Rainwater and accident water integrated management system and management method

Abstract

The application provides a rainwater and accident water comprehensive management system and management method, and the system comprises a first automatic valve, a monitoring well, a second automatic valve, a total discharge opening water storage monitoring pool, a third automatic valve, a flow meter, a fire pump state acquisition unit and a fourth automatic valve. The monitoring well is provided with a first online monitoring device, the second automatic valve is interlocked with monitoring data of the first online monitoring device; the total discharge opening water storage monitoring pool is provided with a second online monitoring device, the third automatic valve is interlocked with monitoring data of the second online monitoring device; and the fourth automatic valve is interlocked with flow data of the flow meter and a fire state indication signal of the fire pump state acquisition unit. The management system can automatically switch the water flow path according to the real-time monitoring data, improve the automation degree, reduce the occurrence of misoperation, missed operation and delayed operation, improve the response speed and operation stability, maximize the realization of pipe network resource sharing, effectively reduce the construction period engineering investment and operation cost.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology in the chemical industry, and in particular to a comprehensive management system and method for rainwater and emergency water. Background Technology

[0002] In the production and operation of chemical enterprises, the collection, transportation, and disposal of rainwater, sewage, and emergency water typically rely on on-site operators for critical operations such as valve switching, pump start-up and shutdown, and discharge path selection. Due to the complex and variable on-site conditions and the influence of experience level and workload on manual operation, errors, delays, or omissions are prone to occur, leading to problems such as incomplete separation of rainwater and sewage and untimely disposal of emergency water. If rainwater or mixed water is discharged into the municipal pipe network without adequate treatment, water quality abnormalities or pollutant exceedances may occur, resulting in environmental pollution and increased emergency response costs.

[0003] On the other hand, with the continuous improvement of informatization and automation levels in the chemical industry, more and more enterprises are introducing technologies such as online monitoring, automatic control, and data acquisition and storage into their production and public works systems to improve the operational stability and management sophistication of environmental protection facilities. However, the following problems still exist in current practices for rainwater and emergency water management: (1) The daily operation of the rainwater and sewage system is still mainly based on manual operation, such as manually switching valves, judging the discharge path based on experience, and manually recording the operation status. The overall automation level of the system is not high. Under this mode, the operation stability is insufficient, it is difficult to ensure the accuracy and timeliness of key operations, and it is easy to have slow response or even missing operation in sudden working conditions or at night, holidays, etc.

[0004] (2) Traditional rainwater and emergency water pipe networks mostly adopt the engineering mode of separate network laying. In order to meet the drainage needs under different working conditions, multiple independent pipelines and supporting facilities are often built. This mode results in high investment costs during the construction period and a large amount of site and pipe gallery resources occupied. During the operation phase, the number of management objects of each pipeline and supporting pool, pump and valve increases, and the daily inspection, switching and maintenance process becomes complicated, which increases the difficulty of operation and management and labor costs.

[0005] (3) In the existing system, key node operations often lack automatic recording and traceability mechanisms. The flow direction of rainwater and emergency water, valve opening and closing status, pump start and stop times, and related operating parameters mostly rely on manual recording or post-event supplementation, making it difficult to guarantee data integrity and accuracy. At the same time, core operational data such as online monitoring of pollutants, flow data, and liquid level data have not been systematically archived and managed. As a result, once the enterprise's rainwater or mixed water is discharged into the municipal pipe network and water quality abnormalities exceed standards, there is a lack of complete, continuous, and traceable data support, making it difficult to identify the problem in a timely and accurate manner.

[0006] Therefore, how to design a rainwater and emergency water management system with a high degree of automation and low system construction and operation costs is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] In view of the technical problems of low automation and high system construction and operation costs in the existing rainwater and emergency water management, the purpose of this invention is to provide a comprehensive rainwater and emergency water management system and method, which aims to improve the degree of automation and reduce the system construction and operation costs.

[0008] A comprehensive rainwater and emergency water management system, comprising: First self-controlled valve; The monitoring well is located downstream of the first self-controlled valve and is equipped with a first online monitoring device, which is used to monitor one or more pollutants in the rainwater. The second automatic control valve is interlocked with the monitoring data of the first online monitoring device; when all monitored pollutant data are qualified, the second automatic control valve opens and the first automatic control valve closes. The main outlet water storage monitoring tank is located downstream of the second automatic control valve and is equipped with a second online monitoring device, which is used to monitor one or more pollutants in the water. The third automatic control valve is interlocked with the monitoring data of the second online monitoring device; when all monitored pollutant data are qualified, the third automatic control valve opens to direct the water flow to the municipal pipe network. A flow meter is installed upstream of the first self-controlled valve to acquire flow data; Fire pump status acquisition unit acquires fire status indication signals; The fourth automatic control valve is interlocked with the flow data and the fire status indication signal. When the flow data meets the preset flow threshold and the fire status indication signal indicates that the fire pump has been started and the set delay time has been reached, the first automatic control valve closes and the fourth automatic control valve opens to direct the water flow to the emergency water tank.

[0009] Furthermore, the integrated management system for rainwater and emergency water also includes a first grease trap and a second grease trap connected in sequence to the first automatic control valve. The first oil separator is equipped with a first level gauge and a fifth automatic control valve. The first level gauge is used to monitor the oil level and the water level. The fifth automatic control valve is located at the outlet of the bottom side of the first oil separator and is interlocked with the water level signal. When the water level is higher than the outlet of the first oil separator, the fifth automatic control valve opens to direct the water flow to the second oil separator. The second oil separator has an outlet at the top side. When the rainwater level in the second oil separator reaches the height of the outlet at the top side, the water can flow into the monitoring well through the outlet pipe.

