CN110700374B

CN110700374B - An ecological waterfront with self-controlled pollution along the river

Info

Publication number: CN110700374B
Application number: CN201910965972.7A
Authority: CN
Inventors: 游孟陶; 阎轶婧; 董学刚
Original assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Current assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2025-09-12
Anticipated expiration: 2039-10-12
Also published as: CN110700374A

Abstract

An ecological waterfront with self-controlled pollution along the river, including 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

Ecological water bank capable of self-controlling pollution along river

Technical Field

The invention belongs to the field of comprehensive urban water environment remediation, and relates to an ecological water bank with functions of non-point source pollution control and sewage interception.

Background

In the comprehensive treatment of urban water environment, the combined overflow pollution, the split-flow initial rainwater and the direct-discharge sewage are the main pollution sources of the river channel.

Conventional pollution control measures include a combined overflow (Combined Sewer Overflows, CSOs for short) regulation reservoir, a primary rain regulation reservoir, a sewage interception pipe and the like. The regulating reservoir is used as an effective measure for controlling CSOs pollution and initial rainwater pollution, and is widely applied at home and abroad. However, the method needs monopolizing, is often limited in land, is difficult to construct large-scale regulation facilities, or is difficult to implement due to high engineering construction difficulty and high investment. The sewage interception pipe for river construction is commonly used for intercepting directly-discharged sewage or combined dry season sewage. However, for a tributary river, a sewage interception pipe penetrating through the whole line of the river needs to penetrate through an established road according to the traditional construction, the sewage interception pipe is too deep in burial depth, the downstream sewage interception main pipe is difficult to access, the construction difficulty is high, and the sewage interception benefit is poor.

In the current stage of comprehensive water environment remediation engineering, how to solve the problems of lack of land, difficult construction, low benefit, high cost and the like of pollution control engineering in river course remediation is a novel topic.

Disclosure of Invention

The invention aims at the problems and provides an ecological water bank capable of self-controlling pollution along a river.

The ecological water bank capable of self-controlling the pollution along the river comprises a water inlet section, a standard section, a water outlet section and an air release section, wherein the water inlet section, the standard sections, the water outlet section, the standard sections and the water inlet section are sequentially connected along the bank of the river, the air release section is connected to the land side of the water outlet section, the water inlet section is sequentially divided into a first regulation storage area and a first sewage interception area in the direction of the river to the land, a flushing device and a water inlet gate are arranged on the inner side wall of the first regulation storage area, which is close to the river, the standard section is sequentially divided into a first ecological shallow water wet area, a second regulation storage area and a second sewage interception area in the direction of the river to the land, the water outlet section is sequentially divided into a second ecological shallow water wet area, a third regulation storage area and a third sewage interception area in the direction of the river, a bottom plate part of the water release section is arranged at the bottom, a side wall between the third regulation storage area and the third sewage interception area is sequentially separated into a water collecting pit, the side wall is arranged on the bottom of the water inlet section and the water outlet section is connected to a water pump, the water inlet section is connected to the water outlet section is arranged in the water pump section, the water outlet section is connected to the sewage pump section, and the sewage drainage section is connected to the water inlet section.

Preferably, the water inlet section and the standard section, the standard section and the water outlet section and the emptying section are respectively connected through a buried steel edge rubber water stop and caulking sealant, and a shearing rod is arranged in a wall body at the joint.

Preferably, the bottom plates of the first regulation area and the first sewage interception area of the water inlet section, the second regulation area and the second sewage interception area of the standard section, and the third regulation area and the third sewage interception area of the water outlet section are respectively provided with water collecting grooves.

Preferably, the water inlet pipe/culvert is respectively arranged on the outer side wall of the first regulation area of the water inlet section and the outer side wall of the second regulation area of the standard section, which is close to the land.

Preferably, the outer side walls of the first sewage interception area of the water inlet section and the second sewage interception area of the standard section, which are close to the land, are respectively provided with a water inlet pipe/culvert.

