CN111570492A - Intelligent multi-phase extraction repair system based on process monitoring and control method - Google Patents
Intelligent multi-phase extraction repair system based on process monitoring and control method Download PDFInfo
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- 238000000605 extraction Methods 0.000 title claims abstract description 148
- 230000008439 repair process Effects 0.000 title claims abstract description 66
- 238000012544 monitoring process Methods 0.000 title claims abstract description 65
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- B09C1/00—Reclamation of contaminated soil
- B09C1/005—Extraction of vapours or gases using vacuum or venting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
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Abstract
An intelligent multiphase extraction repair system based on process monitoring and a control method thereof are characterized in that: the system comprises a multiphase extraction unit, a multiphase separation unit, a pollution purification unit and an on-site process monitoring system, wherein the multiphase extraction unit, the multiphase separation unit, the pollution purification unit and the on-site process monitoring system are connected through ground pipelines; the monitoring device and the controller are distributed in each unit of the multiphase extraction process to collect data and execute commands; monitoring data is transmitted to an intelligent control system through an integrated circuit; the intelligent control system implements information feedback to realize automatic control of process operation parameters based on a process control algorithm. Aiming at the defect of insufficient accessibility of a repair target caused by insufficient state monitoring in the traditional in-situ multiphase extraction implementation process of a polluted site, the intelligent multiphase extraction repair system and the control method based on process monitoring are provided. The method can be used for intelligent monitoring of the multiphase extraction process so as to adjust the technological parameters in real time to ensure the accessibility of the repair target and realize the efficient repair of the soil groundwater in volatile and semi-volatile organic pollution sites.
Description
Technical Field
The invention relates to the technical field of polluted site restoration, and discloses an intelligent multi-phase extraction restoration system based on process monitoring and a control method.
Background
Volatile and semi-volatile organic pollutants are common high-risk pollutants in polluted sites, and bring serious influence on the health of people in and around the sites. The development of related polluted site soil and sewage control and remediation technologies becomes a hotspot in the field of environmental protection. In-situ remediation is the preferred method for remediation of organic contaminated sites because of the advantages of low disturbance, low risk of secondary pollution, relatively low remediation cost and the like.
The multiphase extraction restoration technology simultaneously pumps out gas and liquid (including soil gas, underground water and non-aqueous phase liquid) in a polluted area from underground to the ground through a vacuum extraction device/water pump, thereby achieving the purpose of quickly controlling and synchronously restoring the pollution of soil and underground water. The technology has the synergistic effects of extraction treatment, soil vapor extraction, free phase recovery, vacuum strengthening, biological ventilation, natural attenuation and the like, and is rapidly developed in engineering application in recent years. At present, the establishment and engineering application of a multiphase extraction system mainly focuses on the removal effect of pollutants after field extraction and repair, and a process monitoring control system and a control method which influence the implementation effect of an in-situ multiphase extraction project are lacked. Due to the complexity of soil and underground water systems, the in-situ multiphase extraction repair technology is always in an opaque state in the implementation process, and repair measures are required to be implemented again by reworking if a given repair target is not achieved after the implementation is finished, so that the monitoring of the multiphase extraction repair process plays a crucial role in controlling the final repair effect and the engineering cost.
Disclosure of Invention
The invention provides an intelligent multi-phase extraction repair system and a control method based on process monitoring, aiming at the defect of insufficient accessibility of a repair target caused by an opaque state in the traditional in-situ multi-phase extraction implementation process of a polluted site.
