Rainwater treatment and accident emergency system for highway bridge (road) surface

Abstract

The invention belongs to the field of bridge (road) surface rainwater treatment, and particularly relates to an expressway bridge (road) surface rainwater treatment and accident emergency system, a water inlet unit is used for collecting and preliminarily monitoring rainwater, the rainwater is preliminarily filtered through a coarse filtering device, floating objects such as leaves and plastics are intercepted, and the collected rainwater is purified through a treatment unit; the grit chamber, the first sedimentation tank and the second sedimentation tank which are sequentially communicated are connected in series in a multi-stage manner to form a stepped treatment process of rainwater, so that most suspended solid particles in water are settled and separated under the action of gravity, natural purification of the water is realized, oil slick in the water is removed by utilizing the oleophylic characteristic of an oil removal material, and the oil removal efficiency is improved. A drainage control unit is adopted to be responsible for orderly drainage and emergency cut-off of purified water, a conventional drainage channel of an emptying pipe and an outer drainage pipe and an excessive drainage channel of an overflow pipe and the outer drainage pipe are arranged respectively, waterlogging of the system is prevented, and pollution diffusion is effectively prevented by arranging an electric valve on the outer drainage pipe.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of bridge (road) surface rainwater treatment, and particularly relates to a highway bridge (road) surface rainwater treatment and emergency system. BACKGROUND

[0002] On the highway, initial rainwater pollution and dangerous chemical transport vehicle leakage accidents are two major environmental risk sources. At the beginning of rainfall, rainwater washing the bridge surface or the road surface will carry a large amount of suspended particulate matter, grease, heavy metals and organic matter and other pollutants. If directly discharged, it will cause serious pollution to the surrounding water ecological environment. The commonly used treatment method at present is to set rainwater runoff pools and emergency pools for collecting leaked dangerous chemicals at intervals on both sides of the road. The common two-pool partition wall setting has a complex structure, large land occupation and high cost. Moreover, the rainwater runoff pool and the emergency pool rely on the city power supply, which is difficult to supply power in remote sections, has high cost and is not safe. In the long-term use process, the rainwater pool often evolves into an evaporation pool due to poor drainage, and the enrichment of pollutants forms black and odorous water bodies, which not only causes secondary environmental pollution and forms a safety hazard, but also completely loses the function of emergency. SUMMARY

[0003] The present application aims to provide a highway bridge (road) surface rainwater treatment and emergency system to solve the technical problem that the commonly used highway bridge (road) surface water treatment method at present is to set rainwater runoff pools and emergency pools for collecting leaked dangerous chemicals at intervals on both sides of the road. The common two-pool partition wall setting has a complex structure, large land occupation and high cost. Moreover, the rainwater runoff pool and the emergency pool rely on the city power supply, which is difficult to supply power in remote sections, has high cost and is not safe. In the long-term use process, the rainwater pool often evolves into an evaporation pool due to poor drainage, and the enrichment of pollutants forms black and odorous water bodies, which not only causes secondary environmental pollution and forms a safety hazard, but also completely loses the function of emergency.

[0004] To achieve the above-mentioned purpose, the specific technical scheme of the present application is as follows: The invention discloses a highway bridge (road) surface rainwater treatment and emergency system, which comprises a water inlet unit, a treatment unit, a drainage control unit and a solar power supply and control unit; the water inlet unit comprises a water inlet pipe and a water inlet channel; the water inlet pipe is used for collecting bridge (road) surface rainwater and leading the rainwater into the water inlet channel; the water inlet channel is sequentially provided with a coarse filter device, a pH on-line detector and an electric conductivity on-line detector along the water flow direction; the treatment unit comprises a sand settling tank, a first sedimentation tank and a second sedimentation tank; the sand settling tank is provided with a fine filter device at the inlet end; the sand settling tank is communicated with the first sedimentation tank through a first water passing hole; the first sedimentation tank and the second sedimentation tank are communicated through a second water passing hole; the sand settling tank is provided with oil absorption cotton as an oil removal material floating on the liquid surface; the drainage control unit comprises a drainage well, a drainage pipe, an overflow pipe and an external discharge pipe; the inlet ends of the drainage pipe and the overflow pipe are communicated with the second sedimentation tank, and the outlet ends are communicated with the external discharge pipe; the drainage pipe and the overflow pipe are both provided with a manual valve; the external discharge pipe is provided with an electric valve; the solar power supply and control unit comprises a solar equipment room; the solar equipment room is provided with a photovoltaic panel at the top; the solar equipment room is provided with a solar storage battery and a control cabinet; the photovoltaic panel supplies power to the solar storage battery; the solar storage battery and the control cabinet are electrically connected with the pH on-line detector, the electric conductivity on-line detector and the electric valve.

