Emergency treatment system for dangerous chemical leakage of cross-river highway bridge

Abstract

The utility model belongs to the road and bridge engineering technical field, concretely relates to a kind of dangerous chemical leakage emergency handling system of river-crossing highway bridge.The lower outer side of accident emergency pool is equipped with blow-off pipe, and blow-off control valve is installed on blow-off pipe;The inner chamber bottom of oil separation sedimentation tank is provided with filter filler layer, and the lower outer side of oil separation sedimentation tank is equipped with drain pipe, and drain control valve is installed on drain pipe;The water inlet end of drain main pipe is connected with bridge runoff drain outlet;The side wall of drain main pipe is connected with runoff emergency drain pipe, and runoff emergency drain control valve is installed on runoff emergency drain pipe;The inner chamber of oil separation sedimentation tank is communicated with the water outlet end of drain main pipe through first drain branch pipe, and first control valve is installed on first drain branch pipe;The inner chamber of accident emergency pool is communicated with the water outlet end of drain main pipe through second drain branch pipe, and second control valve is installed on second drain branch pipe.Avoid to carry out regular emptying to accident pool to maintain the emergency disposal capacity of accident waste liquid.

Description

Technical Field

[0001] This utility model belongs to the field of road and bridge engineering technology, specifically relating to an emergency response system for hazardous chemical leaks on cross-river highway bridges. Background Technology

[0002] When a vehicle carrying hazardous liquid chemicals is involved in an accident on a bridge crossing a river, the leakage of these chemicals can easily pollute the river and damage the ecosystem. The current practice involves constructing emergency response pools. When hazardous liquid chemicals leak from a transport vehicle onto a bridge, they are collected in these pools via pipelines and then temporarily transferred using vacuum trucks. However, since both rainwater and hazardous liquid chemicals enter these pools, and rainfall is a major component of runoff, they often accumulate significant amounts of rainwater. When the pools are full of rainwater, they need to be emptied promptly to maintain capacity for emergency disposal of spilled liquids, which presents disadvantages such as operational inconvenience and slow response time. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an emergency treatment system for hazardous chemical leaks on cross-river highway bridges, which avoids the need to regularly empty the emergency pool to maintain the emergency treatment capacity for accident waste liquid.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an emergency treatment system for hazardous chemical spills on cross-river highway bridges, including an emergency pool, an oil separator sedimentation tank, and a drainage main;

[0005] The emergency pool is equipped with a sewage pipe connected to its own inner cavity on the lower outer side, and a sewage control valve is installed on the sewage pipe; the bottom of the inner cavity of the oil-water separator is provided with a filter packing layer, and a drain pipe is installed on the lower outer side of the oil-water separator, and a drain control valve is installed on the drain pipe.

[0006] The inlet of the main drainage pipe is connected to the bridge runoff drainage outlet; an emergency runoff drainage pipe is connected to the side wall of the main drainage pipe, and an emergency runoff drainage control valve is installed on the emergency runoff drainage pipe.

[0007] The inner cavity of the oil-water separator is connected to the outlet of the main drainage pipe through a first drainage branch pipe, and a first control valve is installed on the first drainage branch pipe; the inner cavity of the emergency pool is connected to the outlet of the main drainage pipe through a second drainage branch pipe, and a second control valve is installed on the second drainage branch pipe.

[0008] Furthermore, multiple emergency response pools are provided, and the multiple emergency response pools are arranged adjacent to each other; adjacent emergency response pools are connected by a drainage pipe.

[0009] Furthermore, the drainage pipe includes an emergency waste liquid outlet pipe and an emergency waste liquid inlet pipe arranged vertically and in pairs.

[0010] One end of each of the emergency wastewater outlet pipe and the emergency wastewater inlet pipe is connected to the inner cavity of one of the emergency emergency pools; the other end of each of the emergency wastewater outlet pipe and the emergency wastewater inlet pipe is connected to the inner cavity of the adjacent emergency emergency pool; the emergency wastewater inlet direction L2 is opposite to the emergency wastewater outlet direction L1; along the emergency wastewater outlet direction L1, the elevation of the preceding emergency emergency pool is higher than the elevation of the adjacent following emergency emergency pool;

[0011] A third control valve is installed on the inlet pipe of the accident waste liquid;

[0012] The outlet of the main drainage pipe is connected to the inner cavity of the first emergency pool along the inlet direction L2 of the accident waste liquid through a second drainage branch pipe.