In order to solve the technical problem, the invention is solved by the following technical scheme: the intelligent multi-phase extraction and repair system based on process monitoring is characterized by comprising a multi-phase extraction unit, a multi-phase separation unit and a pollution purification unit, wherein the multi-phase extraction and repair unit comprises a first extraction unit, a second extraction unit, a third separation unit and a fourth separation unit
The multiphase extraction unit comprises a plurality of multiphase extraction wells arranged in an underground water pollution remediation area, extraction thin pipes are arranged in the multiphase extraction wells, the well heads are connected with extraction pipelines, the extraction pipelines are provided with extraction power systems, and the multiphase extraction unit is used for extracting underground pollutants from the multiphase extraction wells to the extraction pipelines;
the multiphase separation unit comprises a gravity type gas-liquid separator connected with the extraction pipeline, the bottom of the gravity type gas-liquid separator is provided with a water outlet and is connected with the oil-water separator through a water pump, and the top of the gravity type gas-liquid separator is provided with an exhaust port; the lower part of the gravity oil-water separator is provided with a wastewater outlet which is connected to a wastewater temporary storage tank, and the top of the gravity oil-water separator is provided with an oil discharge port which is connected to an oil storage pool; conveying underground pollutants to a gravity type gas-liquid separator from an extraction pipeline, discharging waste gas separated by the gravity type gas-liquid separator from a top exhaust port, discharging separated liquid into a temporary waste water storage tank through the gravity type oil-water separator, discharging waste water separated by the oil-water separator into an oil storage tank through an oil discharge port;
the pollution purification unit comprises a waste gas treatment device and a waste water treatment device; the input end of the wastewater treatment device is connected with the temporary wastewater storage tank, and the chemical adding port of the wastewater treatment device is connected with the chemical storage tank through the ectopic chemical adding controller to treat the wastewater separated by the oil-water separator; the waste gas treatment device is connected with the top exhaust port of the gravity type gas-liquid separator through an induced draft fan and is used for treating waste gas discharged from the top exhaust port of the gravity type gas-liquid separator;
underground water monitoring wells are distributed around or in the underground water pollution remediation area, and a soil gas rapid detector, a soil water content sensor and an underground water quality online detector are distributed in the monitoring wells.
Furthermore, the intelligent multi-phase extraction and repair system is provided with a whole-process dynamic monitoring device, wherein the whole-process dynamic monitoring device comprises a multi-phase extraction unit process monitoring device, a multi-phase separation unit process monitoring device and a pollution purification unit process monitoring device;
the process monitoring device of the multiphase extraction unit comprises a vacuum degree sensor, an underground water level and non-aqueous phase liquid interface sensor, an extraction fluid flow sensor and a vacuum degree/exhaust temperature sensor of a vacuum pump, wherein the vacuum degree sensor is arranged in a multiphase extraction well, an extraction pipeline and a repair range aeration zone;
the multiphase separation unit process monitoring device comprises an exhaust gas temperature/humidity sensor arranged at an exhaust port of the gravity type oil-water separator, a liquid level sensor and a drainage controller are arranged in the gravity type gas-liquid separator and the gravity type oil-water separator,
the pollution purification unit process monitoring device comprises a gas phase pollution concentration rapid detector and a waste gas discharge flow sensor which are arranged at the outlet of a waste gas treatment device, and a waste water pollution concentration rapid detector and a waste water discharge flow sensor which are arranged at the water outlet of a waste water treatment device.
Furthermore, the intelligent multi-phase extraction repair system also comprises a control system, wherein the control system is distributed in each unit of the multi-phase extraction repair process and comprises an extraction power system control module and a well group control module which are positioned in the multi-phase extraction unit; the drainage and oil discharge control module is positioned in the multiphase separation unit; and the wastewater treatment control module and the waste gas treatment control module are positioned in the pollution purification unit.
In addition, the intelligent multi-phase extraction repair system control method based on process monitoring adopts the system, and specifically comprises the following steps:
step A: setting working parameters of the multiphase extraction process;
and B: starting a multiphase extraction system, and allowing underground pollutants to enter a multiphase separation unit and a pollution purification unit which are positioned on the ground surface under the action of the multiphase extraction unit;
and C: the whole-process dynamic monitoring device collects the working parameters and the process evaluation parameters of each unit of the multi-phase extraction and repair system and digitally transmits the working parameters and the process evaluation parameters to the control system;
step D: the control system carries out self-evaluation of the repair process through monitoring data threshold analysis, and realizes automatic adjustment of the running states and working parameters of the multiphase extraction unit, the multiphase separation unit and the pollution purification unit according to the monitoring data.