[0005] Further, the control cabinet is configured to receive the detection signals of the pH on-line detector and the electric conductivity on-line detector; when the detection signals are continuously abnormal, the electric valve is controlled to be closed; when the detection signals return to normal and the maintenance time reaches a preset value, the electric valve is controlled to return to the open state.

[0006] Further, the control cabinet is provided with a remote transmission control module, which supports real-time viewing of the detection data of the pH on-line detector and the electric conductivity on-line detector and the state of the electric valve on the mobile phone, and can remotely control the opening and closing of the electric valve.

[0007] Further, the control cabinet is further configured to send an alarm signal to the remote mobile phone when the detection signals are continuously abnormal.

[0008] Further, the filter pore size of the coarse filter device is 5mm; the filter pore size of the fine filter device is 1mm.

[0009] Further, the first water passing hole and the second water passing hole are both arranged in the middle and lower parts of the pool walls connected therewith, and the arrangement form is two rows and three columns.

[0010] Further, the total effective volume of the sand settling tank, the first sedimentation tank and the second sedimentation tank is 100-120m³.

[0011] The expressway bridge (road) surface rainwater treatment and emergency system has the following advantages: the water inlet unit is responsible for rainwater collection and preliminary monitoring, the rainwater is preliminarily filtered through the coarse filter device, large-size floating objects and particulate matters such as leaves and plastics are intercepted, the subsequent rainwater treatment is facilitated, the collected rainwater is purified through the treatment unit, the multi-stage series connection of the sand trap, the first sedimentation tank and the second sedimentation tank is used to form a ladder type treatment process of rainwater, most of the suspended solid particles in the water are separated and settled under the action of gravity, the natural purification of the water is realized, the oil removal material is used to remove the floating oil in the water, the drainage control unit is responsible for the orderly drainage and emergency interruption of the purified water, the conventional drainage passage with the emptying pipe and the overflow pipe and the excess drainage passage with the overflow pipe and the emptying pipe are separately arranged, the system is prevented from being flooded, the electric valve is arranged on the overflow pipe to effectively prevent the pollution from spreading, the efficient rainwater purification treatment process and the rapid drainage design ensure that the treated rainwater is drained in time, the secondary pollution problem that the traditional rainwater pool is evolved into a black and odorous water body due to long-term blockage and water accumulation is effectively avoided, and the pool body is kept empty at most of the time, and reliable emergency storage capacity is provided for the sudden dangerous chemical leakage accident at any time. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic diagram of the planar structure of the present application; Figure 2 It is a schematic diagram of the cross-sectional structure of the present application; Figure 3 It is a schematic diagram of the emptying pipe connection structure of the present application; Figure 4 It is a schematic diagram of the cross-sectional structure of the solar equipment room of the present application; Marked in the figure: 1, water inlet pipe; 2, water inlet channel; 21, coarse filter device; 22, pH online detector; 23, electric conductivity online detector; 3, sand trap; 31, fine filter device; 32, oil removal material; 33, first water passing hole; 4, first sedimentation tank; 41, second water passing hole; 5, second sedimentation tank; 6, drainage well; 61, emptying pipe; 62, manual valve; 63, overflow pipe; 64, electric valve; 65, overflow pipe; 7, solar equipment room; 71, photovoltaic panel; 72, solar battery; 73, control cabinet. DETAILED DESCRIPTION

[0013] In order to better understand the purpose, structure and function of the present application, the expressway bridge (road) surface rainwater treatment and emergency system of the present application is further described in detail below in combination with the drawings.

[0014] As Figures 1-4As shown, the present application is a highway bridge (road) surface rainwater treatment and emergency system, including water inlet unit, treatment unit, drainage control unit and solar power supply and control unit; the water inlet unit includes water inlet pipe 1, water inlet channel 2; the water inlet pipe 1 is used to collect the bridge (road) surface rainwater and lead into the water inlet channel 2, the water inlet channel 2 is sequentially provided with coarse filter device 21, pH on-line detector 22 and conductivity on-line detector 23 along the water flow direction; the treatment unit includes sand trap 3, first sedimentation tank 4 and second sedimentation tank 5; the sand trap 3 is provided with fine filter device 31 at the inlet end; the sand trap 3 and the first sedimentation tank 4 are communicated through the first water passing hole 33; the first sedimentation tank 4 and the second sedimentation tank 5 are communicated through the second water passing hole 41; the oil absorbing cotton is provided as oil removal material 32 in the sand trap 3 pool liquid surface; the drainage control unit includes drainage well 6, emptying pipe 61, overflow pipe 63 and external discharge pipe 65; the inlet ends of the emptying pipe 61 and the overflow pipe 63 are communicated with the second sedimentation tank 5 respectively, and the outlet ends are communicated with the external discharge pipe 65; the manual valves 62 are provided on the emptying pipe 61 and the overflow pipe 63; the electric valve 64 is provided on the external discharge pipe 65; the solar power supply and control unit includes solar equipment room 7; the photovoltaic panel 71 is provided on the top of the solar equipment room 7; the solar storage battery 72 and the control cabinet 73 are provided in the solar equipment room 7; the photovoltaic panel 71 supplies power for the solar storage battery 72, and the solar storage battery 72 and the control cabinet 73 are electrically connected between the pH on-line detector 22, the conductivity on-line detector 23 and the electric valve 64.