[0013] The sewage pipe is installed on the first emergency pool along the inlet direction L2 of the accident waste liquid.

[0014] Furthermore, a first flow meter is installed on the inlet pipe of the accident waste liquid.

[0015] Furthermore, a one-way valve is installed on the emergency waste liquid outlet pipe, and the emergency waste liquid outlet pipe discharges water in one direction along the emergency waste liquid outlet direction L1 through the one-way valve.

[0016] Furthermore, it also includes a first backup drainage branch pipe, a second backup drainage branch pipe, and a connecting pipe;

[0017] The outlet of the main drainage pipe is connected to the inner cavity of the oil-water separator sedimentation tank through a first backup drainage branch pipe, and a first backup control valve is installed on the first backup drainage branch pipe.

[0018] The outlet of the main drainage pipe is connected to the inner cavity of the first emergency pool along the inlet direction L2 of the emergency waste liquid through a second backup drainage branch pipe, and a second backup control valve is installed on the second backup drainage branch pipe.

[0019] The first drainage branch pipe is connected to the second drainage branch pipe to form a main drainage branch, and the first standby drainage branch pipe is connected to the second standby drainage branch to form a standby drainage branch.

[0020] One end of the connecting pipe is connected to the main drainage branch, and the other end of the connecting pipe is connected to the backup drainage branch; the connection point between the connecting pipe and the main drainage branch is located between the first control valve and the second control valve, and the connection point between the connecting pipe and the backup drainage branch is located between the first backup control valve and the second backup control valve; a fourth control valve is installed on the connecting pipe.

[0021] Furthermore, it also includes manifolds;

[0022] The outlet of the second drainage branch pipe and the outlet of the second backup drainage branch pipe are both connected to the inlet of the manifold; the outlet of the manifold is arranged corresponding to the inner cavity of the first emergency pool along the inlet direction L2 of the emergency waste liquid.

[0023] A second flow meter is installed on the manifold.

[0024] Furthermore, it also includes a level gauge, which is installed in each of the aforementioned emergency pools.

[0025] Furthermore, it also includes controllers and displays with electrical connections;

[0026] The runoff emergency drainage control valve, drainage control valve, first control valve and second control valve are all pneumatic valves or solenoid valves; the sewage control valve, third control valve, fourth control valve, first standby control valve and second standby control valve are all manual valves.

[0027] The control chip of the first flow meter, the control chip of the second flow meter, the control chip of the level gauge, the runoff emergency drainage control valve, the drainage control valve, the first control valve and the second control valve are all electrically connected to the controller.

[0028] Furthermore, both the emergency response pool and the oil-water separation sedimentation tank are equipped with railings on their tops.

[0029] Compared with existing technologies, the advantages of this invention are: This invention provides an emergency response system for hazardous chemical spills on cross-river highway bridges, eliminating the need for periodic emptying of accident pools to maintain emergency disposal capacity for accident waste liquids. It has advantages such as high reliability, convenient operation, and fast response speed. Attached Figure Description

[0030] Figure 1 This is a top view of the structure of this utility model;

[0031] Figure 2 This is a side view of two adjacent emergency pools in this utility model (wherein, the first flow meter is not shown).

[0032] Attached reference numerals: 1-Emergency pool; 101-Sewage control valve; 2-Oil separator sedimentation tank; 201-Drainage control valve; 202-Filter packing layer; 3-Main drainage pipe; 4-Emergency wastewater outlet pipe; 5-Emergency wastewater inlet pipe; 501-Third control valve; 502-First flow meter; 6-Runoff emergency drainage pipe; 601-Runoff emergency drainage control valve; 7-First drainage branch pipe; 701-First control valve; 8-Second drainage branch pipe; 801-Second control valve; 9-First backup drainage branch pipe; 901-First backup control valve; 10-Second backup drainage branch pipe; 1001-Second backup control valve; 11-Connecting pipe; 1101-Fourth control valve; 12-Manifold; 1201-Second flow meter; 13-Controller; 14-Level gauge; 15-Power generation and energy storage device; 16-Fence; 17-Walkway; 18-Control room. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] An emergency response system for hazardous chemical spills on a cross-river highway bridge includes an emergency response pool 1, an oil-water separator and sedimentation tank 2, and a main drainage pipe 3. A drain pipe connected to the inner cavity of the emergency response pool 1 is installed on its lower outer side, and a drain control valve 101 is installed on the drain pipe. A filter media layer 202 is installed at the bottom of the inner cavity of the oil-water separator and sedimentation tank 2, and a drain pipe with a drain control valve 201 is installed on its lower outer side. The inlet end of the main drainage pipe 3 is connected to the bridge... The runoff outlet is connected; a runoff emergency drain pipe 6 is connected to the side wall of the main drain pipe 3, and a runoff emergency drain control valve 601 is installed on the runoff emergency drain pipe 6; the inner cavity of the oil separator sedimentation tank 2 is connected to the outlet of the main drain pipe 3 through a first drain branch pipe 7, and a first control valve 701 is installed on the first drain branch pipe 7; the inner cavity of the emergency pool 1 is connected to the outlet of the main drain pipe 3 through a second drain branch pipe 8, and a second control valve 801 is installed on the second drain branch pipe 8.