[0010] Furthermore, the first level gauge is a radio frequency admittance oil-water dual-interface level gauge; The first oil separator is connected to an oil pump, which is interlocked with the oil level signal. When the oil level reaches a set height, the oil pump is started to guide the oil to the oil storage tank.

[0011] Furthermore, the monitoring well is equipped with a second level gauge, a sixth automatic control valve, and a first sampling pump; The second level gauge is interlocked with the first sampling pump. When the liquid level in the monitoring well reaches the first sampling level, the first sampling pump starts; when the liquid level in the monitoring well drops to the first preset low level, the first sampling pump shuts down. The sixth automatic control valve is connected to the initial rainwater collection tank and interlocked with the first sampling pump. When the first sampling pump is turned on, the sixth automatic control valve is interlocked open to guide the water flow to the initial rainwater collection tank. The sixth automatic control valve is also interlocked with the second level gauge. When the level in the monitoring well drops to the second preset low level, the sixth automatic control valve closes.

[0012] Furthermore, the initial rainwater collection tank is equipped with a third level gauge and a first transfer pump set; The first transfer pump set is interlocked with the third level gauge. When the level of the initial rainwater collection tank reaches the first preset start level, the first transfer pump set is started to transfer the rainwater to the sewage treatment device. Furthermore, the main outlet water storage monitoring tank is equipped with a fourth level gauge, a second sampling pump, and a second transfer pump set; The fourth level gauge is interlocked with the second sampling pump and the third automatic control valve respectively. When the liquid level in the main outlet water storage monitoring tank reaches the second sampling level, the second sampling pump is started; when the liquid level in the main outlet water storage monitoring tank drops to the third preset low level, the second sampling pump and the third automatic control valve are closed. The second transfer pump set is interlocked with the monitoring data of the second online monitoring device. When any monitored pollutant data is unqualified and the third automatic control valve is closed, the second transfer pump set starts to direct the water flow to the sewage treatment device; when all monitored pollutant data return to qualified, the second transfer pump set shuts down.

[0013] Furthermore, a third transfer pump set is also installed in the main outlet water storage monitoring tank; The third transfer pump set is connected to the emergency water tank. The third transfer pump set is interlocked with the flow monitoring unit and the fire pump status acquisition unit. When the flow data meets the preset flow threshold and the fire status indication signal indicates that the fire pump has been started and the set delay time has been reached, the third automatic control valve closes and the third transfer pump set starts to direct the water flow to the emergency water tank.

[0014] Furthermore, a fifth level gauge and a fourth transfer pump set are installed in the accident water tank; The fifth level gauge is interlocked with the fourth transfer pump set. When the level of the emergency water tank reaches the second preset start level, the fourth transfer pump set is started to transfer the emergency water to the sewage treatment device.

[0015] Furthermore, the third self-controlled valve is connected to a water collection well, which is connected to the municipal pipeline network.

[0016] In addition, the present invention provides a method for managing rainwater and emergency water, applicable to the integrated rainwater and emergency water management system described in any of the above embodiments, the management method comprising: Rainwater management: Rainwater undergoes oil-water separation in an oil separator. Once the water level reaches the standard, it enters a monitoring well. In the monitoring well, sampling and online monitoring are initiated when the water level reaches the sampling conditions. Based on the online monitoring results, if all pollutants are within acceptable limits, the second automatic control valve is opened to direct the rainwater to the main outfall water storage and monitoring tank. After another online monitoring, if all pollutants remain within acceptable limits, the rainwater is discharged into the municipal pipe network. Emergency water management: When an abnormal increase in flow rate and a fire pump start signal are detected simultaneously, it is determined to be emergency water, and the emergency water is directed to the emergency water tank.

[0017] Compared with the prior art, the integrated rainwater and emergency water management system provided in this embodiment of the invention has at least the following technical effects: The integrated rainwater and emergency water management system includes a first automatic control valve, a monitoring well, a second automatic control valve, a main outlet water storage monitoring tank, a third automatic control valve, a flow meter, a fire pump status acquisition unit, and a fourth automatic control valve. A monitoring well is located downstream of the first automatic control valve and is equipped with a first online monitoring device. The first online monitoring device is used to monitor one or more pollutants in the rainwater. The second automatic control valve is interlocked with the monitoring data of the first online monitoring device. When all monitored pollutant data are qualified, the second automatic control valve opens and the first automatic control valve closes. A main outlet water storage monitoring tank is located downstream of the second automatic control valve and is equipped with a second online monitoring device. The second online monitoring device is used to monitor one or more pollutants in the water. A third automatic control valve is interlocked with the monitoring data of the second online monitoring device. When all monitored pollutant data are qualified, the third automatic control valve opens to direct the water flow to the municipal pipe network. A flow meter is located upstream of the first automatic control valve to acquire flow data. A fire pump status acquisition unit acquires fire status indication signals. A fourth automatic control valve is interlocked with the flow data and the fire status indication signal. When the flow data meets a preset flow threshold, and the fire status indication signal indicates that the fire pump has started and reached the set delay time, the first automatic control valve closes and the fourth automatic control valve opens to direct the water flow to the emergency water tank. This management system can automatically switch water flow paths based on real-time monitoring data, reducing the occurrence of misoperations, omissions, and delays, and improving response speed and operational stability. Compared with the existing technology of separately laid rainwater and emergency water pipe networks, it maximizes the sharing of pipe network resources, effectively reduces construction investment, and fully adopts an automated control mode for daily operating condition switching, significantly reducing manual intervention and lowering operating costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0019] Figure 1 This is a schematic diagram of the integrated rainwater and emergency water management system in one embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the first oil separator and the second oil separator in one embodiment of the present invention.

