Bridge deck rainwater treatment device

Abstract

The application relates to a bridge deck rainwater treatment device which comprises a box, a water inlet assembly, a water outlet assembly and an oil absorption assembly, the box is internally provided with an oil absorption area; one end of the water inlet assembly is arranged outside the box and is used for being connected with the bridge deck, and the other end is arranged inside the box; the water outlet assembly comprises a first water outlet pipe, one end of the first water outlet pipe is arranged inside the box, and the other end is arranged outside the box; the oil absorption assembly is arranged in the oil absorption area and is detachably connected with the box; along the rainwater flowing direction, the water inlet assembly is located upstream of the oil absorption assembly, and the oil absorption assembly is located upstream of the first water outlet pipe. In the application, rainwater is discharged into the box through the water inlet assembly, is subjected to oil absorption treatment by the oil absorption assembly, oil-containing particles in the rainwater are adsorbed, oil stains and heavy metals in the initial rainwater are separated from liquid, and are discharged from the first water outlet pipe, so that the purpose of purifying and treating the bridge deck rainwater is achieved.

Description

Technical Field

[0001] This application relates to the field of bridge deck rainwater treatment, and in particular to a bridge deck rainwater treatment device. Background Technology

[0002] In the initial stages of rainfall, the rainwater runoff on bridge decks collects a large amount of pollutants, including vehicle exhaust, oil drips, tire friction particles, dust, and oily wastewater and hazardous chemicals leaked during accidents. Direct discharge of these pollutants would adversely affect the aquatic ecosystem. To reduce the pollution of the aquatic environment by initial rainwater and oily wastewater from accidents, a centralized drainage system for the bridge deck needs to be designed when designing bridges spanning sensitive waterways.

[0003] Existing centralized bridge drainage systems, while simple in structure and easy to install for convenient and quick rainwater collection, have a major problem: the high pollutant content of rainwater in the early stages of rainfall. Traditional centralized bridge drainage systems collect rainwater from the bridge surface and discharge it directly into the drainage systems of the land on both banks. However, for bridges spanning long distances and with undulating slopes that cross sensitive waterways, the initial rainwater or hazardous chemicals leaked in an accident cannot be discharged into the drainage systems and emergency pools of the land on both banks. As a result, rainwater from the bridge surface and hazardous chemicals leaked in an accident cannot be effectively treated, leading to increasingly serious water ecological environment pollution problems. Summary of the Invention

[0004] This application provides a bridge deck rainwater treatment device to solve the problem that traditional bridge drainage systems in related technologies cannot purify and treat bridge deck rainwater.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bridge deck rainwater treatment device, comprising: a housing, a water inlet assembly, a water outlet assembly, and an oil absorption assembly; the housing has an oil absorption area inside; one end of the water inlet assembly is located outside the housing and is used to connect to the bridge deck, and the other end is located inside the housing; the water outlet assembly includes a first water outlet pipe, one end of which is located inside the housing and the other end is located outside the housing; the oil absorption assembly is located within the oil absorption area and is detachably connected to the housing; along the rainwater flow direction, the water inlet assembly is located upstream of the oil absorption assembly, and the oil absorption assembly is located upstream of the first water outlet pipe.

[0006] In some embodiments, the direction of rainwater flow is the same as the direction of the box's length extension, and the oil-absorbing assembly includes multiple oil-absorbing plates, which are inclined to form an angle with the horizontal direction.

[0007] In some embodiments, the direction of rainwater flow is the same as the length extension direction of the tank, and the first water outlet pipe is located on one side of the oil absorption area; the water outlet assembly also includes a second water outlet pipe, one end of which is placed inside the tank and the other end is placed outside the tank, and the second water outlet pipe is located above the oil absorption area; the water inlet assembly has a first position and a second position, and when it is in the first position, the water inlet assembly is connected to the oil absorption area, and when it is in the second position, the water inlet assembly is connected to the second water outlet pipe.

[0008] In some embodiments, the water inlet assembly includes: a water inlet pipe and an adjusting component. The water inlet pipe is fixed to the wall of the housing, with one end located outside the housing and used to connect to the bridge deck, and the other end located inside the housing. The adjusting component is disposed inside the housing and has a first position and a second position. When the adjusting component is in the first position, one end of the adjusting component is connected to the water inlet pipe and the other end is connected to the oil suction area. When the adjusting component is in the second position, one end of the adjusting component is connected to the water inlet pipe and the other end is connected to the second water outlet pipe.