Further, step D includes the following steps:
1) the extraction power system control module controls the automatic start/stop and power and flow regulation of the multi-phase extraction unit according to the result of the whole-process dynamic monitoring device, sets a vacuum degree/exhaust temperature of a vacuum pump to set an alarm threshold, and automatically stops the extraction power system when the threshold is reached;
2) the well group control module compares and sets a threshold value according to online monitoring results of a well vacuum degree sensor, an underground water level and non-aqueous phase liquid interface sensor and a flow sensor, and automatically adjusts the vacuum degree of each well and the extraction flow of an extraction power system;
3) the drainage and oil drainage control module compares the upper limit threshold value and the lower limit threshold value of the liquid level according to the result of the liquid level sensor in the gravity type oil-water separator to automatically control drainage and oil drainage of the multiphase separation unit;
4) the wastewater treatment control module sets an automatic operation program, and controls the procedures of water inlet, water discharge and chemical feeding of the wastewater treatment device according to the monitoring results of the wastewater pollution concentration rapid detector, the wastewater discharge flow sensor and the liquid level sensor;
5) the waste gas treatment control module controls the waste gas treatment process, and controls the opening and closing of an induced draft fan and the air quantity of the waste gas treatment device according to the monitoring results of the gas phase pollution concentration rapid detector and the waste gas discharge flow sensor and the comparison with a set threshold value, and the waste gas temperature/humidity sensor is arranged and the system is closed when the temperature/humidity sensor exceeds the threshold value.
The invention realizes the high-efficiency repair of the soil groundwater in volatile and semi-volatile organic pollution sites.
Compared with the traditional multiphase extraction and repair device, the device has the following advantages:
(1) the intelligent multi-phase extraction and repair system based on process monitoring can realize dynamic monitoring of the multi-phase extraction and repair process, collect various working parameters of the repair process and adjust the working parameters in real time, and ensure the accessibility of the repair target.
(2) The intelligent multi-phase extraction repair system based on process monitoring makes up the defects of poor intuition and instantaneity of the traditional multi-phase extraction repair process monitoring technology.
(3) The intelligent multiphase extraction repair system based on process monitoring can be used for controlling equipment investment and labor cost of repair implementation, and has certain economic benefit.
(4) The intelligent multi-phase extraction and repair system based on process monitoring realizes remote control and automation and has great market value and social value.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent multi-phase extraction repair system based on process monitoring according to an embodiment of the present invention.
The main reference symbols in the attached figure 1 indicate:
1. a multiphase extraction well; 2. a digital vacuum degree sensor; 3. a water level sensor; 4. an oil phase detector; 5. an extraction pipeline; 6. a vacuum pump; 7. a vacuum degree controller; 8. a temperature sensor; 9. a transparent window; 10. a flow sensor; 11. a flow controller; 12. a gas-liquid separator; 13. a liquid level sensor; 14. a water pump; 15. an exhaust gas temperature/humidity sensor; 16. an induced draft fan; 17. an exhaust gas treatment device; 18. an oil-water separator; 19. a drainage controller; 20. a wastewater treatment device; 21. an oil storage pool; 22. a timer; 23. a gas phase concentration rapid detector; 24. a temporary wastewater storage tank; 25. a water intake pump controller; 26. a drain pump controller; 27. a medicament storage tank; 28. a medicament dosing controller; 29. a rapid detector for wastewater pollution; 30. an underground water monitoring well; 31. a water quality on-line detector; 32. a field distributed base station; 33. a master control system; 34. a personal computer; 35. and a communication module.
Detailed Description
An intelligent multi-phase extraction and repair system based on process monitoring comprises a multi-phase extraction unit, a multi-phase separation unit and a pollution purification unit, wherein the multi-phase extraction unit, the multi-phase separation unit and the pollution purification unit are arranged in the system
The invention will now be described in further detail with reference to the accompanying drawings, in which reference is made to the following examples, and in which:
in a specific embodiment, the intelligent multi-phase extraction repair system based on process monitoring and the control method are applied to underground water repair engineering of an organic pollution site.
An intelligent multi-phase extraction and repair system based on process monitoring comprises a multi-phase extraction unit, a multi-phase separation unit and a pollution purification unit, wherein the multi-phase extraction unit, the multi-phase separation unit and the pollution purification unit are arranged in the system
The system comprises a multi-phase extraction unit which comprises: arranging a plurality of multiphase extraction wells 1 in an underground water pollution remediation area, wherein the well depths are unified to be 11m, the well spacing is 3m, a 90 mm PVC well pipe is adopted, and extraction thin pipes are arranged in the well pipe; a digital vacuum degree sensor 2 is arranged at the wellhead of the extraction well to monitor the wellhead vacuum degree, and a water level sensor 3 and an oil phase detector 4 are arranged in the well; the wellhead is connected with an extraction pipeline 5, an extraction power system is an oil-sealed vacuum pump 6, the vacuum pump is provided with a digital vacuum meter, a vacuum degree controller 7 and a temperature sensor 8, and the extraction pipeline is provided with a transparent window 9, a flow sensor 10 and a flow controller 11.