[0020] Figure label: 1. First automatic control valve; 2. Monitoring well; 3. Second automatic control valve; 4. Main outlet water storage monitoring tank; 5. Third automatic control valve; 6. Fourth automatic control valve; 7. First oil separator; 8. Second oil separator; 9. First level gauge; 10. Fifth automatic control valve; 11. Oil pump; 12. Oil storage tank; 13. Third level gauge; 14. First transfer pump set; 15. Second transfer pump set; 16. Emergency water tank; 17. Third transfer pump set; 18. Water collection well; 19. Initial rainwater collection tank; 20. Fifth level gauge; 21. Fourth transfer pump set; 22. Wastewater treatment device. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0023] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0024] Please refer to the attached document. Figure 1 and attached Figure 2As shown in the figure (arrows indicate water flow direction), an embodiment of the present invention provides a comprehensive rainwater and emergency water management system, including a first automatic control valve 1, a monitoring well 2, a second automatic control valve 3, a main outlet water storage monitoring tank 4, a third automatic control valve 5, a flow meter, a fire pump status acquisition unit, and a fourth automatic control valve 6. The monitoring well 2 is located downstream of the first automatic control valve 1 and is equipped with a first online monitoring device. The first online monitoring device is used to monitor one or more pollutants in the rainwater. It should be further noted that the monitoring factors of the first online monitoring device are determined based on the main pollutants of the enterprise, and can be selected to monitor pH, chemical oxygen demand, and ammonia nitrogen. The monitoring data is transmitted to the central control system (DCS) in real time. The second automatic control valve 3 is interlocked with the monitoring data of the first online monitoring device; when all monitored pollutant data are qualified, the second automatic control valve 3 opens and the first automatic control valve 1 closes; the main outlet water storage monitoring tank 4 is located downstream of the second automatic control valve 3 and is equipped with a second online monitoring device, which is used to monitor one or more pollutants in the water; the third automatic control valve 5 is interlocked with the monitoring data of the second online monitoring device; when all monitored pollutant data are qualified, the third automatic control valve 5 opens to direct the water flow to the municipal pipe network, thus significantly reducing the risk of pollutant discharge exceeding standards. A flow meter is installed upstream of the first automatic control valve 1 to acquire flow data; the fire pump status acquisition unit acquires the fire status indication signal; the fourth automatic control valve 6 is interlocked with the flow data and the fire status indication signal. When the flow data meets the preset flow threshold and the fire status indication signal indicates that the fire pump has started and reached the set delay time, the first automatic control valve 1 closes and the fourth automatic control valve 6 opens to direct the water flow to the emergency water tank 16. This avoids the need for personnel to rush to the scene to operate in the event of a fire or accident, reduces the possibility of accidental water being accidentally discharged into the municipal pipe network, and improves the efficiency and safety of emergency response.

[0025] In this embodiment, by setting up a first automatic control valve 1, a second automatic control valve 3, a third automatic control valve 5, and a fourth automatic control valve 6, and achieving interlocked control with the first online monitoring device, the second online monitoring device, the flow meter, and the fire status acquisition unit, the rainwater and emergency water discharge process does not require manual judgment or operation. The system can automatically switch paths based on real-time monitoring data, reducing the occurrence of misoperations, omissions, and delays, and improving response speed and operational stability.

[0026] Furthermore, compared to the existing technology of separately laid rainwater pipe networks and emergency water pipe networks, the integrated rainwater and emergency water management system provided in this embodiment can maximize the sharing of pipe network resources while meeting the discharge requirements of multiple operating conditions, effectively reducing the investment in the construction period, and adopting a fully automated control mode for daily operating condition switching, which greatly reduces the manual intervention links and lowers the operating costs.

[0027] Furthermore, the system can transmit online monitoring data (pH, chemical oxygen demand, ammonia nitrogen, etc.), valve status, flow data, fire pump status, and other operational information to the central control system (DCS) in real time, forming a continuous and complete operational record. Through automatic recording and traceability of key operational nodes, enterprises can fully trace the flow direction, water quality, and operational status of rainwater and emergency water. In the event of a water quality anomaly, the system data can quickly pinpoint the source of the problem.

[0028] In this embodiment, the integrated rainwater and emergency water management system includes a first automatic control valve 1, a monitoring well 2, a second automatic control valve 3, a main outlet water storage monitoring tank 4, a third automatic control valve 5, a flow meter, a fire pump status acquisition unit, and a fourth automatic control valve 6. The monitoring well 2 is located downstream of the first automatic control valve 1 and is equipped with a first online monitoring device. The first online monitoring device is used to monitor one or more pollutants in the rainwater. The second automatic control valve 3 is interlocked with the monitoring data of the first online monitoring device. When all monitored pollutant data are within acceptable limits, the second automatic control valve 3 opens, and the first automatic control valve 1 closes. The main outlet water storage monitoring tank 4 is located downstream of the second automatic control valve 3 and is equipped with a second online monitoring device. The second online monitoring device is used to monitor one or more pollutants in the water. The third automatic control valve 5 is interlocked with the second online monitoring device. The device's monitoring data is interlocked; when all monitored pollutant data are qualified, the third automatic control valve 5 opens to direct water flow to the municipal pipe network. A flow meter is installed upstream of the first automatic control valve 1 to acquire flow data. The fire pump status acquisition unit acquires the fire status indication signal. The fourth automatic control valve 6 is interlocked with the flow data and the fire status indication signal. When the flow data meets the preset flow threshold, and the fire status indication signal indicates that the fire pump has started and reached the set delay time, the first automatic control valve 1 closes, and the fourth automatic control valve 6 opens to direct water flow to the emergency water tank 16. This management system can automatically switch water flow paths based on real-time monitoring data, reducing the occurrence of misoperations, leaks, and delays, and improving response speed and operational stability. Compared to the existing technology's separate and independent laying mode for rainwater pipe networks and emergency water pipe networks, this system maximizes the sharing of pipe network resources, effectively reduces construction investment, and fully adopts automated control mode for daily operating condition switching, significantly reducing manual intervention and lowering operating costs.