[0009] In some embodiments, a filtration zone is provided inside the housing, along the direction of rainwater flow, and the oil absorption zone is located upstream of the filtration zone, with a filtration assembly provided inside the filtration zone.

[0010] In some embodiments, the filtration zone is located on one side of the oil absorption zone, and a partition plate is also provided inside the housing. The partition plate includes a first partition plate, which is disposed between the filtration zone and the oil absorption zone. The first partition plate is disposed along the width direction of the housing, and the bottom end of the first partition plate is connected to the bottom end of the inner wall of the housing. The top end of the first partition plate is located above the oil absorption assembly, and there is a gap between it and the top end of the inner wall of the housing.

[0011] In some embodiments, the partition plate further includes a second partition plate, which is fixed to the inner wall of the box and is arranged along the height direction of the box. The second partition plate is located on the side of the first partition plate near the oil absorption area and there is a gap between the second partition plate and the first partition plate. There is a gap between the bottom end of the second partition plate and the bottom end of the inner wall of the box plate. When the adjusting member is in the first position, the top end of the second partition plate is located above the side of the adjusting member near the first partition plate.

[0012] In some embodiments, the filter assembly is located below the second outlet pipe.

[0013] In some embodiments, the filtration assembly includes a water distribution tank, an activated carbon layer, and a diatomaceous earth layer, all of which are located between the first partition and the inner wall of the housing. The water distribution tank is located above the activated carbon layer, and the activated carbon layer is located above the diatomaceous earth layer.

[0014] In some embodiments, there is a gap between the bottom end of the diatomaceous earth layer and the bottom end of the inner wall of the box to form a water storage and drainage area inside the box, and the first water outlet pipe is connected to the inside of the water storage and drainage area.

[0015] The beneficial effects of the technical solution provided in this application include:

[0016] This application provides a bridge deck rainwater treatment device. Rainwater is discharged into the box through the water inlet component. After being treated by the oil absorption component, the oil-containing particles in the rainwater are adsorbed, and the oil, heavy metals and liquid in the initial rainwater are separated and discharged from the first outlet pipe, thus achieving the purpose of purifying the rainwater on the bridge deck. The box can be installed on the lower layer of the bridge pier column beam or dual-purpose bridge, that is, multiple boxes can be set on a bridge to treat the rainwater on the bridge deck in sections or areas. It can solve the problem of discharging pollutants such as initial rainwater and oily wastewater from bridge decks that cross sensitive water areas with long distances and undulating slopes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of this application;

[0019] Figure 2 This is an overall front view diagram provided for an embodiment of this application;

[0020] Figure 3 This is a top view of the water distribution tank provided in an embodiment of this application;

[0021] Figure 4 This is a side view of the second water outlet pipe and connector provided in an embodiment of this application.

[0022] In the diagram: 1. Box body; 10. Divider plate; 100. First divider plate; 101. Second divider plate; 11. Water storage and drainage area; 12. Sedimentation area; 13. Oil absorption area; 14. Filtration area;

[0023] 2. Water inlet assembly; 20. Water inlet pipe; 21. Guide rail; 22. Adjusting component;

[0024] 3. Water outlet assembly; 30. First water outlet pipe; 31. Second water outlet pipe;

[0025] 4. Oil absorption assembly; 40. Oil absorption plate;

[0026] 5. Filter assembly; 50. Water distribution tank; 500. Water distribution holes; 51. Activated carbon layer; 52. Diatomaceous earth layer;

[0027] 6. Sewage outlet;

[0028] 7. Connectors. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] This application provides a bridge deck rainwater treatment device that can solve the problem that traditional bridge drainage systems in related technologies cannot purify and treat bridge deck rainwater.

[0031] See Figures 1 to 4 This application provides a bridge deck rainwater treatment device, which includes: a housing 1, a water inlet assembly 2, a water outlet assembly 3, and an oil absorption assembly 4. The housing 1 is provided with an oil absorption area 13. One end of the water inlet assembly 2 is placed outside the housing 1 and is used to connect to the bridge deck, and the other end is placed inside the housing 1. The water outlet assembly 3 includes a first water outlet pipe 30, one end of which is placed inside the housing 1 and the other end is placed outside the housing 1. The oil absorption assembly 4 is disposed in the oil absorption area 13 and is detachably connected to the housing 1. Along the rainwater flow direction, the water inlet assembly 2 is located upstream of the oil absorption assembly 4, and the oil absorption assembly 4 is located upstream of the first water outlet pipe 30.

