] 310 Second ecological shallow water wetland area

[0049] 320 The third storage area

[0050] 321 The third water storage ditch

[0051] 322 Rainwater Pump

[0052] 323 Outlet Gate

[0053] 330 Third Interception Area

[0054] 332 The third sewage collection ditch

[0055] 400 Venting Section

[0056] 410 Pump Well Area

[0057] 411 Sewage Pump

[0058] 420 Valve Well

[0059] 421 discharge pipe

[0060] 511 Retaining Wall

[0061] 512 Riverside Road

[0062] 513 Low-Impact Development Facilities

[0063] 514 Overflow

[0064] 515 Perforated pipe. DETAILED DESCRIPTION

[0065] The following describes the specific embodiments of the present invention in detail in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the present invention. Although the present invention has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative, rather than limiting, the scope of the present invention.

[0066] See also Figure 1 and Figure 2 An ecological waterfront with self-controlled river pollution control includes an inlet section 100, a standard section 200, an outlet section 300, and a drain section 400. These four sections can be designed and assembled according to the needs of river pollution control. Each section is connected by embedded steel-edged rubber waterstops and caulking sealant, and shear bars are installed in the wall to prevent dislocation at the joints. The ecological waterfront shown in the figure includes two inlet sections 100, one outlet section 200, one drain section 400, and several standard sections 300. The connection order is:

[0067]

[0068] Among them, the water inlet section 100 includes the first regulating and storing area 120 and the first sewage interception area 130; the standard section 200 includes the first ecological shallow water wetland area 210, the second regulating and storing area 220, and the second sewage interception area 230; the water outlet section 300 includes the second ecological shallow water wetland area 310, the third regulating and storing area 320, and the third sewage interception area 330; the discharge section 400 includes the pump well area 410 and the valve well 420.

[0069] See also Figures 2 to 4 As shown, the first regulating and storing area 120 of the water inlet section 100 is located between the first sewage interception area 130 and the river channel, and a first regulating and storing water collecting groove 121 is provided on the bottom plate of the first regulating and storing area 120, which is used to collect sediments in the first regulating and storing area 120 for easy flushing; a flushing device 122 and a water inlet gate 123 are provided on the inner side wall of the first regulating and storing area 120 close to the river channel, the flushing device 122 is used for flushing the first regulating and storing area 120, and the water inlet gate 123 is used to control the water inlet during the self-regulation of the river channel; a first regulating and storing water inlet pipe / culvert 124 is provided on the outer side wall of the first regulating and storing area 120, which is used to receive the intercepted primary rain or combined sewage, and incorporate the primary rain or combined sewage into the regulating and storing area; a first regulating and storing supplementary flushing pipe 125 is provided on the top plate of the first regulating and storing area 120, which is used to supplement the flushing water of the regulating and storing area.

[0070] A first sewage interception inlet pipe / culvert 131 is provided on the outer side wall of the first sewage interception area 130 of the water inlet section 100, which is used to connect the sewage discharged from the surrounding area of ​​the river and collect the sewage into the first sewage interception area 130; a first sewage interception water collection groove 132 is provided on the bottom plate of the first sewage interception area 130. The drainage slope of the groove is set according to the hydraulic calculation results of the drainage pipe to meet the discharge requirements of the intercepted sewage.

[0071] like Figure 2 and Figure 5 As shown, a first ecological shallow water wetland area 210 is set up on the side of the standard section 200 close to the river channel, which provides a biological growth matrix for the waterfront revetment and provides basic conditions for river water ecological restoration and riverbank landscape improvement.

[0072] A second regulating and storage water collection ditch 221 is installed on the floor of the second regulating and storage area 220 of the standard section 200, and a second regulating and storage supplementary flushing pipe 225 is installed on the roof of the second regulating and storage area 220. A second regulating and storage water inlet pipe / culvert 222 can be installed on the outer side wall of the second regulating and storage area 220, depending on the location of the pipe / culvert that needs to be connected to intercepted combined sewage or initial stormwater.

[0073] A second sewage interception ditch 232 is provided on the bottom plate of the second sewage interception area 230 of the standard section 200. A second sewage interception inlet pipe / culvert 231 can be provided on the outer side wall of the second sewage interception area 230 according to the location where the sewage interception pipe / culvert needs to be connected along the line.

[0074] like Figure 2 and Figure 6 As shown, a second ecological shallow water wetland area 310 is set on the side of the outlet section 300 close to the river channel.

[0075] A third regulating and collecting water groove 321 is provided on the bottom plate of the third regulating and storing area 320 of the water outlet section 300 .

[0076] The bottom plate of the third sewage interception area 330 of the outlet section 300 is provided with a third sewage interception water collection ditch 332. The bottom plate of the outlet section 300 is partially dropped to the bottom and a water collection pit is provided. The bottom depth is determined according to the scale of regulation and storage. When the river capacity needs to be regulated, at least two rainwater pumps 322 are installed in the water collection pit at the bottom of the third storage area 320 to discharge the empty and stored river water. A hole is opened in the side wall between the third storage area 320 and the third sewage interception area 330 in the dropped bottom. A water outlet gate 323 is provided on the side of the hole where the third storage area 320 is located to control the discharge of combined sewage or initial rainwater from the third storage area 320.