[0029] In some optional embodiments, the integrated rainwater and emergency water management system further includes a first oil separator 7 and a second oil separator 8 connected in sequence to the first automatic control valve 1; the first oil separator 7 is equipped with a first level gauge 9 and a fifth automatic control valve 10, the first level gauge 9 being used to monitor the oil layer level and the water layer level; the fifth automatic control valve 10 is located at the outlet at the bottom side of the first oil separator 7 and is interlocked with the water layer level signal, when the water layer level is higher than the outlet of the first oil separator 7, the fifth automatic control valve 10 opens to guide the water flow to the second oil separator 8; the second oil separator 8 is provided with an outlet at the top side, and when the rainwater level of the second oil separator 8 reaches the height of the top side outlet, the water flow can enter the monitoring well 2 through the outlet pipe. The first oil separator 7 and the second oil separator 8 are respectively provided with observation ports, and a vent is provided between the first oil separator 7 and the second oil separator 8.

[0030] In some optional embodiments, the first level gauge 9 is a radio frequency admittance oil-water dual interface level gauge; the first oil separator 7 is connected to an oil pump 11, which is interlocked with the oil layer level signal. When the oil layer level reaches a set height, the oil pump 11 is started to guide the oil to the oil storage tank 12.

[0031] In some optional embodiments, the monitoring well 2 is equipped with a second level gauge, a sixth automatic control valve, and a first sampling pump; the second level gauge is interlocked with the first sampling pump, and the first sampling pump starts when the liquid level in the monitoring well 2 reaches the first sampling level; the first sampling pump shuts off when the liquid level in the monitoring well 2 drops to the first preset low level; the sixth automatic control valve is connected to the initial rainwater collection tank 19 and interlocked with the first sampling pump, and the sixth automatic control valve opens when the first sampling pump starts to guide the water flow to the initial rainwater collection tank 19; the sixth automatic control valve is also interlocked with the second level gauge, and the sixth automatic control valve closes when the liquid level in the monitoring well 2 drops to the second preset low level.

[0032] In some optional embodiments, the initial rainwater collection tank 19 is provided with a third level gauge 13 and a first transfer pump group 14; the first transfer pump group 14 is interlocked with the third level gauge 13, and when the liquid level of the initial rainwater collection tank 19 reaches the first preset start liquid level, the first transfer pump group 14 is started to transfer the rainwater to the sewage treatment device 22. In some optional embodiments, the main outlet water storage monitoring tank 4 is equipped with a fourth level gauge, a second sampling pump, and a second transfer pump group 15. The fourth level gauge is interlocked with the second sampling pump and the third automatic control valve 5. When the liquid level in the main outlet water storage monitoring tank 4 reaches the second sampling level, the second sampling pump starts. When the liquid level in the main outlet water storage monitoring tank 4 drops to the third preset low level, the second sampling pump and the third automatic control valve 5 close. The second transfer pump group 15 is interlocked with the monitoring data of the second online monitoring device. When any monitored pollutant data is unqualified and the third automatic control valve 5 closes, the second transfer pump group 15 starts to direct the water flow to the sewage treatment device 22. When all monitored pollutant data recover to qualified levels, the second transfer pump group 15 closes.

[0033] In some optional embodiments, a third transfer pump group 17 is also provided in the main outlet water storage monitoring tank 4; the third transfer pump group 17 is connected to the emergency water tank 16, and the third transfer pump group 17 is interlocked with the flow monitoring unit and the fire pump status acquisition unit. When the flow data meets the preset flow threshold, and the fire status indication signal indicates that the fire pump has been started and the set delay time has been reached, the third automatic control valve 5 is closed and the third transfer pump group 17 is started to guide the water flow to the emergency water tank 16.

[0034] In some optional embodiments, the emergency water tank 16 is equipped with a fifth level gauge 20 and a fourth transfer pump group 21; the fifth level gauge 20 and the fourth transfer pump group 21 are interlocked, and when the water level in the emergency water tank 16 reaches the second preset start level, the four transfer pump groups are started to transfer the emergency water to the sewage treatment device 22.

[0035] In some optional embodiments, the third automatic control valve 5 is connected to a water collection well 18, which is connected to the municipal water supply network. It should be further noted that the number of the first transfer pump group 14, the second transfer pump group 15, the third transfer pump group 17, and the fourth transfer pump group 21 can be, but is not limited to, two.

[0036] Furthermore, one embodiment of the present invention also provides a method for managing rainwater and emergency water, applied to the integrated rainwater and emergency water management system of any of the above embodiments, the management method comprising: Rainwater management: Rainwater undergoes oil-water separation in an oil separator. Once the water level reaches the standard, it enters the monitoring well. In the monitoring well, sampling and online monitoring are initiated when the water level reaches the sampling conditions. Based on the online monitoring results, if all pollutants are within acceptable limits, the second automatic control valve is opened to direct the rainwater to the main outfall water storage monitoring tank 4. After another online monitoring, if all pollutants remain within acceptable limits, the rainwater is discharged into the municipal pipe network. Emergency water management: When an abnormal increase in flow rate and a fire pump start signal are detected simultaneously, it is determined to be emergency water, and the emergency water is directed to the emergency water tank.

[0037] The management methods for rainwater and incidental water at least possess the technical effects of the integrated rainwater and incidental water management system implementation examples, and will not be elaborated further here.

[0038] The following section provides a detailed explanation of the integrated management system for rainwater and emergency water under different operating conditions.