[0032] In this application, rainwater is discharged into the box 1 through the water inlet component 2. After being treated by the oil absorption component 4, the oil particles in the rainwater are absorbed, and the oil, heavy metals and liquid in the initial rainwater are separated and discharged from the first outlet pipe 30, thus achieving the purpose of purifying the rainwater on the bridge surface. The box 1 can be installed on the lower layer of the bridge pier column tie beam or dual-purpose bridge, that is, multiple boxes 1 can be set on a bridge to treat the rainwater on the bridge surface in sections or areas. This can solve the problem of discharging pollutants such as initial rainwater and oily wastewater from bridge surfaces that cross sensitive water areas with long distances and undulating slopes.

[0033] In this application, the water inlet assembly 2, the water outlet assembly 3, and the oil suction assembly 4 can be arranged along the height direction of the tank 1, that is, the water inlet assembly 2 is located above the oil suction assembly 4, and the oil suction assembly 4 is located above the water outlet assembly 3; or, as Figure 1As shown, the water inlet assembly 2, the water outlet assembly 3, and the oil suction assembly 4 can be arranged along the length of the tank 1, that is, the water inlet assembly 2 is arranged on one side of the oil suction assembly 4, and the water outlet assembly 3 is arranged on the other side. For ease of explanation, the following text uses the arrangement of the water inlet assembly 2, the water outlet assembly 3, and the oil suction assembly 4 along the length of the tank 1 as an example.

[0034] Preferably, in this embodiment, the device discharges rainwater in different ways during different rainfall periods. Specifically, the rainwater flow direction is the same as the length extension direction of the housing 1, and the first water outlet pipe 30 is located on one side of the oil absorption area 13; the water outlet assembly 3 also includes a second water outlet pipe 31, one end of which is placed inside the housing 1 and the other end is placed outside the housing 1. The second water outlet pipe 31 is connected to the inner wall of the housing 1 through a connector 7, which can be a clamp. The second water outlet pipe 31 is located above the oil absorption area 13; the water inlet assembly 2 has a first position and a second position, and when the water inlet assembly 2 is in the first position, the water inlet assembly 2 is connected to the oil absorption area 13, and when the water inlet assembly 2 is in the second position, the water inlet assembly 2 is connected to the second water outlet pipe 31.

[0035] The inlet of the second outlet pipe 31 adopts a flared U-shaped groove, and the outlet adopts a 90-degree bend. The middle part adopts a circular pipe. The second outlet pipe 31 is located above the oil suction component 4 and below the inlet pipe 20. When the initial water volume is small, rainwater directly enters the box 1, falls into the regulating component 22, and then enters the oil suction area 13. When the rainwater volume is large, the rainwater can be directly discharged into the inlet of the second outlet pipe 31.

[0036] The box body 1 is installed as a whole on the lower layer of the bridge pier column tie beam or dual-purpose bridge. The overall length-to-width ratio of the box body 1 can be set to 2:1, or 4:3, etc., and the specific length-to-width ratio can be set according to the requirements. The water inlet assembly 2 includes a water inlet pipe 20 and an adjusting component 22. The water inlet pipe 20 is fixed to the wall of the box body 1, with one end placed outside the box body 1 for connection to the bridge deck, and the other end placed inside the box body 1. The water inlet pipe 20 is located on the box body 1 near the top. When it rains, rainwater enters the box body 1 from the water inlet pipe 20 on one side of the box body 1. The adjusting component 22 is set inside the box body 1. The adjusting component 22 has a first position and a second position. The cross-section of the adjusting component 22 is U-shaped, with the opening of the U-shaped adjusting component 22 facing upward.