[0015] In combination Figures 1-4 As shown, the present system is arranged on the special site of one side of the highway, the water inlet pipe 1 of the system is connected with the vertical drainage pipe of the highway, for receiving the rainwater collected on the bridge (road) surface of the highway, the outlet of the external discharge pipe 65 of the system is connected to the existing drainage ditch or natural ditch near the highway, for discharging the treated rainwater, in use, when it rains, the rainwater on the bridge (road) surface of the highway enters the water inlet channel 2 through the water inlet pipe 1, is filtered through the coarse filter device 21, and is detected through the pH on-line detector 22 and the conductivity on-line detector 23, the water flow passes through the sand trap 3 through the water inlet channel 2, and is further filtered through the fine filter device 31, the oil pollution floating on the water surface is adsorbed by the oil removal material 32 arranged on the liquid surface in the sand trap 3, then the rainwater flows through the first sedimentation tank 4 and the second sedimentation tank 5 for sedimentation, the larger particles contained therein are removed by sinking to the bottom, and the treated clear water is discharged through the external discharge pipe 65 through the emptying pipe 61 and the electric valve 64 in the open state.

[0016] The system is composed of a sand trap 3, a first sedimentation tank 4, and a second sedimentation tank 5 in series to form a stepped treatment process of rainwater, so that most of the suspended solid particles in the water can be separated and settled under the action of gravity, realizing natural purification of the water, and using the oil-removing material 32 to remove the floating oil in the water, and using the drainage control unit to orderly discharge the purified water, and providing a conventional drainage passage with an emptying pipe 61-external discharge pipe 65 and an excess drainage passage with an overflow pipe 63-external discharge pipe 65 to prevent waterlogging in the system, through the efficient rainwater purification treatment process and rapid drainage design, to ensure that the treated rainwater is promptly emptied, effectively avoiding the secondary pollution problem of traditional rainwater pools due to long-term blockage and water accumulation evolving into “black and smelly water bodies”, and at the same time, the pool body remains empty most of the time, providing reliable emergency storage capacity for sudden dangerous chemical leakage accidents at any time.

[0017] The control cabinet 73 is configured to receive the detection signals of the pH online detector 22 and the conductivity online detector 23, and to control the electric valve 64 to be closed when the detection signals are continuously abnormal, and to control the electric valve 64 to be opened when the detection signals return to normal and maintain for a preset time, and to control the electric valve 64 to be closed when the pH online detector 22 and the conductivity online detector 23 detect that the water quality is continuously abnormal, judging that the inflowing liquid is a heavily polluted liquid such as a dangerous chemical, flushing water, etc., so as to prevent the pollution from spreading.

[0018] The control cabinet 73 is configured to receive the detection signals of the pH online detector 22 and the conductivity online detector 23, and to control the electric valve 64 to be closed when the detection signals are continuously abnormal, and to control the electric valve 64 to be opened when the detection signals return to normal and maintain for a preset time, and to control the electric valve 64 to be closed when the pH online detector 22 and the conductivity online detector 23 detect that the water quality is continuously abnormal, judging that the inflowing liquid is a heavily polluted liquid such as a dangerous chemical, flushing water, etc., so as to prevent the pollution from spreading.

[0019] The filter aperture of the coarse filtering device 21 is 5mm; the filter aperture of the fine filtering device 31 is 1mm, and the two-stage filtering system of 5mm and 1mm is formed by the coarse filtering device 21 and the fine filtering device 31, which is suitable for the rainwater pollutant characteristics on the highway, and effectively avoids the problems of easy clogging or poor filtering effect of a single filtering device through the filtering mode of grading, effectively avoids the clogging of the subsequent pipeline system by filtering most of the solid suspended matter, reduces the sedimentation burden of the grit chamber 3 and the first and second sedimentation tanks 4 and 5, and increases the efficiency of natural water purification.

[0020] The oil removal material 32 is oil-absorbing cotton, which floats on the water surface of the grit chamber 3, and is naturally floated on the water surface of the grit chamber 3 by using the physical property that the density of the oil-absorbing cotton is less than that of water, and the oil-absorbing cotton actively absorbs and collects the floating oil on the water surface by the lipophilicity, without any mechanical equipment and power source, without failure risk, and the staff only needs to replace it after a long time of use, so that the use and maintenance operation are simple.