[0039] Example 1: Rainwater Management under Normal Rainfall Conditions On a sunny day, the first automatic control valve 1 is open, while the second, third, and fourth automatic control valves 3, 5, and 6 are closed. The fire pump is not started. Initial rainwater enters the system through the top side inlet of the first oil separator 7. Within the first oil separator 7, the density difference between water and oil allows for natural stratification. An RF admittance oil-water dual-interface level gauge is installed in the first oil separator 7 to monitor the oil and water levels respectively. A fifth automatic control valve 10 is installed at the bottom side outlet of the first oil separator 7, and this valve is interlocked with the water level signal. When the water level is higher than the outlet height of the first oil separator 7, the fifth automatic control valve 10 automatically opens, allowing rainwater in the first oil separator 7 to flow into the second oil separator 8 through the bottom outlet. When the rainwater level in the second oil separator 8 reaches the height of its top side outlet, the rainwater enters the monitoring well 2 through the outlet pipe of that top side outlet.

[0040] The monitoring well 2 is equipped with a first online monitoring device, a second level gauge, a sixth automatic control valve, and a first sampling pump. All components are interlocked. An outlet connected to the initial rainwater collection tank 19 is located at the bottom of the monitoring well 2. A sixth automatic control valve is installed at this outlet to transport rainwater from the monitoring well 2 to the initial rainwater collection tank 19 when the interlocking conditions are met. The specific interlocking logic is explained below: (1) The second level gauge is interlocked with the first sampling pump. When the liquid level in monitoring well 2 reaches the first sampling level, the first sampling pump will start automatically. The first sampling level must be set to ensure that the first sampling pump is completely submerged below the liquid surface. The first sampling level can be set to 1 / 3 to 1 / 2 of the total depth of monitoring well 2. The second level gauge can be an ultrasonic or radar level gauge.

[0041] (2) The second level gauge is interlocked with the first sampling pump. After the first sampling pump starts and the rainwater tangentially drains into the main outlet water storage monitoring tank 4, the liquid level in monitoring well 2 gradually decreases. To prevent the first sampling pump from running dry, a first preset low liquid level is set. When the liquid level in monitoring well 2 drops to the first preset low liquid level, the first sampling pump automatically stops. The first preset low liquid level can be set to 3% to 5% of the total depth of monitoring well 2.

[0042] (3) The sixth automatic control valve is interlocked with the first sampling pump. The sixth automatic control valve at the bottom of monitoring well 2 is interlocked with the first sampling pump. When the first sampling pump starts, the sixth automatic control valve opens in conjunction, allowing the water effluent from the bottom of monitoring well 2 to flow into the initial rainwater collection tank 19 through the sixth automatic control valve. The reason for setting this interlock is that, according to the specifications, all water stored in the initial rainwater collection tank 19 must be treated as sewage. Therefore, by interlocking the opening and closing of the first sampling pump and the sixth automatic control valve, the introduction of rainwater that may exceed the standard into the initial rainwater collection tank 19 can be achieved.

[0043] (4) The first automatic control valve 1 and the second automatic control valve 3 are interlocked with the monitoring data of the first online monitoring device. When all the monitored pollutant data are qualified, the first automatic control valve 1 is closed and the second automatic control valve 3 is opened, realizing the switching of rainwater flow to the main outlet water storage monitoring tank 4. If there are three monitoring factors, a three-outlet three-interlock method can be adopted, that is, the first automatic control valve 1 and the second automatic control valve 3 can only be interlocked to open and close when all three monitoring data are qualified.

[0044] (5) The sixth automatic control valve is interlocked with the second level gauge. After the sixth automatic control valve opens and rainwater is introduced into the initial rainwater collection tank 19, and the rainwater flows into the main outlet water storage monitoring tank 4, the liquid level in the monitoring well 2 continues to drop. When the liquid level in the monitoring well 2 drops to the second preset low level, the sixth automatic control valve automatically closes to prevent the liquid level in the monitoring well 2 from continuing to drain into the initial rainwater collection tank 19 even when the liquid level is too low. The second preset low level can be 1% to 3% of the total depth of the monitoring well 2.

[0045] (6) Monitoring data upload and alarm settings. All monitoring data from the first online monitoring device and the liquid level signal from the second level gauge are uploaded in real time to the DCS system in the manned control room, and alarm values ​​are set in the DCS system. The alarm value can be 80% of the corresponding interlock value. The compliance judgment values ​​for each pollutant should be set in accordance with the applicable environmental protection standards for the corresponding industry.

[0046] (7) Explanation of the setting of monitoring well 2 and initial rainwater collection tank 19. The setting of initial rainwater collection tank 19 effectively prevents the initial rainwater that may exceed the standard from entering the rainwater pipe network. Adding monitoring well 2 and setting up interlocking switching of relevant valve groups can ensure that rainwater enters the rainwater pipe network after meeting the standard. At the same time, it can reduce the amount of initial rainwater entering the initial rainwater collection tank 19, reduce the amount of sewage treatment, and improve economic benefits.

[0047] Furthermore, the initial rainwater is introduced into the initial rainwater collection tank 19 via the sixth automatic control valve. According to industry standards, the initial rainwater collection tank 19 is used to collect rainwater from the first 15 to 60 minutes of rainfall. A third level gauge 13 and a first transfer pump group 14 are installed in the initial rainwater collection tank 19, and an interlocking control relationship is established. According to the standard, the first transfer pump group 14 transports the rainwater in the initial rainwater collection tank 19 to the wastewater treatment device 22. The third level gauge 13 is interlocked with the first transfer pump group 14. When the liquid level in the initial rainwater collection tank 19 reaches the first preset start-up level, the first transfer pump group 14 automatically starts, transferring the rainwater in the tank to the wastewater treatment device 22; when the liquid level drops to the preset stop-pump level, the first transfer pump group 14 stops operating. The flow rate of the first transfer pump group 14 should be selected to empty the total water storage capacity of the initial rainwater collection tank 19 within 48 to 72 hours.