[0037] Rainwater flowing into the tank 1 is discharged through the first outlet pipe 30 or the second outlet pipe 31 under different rainfall conditions and flows into the water area. The second outlet pipe 31 is above the first outlet pipe 30 and its height is lower than the inlet pipe 20. The first outlet pipe 30 is located on the side wall of the tank 1 near the bottom. There is a gap between the oil absorption assembly 4 and the bottom of the inner wall of the tank 1 to form a sedimentation zone 12 inside the tank 1. The sedimentation zone 12 is located at the bottom of the oil absorption zone 13 and is connected to the oil absorption zone 13. A drain outlet 6 is opened at the bottom of the side wall of the tank 1, and a plug is movably connected in the drain outlet 6 to clean and wash away sediment and impurities such as mud and dust in the sedimentation zone 12. When the device is running, the drain outlet 6 is sealed tightly with the plug to prevent rainwater from seeping into the water area from the gaps in the holes.

[0038] In some possible embodiments, when the adjusting member 22 is in the first position, one end of the adjusting member 22 is connected to the water inlet pipe 20, and the other end is connected to the oil absorption area 13. When the adjusting member 22 is in the second position, one end of the adjusting member 22 is connected to the water inlet pipe 20, and the other end is connected to the second water outlet pipe 31. In this embodiment, one end of the adjusting member 22 is hinged to the water inlet pipe 20, so that the other end of the adjusting member 22 can move up and down. During the initial rainwater runoff on the bridge deck, the other end of the adjusting member 22 falls due to its own weight, and the adjusting member 22 is in the first position, with the other end of the adjusting member 22 connected to the oil absorption area 13. Therefore, the initial rainwater directly enters the oil absorption area 13 through the water inlet pipe 20 and the adjusting member 22. After being treated by the oil absorption component 4, the oil particles in the rainwater are absorbed. As the rainfall time increases, the water level in the box 1 becomes higher and higher. The other end of the adjusting member 22 moves upward with the rise in water level until it connects with the second water outlet pipe 31. At this time, the adjusting member 22 is in the second position.

[0039] In some possible embodiments, a guide rail 21 is provided on one side of the inner wall of the housing 1, and the adjusting member 22 is slidably connected to the guide rail 21. The guide rail 21 can be U-shaped, and the U-shaped guide rail 21 is welded and fixed to the inner wall of the housing 1, and can be set on the same wall as the water inlet pipe 20. The overall width of the U-shaped guide rail 21 is greater than the diameter of the water inlet pipe 20, that is, the U-shaped guide rail 21 covers the opening of the water inlet pipe 20, the top height of the U-shaped guide rail 21 does not exceed the top height of the water inlet pipe 20, and the bottom end of the U-shaped guide rail 21 is higher than the top of the oil suction assembly 4.

[0040] In this embodiment, the adjusting member 22 is mounted on the U-shaped guide rail 21. The adjusting member 22 can move up and down along the U-shaped guide rail 21, thereby adjusting the height of the adjusting member 22 to suit different rainfall environments. A drive device and a water level sensor can be installed inside the housing 1: when the adjusting member 22 is in the first position and the water level sensor detects the water level inside the housing 1 in the first state, the controller controls the drive device to drive the adjusting member 22 to rise along the U-shaped guide rail 21, so that the adjusting member 22 is in the second position; when the adjusting member 22 is in the second position and the water level sensor detects the water level inside the housing 1 in the second state, the controller controls the drive device to drive the adjusting member 22 to descend along the U-shaped guide rail 21, so that the adjusting member 22 is in the first position. Alternatively, the adjusting member 22 can be supported by water as the water level inside the housing 1 changes, moving from the first position to the second position as the water level rises, or moving from the second position to the first position as the water level falls.

[0041] When the adjusting component 22 is raised to the highest point of the guide rail 21, one end of the adjusting component 22 is in contact with the bottom end of the water inlet pipe 20, and the other end of the adjusting component 22 is connected to the second water outlet pipe 31 by a sealing gasket. Rainwater enters the housing 1 from the water inlet pipe 20 and flows into the second water outlet pipe 31 through the adjusting component 22, and then flows directly out of the housing 1. When the adjusting component 22 is lowered to the lowest point of the guide rail 21, rainwater enters the housing 1 from the water inlet pipe 20 and enters the oil suction area 13 after being dissipated by the adjusting component 22. The adjustable component 22 is designed with one side higher than the other, that is, the side closer to the water inlet pipe 20 is higher than the side closer to the second water outlet pipe 31. The adjusting component 22 can be removed and installed from the guide rail 21 for easy inspection and maintenance.

