Bridge floor runoff collecting pool with oil separation and sedimentation functions for expressway

Abstract

The utility model provides a bridge floor runoff collecting pool with oil separation and sedimentation functions for an expressway. Belongs to the technical field of expressways. According to the technical key points, the device comprises a primary sedimentation water distribution tank, an efficient sedimentation tank and a clean water tank which are sequentially arranged in the flowing direction of incoming water of bridge floor runoff, a primary water distribution wall arranged in the vertical direction is fixedly connected between the primary sedimentation water distribution tank and the efficient sedimentation tank, and an oil separation baffle arranged in the vertical direction is fixedly connected in the efficient sedimentation tank; a secondary water distribution wall arranged in the vertical direction is fixedly connected between the efficient sedimentation tank and the clean water tank, and a plurality of inclined pipes are fixedly connected between the secondary water distribution wall and the oil separation baffle. The subsequent clean later-stage runoff can be directly emptied without passing through a purification system; the purification treatment of the initial runoff is completely carried out through gravity flow without any power; the tank body is not provided with any power equipment, so that the maintenance workload is extremely low.

Description

Technical Field

[0001] The utility model relates to the technical field of expressways, in particular to a bridge deck runoff collection pool with oil separation and sedimentation functions for expressways. Background Art

[0002] The runoff from highway bridges is mixed with exhaust emissions from motor vehicles on the road surface, oil leaks from cars, objects spilled during transportation by passenger and freight vehicles, and other harmful substances scattered on the road surface. If these are not collected and treated to meet discharge standards, they will be directly discharged into the water and land along the route, causing serious harm to the ecological environment along the route.

[0003] At present, the highway system adopts the method of collecting the oil through the bridge drainage pipe and discharging it into the oil separation sedimentation tank for treatment. The structure of the oil separation sedimentation tank currently used is shown in the attached manual. Figure 1 .

[0004] The existing oil separation sedimentation tank has the following disadvantages:

[0005] 1. The water inlet pipe directly impacts the opposite wall, resulting in uneven water distribution in the sedimentation tank, which reduces the utilization efficiency of the sedimentation tank;

[0006] 2. The sedimentation tank is a horizontal flow sedimentation tank with poor treatment effect;

[0007] 3. The emptying of the pool body needs to be manually controlled, which requires a large amount of maintenance work;

[0008] 4. Late rainwater, that is, clean rainwater, still enters the pool, stirring up the already deposited pollutants, causing the pollutants to be discharged into the outside world with the water flow. Utility Model Content

[0009] The utility model aims to provide a bridge deck runoff collection pool with oil separation and sedimentation function for highways, so as to solve the problems raised in the above-mentioned background technology.

[0010] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0011] A bridge deck runoff collection tank with oil separation and sedimentation function for expressways comprises a primary water distribution tank, a high-efficiency sedimentation tank and a clear water tank which are arranged in sequence along the flow direction of the bridge deck runoff water, a water inlet pipe is connected to the primary water distribution tank at a side away from the high-efficiency sedimentation tank, a water baffle which is opposite to and inclined to the water inlet pipe mouth is fixedly connected in the primary water distribution tank, a primary water distribution wall which is arranged in a vertical direction is fixedly connected between the primary water distribution tank and the high-efficiency sedimentation tank, an oil separation baffle which is arranged in a vertical direction is fixedly connected in the high-efficiency sedimentation tank, a sludge hopper is integrally formed at the bottom of the high-efficiency sedimentation tank, a secondary water distribution wall which is arranged in a vertical direction is fixedly connected between the high-efficiency sedimentation tank and the clear water tank, a plurality of inclined pipes are fixedly connected between the secondary water distribution wall and the oil separation baffle, and a drainage pipe is connected to the clear water tank at a side away from the high-efficiency sedimentation tank.

[0012] As a further solution of the utility model: the top elevation of the oil-separating baffle exceeds the top elevation of the primary water distribution wall by 100 mm.

[0013] As a further solution of the utility model: the bottom elevation of the drainage pipe is 300 mm lower than the bottom elevation of the water inlet pipe.

[0014] As a further solution of the utility model: a first-level throttling pipe is fixedly connected to the middle of the first-level water distribution wall, one end of the first-level throttling pipe is connected to the primary water distribution tank, and the other end of the first-level throttling pipe is connected to the high-efficiency sedimentation tank;

[0015] A secondary throttling pipe is fixedly connected to the lower part of the secondary water distribution wall, one end of which is connected to the high-efficiency sedimentation tank, and the other end of which is connected to the clean water tank;

[0016] A third-level throttling pipe is connected to the lower part of the side of the clear water tank away from the secondary water distribution wall.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The purpose of collecting only the initial runoff from the bridge deck is achieved by adjusting the pool structure, and the subsequent clean runoff can be directly discharged without passing through the purification system.