[0021] As shown in Figure 2 The first water passing hole 33 and the second water passing hole 41 are both arranged in the middle and lower parts of the pool wall connected thereto, and are arranged in the form of two rows and three columns, so that the water in the pool body flows in the lower part, good static sinking conditions are created for the suspended solid particles, and the sedimentation and separation effect of the sedimentation tank is significantly improved, while the water flow in the pool is uniform, and the formation of a water flow dead zone is avoided.

[0022] The total effective volume of the grit chamber 3, the first sedimentation tank 4 and the second sedimentation tank 5 is accurately calculated to be 100-120m³, so as to balance the function and cost, and the volume range can effectively collect and process the standard initial rainwater volume, ensure that the pollutants and impurity particles in the rainwater are fully settled or absorbed, and provide sufficient emergency buffer capacity for small-scale hazardous chemical leakage accidents, thereby avoiding the problems of high cost and large occupied area caused by the large pool volume (hundreds or even thousands of cubic meters) in the traditional scheme.

[0023] It can be understood that the present application is described by some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the present application. In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the present application without departing from the spirit and scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are within the scope of the present application.

Claims

1. A highway bridge pavement rainwater treatment and emergency system for accidents, characterized in that, The application relates to a bridge road surface rainwater treatment device, which comprises a water inlet unit, a treatment unit, a drainage control unit and a solar power supply and control unit; the water inlet unit comprises a water inlet pipe (1) and a water inlet channel (2); the water inlet pipe (1) is used for collecting bridge (road) surface rainwater and guiding the rainwater into the water inlet channel (2); the water inlet channel (2) is sequentially provided with a coarse filter device (21), a pH on-line detector (22) and an electric conductivity on-line detector (23) along a water flow direction; the treatment unit comprises a sand settling tank (3), a first sedimentation tank (4) and a second sedimentation tank (5); the sand settling tank (3) is provided with a fine filter device (31) at an inlet end; the sand settling tank (3) and the first sedimentation tank (4) are communicated through a first water passing hole (33); the first sedimentation tank (4) and the second sedimentation tank (5) are communicated through a second water passing hole (41); the sand settling tank (3) is provided with oil absorption cotton as an oil removal material (32) floating on a liquid surface in the tank; the drainage control unit comprises a drainage well (6), a drainage pipe (61), an overflow pipe (63) and an external drainage pipe (65); the inlet ends of the drainage pipe (61) and the overflow pipe (63) are respectively communicated with the second sedimentation tank (5), and the outlet ends are communicated with the external drainage pipe (65); the drainage pipe (61) and the overflow pipe (63) are both provided with a manual valve (62); the external drainage pipe (65) is provided with an electric valve (64); the solar power supply and control unit comprises a solar equipment room (7); the solar equipment room (7) is provided with a photovoltaic panel (71) at the top; the solar equipment room (7) is provided with a solar storage battery (72) and a control cabinet (73) inside; the photovoltaic panel (71) supplies power for the solar storage battery (72), and the solar storage battery (72) and the control cabinet (73) are electrically connected with the pH on-line detector (22), the electric conductivity on-line detector (23) and the electric valve (64).

2. The expressway bridge (road) surface rainwater treatment and emergency system for accidents according to claim 1, characterized in that, The control cabinet (73) is arranged to receive detection signals of the pH on-line detector (22) and the electric conductivity on-line detector (23), to control the electric valve (64) to be closed when the detection signals are continuously abnormal, and to control the electric valve (64) to be restored to an open state when the detection signals are restored to normal and the maintaining time reaches a preset value.

3. The highway bridge pavement rainwater treatment and emergency system of claim 2, wherein, The control cabinet (73) is internally provided with a remote transmission control module, supports real-time viewing of detection data of the pH on-line detector (22) and the electric conductivity on-line detector (23) and a state of the electric valve (64) on a mobile phone terminal, and can remotely open and close the electric valve (64).

4. The highway bridge pavement rainwater treatment and emergency system of claim 3, wherein, The control cabinet (73) is further arranged to send an alarm signal to the remote mobile phone terminal when the detection signals are continuously abnormal.

5. The highway bridge pavement rainwater treatment and emergency system of claim 1, wherein, The filter pore diameter of the coarse filter device (21) is 5 mm; and the filter pore diameter of the fine filter device (31) is 1 mm.

6. The highway bridge pavement rainwater treatment and emergency system of claim 1, wherein The first water passing hole (33) and the second water passing hole (41) are both arranged in the middle and lower parts of the pool walls connected therewith, and are arranged in the form of two rows and three columns.

7. The highway bridge pavement rainwater treatment and emergency system of claim 1, wherein, The total effective volume of the sand settling tank (3), the first sedimentation tank (4) and the second sedimentation tank (5) is arranged to be 100-120 m³.

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