The system comprises a multiphase separation unit comprising: the vacuum pump pumping pipeline is connected with a gravity type gas-liquid separator 12, a baffle plate and a height difference liquid level sensor 13 are arranged in the gravity type gas-liquid separator, a communicating pipeline water pump 14 is arranged at an exhaust port, an exhaust gas temperature/humidity sensor 15 is arranged at an exhaust port, exhaust gas is pumped to an exhaust gas treatment device 17 through an induced draft fan 16, separated liquid passes through a gravity type oil-water separator 18, a liquid level sensor and a water discharge controller 19 are arranged in the oil-water separator, separated wastewater is discharged into a wastewater treatment device 20, and free pollution phases enter an oil storage pool.
The system constitutes a pollution purification unit comprising: the waste gas treatment device is an activated carbon adsorption collection device, the waste gas activated carbon adsorption device is provided with a timing timer 22, consumption time and filler replacement reminding are recorded through a control system, adsorbent fillers are replaced at regular time, and a waste gas flow sensor and a gas phase concentration rapid detector 23 are installed at a waste gas discharge port; the wastewater treatment device adopts an ectopic chemical oxidation treatment process, a Fenton oxidant is added, a temporary wastewater storage tank 24 is arranged in front, a wastewater liquid level sensor, a water inlet pump controller 25, a drainage pump controller 26, a medicament storage tank 27, an ectopic medicament adding controller 28, a wastewater pollution rapid detector 29 and a drainage flow sensor are installed.
The process evaluation monitoring device comprises a vacuum degree sensor and a small amount of underground water monitoring well 30 which are arranged at the periphery and inside the repair area, and an underground water quality online detector 31 which is shallow in underground water level and is not provided with a soil gas monitoring device is arranged in the monitoring well.
The multi-phase extraction unit, the multi-phase separation unit, the pollution purification unit, the field process monitoring device, the controller, the monitoring data sending and instruction receiving and transmitting unit and the integrated intelligent control system form an intelligent multi-phase extraction and repair system based on process monitoring, and all the systems are connected through a ground pipeline and an optical fiber. The monitoring and control device is connected to an on-site distributed base station 32 through an optical fiber, the base station is connected to a master control system 33, the control system is connected to a personal computer 34 based on a PLC automatic control system, working operation parameters of the system are collected and analyzed, and feedback adjustment is carried out on an extraction system control unit, a multiphase separation control unit and a pollution purification control unit (ectopic treatment water inlet control, ectopic treatment water drainage control and ectopic treatment medicine adding control). The control system uploads the data to the cloud for storage through the mobile network of the communication module 35.
The field process monitoring device collects monitoring data on site, the monitoring data sending and instruction receiving and transmitting unit transmits the monitoring data to a field distributed base station through optical fibers, the dynamic intelligent control system is gathered, and the controller receives the working parameter instructions of the control system. The control system adjusts the working parameters of the multiphase extraction repair process through an extraction power system control module and a well group control module which are positioned in the multiphase extraction unit, a drainage and oil discharge control module which is positioned in the multiphase separation unit, a wastewater treatment control module which is positioned in the pollution purification unit and a waste gas treatment control module.
The integrated dynamic intelligent control system processes and controls data through a PLC control system and a personal computer, and comprises a data storage unit, a data statistical analysis unit, a data off-site storage unit, a monitoring data entry unit and a control instruction sending unit. The control system is provided with a communication module to complete remote receiving and sending of monitoring data and control instructions. The data are uploaded to the cloud end through the communication module mobile network, and engineering technicians and engineering managers remotely obtain field process state data through logging in the cloud end and execute control operation of the repair system.
The invention provides a control method of an intelligent multi-phase extraction repair system based on process monitoring, which specifically comprises the following steps:
(1) setting working parameters of the multiphase extraction process through a personal computer and an integrated dynamic intelligent control system;
(2) underground pollutants enter the ground surface multiphase separation unit and the pollution purification unit under the action of the multiphase extraction unit;
(3) the whole-process dynamic monitoring device collects the working state and working parameters of each unit of the multiphase extraction and repair system and the current situation parameters of the polluted site and digitally transmits the working state and working parameters and the current situation parameters to the integrated intelligent control system;
(4) the integrated intelligent control system realizes the automatic control of the running time and the period of the multiphase extraction unit, the multiphase separation unit and the pollution purification unit by monitoring data threshold analysis and implementing feedback information.