[0019] (2) The initial runoff is purified entirely by gravity flow, without any power.

[0020] (3) The pool body does not have any power equipment, and the maintenance workload is extremely low. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the embodiments in the accompanying drawings, but this does not constitute any limitation to the present invention.

[0022] Figure 1This is a schematic diagram of the structure of an existing oil separator sedimentation tank.

[0023] Figure 2 The main schematic diagram of a bridge deck runoff collection pool with oil separation and sedimentation function for highways.

[0024] Figure 3 The schematic plan view of a bridge deck runoff collection pool with oil separation and sedimentation function for a highway.

[0025] In the figure: 1. Primary water distribution tank; 2. High-efficiency sedimentation tank; 3. Clear water tank; 4. Water inlet pipe; 5. Water baffle; 6. Primary water distribution wall; 7. Oil-separating baffle; 8. Mud hopper; 9. Secondary water distribution wall; 10. Inclined pipe; 11. Drain pipe; 12. Primary throttling pipe; 13. Secondary throttling pipe; 14. Tertiary throttling pipe. DETAILED DESCRIPTION

[0026] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0027] See also Figure 1-3 A bridge runoff collection pool with oil separation and sedimentation function for highways, including a primary water distribution pool 1, a high-efficiency sedimentation pool 2 and a clear water pool 3 arranged in sequence along the flow direction of the bridge runoff water, a water inlet pipe 4 is connected to the primary water distribution pool 1 on the side away from the high-efficiency sedimentation pool 2, and a water retaining plate 5 is fixedly connected to the primary water distribution pool 1 and is arranged obliquely opposite to the pipe mouth of the water inlet pipe 4. The bridge runoff water collected by the bridge drainage system is discharged into the primary water distribution pool 1 through the water inlet pipe 4, and the bridge runoff carries large particles that are deposited at the bottom of the primary water distribution pool 1 through the collision interception effect of the water retaining plate 5. At the same time, the water retaining plate 5 backflows the incoming water to both sides of the primary water distribution pool 1, so that the incoming water is evenly distributed in the primary water distribution pool 1.

[0028] A primary water distribution wall 6 arranged in the vertical direction is fixedly connected between the primary water distribution tank 1 and the high-efficiency sedimentation tank 2, and an oil-isolating baffle 7 arranged in the vertical direction is fixedly connected inside the high-efficiency sedimentation tank 2. The primary water distribution tank 1 goes over the primary water distribution wall 6 and enters the oil-isolating section. The horizontality of the top of the primary water distribution wall 6 is set to 1 / 1000, so that the water from the primary water distribution tank 1 passes through the primary water distribution wall 6 evenly, thereby distributing the water flow evenly. The water from the primary water distribution tank 1 flows from top to bottom into the high-efficiency sedimentation tank 2 through the gap between the primary water distribution wall 6 and the oil-isolating baffle 7. Furthermore, the top elevation of the oil-isolating baffle 7 exceeds the top elevation of the primary water distribution wall 6 by 100 mm, ensuring that all the incoming water passes through the oil-isolating section.

[0029] A sludge hopper 8 is integrally formed at the bottom of the high-efficiency sedimentation tank 2, a secondary water distribution wall 9 arranged in the vertical direction is fixedly connected between the high-efficiency sedimentation tank 2 and the clean water tank 3, a number of inclined pipes 10 are fixedly connected between the secondary water distribution wall 9 and the oil separation baffle 7, and a drain pipe 11 is connected to the side of the clean water tank 3 away from the high-efficiency sedimentation tank 2. An efficient inclined pipe 10 is arranged on the upper part of the high-efficiency sedimentation tank 2. The working principle of the inclined pipe 10 sedimentation is based on the principle of gravity sedimentation. When sewage enters the inclined pipe sedimentation tank, the water flow speed will slow down due to the design of the inclined pipe structure, which allows the suspended matter to have enough time to settle to the bottom. At the same time, the inclined pipe structure also increases the sedimentation area and improves the sedimentation efficiency. Through the action of the efficient inclined pipe, the particles are deposited in the sludge hopper 8 at the bottom of the high-efficiency sedimentation tank 2. The purified runoff flows from the top of the high-efficiency inclined pipe through the secondary water distribution wall 9 and then discharges into the clean water tank 3. The horizontality of the top of the secondary water distribution wall 9 is set to 1 / 1000, which plays a role in evenly distributing the incoming water. The clear water tank 3 is discharged into the surrounding ditch through the drainage pipe 11. Furthermore, the bottom elevation of the drainage pipe 11 is 300mm lower than the bottom elevation of the water inlet pipe 4. The sewage and sediment in the primary water distribution tank 1 and the sludge hopper 8 can be discharged regularly, and the oil pollutants collected in the oil separation section can be discharged regularly. The tank volume (excluding the sludge hopper) is determined according to the total flow of the initial runoff. The tank body adopts a steel-concrete structure.

