Integrated rain and sewage diversion box culvert structure with water quality and quantity control and regulation and storage functions

Abstract

The utility model discloses a water quality and water quantity double -controlled integrated rain sewage diversion box culvert structure with the function of regulation and storage, the upper layer of box culvert body is rainwater channel, and the front and back sides of rainwater channel are connected with rainwater pipe, and both sides of lower layer are sewage channel, and the front and back sides of sewage channel are connected with sewage pipe, and between two sewage channels is sewage regulation and storage pond, and between sewage regulation and storage pond and sewage channel is interval through sewage regulation and storage weir board, and sewage regulation and storage pond still has the blowoff pipe who links to each other, is equipped with control valve on blowoff pipe, and the left and right sides of rainwater channel all have the water inlet pipe who links to each other, and the split flow well is embedded in rainwater channel in correspondence with every water inlet pipe, and the split flow well is close to the left and right sides inner wall of rainwater channel and is arranged, and its lower end is connected with the sewage channel of corresponding side through check valve, and its side end is connected with rainwater channel through hydraulic valve or water inlet weir board. The utility model integrates the collection, diversion, regulation and storage of rainwater and sewage in a box culvert, realizes the efficient, stable operation of rain sewage diversion.

Description

Technical Field

[0001] This utility model relates to the field of municipal drainage technology, and in particular to an integrated rainwater and sewage diversion box culvert structure with water quality and quantity dual control and regulation and storage function. Background Technology

[0002] With the acceleration of urbanization, the continuous expansion of urban scale, and the rapid increase in urban population, urban drainage systems are facing unprecedented pressure. Traditional urban drainage systems mostly adopt combined or separate systems, but in actual operation, both have exposed many problems, adversely affecting the urban environment and residents' lives. In combined sewer systems, rainwater and sewage share the same drainage pipes. In the early stages of rainfall, rainwater and sewage mix and are directly discharged into water bodies, resulting in a large amount of untreated sewage entering rivers, lakes, and other natural water bodies, causing water pollution and damaging the ecological environment. At the same time, during rainfall, the flow rate in combined sewer systems increases rapidly, easily leading to sewage overflow, which not only pollutes city streets and affects the city's aesthetics but may also spread diseases and endanger residents' health. In addition, combined sewer systems place high demands on the treatment capacity of sewage treatment plants. During rainfall, a large amount of mixed rainwater and sewage enters the sewage treatment plant, increasing the plant's load, potentially leading to a decrease in treatment efficiency or even affecting the normal operation of the treatment plant. While traditional separate sewer systems discharge rainwater and sewage through different pipes, theoretically avoiding the problems associated with combined sewer systems, they also have many drawbacks in actual construction and operation. Firstly, due to the complexity of urban construction and planning, misconnection and mixing of rainwater and sewage pipes frequently occur, resulting in some sewage being discharged into water bodies through rainwater pipes, still causing water pollution. Secondly, space is limited in high-density urban built-up areas, making the construction of separate rainwater and sewage pipe systems difficult to implement. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model aims to provide an integrated rainwater and sewage diversion box culvert structure with dual control of water quality and quantity and storage function, so as to integrate the functions of rainwater and sewage collection, diversion and storage in one box culvert, and realize the efficient and stable operation of rainwater and sewage diversion.

[0004] To achieve the above objectives, this utility model proposes an integrated rainwater and sewage diversion box culvert structure with dual control of water quality and quantity and storage function. The structure includes a box culvert body, the interior of which is divided into upper and lower layers. The upper layer is a rainwater channel, with its front and rear sides connected to rainwater pipes. The lower layer consists of two sewage channels, with their front and rear sides connected to sewage pipes. A sewage storage tank is located between the two sewage channels, separated from the sewage channels by a sewage storage weir. The sewage storage tank is also connected to a sewage discharge pipe, which is equipped with a control valve. Inlet pipes are connected to both the left and right sides of the rainwater channel. A diversion well is embedded within each inlet pipe within the rainwater channel. The diversion wells are arranged close to the inner walls of the left and right sides of the rainwater channel, with their lower ends connected to the corresponding sewage channel via check valves, and their side ends connected to the rainwater channel via hydraulic valves or inlet weirs.

[0005] On sunny days, the water flow is small and consists mainly of sewage. With the valve closed, the sewage in the diversion well enters the sewage channel through the check valve and is eventually transported to the sewage treatment plant through the sewage pipe.