Preferably, the top plates of the first regulation area of the water inlet section and the second regulation area of the standard section are respectively provided with a supplementary flushing pipe.

Preferably, a rainwater pump is arranged in a water collecting pit at the bottom of the third regulation area of the water outlet section. More preferably, the rainwater pump is a submersible axial flow pump and the number of the rainwater pumps is at least 2.

Preferably, a sump is arranged at the bottom of the pump well region of the emptying section, and a sewage pump is arranged in the sump.

Preferably, the sewage pump is a submersible centrifugal pump with a flushing valve and has a number of at least 2.

Preferably, the upper ground of the water inlet section, the standard section and the water outlet section is provided with a low-influence development facility, and an overflow pipe is arranged in the low-influence development facility and is connected with at least one of a first regulation area of the water inlet section, a second regulation area of the standard section and a third regulation area of the water outlet section through the overflow pipe.

Compared with the prior art, the invention has the beneficial effects that:

1. According to the invention, the functions of regulation and sewage interception and the ecological water bank of the river channel are arranged in the same structure, the inner side is the ecological shallow water wetland, the middle is the regulation and sewage interception area, the upper part is the along-river sponge facility, the side wall of the regulation and sewage interception area is used as the retaining wall of the river channel, the regulation and sewage interception area can be implemented within the scope of the blue line of the river channel, the construction is synchronous without additionally adding land and combining with the excavation construction of the revetment, and the function of pollution control along the river channel can be realized through the ecological water bank structure.

2. The ecological water bank has the functions of regulation and sewage interception, and according to the requirements of river channel regulation, such as CSOs regulation, initial rain regulation, river channel regulation, sewage interception and the like, the regulation and interception areas of each section and the sewage interception areas and the water inflow control facilities thereof can be selected, so that the ecological water bank is flexible in configuration and easy to implement.

3. Compared with the traditional sewage interception pipe penetrating through the whole river channel, the invention not only solves the problem of the sewage outlet in dry seasons, and the sewage is lifted and discharged to the municipal sewage pipe nearby, but also does not need to frequently traverse the current road or building and the like, is not limited by the downstream sewage interception pipe, and has higher collection and conveying benefits of the intercepted sewage.

4. The sewage pump provided by the invention not only solves the problem of dry-flow sewage outlet in a non-rainfall period, but also can be used as an emptying water pump of a regulation and storage area, and can pump the converged sewage or initial rainwater regulated and stored in the tank to a downstream sewage drainage system for treatment by a sewage treatment system, so that the problem of going to the converged sewage or initial rainwater in the regulation and storage area is solved, and meanwhile, the regulation and storage space is vacated in time, and the regulation and storage area enters the next regulation and storage period.

Drawings

FIG. 1 is a schematic diagram of a functional partition according to an embodiment of the present invention.

Fig. 2 is a schematic plan view of an embodiment of the present invention.

Fig. 3 is a schematic view of section A-A of fig. 1 and 2.

Fig. 4 is a schematic view of section B-B of fig. 1, 2.

Fig. 5 is a schematic view of section C-C of fig. 1, 2.

Fig. 6 is a schematic view of the D-D section of fig. 1, 2.

The components in the figures are numbered as follows:

100. Water inlet section

120. First regulation zone

121. First regulation water collecting groove

122. Flushing device

123. Water inlet gate

124. First regulation water inlet pipe/culvert

125. First regulation and storage supplementing flushing pipe

130. First dirt interception area

131. First sewage-intercepting water inlet pipe/culvert

132. First sewage interception and collection groove

200. Standard segment

210. Shallow water wet area of first ecological state

220. Second regulation zone

221. Second regulation water collecting groove

222. Second regulation water inlet pipe/culvert

225. Second regulation and storage supplementing flushing pipe

230. Second dirt interception area

231. Second sewage-intercepting water inlet pipe/culvert

232. Second sewage interception and collection groove

300. Water outlet section

310. Second ecological shallow water wet area

320. A third regulation zone

321. Third regulation water collecting groove

322. Rain water pump

323. Water outlet gate

330. Third dirt interception area

332. Third dirt-intercepting and water-collecting groove

400. Emptying section

410. Pump well region

411. Sewage pump

420. Valve well

421. Discharge pipe

511. Retaining wall

512. Along the river course

513. Low impact development facility

514. Overflow port

515. And (5) perforating the pipe.

Detailed Description

The following detailed description of the invention, taken in conjunction with the accompanying drawings, will provide those skilled in the art with a more readily understood understanding of how the invention may be practiced. While the present invention has been described in connection with the preferred embodiments thereof, these embodiments are set forth only and are not intended to limit the scope of the invention.

Referring to fig. 1 and 2, an ecological water bank capable of self-controlling pollution along a river comprises a water inlet section 100, a standard section 200, a water outlet section 300 and an emptying section 400, wherein the four sections can be assembled and combined according to the design scale of pollution control along the river, each section is connected through a buried steel edge rubber water stop band and caulking sealant, and a shearing rod is arranged in a wall body so as to prevent the joint from dislocation. The ecological water bank in the figure comprises a 2-section water inlet section 100, a 1-section water outlet section 200, a 1-section emptying section 400 and a plurality of sections of standard sections 300, and the connection sequence is as follows:

the water inlet section 100 includes a first regulation area 120 and a first sewage interception area 130, the standard section 200 includes a first ecological shallow water wet area 210, a second regulation area 220 and a second sewage interception area 230, the water outlet section 300 includes a second ecological shallow water wet area 310, a third regulation area 320 and a third sewage interception area 330, and the emptying section 400 includes a pump well area 410 and a valve well 420.

Referring to fig. 2 to 4, a first regulation zone 120 of the water inlet section 100 is located between a first sewage interception zone 130 and a river channel, a first regulation water collection groove 121 is formed in the bottom plate of the first regulation zone 120 and is used for collecting sediment in the first regulation zone 120, flushing is facilitated, a flushing device 122 and a water inlet gate 123 are arranged on the inner side wall, close to the river channel, of the first regulation zone 120, the flushing device 122 is used for flushing the first regulation zone 120, the water inlet gate 123 is used for controlling water inlet during regulation of the river channel, a first regulation water inlet pipe/culvert 124 is arranged on the outer side wall of the first regulation zone 120 and is used for accessing intercepted primary rain or combined sewage to enable the primary rain or the sewage to be combined into the regulation zone for regulation, and a first regulation and supplement flushing pipe 125 is arranged at the top plate of the first regulation zone 120 and is used for supplementing flushing water in the regulation zone.

The first sewage interception inlet pipe/culvert 131 is arranged on the outer side wall of the first sewage interception area 130 of the water inlet section 100 and is used for accessing sewage discharged from the peripheral area of the river channel and collecting the sewage into the first sewage interception area 130, the first sewage interception collecting groove 132 is arranged on the bottom plate of the first sewage interception area 130, and the groove drainage gradient is set according to the hydraulic calculation result of the drainage pipe channel so as to meet the drainage requirement of intercepting the sewage.

As shown in fig. 2 and 5, a first ecological shallow water wet area 210 is disposed on the side of the standard segment 200, which is close to the river channel, and provides a biological growth matrix for the waterfront revetments, and provides basic conditions for ecological restoration of the river channel and elevation of the waterfront landscape.

A second regulation water collecting groove 221 is arranged on the bottom plate of the second regulation zone 220 of the standard section 200, and a second regulation supplementary flushing pipe 225 is arranged at the top plate of the second regulation zone 220. A second storage water inlet pipe/culvert 222 may be provided on the outer sidewall of the second storage area 220 according to the position along which the intercepting and converging sewage or the initial rainwater pipe/culvert is to be connected.