[0042] The above embodiments are merely various possible implementations of the embodiments of this application, and the embodiments of this application are not limited thereto.

[0043] Therefore, when the rainwater flow velocity on the bridge surface is high, part of the rainwater is intercepted by the regulating component 22 and enters the box 1, while the other part of the rainwater is directly flushed into the second outlet pipe 31 and discharged into the water area due to the excessive flow velocity. As the water level entering the box 1 increases, the adjustable component 22 is raised from the first position to the second position, connecting the inlet pipe 20 and the second outlet pipe 31, and the rainwater can be directly discharged into the water body through the second outlet pipe 31 and the drainage pipe.

[0044] Based on the above embodiments, in this embodiment, the rainwater flow direction is the same as the length extension direction of the box 1. The oil absorption assembly 4 includes multiple oil absorption plates 40, which are arranged along the width direction of the box. To improve the stability of the oil absorption plates 40, slots are provided on the inner wall of the box 1. The slots are fixed to the inner wall of the box 1 by welding or bolt connection. The two ends of the oil absorption plates 40 are embedded in the slots. The oil absorption plates 40 can be slidably removed from the slots for replacement, facilitating replacement and maintenance in the later stages of use. Figure 1 As shown, the oil-absorbing plates 40 are inclined to form an angle with the horizontal direction. Multiple oil-absorbing plates 40 can be installed at a 60-degree angle with the horizontal direction. One side of the oil-absorbing plate 40 is close to the inlet pipe 20, and the other side is close to the outlet pipe. The top of the oil-absorbing plate 40 is lower than the bottom of the guide rail 21, and the bottom of the oil-absorbing plate 40 is higher than the top of the drain outlet 6. The oil-absorbing plates 40 are fixed in parallel to each other, so that the water flow is vertical. When the initial rainwater passes through the channel between the oil-absorbing plates 40, the oil-containing particles in the rainwater are absorbed by the oil-absorbing plates 40.

[0045] The oil-absorbing plate 40 consists of two parts: a main plate and an oil-absorbing layer. The main plate serves as a support structure, with multiple main plates embedded and fixed in the slot at a 60-degree angle to the horizontal direction to increase the contact area between the oil-absorbing plate 40 and the water. The oil-absorbing layer is attached to the surface of the main plate and is used to absorb oil stains in rainwater. The oil-absorbing layer is made of an oleophilic and hydrophobic material. When oily rainwater flows through the oil-absorbing plate 40, the oil-absorbing layer on the oil-absorbing plate 40 only absorbs oil particles and not water, thereby achieving the purpose of oil-water separation of the initial rainwater on the bridge surface.

[0046] Based on the above embodiments, in this embodiment, a filter zone 14 is provided inside the housing 1. Along the direction of rainwater flow, the oil absorption zone 13 is located upstream of the filter zone 14. A filter assembly 5 is provided inside the filter zone 14, and the filter assembly 5 is located below the second water outlet pipe 31.

[0047] When the initial rainwater flow velocity on the bridge deck is low, the regulating component 22 drops to the lowest point of the guide rail 21. The initial rainwater dissipates energy through the regulating component 22, then passes through the oil absorption zone 13 and the filtration zone 14, and finally is discharged into the water area through the first outlet pipe 30. The impurities in the rainwater undergo comprehensive oil absorption, sedimentation, and filtration, separating the oil, heavy metals, and silt particles in the initial rainwater from the liquid, meeting the standards for direct discharge, thereby avoiding water pollution problems caused by the initial rainwater to environmentally sensitive water areas.

[0048] The filtration zone 14 is located on one side of the oil absorption zone 13. That is, the oil absorption zone 13 is provided with an inlet pipe 20 and the filtration zone 14 on both sides, and the oil absorption zone 13 and the water outlet assembly 3 are provided on both sides of the filtration zone 14. The box body 1 is also provided with a partition plate 10. The partition plate 10 includes a first partition plate 100. The first partition plate 100 is provided between the filtration zone 14 and the oil absorption zone 13. The first partition plate 100 is provided along the width direction of the box body 1, and the bottom end of the first partition plate 100 is connected to the bottom end of the inner wall of the box body 1. The top end of the first partition plate 100 is located above the oil absorption assembly 4 and there is a gap between it and the top end of the inner wall of the box body 1.