[0006] During rainy days, the water flow is large. Initially, it is rainwater and sewage. The valve is closed, and the rainwater and sewage in the diversion well enter the sewage channel through the check valve. When the sewage channel is full, it overflows into the sewage storage tank. At the same time, the hydraulic valve is opened, and the excess rainwater enters the rainwater channel and is finally discharged into the river through the rainwater pipe.

[0007] In the above scheme: the side end of the diversion well is connected to the rainwater channel via a hydraulic valve. A water quality monitor is installed at the lower end of the diversion well, and a water volume monitor is installed at the upper end. The hydraulic valve, water quality monitor, and water volume monitor are all connected to the control system via circuitry. On sunny days: the water quality monitor detects that the water quality in the diversion well is substandard → the control system controls the hydraulic valve to close → the sewage in the diversion well enters the sewage channel through a check valve → and is finally transported to the sewage treatment plant through the sewage pipe. On rainy days: the water quality monitor detects that the water quality in the diversion well is substandard, and the water volume monitor detects that the water volume in the diversion well exceeds the standard → initially, the hydraulic valve is closed → the sewage in the diversion well enters the sewage channel through the check valve → the sewage channel is full and overflows into the sewage storage tank, simultaneously opening the hydraulic valve → excess rainwater enters the rainwater channel → and is finally discharged into the river through the rainwater pipe.

[0008] In the above solution: the check valve is a duckbill valve. The duckbill valve has a unique flexible rubber material and duckbill shape structure. Under normal working conditions, sewage can flow smoothly from the diversion well into the sewage channel through the duckbill valve. When there is a pressure change in the sewage channel, such as when the sewage pipe is blocked or the downstream sewage treatment plant's treatment capacity is limited, causing sewage backflow, the duckbill part of the duckbill valve will close quickly under the action of water flow pressure, forming a reliable sealing barrier, effectively preventing sewage from flowing back into the diversion well and rainwater channel, avoiding sewage pollution of the rainwater system, and ensuring the effect of rainwater and sewage separation.

[0009] In the above scheme: the top surface of the box culvert body is provided with an opening through which the shaft of the diversion well passes. The diversion well is embedded in the rainwater channel from top to bottom through this opening, and its upper end extends beyond the rainwater channel and is sealed by a manhole cover. The diversion well is modularly installed, making construction convenient.

[0010] In the above scheme: a sewage vent pipe is installed at the upper end of the sewage channel, extending upwards through the culvert body to above ground level. During the flow and storage of sewage within the sewage channel, various gases, such as hydrogen sulfide and methane, are continuously generated. The accumulation of these gases can cause an increase in pressure within the sewage channel. If not discharged in time, excessively high pressure may damage the culvert structure, leading to cracks, leaks, or even collapse. The sewage vent pipe can promptly discharge the gases from the sewage channel, balancing the internal and external pressures, ensuring the safety and stability of the culvert structure, and extending its service life.

[0011] In the above scheme, the box culvert body is prefabricated using reinforced concrete or fiberglass. Reinforced concrete box culverts have a long service life, generally reaching decades or even centuries, reducing the cost of later maintenance and replacement. Fiberglass box culverts are lightweight, easy to transport and install, and have extremely strong corrosion resistance, enabling them to be used for a long time in various harsh environments.

[0012] In the above scheme, the sewage pipe is connected to the sewage pipe or sewage treatment plant, which enables the sewage collected by the integrated rainwater and sewage diversion box culvert to be smoothly incorporated into the city's existing sewage transportation system.

[0013] The beneficial effects of this utility model are:

[0014] 1. Integrating multiple functions such as rainwater and sewage collection, diversion, and storage within a single box culvert structure, this significantly saves space and reduces land occupation compared to traditional decentralized rainwater and sewage treatment facilities. It is particularly suitable for urban areas with limited land resources, improving land use efficiency. 2. Through a rational structural design, efficient and stable operation of rainwater and sewage separation is achieved under different working conditions. During sunny and rainy days, the water flow path is automatically adjusted according to different water flow rates and water quality characteristics to ensure accurate separation of sewage and rainwater. This prevents sewage from entering the rainwater system and polluting water bodies, and also prevents rainwater from entering the sewage system and increasing the treatment burden. 3. In the early stages of rainy weather, rainwater and sewage enter the sewage channel through a check valve. When the sewage channel is full, it overflows into the sewage storage tank. This design effectively collects and treats initial rainwater and sewage, reducing direct pollution of rivers and other water bodies. On sunny days, the control valve on the discharge pipe is opened to empty the sewage storage tank. 4. Using hydraulic valves or inlet weirs, the water flow can be flexibly controlled according to the actual water flow. During rainy weather, when the sewage channel is full, the hydraulic valve is opened in time to allow excess rainwater to enter the rainwater channel and be discharged into the river. Alternatively, when the rainwater level exceeds the inlet weir, it overflows into the rainwater channel and is discharged into the river, ensuring the smooth operation of the entire system under different water flow conditions and improving the system's adaptability and reliability. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the present invention.