[0035] The bottom of the inner cavity of the oil-water separator sedimentation tank 2 is equipped with a filter packing layer 202 to filter the runoff flowing into the oil-water separator sedimentation tank 2, so as to ensure that the water discharged from the drain pipe is relatively clean. The emergency accident pool 1 is used to collect and temporarily store accident waste liquid on the bridge deck of the cross-river bridge.

[0036] Preferably, multiple emergency response pools 1 are provided, and the multiple emergency response pools 1 are arranged adjacent to each other in pairs; two adjacent emergency response pools 1 are connected by a drainage pipe. By providing multiple emergency response pools 1, the collection capacity of emergency waste liquid is increased.

[0037] The drainage pipe may consist only of an emergency wastewater inlet pipe. Preferably, the drainage pipe includes an emergency wastewater outlet pipe 4 and an emergency wastewater inlet pipe 5 arranged vertically and in pairs. One end of each of the emergency wastewater outlet pipe 4 and the emergency wastewater inlet pipe 5 is connected to the inner cavity of one of the emergency emergency pools 1. The other end of each of the emergency wastewater outlet pipe 4 and the emergency wastewater inlet pipe 5 is connected to the inner cavity of the adjacent emergency emergency pool 1. The emergency wastewater inlet direction L2 is opposite to the emergency wastewater outlet direction L1. Along the emergency wastewater outlet direction L1, the elevation of the preceding emergency emergency pool 1 is higher than the elevation of the adjacent following emergency emergency pool 1. A third control valve 501 is installed on the emergency wastewater inlet pipe 5. The outlet end of the main drainage pipe 3 is connected to the inner cavity of the first emergency emergency pool 1 along the emergency wastewater inlet direction L2 through a second drainage branch pipe 8. The sewage pipe is installed on the first emergency emergency pool 1 along the emergency wastewater inlet direction L2.

[0038] Along the direction of the emergency waste liquid inlet L2, after the previous emergency pool 1 is filled with emergency waste liquid, the emergency waste liquid enters the adjacent next emergency pool 1 through the emergency waste liquid inlet pipe 5, and so on.

[0039] Preferably, a first flow meter 502 is installed on the emergency wastewater inlet pipe 5. By setting the first flow meter 502, the flow rate of the emergency wastewater entering the adjacent emergency pool 1 is monitored.

[0040] Preferably, a one-way valve 401 is installed on the emergency waste liquid outlet pipe 4, and the emergency waste liquid outlet pipe 4 discharges water in one direction along the emergency waste liquid discharge direction L1 through the one-way valve 401. By setting the one-way valve 401, the one-way flow of emergency waste liquid is ensured.

[0041] To improve system reliability, the system also includes a first backup drainage branch pipe 9, a second backup drainage branch pipe 10, and a connecting pipe 11. The outlet end of the main drainage pipe 3 is connected to the inner cavity of the oil-water separator sedimentation tank 2 via the first backup drainage branch pipe 9, and a first backup control valve 901 is installed on the first backup drainage branch pipe 9. The outlet end of the main drainage pipe 3 is connected to the inner cavity of the first emergency pool 1 along the emergency wastewater inlet direction L2 via the second backup drainage branch pipe 10, and a second backup control valve 1001 is installed on the second backup drainage branch pipe 10. The first drainage branch pipe 7 and The second drainage branch pipe 8 is connected to form the main drainage branch, and the first backup drainage branch pipe 9 is connected to the second backup drainage branch pipe 10 to form the backup drainage branch; one end of the connecting pipe 11 is connected to the main drainage branch, and the other end of the connecting pipe 11 is connected to the backup drainage branch; the connection point of the connecting pipe 11 with the main drainage branch is located between the first control valve 701 and the second control valve 801, and the connection point of the connecting pipe 11 with the backup drainage branch is located between the first backup control valve 901 and the second backup control valve 1001; a fourth control valve 1101 is installed on the connecting pipe 11.