[0049] The first partition 100 is connected and fixed to the front and rear bottom surfaces of the housing 1. The first partition 100 can be fixed at the center of the bottom surface of the housing 1. The top of the first partition 100 is higher than the top of the oil absorption plate 40. After the rainwater has absorbed the oil in the oil absorption zone 13, the solid particles in the water, such as mud, dust, asphalt erosion and building concrete, are intercepted by the first partition 100 and cannot all enter the filtration zone 14 on one side of the first partition 100. These solid particles settle in the sedimentation zone 12 on the other side of the first partition 100. The remaining water enters the filtration zone 14 from the top of the first partition 100 through overflow, thereby improving the water treatment efficiency of this device.

[0050] Based on the above embodiments, the partition plate 10 further includes a second partition plate 101. The second partition plate 101 is fixed to the inner wall of the box body 1. The second partition plate 101 is arranged along the height direction of the box body 1. The second partition plate 101 is located on the side of the first partition plate 100 near the oil absorption area 13 and there is a gap between the second partition plate 100 and the first partition plate 100. There is a gap between the bottom end of the second partition plate 101 and the bottom end of the inner wall of the box body 1. When the adjusting member 22 is in the first position, the top end of the second partition plate 101 is located above the side of the adjusting member 22 near the first partition plate 101.

[0051] The second partition 101 is fixedly connected to the front and rear walls of the housing 1. The top of the second partition 101 is below the second water outlet pipe 31 and there is no gap between them. The bottom of the second partition 101 is lower than the top of the oil suction plate 40 and also lower than the bottom of the guide rail 21. The initial rainwater on the bridge surface is dissipated by the adjusting component 22 and falls into the oil suction area 13 to absorb grease. The second partition 101 blocks the rainwater that splashes after falling into the adjusting component 22, preventing it from entering the filtration area 14 directly without passing through the oil suction area 13, thereby reducing the efficiency of the device in purifying water.

[0052] When the device has been running for a period of time, the water level inside the tank 1 is higher than the top of the first baffle 100 but lower than the top of the second baffle 101. Since the density of oil is less than that of water, the oil will always be suspended above the water and thus be trapped by the second baffle 101. At this time, the oil cannot be completely absorbed by the oil suction plate 40, but it still cannot enter the filtration zone 14 due to gravity. Large solid pollutants such as mud and sand are trapped in the sedimentation zone 12 by the first baffle 100, while the oil-free water enters the filtration zone 14 by overflow.

[0053] The bottom of the side wall of the housing 1 has a drain outlet 6. When the device is running, the outlet is sealed with a plug to prevent water from seeping out of the hole. Large particles of pollutants such as mud, sand and dust in the water are intercepted by the first baffle 100 and settled in the sedimentation zone 12. The sediment in the sedimentation zone 12 needs to be cleaned regularly. After removing the plug, the sedimentation zone 12 can be cleaned and rinsed directly to prevent mud, sand and other impurities from accumulating too much in the sedimentation zone 12 and thus reducing the efficiency of the device in treating rainwater.

[0054] Based on the above embodiments, in this embodiment, the filter assembly 5 includes: a water distribution tank 50, an activated carbon layer 51, and a diatomaceous earth layer 52. The water distribution tank 50, the activated carbon layer 51, and the diatomaceous earth layer 52 are all located between the first partition 100 and the inner wall of the box 1. A water distribution area is formed on the water distribution tank 50. The water distribution tank 50 is located above the activated carbon layer 51, and the activated carbon layer 51 is located above the diatomaceous earth layer 52.

[0055] Specifically, the first partition 100 and the water distribution tank 50 are fixedly connected on one side, and the other side of the water distribution tank 50 is fixedly connected to the inner wall of the tank 1. The top of the water distribution tank 50 is slightly lower than the top of the first partition 100. Water enters the water distribution tank 50 through the overflow area formed between the second partition 101 and the first partition 100. Figure 3 As shown, the water distribution tank 50 is interconnected. The water overflowing into the water distribution tank 50 flows on the water distribution tank 50. Water distribution holes 500 are evenly opened at the bottom of the water distribution tank 50 to distribute water. The water drips evenly from the water distribution holes 500 on the water distribution tank 50 to the activated carbon layer 51 below.