[0016] Figure 2 This is a plan of the rainwater drainage system.

[0017] Figure 3 This is a floor plan of the sewage channel. Detailed Implementation

[0018] like Figure 1 As shown in Figure 3, an integrated rainwater and sewage diversion box culvert structure with water quality and quantity dual control and storage function is shown, with the main body being the box culvert body 1.

[0019] The box culvert body 1 is prefabricated using reinforced concrete or fiberglass. Reinforced concrete box culverts have a long service life, generally reaching decades or even centuries, reducing the cost of later maintenance and replacement. Fiberglass box culverts are lightweight, easy to transport and install, and have extremely strong corrosion resistance, enabling them to be used for a long time in various harsh environments.

[0020] The interior of the box culvert body 1 is divided into upper and lower layers. The upper layer is the rainwater channel 2, which is connected to the rainwater pipe at the front and rear. The lower layer has sewage channels 4 on both sides, which are connected to the sewage pipe at the front and rear.

[0021] Between the two sewage channels 4 is a sewage storage tank 6, which is separated from the sewage channels 4 by a sewage storage weir 7. The sewage storage tank 6 is also connected to a sewage discharge pipe, which is equipped with a control valve. The sewage discharge pipe is connected to a sewage pipe or a sewage treatment plant, which enables the sewage collected by the integrated rainwater and sewage diversion culvert to be smoothly incorporated into the city's existing sewage transportation system.

[0022] Both sides of the rainwater channel 2 are connected to inlet pipes 3. Each inlet pipe 3 in the rainwater channel 2 is embedded with a diversion well 8. The diversion well 8 is arranged close to the inner wall of the left and right sides of the rainwater channel 2, and its lower end is connected to the sewage channel 4 on the corresponding side through a check valve 9. Its side end is connected to the rainwater channel 2 through a hydraulic valve 10 or an inlet weir plate.

[0023] Specifically, the top surface of the box culvert body 1 is provided with an opening through which the shaft of the diversion well 8 passes. The diversion well 8 is embedded in the rainwater channel 2 from top to bottom through this opening, and its upper end extends beyond the rainwater channel 2 and is sealed by a manhole cover. The diversion well 8 is modularly installed, making construction convenient.

[0024] On sunny days, the water flow is small and mainly consists of sewage. When the valve is closed, the sewage in the diversion well 8 enters the sewage channel 4 through the check valve 9 and is eventually transported to the sewage treatment plant through the sewage pipe.

[0025] During rainy days, the water flow is large. Initially, it is rainwater and sewage. When the valve is closed, the rainwater and sewage in the diversion well 8 enter the sewage channel 4 through the check valve 9. When the sewage channel 4 is full, it overflows into the sewage storage tank 6. At the same time, the hydraulic valve 10 is opened, and the excess rainwater enters the rainwater channel 2 and is finally discharged into the river through the rainwater pipe.

[0026] Specifically, the side end of the diversion well 8 is connected to the rainwater channel 2 via a hydraulic valve 10. A water quality monitor 11 is installed at the lower end of the interior of the diversion well 8, and a water volume monitor 5 is installed at the upper end. The hydraulic valve 10, the water quality monitor 11, and the water volume monitor 5 are all connected to the control system via circuitry. The control system can receive monitoring signals from the water quality monitor 11 and the water volume monitor 5, and control the opening and closing of the hydraulic valve 10 according to the monitoring signals.

[0027] On a sunny day: Water quality monitor 11 detects that the water quality in diversion well 8 is substandard → the control system controls the hydraulic valve 10 to close → the sewage in diversion well 8 enters sewage channel 4 through check valve 9 → and is finally transported to the sewage treatment plant through sewage pipe.