[0042] By setting up a first backup drainage branch pipe 9, a first backup control valve 901, a second backup drainage branch pipe 10, a second backup control valve 1001, a connecting pipe 11, and a fourth control valve 1101, the system can be guaranteed to operate stably and reliably when the first control valve 701 or the second control valve 801 fails.

[0043] The types of the sewage control valve 101, the first standby control valve 901, the second standby control valve 1001, the third control valve 501, the fourth control valve 1101, the runoff emergency drainage control valve 601, the drainage control valve 201, the first control valve 701, and the second control valve 801 are available in a variety of options:

[0044] In Example 1, the sewage control valve 101, the first backup control valve 901, the second backup control valve 1001, the third control valve 501, the fourth control valve 1101, the runoff emergency drainage control valve 601, the drainage control valve 201, the first control valve 701, and the second control valve 801 are all solenoid valves.

[0045] In Example 2, the sewage control valve 101, the first backup control valve 901, the second backup control valve 1001, the third control valve 501, the fourth control valve 1101, the runoff emergency drainage control valve 601, the drainage control valve 201, the first control valve 701, and the second control valve 801 are all pneumatic valves.

[0046] In Example 3, the sewage control valve 101, the first backup control valve 901, the second backup control valve 1001, the third control valve 501, the fourth control valve 1101, the runoff emergency drainage control valve 601, the drainage control valve 201, the first control valve 701, and the second control valve 801 are all manual valves.

[0047] In Example 4, the runoff emergency drainage control valve 601, drainage control valve 201, first control valve 701 and second control valve 801 are all pneumatic valves; the sewage control valve 101, third control valve 501, fourth control valve 1101, first backup control valve 901 and second backup control valve 1001 are all manual valves.

[0048] In Example 5, the runoff emergency drainage control valve 601, drainage control valve 201, first control valve 701 and second control valve 801 are all solenoid valves; the sewage control valve 101, third control valve 501, fourth control valve 1101, first backup control valve 901 and second backup control valve 1001 are all manual valves.

[0049] Example 4 is the optimal implementation method.

[0050] Preferably, it also includes a manifold 12; the outlet ends of the second drainage branch pipe 8 and the second backup drainage branch pipe 10 are both connected to the inlet end of the manifold 12; the outlet end of the manifold 12 is arranged corresponding to the inner cavity of the first emergency pool 1 along the inlet direction L2 of the emergency waste liquid; a second flow meter 1201 is installed on the manifold 12. The flow rate of the emergency waste liquid flowing into the emergency pool 1 is monitored by the second flow meter 1201.

[0051] Preferably, the system also includes a level gauge 14, which is installed in each of the emergency response pools 1. The level gauge 14 can be a mechanical level gauge, and is preferably a radar level gauge with a control chip.

[0052] Preferably, the system also includes an electrically connected controller 13 and a display; the runoff emergency drainage control valve 601, drainage control valve 201, first control valve 701, and second control valve 801 are all pneumatic valves or solenoid valves; the sewage control valve 101, third control valve 501, fourth control valve 1101, first backup control valve 901, and second backup control valve 1001 are all manual valves; the control chips of the first flow meter 502, the second flow meter 1201, the level gauge 14, the runoff emergency drainage control valve 601, drainage control valve 201, first control valve 701, and second control valve 801 are all electrically connected to the controller 13. The controller 13 controls the opening and closing of the runoff emergency drainage control valve 601, drainage control valve 201, first control valve 701, and second control valve 801. The level gauge 14 sends the detected level signal to the controller 13. The controller 13 compares the detected level value with a preset level threshold. When the detected level value is greater than the preset level threshold, the controller 13 controls the second control valve 801 to close. The controller 13 also sends the level information to the display for display. The first flow meter 502 sends the detected first emergency waste liquid flow signal to the controller 13, and the second flow meter 1201 sends the detected second emergency waste liquid flow signal to the controller 13. The controller 13 sends the first and second emergency waste liquid flow information to the display for display.

[0053] Controller 13 is a PLC programmable controller or a microcontroller.

[0054] The controller 13 is located in the control room 18.

[0055] Preferably, both the emergency pool 1 and the oil-water separator sedimentation tank 2 are equipped with railings 16 on their tops.