[0077] The first regulating and storing area 120 of the water inlet section 100, the second regulating and storing area 220 of the standard section 200, and the third regulating and storing area 320 of the water outlet section 300 constitute a complete regulating and storing area, and the first sewage interception area 130 of the water inlet section 100, the second sewage interception area 230 of the standard section 200, and the third sewage interception area 330 of the water outlet section 300 constitute a complete sewage interception area.

[0078] like Figure 2 and Figure 6 As shown, a hole is opened between the pump well area 410 of the drain section 400 and the side wall of the third sewage interception area 330 of the outlet section 300. A sump is provided at the bottom of the pump well area 410 and at least two sewage pumps 411 are installed in the sump. The sewage is pumped to the valve well 420 by the sewage pump 411, and several sewage pump outlet pipes converge into a discharge pipe 421 for discharge outward.

[0079] For example, two submersible centrifugal pumps with flushing valves are used as sewage pumps 411, and the flow rate of each submersible centrifugal pump is 0.1m 3 / s, is arranged in the pump well area 410 of the emptying section 400. When the sewage pump 411 is started, the sludge deposited on the bottom of the pool is stirred and then pumped out through the flushing valve.

[0080] For example, low-impact development facilities 513 (such as grass-planted ditches, ecological retention facilities, etc.) are constructed on the upper ground of each segment, between the riverside road 512 and the retaining wall 511 (such as ecological gabions, etc.) to control non-point source pollution within the shoreline. Perforated pipes 515 (overflow pipes) are set at the bottom of the low-impact development facilities to collect infiltrated rainwater. Runoff that exceeds the control volume of the low-impact development facilities is discharged into the storage area of ​​each segment through the overflow port 514, further controlling non-point source pollution of the waterfront shoreline. Relatively clean surface runoff in the later stage of rainfall is directly discharged into the river along the river bank.

[0081] In other specific embodiments, the ecological waterfront with self-control of river pollution of the present invention can add other components according to actual pollution control needs, or adjust the specific quantity, position and model of each component, such as rainwater pumps and sewage pumps using other types of water pumps, or different quantities, which will not be repeated here.

[0082] For example, according to the drawings of this embodiment and the above-described ecological waterfront structure for self-control of river pollution, the specific application is as follows:

[0083] During the dry season, sewage intercepted along the river is intercepted in the sewage interception area and transmitted to the pump well area 410 of the discharge section 400, and is lifted by the sewage pump 411 and discharged into the municipal sewage network nearby, so that it is not restricted by the elevation of the downstream sewage pipeline, effectively improving the efficiency of sewage collection.

[0084] In the combined sewer system, when it rains, the combined sewage that has been intercepted to control overflow pollution is discharged into the sewage interception area, reducing overflow pollution and increasing the interception multiple of the system; when it rains heavily, the combined sewer network interception well (not included in the present invention) overflows directly into the river.

[0085] In the diversion drainage system, when it rains, the initial rainwater is discharged into the storage area to reduce the surface source pollution of the initial rainwater; when it rains heavily, the initial rainwater diversion well (not included in the present invention) overflows directly into the river.

[0086] When the combined sewage and initial rainwater from CSOs are severely polluted, after the rain stops, the outlet gate 323 of the outlet section 300 is opened. The sewage pump 411 of the discharge section 400 pumps the sewage and discharges it into the nearest municipal sewage network for treatment at a sewage treatment plant. After the discharge, the flushing device 122 of the inlet section 100 is opened to flush the storage area. The flushing water is pumped by the sewage pump 411 and discharged into the nearest municipal sewage network. The storage area then enters the next storage cycle.

[0087] When draining and dewatering the river, priority is given to using it for river water storage. By opening the water inlet gate 123 of the water inlet section 100, the river water is introduced into the storage area for storage. After the water is full, the water inlet gate 123 of the water inlet section 100 is closed. After the flood peak of the river passes, the river water is lifted and discharged into the river by the rainwater pump 323 installed in the water outlet section 300. After the storage area is emptied, the flushing device 122 of the water inlet section 100 is opened to flush the storage area. The flushing water is lifted by the sewage pump 411 and discharged into the nearby municipal sewage network. After that, the storage area enters the next storage cycle.

[0088] For example, when river regulation only needs to control CSOs combined sewage or initial rainwater pollution, it can be achieved by eliminating the sewage interception area, the water inlet gate 123 of the water inlet section 100 and the rainwater pump 323 of the water outlet section 300.

[0089] For example, when river channel regulation only needs to control direct sewage pollution along the river, it can be achieved by canceling the storage area.