[0048] When the second automatic control valve 3 opens and the first automatic control valve 1 closes, rainwater is introduced into the main outlet water storage monitoring tank 4. The main outlet water storage monitoring tank 4 is equipped with a second online monitoring device, a fourth level gauge, a third automatic control valve 5, a second sampling pump, and second and third transfer pump sets 15 and 17, respectively. All devices are interlocked. The third automatic control valve 5 is located at the bottom of the main outlet water storage monitoring tank 4, and its outlet is connected to a collection well 18 to discharge rainwater into the municipal pipe network when the interlocking conditions are met. The specific interlocking logic is as follows: (1) The fourth level gauge is interlocked with the second sampling pump. When the level in the main outlet water storage monitoring tank 4 reaches the second sampling level, the second sampling pump will start automatically. The second sampling level can be set to 3% to 5% of the total depth of the main outlet water storage monitoring tank 4. Since the main outlet water storage monitoring tank 4 has a large volume, it can fully guarantee the water storage required for online monitoring, sampling and analysis. Therefore, the second sampling level only needs to be set in conjunction with the tank depth.

[0049] (2) The fourth level gauge is interlocked with the second sampling pump. When the second sampling pump starts and no new rainwater flows into the main outlet water storage monitoring tank 4 (such as when the rainfall ends), the liquid level in the tank gradually decreases. When the liquid level in the tank drops to the third preset low level, the second sampling pump automatically stops. The third preset low level can be set to 1% to 3% of the total depth of the main outlet water storage monitoring tank 4.

[0050] (3) The third automatic control valve 5 at the bottom of the main outlet water storage monitoring tank 4 is interlocked with the monitoring data of the second online monitoring device. When all the monitored pollutant data are qualified, the third automatic control valve 5 is opened, and the rainwater in the tank flows into the collection well 18 through the third automatic control valve 5 and then into the municipal pipe network. If there are three monitored factors, a three-in-three interlocking method can be adopted, that is, the third automatic control valve 5 can only be opened when all three monitoring data are qualified.

[0051] (4) During the drainage process of the third automatic control valve 5, if the second online monitoring device detects that any pollutant data exceeds the standard, the third automatic control valve 5 will automatically close and stop draining into the collection well 18 and the municipal pipe network. For the three monitoring factors, a three-out-of-one interlocking method can be adopted, that is, if any indicator exceeds the standard, the third automatic control valve 5 will be triggered to close.

[0052] (5) The monitoring data of the second online monitoring device is interlocked with the monitoring data of the second transfer pump group 15. When the third automatic control valve 5 is closed due to unqualified detection data according to the interlock in clause (4) above, if rainwater continues to flow into the main outlet water storage monitoring tank 4, in order to prevent the water level in the tank from rising continuously, the monitoring data of the second transfer pump group 15 is interlocked with the monitoring data of the second online monitoring device. When any monitored pollutant data is unqualified and the third automatic control valve 5 is closed, the second transfer pump group 15 is automatically started to transport the unqualified rainwater to the sewage treatment device 22 for disposal. The flow rate of the second transfer pump group 15 should be selected to ensure that the total water storage capacity of the main outlet water storage monitoring tank 4 can be emptied within 12h to 24h.

[0053] (6) When rainwater temporarily exceeds the standard due to unforeseen factors, triggering the start of the second transfer pump group 15, if the second online monitoring device continuously detects that all pollutant data have returned to the acceptable range, the second transfer pump group 15 will automatically stop operating to avoid continuing to transport the already qualified rainwater to the sewage treatment device 22, thereby reducing unnecessary sewage treatment volume. When there are three monitoring factors, a three-in-one interlocking method can be adopted, that is, the second transfer pump group 15 will be shut down when all three indicators return to the qualified range.

[0054] (7) The third automatic control valve 5 is interlocked with the fourth level gauge. When the third automatic control valve 5 is open, during the discharge of rainwater from the main outlet water storage monitoring tank 4 to the collection well 18, if no new rainwater enters, the water level in the tank will gradually decrease. The fourth level gauge is set with a low-level valve-closing interlock value corresponding to the bottom outlet water. When the water level in the tank drops to the third preset low level, the third automatic control valve 5 will automatically close. The third preset low level can be 1% to 3% of the total depth of the main outlet water storage monitoring tank 4.

[0055] (8) Monitoring data upload and alarm settings. All monitoring data from the second online monitoring device and the level signal from the fourth level gauge are transmitted in real time to the DCS system in the manned control room, and alarm values ​​are set in the DCS system. The alarm value can be 80% of the corresponding interlock value. The pass / fail judgment values ​​for each monitored pollutant should be set according to the environmental emission standards applicable to the industry to which the enterprise belongs.

[0056] Rainwater discharged from the main outlet water storage monitoring tank 4 via the third automatic control valve 5 enters the collection well 18. The collection well 18 is connected to the municipal rainwater pipe network. To facilitate real-time monitoring of the drainage status by operators in the central control room, a night vision monitoring device is installed in the collection well 18 to visually monitor the outlet of the third automatic control valve 5 and the operation of rainwater discharge into the municipal pipe network.

[0057] Example 2: Accident Water Management under Sunny Day Conditions When an accident occurs in the factory area and the fire protection system is activated, a large amount of fire-fighting water enters the rainwater pipe network. Through the interlocking control of various components, the emergency water is introduced into the emergency water tank 16. The specific control logic is as follows: A flow meter is installed upstream of the first automatic control valve 1 to monitor the flow rate entering the rainwater pipe network. In an emergency, fire-fighting water enters the rainwater pipe network, and its instantaneous flow rate is significantly greater than the normal rainfall flow rate. A preset flow threshold is set according to the actual operating conditions. When the flow meter detects that the flow data meets the preset flow threshold, it outputs a high flow interlock signal.