[0056] Preferably, it also includes a walkway 17 located between two adjacent emergency pools 1, one end of which is connected to the upper side wall of one of the emergency pools 1, and the other end is connected to the upper side wall of the other adjacent emergency pool 1.

[0057] The power generation and energy storage device 15 provides electrical energy to this system, which is existing technology. Specifically, the power generation and energy storage device 15 includes a power generation module and an energy storage module electrically connected. The power generation module converts solar or wind energy into electrical energy, and the energy storage module stores the electrical energy and provides electrical energy to this system. The power generation module can be a wind power generation module and / or a solar power generation module.

[0058] The work process is as follows:

[0059] (1) Under normal working conditions, no hazardous chemical liquid leakage accidents occurred on the bridge deck.

[0060] The fourth control valve 1101, the first control valve 701, the drainage control valve 201, and the third control valve 501 are in the open state, while the runoff emergency drainage control valve 601, the second control valve 801, the first standby control valve 901, the second standby control valve 1001, and the sewage control valve 101 are in the closed state. Bridge deck runoff flows into the oil-water separator sedimentation tank 2 through the main drainage pipe 3, the connecting pipe 11, and the first drainage branch pipe 7. After being treated by the filter media layer 202, it is discharged from the drainage pipe. By replacing the filter media layer 202, good runoff treatment function is ensured, avoiding the need for cleaning the inner cavity of the oil-water separator sedimentation tank 2 and saving manpower. Under normal operating conditions, the emergency pool 1 is always empty.

[0061] (2) In the event of an accident, a hazardous chemical liquid leak occurs on the bridge deck.

[0062] The runoff emergency drainage control valve 601, the first control valve 701, the drainage control valve 201, the first standby control valve 901, the second standby control valve 1001, and the sewage control valve 101 are in the closed state, while the fourth control valve 1101, the second control valve 801, and the third control valve 501 are in the open state, discharging the accident waste liquid into the accident emergency pool 1.

[0063] After the accident waste liquid on the bridge surface is cleaned by firefighting flushing, the second control valve 801 is closed. The runoff emergency drainage control valve 601 is opened to directly discharge the clean bridge surface runoff through the runoff emergency drainage pipe 6, avoiding mixing with the accident waste liquid in the accident emergency pool 1, which would increase the amount of waste liquid to be disposed of and the risk of spillage.

[0064] After the accident leak is dealt with, open the sewage control valve 101 and empty the accident waste liquid in the emergency pool 1 by using a sewage suction truck or sewage suction pump.

[0065] (3) When the first control valve 701 fails to open, the first backup control valve 901 is opened, allowing the runoff to flow into the oil-water separator sedimentation tank 2 through the first backup drain branch pipe 9. When the second control valve 801 fails to open, the second backup control valve 1001 is opened, allowing the emergency waste liquid to flow into the emergency pool 1 through the second backup drain branch pipe 10. When the accident is resolved and the second control valve 801 fails to close, it is closed through the fourth control valve 1101.

[0066] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. All equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. An emergency response system for hazardous chemical spills from a cross-river highway bridge, characterized in that: It includes an emergency pool (1), an oil separator and sedimentation tank (2), and a main drainage pipe (3); The emergency pool (1) is equipped with a sewage pipe connected to its own inner cavity on the lower outer side, and a sewage control valve (101) is installed on the sewage pipe; the bottom of the inner cavity of the oil-water separator (2) is provided with a filter packing layer (202), and a drain pipe is installed on the lower outer side of the oil-water separator (2), and a drain control valve (201) is installed on the drain pipe. The inlet end of the main drainage pipe (3) is connected to the bridge runoff drainage outlet; an emergency runoff drainage pipe (6) is connected to the side wall of the main drainage pipe (3), and an emergency runoff drainage control valve (601) is installed on the emergency runoff drainage pipe (6). The inner cavity of the oil-water separator (2) is connected to the outlet of the main drain pipe (3) through a first drain branch pipe (7), and a first control valve (701) is installed on the first drain branch pipe (7); the inner cavity of the emergency pool (1) is connected to the outlet of the main drain pipe (3) through a second drain branch pipe (8), and a second control valve (801) is installed on the second drain branch pipe (8).

2. The emergency response system for hazardous chemical spills on cross-river highway bridges as described in claim 1, characterized in that: Multiple emergency pools (1) are provided, and the multiple emergency pools (1) are arranged in pairs adjacent to each other; two adjacent emergency pools (1) are connected by a drainage pipe.