The target pollutant is total petroleum hydrocarbon in the engineering application of groundwater remediation in a certain organic pollution site, and the groundwater pollution area is repaired by multiphase extraction with the target pollutant being about 1500m2. The power of a single vacuum pump is 7.5KW, the vacuum degree is below-0.09 MPa, and the maximum extraction water amount of a single well is about 1.0m3H, the maximum extraction gas amount of a single well is about 20m3H is used as the reference value. Setting the control range of the vacuum degree of the system to be-0.04 to-0.07 MPa, the control range of the vacuum degree of the wellhead to be-0.03 to-0.06 MPa and the control range of the flow rate of the extracted gas to be 10 to 20m by a central control system3The flow control range of the extraction water is 0.2-0.5m3The run cycle sets up a 2 hour/single well/day timing plan. Monitoring the operation temperature of the vacuum pump, setting the alarm threshold value to be 45 ℃, and monitoring the temperature and humidity of the multiphase separation waste gasAnd setting the alarm threshold value to be 40 ℃ and 30 percent. And observing the visual state of the extracted fluid through the transparent window of the extraction pipeline. Liquid level sensors in the gas-liquid separator and the oil-water separator control the start and stop of relevant equipment, and indexes of the waste gas and waste water detector control the discharge of waste gas and waste water according to corresponding relevant discharge standards. The repair project operates the extraction system for 30 days and extracts the underground water 465 m3Gas 106200 m3And 180L of free phase is collected, and the water extraction amount of each extraction well is gradually reduced along with the extraction time. In the operation process, the extraction repair effect is intelligently judged and the process technology is adjusted by monitoring the vacuum degree of the extraction well, the water level of the monitoring well, the water yield, the gas output, the waste gas pollution concentration and the waste water pollution concentration. The initial underground water pollution concentration reaches 17920 mug/L to the maximum, after the intelligent multiphase extraction and restoration system based on process monitoring operates for 30 days, the underground water pollution concentration reaches 710 mug/L to the maximum, and the final process evaluation and monitoring result shows that the organic pollutant concentration in the underground water in the monitoring well of the restoration area reaches the restoration target.
The invention realizes the high-efficiency repair of the soil groundwater in volatile and semi-volatile organic pollution sites.
In conclusion, the intelligent multi-phase extraction repair system and the control method based on process monitoring can be used for monitoring the multi-phase extraction repair process and adjusting the multi-phase extraction repair process parameters in real time to ensure the accessibility of the repair target, can also be used for controlling the equipment investment and labor cost of repair implementation, and realizes the high-efficiency repair of the soil underground water of volatile and semi-volatile organic pollution sites and certain economic benefits.
Claims (5)
1. The intelligent multi-phase extraction and repair system based on process monitoring is characterized by comprising a multi-phase extraction unit, a multi-phase separation unit and a pollution purification unit, wherein the multi-phase extraction and repair unit comprises a first extraction unit, a second extraction unit, a third separation unit and a fourth separation unit
The multiphase extraction unit comprises a plurality of multiphase extraction wells arranged in an underground water pollution remediation area, extraction thin pipes are arranged in the multiphase extraction wells, the well heads are connected with extraction pipelines, the extraction pipelines are provided with extraction power systems, and the multiphase extraction unit is used for extracting underground pollutants from the multiphase extraction wells to the extraction pipelines;
the multiphase separation unit comprises a gravity type gas-liquid separator connected with the extraction pipeline, the bottom of the gravity type gas-liquid separator is provided with a water outlet and is connected with the oil-water separator through a water pump, and the top of the gravity type gas-liquid separator is provided with an exhaust port; the lower part of the gravity oil-water separator is provided with a wastewater outlet which is connected to a wastewater temporary storage tank, and the top of the gravity oil-water separator is provided with an oil discharge port which is connected to an oil storage pool; conveying underground pollutants to a gravity type gas-liquid separator from an extraction pipeline, discharging waste gas separated by the gravity type gas-liquid separator from a top exhaust port, discharging separated liquid into a temporary waste water storage tank through the gravity type oil-water separator, discharging waste water separated by the oil-water separator into an oil storage tank through an oil discharge port;
the pollution purification unit comprises a waste gas treatment device and a waste water treatment device; the input end of the wastewater treatment device is connected with the temporary wastewater storage tank, and the chemical adding port of the wastewater treatment device is connected with the chemical storage tank through the ectopic chemical adding controller to treat the wastewater separated by the oil-water separator; the waste gas treatment device is connected with the top exhaust port of the gravity type gas-liquid separator through an induced draft fan and is used for treating waste gas discharged from the top exhaust port of the gravity type gas-liquid separator;
underground water monitoring wells are distributed around or in the underground water pollution remediation area, and a soil gas rapid detector, a soil water content sensor and an underground water quality online detector are distributed in the monitoring wells.