[0058] Meanwhile, a fire pump status acquisition unit is installed on the fire pump control box in the factory area, and a delayed output function is configured. When the fire pump starts, the fire pump status acquisition unit outputs a fire status indication signal after the fire pump has been running continuously for a set delay time (e.g., 10-15 minutes).

[0059] The aforementioned high-flow interlock signal and fire status indication signal constitute a 2-out-of-2 interlock logic. Specifically, the fourth automatic control valve 6 automatically opens and the first automatic control valve 1 automatically closes when both of the following conditions are met simultaneously: the flow meter detects that the flow rate has reached a preset flow threshold; the fire pump starts and runs for more than a set delay before outputting a fire status indication signal. This directs the water flow towards the emergency water tank 16. The emergency water tank 16 is generally located at a low point in the plant area. The use of two interlock signals effectively prevents accidental activation and switching. Specifically, during severe rainstorms, the instantaneous flow rate of rainwater may approach or reach the fire water flow rate, and relying solely on the flow signal may lead to a misjudgment of an emergency situation. Furthermore, during routine functional tests of the fire pump, the operating time may exceed 15 minutes, and relying solely on the fire pump start signal may also lead to accidental switching.

[0060] A fifth level gauge 20 and a fourth transfer pump group 21 are installed in the emergency water tank 16, and an interlocking control relationship is established. The fifth level gauge 20 and the fourth transfer pump group 21 are interlocked. When the water level in the emergency water tank 16 reaches the second preset start level, the fourth transfer pump group 21 automatically starts and transports the emergency water in the emergency water tank 16 to the sewage treatment device 22 for centralized treatment; when the water level drops to the preset stop level, the fourth transfer pump group 21 stops operating.

[0061] Example 3: Accident Water Management in Rainy Weather In rainy weather, when an accident occurs in the plant area and the fire protection system is activated, the accident water and rainwater simultaneously enter the rainwater pipe network. Through the interlocking control of various components, the accident water is introduced into the accident water tank 16. The specific control logic is as follows: Referring to the control logic of emergency water management in Example 2, when the plant's fire protection system is activated and a large amount of fire water enters the rainwater pipe network, a flow meter is installed upstream of the first automatic control valve 1 to monitor the flow rate entering the rainwater pipe network; the fire pump status acquisition unit obtains the fire pump start-up and fire status indication signal exceeding the set delay time (e.g., 10-15 minutes); the high flow interlock signal and the fire status indication signal are interlocked using a 2-out-of-2 logic, and when both signals simultaneously meet the preset conditions, the fourth automatic control valve 6 opens, the first automatic control valve 1 closes, and all the water flow at the front end is diverted to the emergency water tank 16.

[0062] In the event of an accident and rainfall, some of the accident water may enter the main outlet water storage monitoring tank 4 along with rainwater. To prevent the mixed rainwater containing the accident water from entering the municipal pipe network, a flow monitoring unit (such as a flow meter) is installed on the inlet pipe leading to the main outlet water storage monitoring tank 4 to monitor the instantaneous flow rate entering the main outlet water storage monitoring tank 4. This flow monitoring unit is interlocked with the third automatic control valve 5 and the third transfer pump group 17.

[0063] Specifically, under normal operating conditions during rainy weather, rainwater is introduced into the main outlet water storage monitoring tank 4 through the second automatic control valve 3, and discharged into the collection well 18 and municipal pipe network through the third automatic control valve 5 when the pollution factor meets the standard. In the event of an accident, when the flow monitoring unit detects that the inlet flow of the main outlet water storage monitoring tank 4 reaches the preset flow threshold of the flow monitoring unit, it outputs an accident high flow interlock signal. This interlock signal takes precedence over the interlock logic regarding the opening of the third automatic control valve 5 in rainwater management, triggering the closing of the third automatic control valve 5. After the accident high flow interlock signal triggers the closing of the third automatic control valve 5, in order to prevent the liquid level of the main outlet water storage monitoring tank 4 from continuously rising and causing the risk of overflow under accident conditions, the third transfer pump group 17 is interlocked with the high flow interlock signal. When it is detected that the inlet flow of the main outlet water storage monitoring tank 4 reaches the preset flow threshold and the third automatic control valve 5 is closed, the third transfer pump group 17 automatically starts, transporting the mixed accident water and rainwater in the main outlet water storage monitoring tank 4 to the accident water tank 16. The flow rate selection of the third transfer pump group 17 should meet the requirement that the total water storage capacity of the main outlet water storage monitoring tank 4 can be emptied within 3 hours.

[0064] It should be further explained that a radio frequency admittance oil-water dual-interface level gauge is already installed in the first oil separator 7 to simultaneously monitor the oil layer level and the water layer level. Based on this, an oil pump 11 can be added to transfer the floating oil layer in the first oil separator 7 to the oil storage tank 12. Specifically, the oil pump 11 is arranged in the first oil separator 7, with its suction inlet located approximately 2 / 3 of the tank depth from the bottom, placing it above the oil-water interface for extracting the oil layer.

[0065] The oil pump 11 is interlocked with the oil level signal of the radio frequency admittance oil-water dual-interface level gauge in the first oil separator 7. When the oil level reaches the first preset oil level interlock value, the oil pump 11 automatically starts, transferring the floating oil in the first oil separator 7 to the oil storage tank 12. The first preset oil level interlock value can be set to approximately 1 / 5 of the total depth of the first oil separator 7. After the oil in the first oil separator 7 is transferred to the oil storage tank 12, it can be recycled through the device to extract the effective components and maximize utilization. When the oil level drops to the second preset oil level interlock value, the oil pump 11 automatically stops operating. The second preset oil level interlock value can be set to approximately 1 / 10 of the total depth of the first oil separator 7.

[0066] The above description is merely an embodiment of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements all fall within the protection scope of the present invention.