[0028] Rainy days: Water quality monitor 11 detects that the water quality in diversion well 8 is substandard, and water volume monitor 5 detects that the water volume in diversion well 8 exceeds the standard → Initial control hydraulic valve 10 is closed → Sewage in diversion well 8 enters sewage channel 4 through check valve 9 → Sewage channel 4 is full and overflows into sewage storage tank 6, and hydraulic valve 10 is opened simultaneously → Excess rainwater enters rainwater channel 2 → Finally discharged into the river through rainwater pipe.

[0029] Check valve 9 is a duckbill valve. The duckbill valve has a unique flexible rubber material and duckbill shape structure. Under normal working conditions, sewage can flow smoothly from the diversion well 8 into the sewage channel 4 through the duckbill valve. When there is a pressure change in the sewage channel 4, such as when the sewage pipe is blocked or the downstream sewage treatment plant's treatment capacity is limited, causing sewage backflow, the duckbill part of the duckbill valve will close quickly under the action of water flow pressure, forming a reliable sealing barrier. This effectively prevents sewage from flowing back into the diversion well 8 and the rainwater channel 2, avoids sewage pollution of the rainwater system, and ensures the effect of rainwater and sewage separation.

[0030] A sewage vent pipe 12 is installed at the upper end of the sewage channel 4, extending upwards through the box culvert body 1 to above ground level. During the flow and storage of sewage within the sewage channel 4, various gases, such as hydrogen sulfide and methane, are continuously generated. The accumulation of these gases can cause an increase in air pressure within the sewage channel. If not discharged in time, excessively high air pressure may damage the structure of the box culvert body 1, leading to safety accidents such as cracks, leaks, or even collapse. The sewage vent pipe 12 can promptly discharge the gases within the sewage channel 4, balancing the internal and external air pressure, ensuring the safety and stability of the box culvert structure, and extending its service life.

Claims

1. An integrated stormwater and sewage diversion box culvert structure with dual control of water quality and quantity and storage function, characterized in that: The culvert includes a box culvert body (1), which is divided into upper and lower layers. The upper layer is a rainwater channel (2), which is connected to a rainwater pipe at the front and rear. The lower layer consists of two sewage channels (4), which are connected to a sewage pipe at the front and rear. A sewage storage tank (6) is located between the two sewage channels (4). The sewage storage tank (6) and the sewage channels (4) are separated by a sewage storage weir plate (7). It is also connected to a sewage pipe, which is equipped with a control valve. The left and right sides of the rainwater channel (2) are connected to water inlet pipes (3). Each water inlet pipe (3) in the rainwater channel (2) is embedded with a diversion well (8). The diversion well (8) is arranged close to the inner wall of the left and right sides of the rainwater channel (2), and its lower end is connected to the sewage channel (4) on the corresponding side through a check valve (9). Its side end is connected to the rainwater channel (2) through a hydraulic valve (10) or an inlet weir plate.

2. The integrated rainwater and sewage diversion box culvert structure with water quality and quantity dual control and storage function as described in claim 1, characterized in that: The side end of the diversion well (8) is connected to the rainwater channel (2) through a hydraulic valve (10). A water quality monitor (11) is installed at the lower end of the interior of the diversion well (8), and a water volume monitor (5) is installed at the upper end of the interior. The hydraulic valve (10), the water quality monitor (11) and the water volume monitor (5) are all connected to the control system through a circuit.

3. The integrated rainwater and sewage diversion box culvert structure with water quality and quantity dual control and storage function as described in claim 1, characterized in that: The check valve (9) is a duckbill valve.

4. The integrated rainwater and sewage diversion box culvert structure with water quality and quantity dual control and storage function as described in claim 1, characterized in that: The top surface of the box culvert body (1) is provided with an opening through which the shaft of the diversion well (8) passes. The diversion well (8) is embedded in the rainwater channel (2) from top to bottom through the opening, and its upper end extends beyond the rainwater channel (2) and is sealed by a well cover.

5. The integrated rainwater and sewage diversion box culvert structure with water quality and quantity dual control and storage function as described in claim 1, characterized in that: The upper end of the sewage channel (4) is provided with a sewage vent pipe (12), which extends upward through the box culvert body (1) to above ground level.

6. The integrated rainwater and sewage diversion box culvert structure with water quality and quantity dual control and storage function as described in claim 1, characterized in that: The box culvert body (1) is prefabricated from reinforced concrete or fiberglass.

7. The integrated rainwater and sewage diversion box culvert structure with water quality and quantity dual control and storage function according to claim 1, characterized in that: The sewage pipe is connected to a sewage pipe or a sewage treatment plant.

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