A second sewage interception and collection groove 232 is provided on the bottom plate of the second sewage interception area 230 of the standard segment 200. A second intercepting inlet pipe/culvert 231 may be provided on an outer sidewall of the second intercepting region 230 according to a position along the line where the intercepting sewer/culvert is to be accessed.

As shown in fig. 2 and 6, a second ecologically shallow water wet area 310 is provided at a side of the water section 300 close to the river.

The third regulation zone 320 floor of the water outlet section 300 is provided with a third regulation water collection groove 321.

The third sewage interception area 330 of the water outlet section 300 is provided with a third sewage interception and collection channel 332 at its bottom. The bottom plate of the water outlet section 300 is partially dropped and provided with a water collecting pit, the bottom dropping depth is determined according to the regulation scale, and when the river capacity is required to be regulated, at least 2 rainwater pumps 322 are arranged in the water collecting pit at the bottom of the third regulation area 320 and used for draining the regulated river water. A hole is formed in the side wall between the third regulation area 320 and the third sewage interception area 330 in the falling bottom, and a water outlet gate 323 is arranged on the side of the hole where the third regulation area 320 is located and used for controlling the third regulation area 320 to merge sewage or initial rainwater to empty.

The first regulation zone 120 of the water inlet section 100, the second regulation zone 220 of the standard section 200, and the third regulation zone 320 of the water outlet section 300 form a complete regulation zone, and the first sewage interception zone 130 of the water inlet section 100, the second sewage interception zone 230 of the standard section 200, and the third sewage interception zone 330 of the water outlet section 300 form a complete sewage interception zone.

As shown in fig. 2 and 6, a hole is formed between the pump well region 410 of the emptying section 400 and the side wall of the third sewage interception region 330 of the water outlet section 300, a water collecting pit is arranged at the bottom of the pump well region 410, at least 2 sewage pumps 411 are arranged in the water collecting pit, the sewage pumps 411 are lifted to the valve well 420, and a plurality of sewage pump water outlet pipes are converged to one discharge pipe 421 for outward discharge.

Illustratively, 2 submersible centrifugal pumps with flushing valves are used as the sewage pump 411, the flow rate of each submersible centrifugal pump is 0.1m ³/s, the submersible centrifugal pumps are arranged in the pump well region 410 of the emptying section 400, and when the sewage pump 411 is started, the sludge deposited at the bottom of the tank is pumped out after being stirred through the flushing valves.

Illustratively, at the upper ground of each segment, a low impact development facility 513 (e.g., grass planting trench, ecological retention facility, etc.) is built between along the river course 512 and retaining wall 511 (e.g., using ecological gabions, etc.) to control the in-shore source pollution. The bottom of the low-influence development facility is provided with a perforated pipe 515 (overflow pipe) for collecting the infiltration rainwater, and the runoff exceeding the control volume of the low-influence development facility is discharged into the regulation and storage area of each segment section through an overflow port 514, so that the surface source pollution of the shore line is further controlled. And relatively clean surface runoff in the late period of rainfall is directly discharged into a river along a river shoreline.

In other specific embodiments, the ecological water bank capable of self-controlling the river pollution according to the invention can be additionally provided with other components according to the actual pollution control requirement, or the specific number, position, model and the like of each component can be adjusted, for example, a rainwater pump and a sewage pump adopt other types of water pumps, or different numbers are not repeated here.

The drawings according to the embodiment and the ecological water bank structure for self-control along river pollution described above are exemplary, and the specific application cases are as follows:

In dry season, the sewage intercepted along the river is intercepted and transmitted to the pump well region 410 of the emptying section 400 through the intercepting region, and is lifted by the sewage pump 411 to be discharged into the municipal sewage pipe network nearby, so that the efficiency of the sewage nano-pipe can be effectively improved without being limited by the elevation of the downstream sewage pipe.