2. The intelligent multiphase extraction repair system based on process monitoring as claimed in claim 1, wherein: the intelligent multi-phase extraction and repair system is provided with a whole-process dynamic monitoring device, wherein the whole-process dynamic monitoring device comprises a multi-phase extraction unit process monitoring device, a multi-phase separation unit process monitoring device and a pollution purification unit process monitoring device;
the process monitoring device of the multiphase extraction unit comprises a vacuum degree sensor, an underground water level and non-aqueous phase liquid interface sensor, an extraction fluid flow sensor and a vacuum degree/exhaust temperature sensor of a vacuum pump, wherein the vacuum degree sensor is arranged in a multiphase extraction well, an extraction pipeline and a repair range aeration zone;
the multiphase separation unit process monitoring device comprises an exhaust gas temperature/humidity sensor arranged at an exhaust port of the gravity type oil-water separator, a liquid level sensor and a drainage controller are arranged in the gravity type gas-liquid separator and the gravity type oil-water separator,
the pollution purification unit process monitoring device comprises a gas phase pollution concentration rapid detector and a waste gas discharge flow sensor which are arranged at the outlet of a waste gas treatment device, and a waste water pollution concentration rapid detector and a waste water discharge flow sensor which are arranged at a liquid level sensor and a water outlet of a waste water treatment device.
3. The intelligent multiphase extraction repair system based on process monitoring as claimed in claim 1, wherein: the intelligent multi-phase extraction and repair system also comprises a control system, wherein the control system is distributed in each unit of the multi-phase extraction and repair process and comprises an extraction power system control module and a well group control module which are positioned in the multi-phase extraction unit; the drainage and oil discharge control module is positioned in the multiphase separation unit; and the wastewater treatment control module and the waste gas treatment control module are positioned in the pollution purification unit.
4. The control method of the intelligent multi-phase extraction repair system based on process monitoring according to any one of claims 1 to 3 is characterized by comprising the following steps:
step A: setting working parameters of the multiphase extraction process;
and B: starting an underground pollutant of the multiphase extraction system, and allowing the underground pollutant to enter an earth surface multiphase separation unit and a pollution purification unit under the action of the multiphase extraction unit;
and C: the whole-process dynamic monitoring device collects the working parameters and the process evaluation parameters of each unit of the multi-phase extraction and repair system and digitally transmits the working parameters and the process evaluation parameters to the control system;
step D: the control system carries out self-evaluation of the repair process through monitoring data threshold analysis, and realizes automatic adjustment of the running states and working parameters of the multiphase extraction unit, the multiphase separation unit and the pollution purification unit according to the monitoring data.