[0030] In addition, a first-level throttling pipe 12 is fixedly connected to the middle of the first-level water distribution wall 6, one end of which is connected to the primary water distribution tank 1, and the other end of which is connected to the high-efficiency sedimentation tank 2; a second-level throttling pipe 13 is fixedly connected to the lower part of the second-level water distribution wall 9, one end of which is connected to the high-efficiency sedimentation tank 2, and the other end of the second-level throttling pipe 14 is connected to the clean water tank 3; a third-level throttling pipe 14 is connected to the lower part of the side of the clean water tank 3 away from the second-level water distribution wall 9. When the rainfall is over, the upper rainwater in the primary water distribution tank 1 is discharged into the high-efficiency sedimentation tank 2 according to the set flow through the first-level throttling pipe 12, and the purified rainwater in the high-efficiency sedimentation tank 2 is discharged into the clean water tank 3 through the second-level throttling pipe 13, and the clean rainwater in the clean water tank 3 is discharged into the external ditch through the third-level throttling pipe 14. The throttling pipe adjusts the flow rate by using different pipe diameters to ensure the hydraulic retention time of the sewage in the corresponding tank body.

[0031] After the pollutants on the bridge surface are washed away by the initial runoff, the later rainwater has reached the standard. However, the later rainwater still enters the pool through the drainage pipe. Due to the structure of the pool, the initial runoff has filled the pool, and the later clean rainwater can only flow through the top of the high-efficiency sedimentation tank and enter the clean water tank for discharge, without disturbing the water in the high-efficiency sedimentation tank.

[0032] The above embodiments are preferred implementation modes of the present invention and are only used to facilitate the explanation of the present invention. They are not intended to limit the present invention in any form. Any person with ordinary knowledge in the relevant technical field, if they do not depart from the scope of the technical features of the present invention, can make equivalent embodiments by partial changes or modifications to the technical contents disclosed in the present invention, and they still fall within the scope of the technical features of the present invention without departing from the technical features of the present invention.

Claims

1. A bridge deck runoff collection pool with oil separation and sedimentation function for highways, characterized in that: The invention comprises a primary water distribution tank (1), a high-efficiency sedimentation tank (2) and a clear water tank (3) which are arranged in sequence along the flow direction of runoff water from a bridge deck; a water inlet pipe (4) is connected to the primary water distribution tank (1) at a side away from the high-efficiency sedimentation tank (2); a water baffle (5) which is arranged opposite to the pipe mouth of the water inlet pipe (4) and is arranged obliquely is fixedly connected in the primary water distribution tank (1); a primary water distribution wall (6) which is arranged in a vertical direction is fixedly connected between the primary water distribution tank (1) and the high-efficiency sedimentation tank (2); An oil-isolating baffle (7) arranged in a vertical direction is fixedly connected inside the high-efficiency sedimentation tank (2), a sludge bucket (8) is integrally formed at the bottom of the high-efficiency sedimentation tank (2), a secondary water distribution wall (9) arranged in a vertical direction is fixedly connected between the high-efficiency sedimentation tank (2) and the clean water tank (3), a plurality of inclined pipes (10) are fixedly connected between the secondary water distribution wall (9) and the oil-isolating baffle (7), and a drainage pipe (11) is connected to a side of the clean water tank (3) away from the high-efficiency sedimentation tank (2).

2. A bridge deck runoff collection pool with oil separation and sedimentation function for highways according to claim 1, characterized in that: The top elevation of the oil-isolating baffle (7) exceeds the top elevation of the primary water distribution wall (6) by 100 mm.

3. The bridge deck runoff collection pool with oil separation and sedimentation function for highways according to claim 1 is characterized in that: The bottom elevation of the drainage pipe (11) is 300 mm lower than the bottom elevation of the water inlet pipe (4).

4. The bridge deck runoff collection pool with oil separation and sedimentation function for highways according to claim 1 is characterized in that: A first-level throttling pipe (12) is fixedly connected to the middle of the first-level water distribution wall (6), one end of the first-level throttling pipe (12) is connected to the primary water distribution tank (1), and the other end of the first-level throttling pipe (12) is connected to the high-efficiency sedimentation tank (2); A secondary throttling pipe (13) is fixedly connected to the lower part of the secondary water distribution wall (9), one end of the secondary throttling pipe (13) is connected to the high-efficiency sedimentation tank (2), and the other end of the secondary throttling pipe (13) is connected to the clean water tank (3); A third-level throttling pipe (14) is connected to the lower part of the side of the clear water tank (3) away from the second-level water distribution wall (9).

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