In the drainage system of the combined system, the combined sewage after interception for controlling overflow pollution is discharged into a sewage interception area during rainfall, so that the overflow pollution is reduced, the interception multiple of the system is improved, and the combined sewage directly overflows into a river at a combined pipe network intercepting well (not included in the invention) during heavy rainfall.

In the diversion drainage system, initial rainwater is discharged into a regulation area during rainfall to reduce the pollution of an initial rainwater surface source, and the rainwater directly overflows into a river at an initial rainwater diversion well (not included in the invention) during heavy rainfall.

When the sewage is severely polluted by CSOs and the initial rainwater, after the rainwater is stopped, the water outlet gate 323 of the water outlet section 300 is opened, and the sewage is lifted by the sewage pump 411 of the emptying section 400 to be discharged into a municipal sewage pipe network nearby and is transmitted to a sewage treatment plant for treatment. After emptying, the flushing device 122 of the water inlet section 100 is opened to flush the regulation area, and flushing water is lifted by the sewage pump 411 and is discharged into a municipal sewage pipe network nearby. Thereafter, the regulation zone enters the next regulation cycle.

When the river channel drainage and waterlogging are performed, the river channel drainage and waterlogging are preferably performed by opening the water inlet gate 123 of the water inlet section 100, introducing the river water into the regulation and storage area for regulation and storage, and closing the water inlet gate 123 of the water inlet section 100 after full storage. After the river course flood peak passes the border, river water is lifted and discharged to the river course through the rainwater pump 323 arranged on the water outlet section 300. After the regulation area is emptied, the flushing device 122 of the water inlet section 100 is opened to flush the regulation area, and flushing water is lifted by the sewage pump 411 and is discharged into a municipal sewage pipe network nearby. Thereafter, the regulation zone enters the next regulation cycle.

Illustratively, when river rehabilitation only needs to control CSOs confluent sewage or initial rainwater pollution, the river rehabilitation can be realized 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.

By way of example, when river channel remediation only needs to control direct sewage pollution along the line, it can be achieved by eliminating the regulation zone.

Illustratively, when only the regulation of river water is needed for river rehabilitation, this can be achieved by eliminating the sewage interception area and the flushing device 122 of the water inlet section 100.

Illustratively, when river channel remediation needs to control CSOs overflow or initial rainwater pollution, direct sewage pollution along the line, this can be achieved by eliminating the water intake gate 123 of the water intake section 100 and the rainwater pump 323 of the water outlet section 300.

In other specific embodiments, the ecological water bank capable of self-controlling the pollution along the river can determine the number of units and the section size of each segment assembly and combination according to the height of the riverway shoreline retaining wall and the specific scale of actual pollution control so as to meet specific pollution control requirements, and the details are not repeated here.

It should be noted that numerous variations and modifications are possible in light of the fully described invention, and are not limited to the specific examples of implementation described above. The above-described embodiments are merely illustrative of the present invention and are not intended to be limiting. In general, the scope of the present invention should include those variations or alternatives and modifications apparent to those skilled in the art.

Claims

1. An ecological waterfront with self-controlled river pollution, characterized by comprising an inlet section, a standard section, an outlet section, and a venting section. The inlet section, several standard sections, an outlet section, several standard sections, and an inlet section are sequentially connected along the river bank, and the venting section is connected to the landward 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-control of 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-edged rubber waterstop and caulking sealant, 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 water collection grooves are respectively provided on the bottom plates of the first storage area and the first sewage interception area of the water inlet section, the second storage area and the second sewage interception area of the standard section, and the third storage area and the third sewage interception area of the water outlet section.

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 storage area of the water inlet section and the second regulating and storage 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 storage area of the water inlet section and the second regulating storage 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 the number is at least 2.

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 of the pumps is at least two.

9. The ecological waterfront with self-controlled river pollution according to any one of claims 1 to 8 is characterized in that 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.