[0090] For example, when river regulation only requires the storage of river water, this can be achieved by eliminating the flushing device 122 in the sewage interception area and the water inlet section 100 .

[0091] For example, when river regulation needs to control CSOs overflow or initial rainwater pollution or sewage pollution directly discharged along the river, it can be achieved by eliminating the water inlet gate 123 of the water inlet section 100 and the rainwater pump 323 of the water outlet section 300.

[0092] In other specific embodiments, the ecological waterfront with self-control of river pollution of the present invention can determine the number of units and cross-sectional dimensions of each segment assembly combination according to the height of the river bank retaining wall and the specific scale of actual pollution control to meet specific pollution control needs, which will not be repeated here.

[0093] It should be noted that the present invention, having been fully described, is susceptible to numerous variations and modifications, and is not limited to the specific embodiments described above. The foregoing embodiments are intended to illustrate the present invention, not to limit it. In short, the scope of protection of the present invention encompasses any such variations, substitutions, and modifications as would be apparent to one of ordinary skill in the art.

Claims

1. An ecological waterfront with self-controlled pollution along the river, characterized by: It includes an inlet section, a standard section, an outlet section, and a discharge section. The inlet section, several standard sections, the outlet section, several standard sections, and the inlet section are sequentially connected along the river bank. The discharge section is connected to the land side of the outlet section. The water inlet section is divided into a first storage area and a first sewage interception area in the direction of the river channel toward the land. A flushing device and a water inlet gate are provided on the inner side wall of the first storage area close to the river channel. The standard section is divided into the first ecological shallow water wetland area, the second storage area and the second sewage interception area in the direction of the river towards the land; The outlet section is divided into a second ecological shallow water wetland area, a third storage area and a third sewage interception area in sequence in the direction of the river channel toward the land. The bottom plate of the outlet section is partially dropped to the bottom and is provided with a sump. A hole is opened on the side wall between the third storage area and the third sewage interception area in the dropped bottom, and a water outlet gate is provided on the side of the third storage area. A rainwater pump is provided in the sump at the bottom of the third storage area of ​​the outlet section. The venting section is divided into a pump well area and a valve well. A sump is provided at the bottom of the pump well area of ​​the venting section and a sewage pump is provided in the sump. The valve well is provided with a discharge pipe, and the sewage pump is connected to the discharge pipe through a sewage pump outlet pipe. Among them, the first regulating and storing area of ​​the water inlet section, the second regulating and storing area of ​​the standard section, and the third regulating and storing area of ​​the water outlet section are connected and their inner side walls serve as river retaining walls, and the first sewage interception area of ​​the water inlet section, the second sewage interception area of ​​the standard section, the third sewage interception area of ​​the water outlet section, and the pump well area of ​​the discharge section are connected.

2. The ecological waterfront with self-controlled river pollution according to claim 1 is characterized in that: The water inlet section and the standard section, the standard section and the water outlet section, and the water outlet section and the drain section are connected respectively by embedded steel-edge rubber waterstops and caulking sealants, and shear rods are provided in the walls at the connections.

3. The ecological waterfront with self-controlled river pollution according to claim 1 is characterized in that: The first regulating and storing area and the first sewage intercepting area of ​​the water inlet section, the second regulating and storing area and the second sewage intercepting area of ​​the standard section, and the third regulating and storing area and the third sewage intercepting area of ​​the water outlet section are respectively provided with water collecting grooves on their bottom plates.

4. The ecological waterfront with self-controlled river pollution according to claim 1 is characterized in that: Water inlet pipes / culverts are respectively provided on the outer side walls close to the land of the first regulating and storing area of ​​the water inlet section and the second regulating and storing area of ​​the standard section.

5. The ecological waterfront with self-controlled river pollution according to claim 1 is characterized in that: Water inlet pipes / culverts are respectively provided on the outer side walls close to the land of the first sewage interception area of ​​the water inlet section and the second sewage interception area of ​​the standard section.

6. The ecological waterfront with self-controlled river pollution according to claim 1 is characterized in that: Supplementary flushing pipes are respectively provided on the top plates of the first regulating and storing area of ​​the water inlet section and the second regulating and storing area of ​​the standard section.

7. The ecological waterfront with self-controlled river pollution according to claim 1 is characterized in that: The rainwater pumps are submersible axial flow pumps and there are at least two of them.

8. The ecological waterfront with self-controlled river pollution according to claim 1 is characterized in that: The sewage pumps are submersible centrifugal pumps equipped with flushing valves and the number is at least 2.

9. The ecological waterfront with self-controlled river pollution according to any one of claims 1 to 8, characterized in that: Low-impact development facilities are provided on the upper ground of the water inlet section, standard section and water outlet section. An overflow pipe is provided in the low-impact development facilities, and the overflow pipe is connected to at least one of the first regulating and storage area of ​​the water inlet section, the second regulating and storage area of ​​the standard section and the third regulating and storage area of ​​the water outlet section.

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