5. The control method according to claim 4, wherein the step D comprises the steps of:
1) the extraction power system control module controls the automatic start/stop and power and flow regulation of the multi-phase extraction unit according to the result of the whole-process dynamic monitoring device, sets a vacuum degree/exhaust temperature of a vacuum pump to set an alarm threshold, and automatically stops the extraction power system when the threshold is reached;
2) the well group control module compares and sets a threshold value according to online monitoring results of a well vacuum degree sensor, an underground water level and non-aqueous phase liquid interface sensor and a flow sensor, and automatically adjusts the vacuum degree of each well and the extraction flow of an extraction power system;
3) the drainage and oil drainage control module compares the upper limit threshold value and the lower limit threshold value of the liquid level according to the result of the liquid level sensor in the gravity type oil-water separator to automatically control drainage and oil drainage of the multiphase separation unit;
4) the wastewater treatment control module sets an automatic operation program, and controls the procedures of water inlet, water discharge and chemical feeding of the wastewater treatment device according to the monitoring results of the wastewater pollution concentration rapid detector, the wastewater discharge flow sensor and the liquid level sensor;
5) the waste gas treatment control module controls the waste gas treatment process, and controls the opening and closing of an induced draft fan and the air quantity of the waste gas treatment device according to the monitoring results of the gas phase pollution concentration rapid detector and the waste gas discharge flow sensor and the comparison with a set threshold value, and the waste gas temperature/humidity sensor is arranged and the system is closed when the temperature/humidity sensor exceeds the threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010409063.8A CN111570492A (en) | 2020-05-14 | 2020-05-14 | Intelligent multi-phase extraction repair system based on process monitoring and control method |
Applications Claiming Priority (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426816A (en) * | 2021-05-26 | 2021-09-24 | 天津大学 | Intelligent remediation system and remediation method for contaminated site |
| CN114082392A (en) * | 2021-12-10 | 2022-02-25 | 开封黄河空分集团有限公司 | Intelligent regular packed tower |
| CN114130805A (en) * | 2021-12-15 | 2022-03-04 | 南京康帕森环保科技有限公司 | Integrated comprehensive in-situ repair system |
| CN114260301A (en) * | 2022-01-25 | 2022-04-01 | 森特士兴环保科技有限公司 | Skid-mounted multiphase extraction equipment system |
| CN115971231A (en) * | 2023-03-20 | 2023-04-18 | 宝航环境修复有限公司 | In-situ leaching system for synchronously repairing aeration zone and aquifer contaminated soil |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5439498A (en) * | 1992-11-10 | 1995-08-08 | Exide Corporation | Process and system for the on-site remediation of lead-contaminated soil and waste battery casings |
| CN204182671U (en) * | 2014-10-24 | 2015-03-04 | 武汉绿之地环保节能科技有限公司 | For the heterogeneous extracting prosthetic device of single pump hydrocone type that contaminated site is repaired |
| CN104874592A (en) * | 2015-03-18 | 2015-09-02 | 江苏盖亚环境工程有限公司 | In situ multi-phase extraction system for contaminated soil |
| CN104959373A (en) * | 2015-06-29 | 2015-10-07 | 环境保护部环境规划院 | Gas station soil and underground water heat strengthening multiphase extraction and remediation integrated system and method |
| CN204724575U (en) * | 2015-06-01 | 2015-10-28 | 杭州大地环保工程有限公司 | A kind of two-phase extracting repair system for soil and groudwater remediation |
| CN109108062A (en) * | 2018-09-04 | 2019-01-01 | 上海格林曼环境技术有限公司 | Novel multi-phase extraction system for contaminated site soil underground water in-situ immobilization |
-
2020
- 2020-05-14 CN CN202010409063.8A patent/CN111570492A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5439498A (en) * | 1992-11-10 | 1995-08-08 | Exide Corporation | Process and system for the on-site remediation of lead-contaminated soil and waste battery casings |
| CN204182671U (en) * | 2014-10-24 | 2015-03-04 | 武汉绿之地环保节能科技有限公司 | For the heterogeneous extracting prosthetic device of single pump hydrocone type that contaminated site is repaired |
| CN104874592A (en) * | 2015-03-18 | 2015-09-02 | 江苏盖亚环境工程有限公司 | In situ multi-phase extraction system for contaminated soil |
| CN204724575U (en) * | 2015-06-01 | 2015-10-28 | 杭州大地环保工程有限公司 | A kind of two-phase extracting repair system for soil and groudwater remediation |
| CN104959373A (en) * | 2015-06-29 | 2015-10-07 | 环境保护部环境规划院 | Gas station soil and underground water heat strengthening multiphase extraction and remediation integrated system and method |
| CN109108062A (en) * | 2018-09-04 | 2019-01-01 | 上海格林曼环境技术有限公司 | Novel multi-phase extraction system for contaminated site soil underground water in-situ immobilization |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426816A (en) * | 2021-05-26 | 2021-09-24 | 天津大学 | Intelligent remediation system and remediation method for contaminated site |
| CN114082392A (en) * | 2021-12-10 | 2022-02-25 | 开封黄河空分集团有限公司 | Intelligent regular packed tower |
| CN114130805A (en) * | 2021-12-15 | 2022-03-04 | 南京康帕森环保科技有限公司 | Integrated comprehensive in-situ repair system |
| CN114260301A (en) * | 2022-01-25 | 2022-04-01 | 森特士兴环保科技有限公司 | Skid-mounted multiphase extraction equipment system |
| CN115971231A (en) * | 2023-03-20 | 2023-04-18 | 宝航环境修复有限公司 | In-situ leaching system for synchronously repairing aeration zone and aquifer contaminated soil |
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