[0056] Activated carbon layer 51 and diatomaceous earth layer 52 are arranged along the height of the housing 1, with a thickness ratio of 1:2 from top to bottom. The bottom of the filter assembly 5 is supported by a steel frame structure, which is fixedly connected to the wall of the housing 1. The first partition 100 is fixedly connected to one side of the steel frame structure. Activated carbon layer 51 can adsorb larger impurities in the water, such as silt, microorganisms, dust, and tire friction particles, as well as colloidal substances, ionic substances, organic matter, and dissolved gases. The main component of diatomaceous earth in diatomaceous earth layer 52 is calcium silicate. Diatomaceous earth has strong chemical properties and can effectively adsorb toxic substances, heavy metal ions, and dissolved organic matter in the water, and can also deodorize. The activated carbon layer 51 and diatomaceous earth layer 52 are distributed above and below the filtration zone 14 to further adsorb and filter pollutants in the water, achieving efficient water purification and ensuring the water meets direct discharge standards, thus avoiding water pollution problems caused by initial rainwater in environmentally sensitive water areas.

[0057] There is a gap between the bottom of the diatomaceous earth layer 52 and the bottom of the inner wall of the tank 1 to form a water storage and drainage area 11 inside the tank 1. The first water outlet pipe 30 is connected to the inside of the water storage and drainage area 11. The water that has been adsorbed and purified by the activated carbon layer 51 and the diatomaceous earth layer 52 falls into the water storage and drainage area 11. At this time, the water has reached the standard for direct discharge after oil absorption, sedimentation and filtration, and is finally discharged into the water area through the first water outlet pipe 30.

[0058] like Figure 2 As shown, the regulating component 22, oil suction plate 40, water distribution tank 50, activated carbon layer 51, and diatomaceous earth layer 52 divide the interior of the tank 1 into an energy dissipation zone, an oil suction zone 13, a sedimentation zone 12, an overflow zone, a water distribution zone, a filtration zone 14, and a water storage and drainage zone 11. The energy dissipation zone is located above the oil suction plate 40, the sedimentation zone 12 is located below the oil suction plate 40, and multiple oil suction plates 40 are located within the oil suction zone 13. The three zones of energy dissipation zone, sedimentation zone 12, and oil suction zone 13 are connected vertically. The water overflow zone is located between the first partition 100 and the second partition 101 in the middle of the tank 1. The sedimentation zone 12 and the water distribution zone and overflow zone on the water distribution tank 50 are connected. The filtration zone 14 is located below the water distribution zone, and the water storage and drainage zone 11 is located below the filtration zone 14.

[0059] Initial rainwater and oily wastewater from accidents flow into the tank 1 through the inlet pipe 20. After being dissipated by the intelligent regulating component 22, it enters the oil absorption zone 13. During the flow of the initial rainwater, oily impurities can be adsorbed onto the oil absorption plate 40, while solid particles such as silt and dust can directly settle at the bottom of the sedimentation zone 12. The solid particles are always blocked within the sedimentation zone 12 by the partition plate 10. After oil absorption and sedimentation, the water overflows through the partition plate 10 to the water distribution tank 50, and then flows into the filtration zone 14 after being evenly distributed. After being filtered by activated carbon and diatomaceous earth, the initial rainwater is discharged into the lowest water storage and drainage zone 11, and finally into the water area. When the initial rainwater flow velocity on the bridge deck is low, this device can comprehensively absorb oil, settle, and filter pollutants in the initial rainwater, separating silt, oil, heavy metals, etc. from the liquid, meeting the standards for direct discharge, thereby avoiding water pollution problems caused by initial rainwater to environmentally sensitive water areas. When the rainwater flow velocity on the bridge surface is high, part of the rainwater is intercepted and enters the oil absorption zone 13, while the other part flows into the second outlet pipe 31 and is discharged into the water body. As the water level entering the box 1 increases, the adjusting component 22 rises along the guide rail 21 and connects the inlet pipe 20 with the second outlet pipe 31, so that the rainwater can be directly discharged into the water body through the second outlet pipe 31.