3. The emergency response system for hazardous chemical spills on cross-river highway bridges as described in claim 2, characterized in that: The drainage pipe includes an emergency waste liquid outlet pipe (4) and an emergency waste liquid inlet pipe (5) arranged vertically and in pairs. One end of the accident wastewater outlet pipe (4) and the accident wastewater inlet pipe (5) are connected to the inner cavity of one of the accident emergency pools (1); the other end of the accident wastewater outlet pipe (4) and the accident wastewater inlet pipe (5) are connected to the inner cavity of the adjacent other accident emergency pool (1); the accident wastewater inlet direction L2 is opposite to the accident wastewater outlet direction L1; along the accident wastewater outlet direction L1, the elevation of the previous accident emergency pool (1) is higher than the elevation of the adjacent next accident emergency pool (1); A third control valve (501) is installed on the accident waste liquid inlet pipe (5); The outlet of the main drainage pipe (3) is connected to the inner cavity of the first emergency pool (1) along the inlet direction L2 of the accident waste liquid through the second drainage branch pipe (8). The sewage pipe is installed on the first emergency pool (1) along the inlet direction L2 of the accident waste liquid.

4. The emergency response system for hazardous chemical spills on cross-river highway bridges as described in claim 3, characterized in that: The first flow meter (502) is installed on the inlet pipe (5) of the accident waste liquid.

5. The emergency response system for hazardous chemical spills on cross-river highway bridges as described in claim 3, characterized in that: A one-way valve (401) is installed on the accident waste liquid outlet pipe (4), and the accident waste liquid outlet pipe (4) discharges water in one direction along the accident waste liquid outlet direction L1 through the one-way valve (401).

6. The emergency response system for hazardous chemical spills on cross-river highway bridges as described in claim 4, characterized in that: It also includes a first backup drainage branch pipe (9), a second backup drainage branch pipe (10), and a connecting pipe (11). The outlet of the main drainage pipe (3) is connected to the inner cavity of the oil-water separator sedimentation tank (2) through the first backup drainage branch pipe (9), and the first backup control valve (901) is installed on the first backup drainage branch pipe (9). The outlet of the main drainage pipe (3) is connected to the inner cavity of the first emergency pool (1) along the inlet direction L2 of the emergency waste liquid through a second backup drainage branch pipe (10), and a second backup control valve (1001) is installed on the second backup drainage branch pipe (10). The first drainage branch pipe (7) is connected to the second drainage branch pipe (8) and forms a main drainage branch. The first spare drainage branch pipe (9) is connected to the second spare drainage branch pipe (10) and forms a spare drainage branch. One end of the connecting pipe (11) is connected to the main drainage branch, and the other end of the connecting pipe (11) is connected to the backup drainage branch; the connection point between the connecting pipe (11) and the main drainage branch is located between the first control valve (701) and the second control valve (801), and the connection point between the connecting pipe (11) and the backup drainage branch is located between the first backup control valve (901) and the second backup control valve (1001); a fourth control valve (1101) is installed on the connecting pipe (11).

7. The emergency response system for hazardous chemical spills on cross-river highway bridges as described in claim 6, characterized in that: It also includes manifold (12); The outlet end of the second drainage branch pipe (8) and the outlet end of the second backup drainage branch pipe (10) are both connected to the inlet end of the manifold (12); the outlet end of the manifold (12) is arranged corresponding to the inner cavity of the first emergency pool (1) along the inlet direction L2 of the accident waste liquid. A second flow meter (1201) is installed on the manifold (12).

8. The emergency response system for hazardous chemical spills on cross-river highway bridges as described in claim 7, characterized in that: It also includes a level gauge (14), which is installed in each of the emergency pools (1).

9. The emergency response system for hazardous chemical spills on cross-river highway bridges as described in claim 8, characterized in that: It also includes an electrically connected controller (13) and a display; The runoff emergency drainage control valve (601), drainage control valve (201), first control valve (701) and second control valve (801) are all pneumatic valves or solenoid valves; the sewage control valve (101), third control valve (501), fourth control valve (1101), first backup control valve (901) and second backup control valve (1001) are all manual valves. The control chip of the first flow meter (502), the control chip of the second flow meter (1201), the control chip of the level gauge (14), the runoff emergency drainage control valve (601), the drainage control valve (201), the first control valve (701) and the second control valve (801) are all electrically connected to the controller (13).

10. The emergency response system for hazardous chemical spills on cross-river highway bridges as described in claim 1, characterized in that: Both the emergency pool (1) and the oil-water separator (2) are equipped with railings (16) on their tops.

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