Claims

1. A rainwater and accident water integrated management system, characterized by, include: First self-controlled valve; The monitoring well is located downstream of the first self-controlled valve and is equipped with a first online monitoring device, which is used to monitor one or more pollutants in the rainwater. The second automatic control valve is interlocked with the monitoring data of the first online monitoring device; when all monitored pollutant data are qualified, the second automatic control valve opens and the first automatic control valve closes. The main outlet water storage monitoring tank is located downstream of the second automatic control valve and is equipped with a second online monitoring device, which is used to monitor one or more pollutants in the water. The third automatic control valve is interlocked with the monitoring data of the second online monitoring device; when all monitored pollutant data are qualified, the third automatic control valve opens to direct the water flow to the municipal pipe network. A flow meter is installed upstream of the first self-controlled valve to acquire flow data; Fire pump status acquisition unit acquires fire status indication signals; The fourth automatic control valve is interlocked with the flow data and the fire status indication signal. When the flow data meets the preset flow threshold and the fire status indication signal indicates that the fire pump has been started and the set delay time has been reached, the first automatic control valve closes and the fourth automatic control valve opens to direct the water flow to the emergency water tank.

2. The stormwater and accidental water integrated management system according to claim 1, characterized in that, It also includes a first oil separator and a second oil separator that are sequentially connected to the first self-controlled valve; The first oil separator is equipped with a first level gauge and a fifth automatic control valve. The first level gauge is used to monitor the oil level and the water level. The fifth automatic control valve is located at the outlet of the bottom side of the first oil separator and is interlocked with the water level signal. When the water level is higher than the outlet of the first oil separator, the fifth automatic control valve opens to direct the water flow to the second oil separator. The second oil separator has an outlet at the top side. When the rainwater level in the second oil separator reaches the height of the outlet at the top side, the water can flow into the monitoring well through the outlet pipe.

3. The stormwater and accidental water integrated management system according to claim 2, wherein The first level gauge is a radio frequency admittance oil-water dual interface level gauge; The first oil separator is connected to an oil pump, which is interlocked with the oil level signal. When the oil level reaches a set height, the oil pump is started to guide the oil to the oil storage tank.

4. The stormwater and accidental water integrated management system according to claim 2, wherein The monitoring well is equipped with a second level gauge, a sixth automatic control valve, and a first sampling pump. The second level gauge is interlocked with the first sampling pump. When the liquid level in the monitoring well reaches the first sampling level, the first sampling pump starts; when the liquid level in the monitoring well drops to the first preset low level, the first sampling pump shuts down. The sixth automatic control valve is connected to the initial rainwater collection tank and interlocked with the first sampling pump. When the first sampling pump is turned on, the sixth automatic control valve is interlocked open to guide the water flow to the initial rainwater collection tank. The sixth automatic control valve is also interlocked with the second level gauge. When the level in the monitoring well drops to the second preset low level, the sixth automatic control valve closes.

5. The stormwater and accidental water integrated management system according to claim 4, wherein The initial rainwater collection tank is equipped with a third level gauge and a first transfer pump set; The first transfer pump set is interlocked with the third level gauge. When the level of the initial rainwater collection tank reaches the first preset start level, the first transfer pump set is started to transfer the rainwater to the sewage treatment device.

6. The stormwater and accidental water integrated management system according to claim 1, wherein The main outlet water storage monitoring tank is equipped with a fourth level gauge, a second sampling pump, and a second transfer pump set. The fourth level gauge is interlocked with the second sampling pump and the third automatic control valve respectively. When the liquid level in the main outlet water storage monitoring tank reaches the second sampling level, the second sampling pump is started; when the liquid level in the main outlet water storage monitoring tank drops to the third preset low level, the second sampling pump and the third automatic control valve are closed. The second transfer pump set is interlocked with the monitoring data of the second online monitoring device. When any monitored pollutant data is unqualified and the third automatic control valve is closed, the second transfer pump set starts to direct the water flow to the sewage treatment device; when all monitored pollutant data return to qualified, the second transfer pump set shuts down.

7. The stormwater and accidental water integrated management system according to claim 6, characterized in that, The main outlet water storage monitoring tank is also equipped with a third transfer pump set; The third transfer pump set is connected to the emergency water tank. The third transfer pump set is interlocked with the flow monitoring unit and the fire pump status acquisition unit. When the flow data meets the preset flow threshold and the fire status indication signal indicates that the fire pump has been started and the set delay time has been reached, the third automatic control valve closes and the third transfer pump set starts to direct the water flow to the emergency water tank.

8. The integrated rainwater and emergency water management system according to claim 1, characterized in that, The accident water tank is equipped with a fifth level gauge and a fourth transfer pump set; The fifth level gauge is interlocked with the fourth transfer pump set. When the level of the emergency water tank reaches the second preset start level, the fourth transfer pump set is started to transfer the emergency water to the sewage treatment device.

9. The integrated rainwater and emergency water management system according to claim 1, characterized in that, The third self-controlled valve is connected to a water collection well, which is connected to the municipal pipeline network.

10. A method for managing rainwater and accidental water, characterized in that, The management method, applied to the integrated rainwater and emergency water management system as described in any one of claims 1 to 9, comprises: Rainwater management: Rainwater undergoes oil-water separation in an oil separator. Once the water level reaches the standard, it enters a monitoring well. In the monitoring well, sampling and online monitoring are initiated when the water level reaches the sampling conditions. Based on the online monitoring results, if all pollutants are within acceptable limits, the second automatic control valve is opened to direct the rainwater to the main outfall water storage and monitoring tank. After another online monitoring, if all pollutants remain within acceptable limits, the rainwater is discharged into the municipal pipe network. Emergency water management: When an abnormal increase in flow rate and a fire pump start signal are detected simultaneously, it is determined to be emergency water, and the emergency water is directed to the emergency water tank.

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