[0060] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0061] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0062] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A bridge deck rainwater treatment device, characterized in that, It includes: The box (1) has an oil absorption area (13) inside. Water inlet assembly (2), one end of which is placed outside the box body (1) and used to connect with the bridge deck, and the other end is placed inside the box body (1); Water outlet assembly (3), the water outlet assembly (3) includes a first water outlet pipe (30), one end of the first water outlet pipe (30) is placed inside the box body (1), and the other end is placed outside the box body (1); Oil absorption assembly (4), the oil absorption assembly (4) is located in the oil absorption area (13) and is detachably connected to the box body (1). Along the direction of rainwater flow, the water inlet assembly (2) is located upstream of the oil absorption assembly (4), and the oil absorption assembly (4) is located upstream of the first water outlet pipe (30). The direction of rainwater flow is the same as the length extension direction of the box (1), and the first water outlet pipe (30) is located on one side of the oil absorption area (13); The water outlet assembly (3) also includes a second water outlet pipe (31), one end of which is placed inside the housing (1) and the other end is placed outside the housing (1). The second water outlet pipe (31) is located above the oil absorption area (13). The water inlet assembly (2) has a first position and a second position. When it is in the first position, the water inlet assembly (2) is connected to the oil absorption area (13). When it is in the second position, the water inlet assembly (2) is connected to the second water outlet pipe (31). The water inlet assembly (2) includes: Water inlet pipe (20), the water inlet pipe (20) is fixed to the wall of the box (1), one end is placed outside the box (1) and is used to connect with the bridge deck, and the other end is placed inside the box (1); Adjusting component (22) is disposed inside the housing (1). The adjusting component (22) has a first position and a second position. When the adjusting component (22) is in the first position, one end of the adjusting component (22) is connected to the water inlet pipe (20) and the other end is connected to the oil suction area (13). When the adjusting component (22) is in the second position, one end of the adjusting component (22) is connected to the water inlet pipe (20) and the other end is connected to the second water outlet pipe (31). The cross section of the adjusting component (22) is U-shaped. The U-shaped adjusting component (22) opens upward. A guide rail (21) is provided on one side of the inner wall of the housing (1). The adjusting component (22) is slidably connected to the guide rail (21). The housing (1) is provided with a filter zone (14) inside. Along the direction of rainwater flow, the oil absorption zone (13) is located upstream of the filter zone (14), and the filter zone (14) is provided with a filter assembly (5). The filtration zone (14) is located on one side of the oil absorption zone (13). The box body (1) is also provided with a partition plate (10). The partition plate (10) includes a first partition plate (100). The first partition plate (100) is located between the filtration zone (14) and the oil absorption zone (13). The first partition plate (100) is arranged along the width direction of the box body (1). The bottom end of the first partition plate (100) is connected to the bottom end of the inner wall of the box body (1). The top end of the first partition plate (100) is located above the oil absorption assembly (4) and there is a gap between it and the top end of the inner wall of the box body (1). The partition plate (10) further includes a second partition plate (101), which is fixed to the inner wall of the box (1). The second partition plate (101) is arranged along the height direction of the box (1). The second partition plate (101) is located on the side of the first partition plate (100) near the oil absorption area (13) and there is a gap between it and the first partition plate (100). There is a gap between the bottom end of the second partition plate (101) and the bottom end of the inner wall of the box (1). When the adjusting member (22) is in the first position, the top end of the second partition plate (101) is located above the side of the adjusting member (22) near the first partition plate (100).

2. The bridge deck rainwater treatment device as described in claim 1, characterized in that: The direction of rainwater flow is the same as the length extension direction of the box (1). The oil absorption assembly (4) includes multiple oil absorption plates (40). The oil absorption plates (40) are inclined to form an angle with the horizontal direction.

3. The bridge deck rainwater treatment device as described in claim 1, characterized in that: The filter assembly (5) is located below the second outlet pipe (31).

4. The bridge deck rainwater treatment device as described in claim 3, characterized in that, The filter assembly (5) includes a water distribution tank (50), an activated carbon layer (51), and a diatomaceous earth layer (52). The water distribution tank (50), the activated carbon layer (51), and the diatomaceous earth layer (52) are all located between the first partition (100) and the inner wall of the box (1). The water distribution tank (50) is located above the activated carbon layer (51), and the activated carbon layer (51) is located above the diatomaceous earth layer (52).

5. The bridge deck rainwater treatment device as described in claim 4, characterized in that: There is a gap between the bottom of the diatomite layer (52) and the bottom of the inner wall of the box (1) to form a water storage and drainage area (11) inside the box (1), and the first water outlet pipe (30) is connected to the inside of the water storage and drainage area (11).

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