CN102601111A - Process control and monitoring system used for in situ bioremediation of contaminated land - Google Patents
Process control and monitoring system used for in situ bioremediation of contaminated land Download PDFInfo
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- CN102601111A CN102601111A CN2012100333373A CN201210033337A CN102601111A CN 102601111 A CN102601111 A CN 102601111A CN 2012100333373 A CN2012100333373 A CN 2012100333373A CN 201210033337 A CN201210033337 A CN 201210033337A CN 102601111 A CN102601111 A CN 102601111A
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Abstract
The invention relates to a process control and monitoring system used for in situ bioremediation of contaminated land, which comprises a gas injection system, a gas extraction system, a liquid injection system, a monitoring system and a PLC (programmable logic controller) system; wherein the monitoring system comprises a temperature sensor, a gas composition monitor and a humidity sensor; the operating result of the gas injection system is displayed on the temperature sensor and the gas composition monitor; the operating result of the gas extraction system is displayed on the temperature sensor and the gas composition monitor; the operating result of the liquid injection system is displayed on the temperature sensor and the humidity sensor; and the monitoring system is connected to the PLC system and is controlled by the PLC system. The process control and monitoring system disclosed by the invention is easy to operate, reduces the labor input, improves the automation degree of the whole project, can meet the requirement that input material is reasonably distributed during the process of wide-range governance of heterogeneous contaminated land, thereby improving governance efficiency and effect while reducing the operating cost.
Description
[technical field]
The present invention relates to a kind of flow process control and monitoring system, be specifically related to a kind of flow process control and monitoring system that the contaminated land biology in situ is repaired that be used for, belong to monitoring of environment systems technology field.
[background technology]
The soil can produce very large harm to the surrounding enviroment and the inhabitation crowd in soil after being polluted by materials such as organic matter, heavy metals.The household refuse landfill sites of China is after it closes; And after industrial enterprise's resettlements such as oil, chemical industry, agricultural chemicals, pharmacy, coking, airport; The organic matter that exists in the soil can produce multiple secondary pollutions such as percolate, foul gas, poisonous microorganism; Also can occupy a large amount of land resource, thereby and cause its degradation rate very slow because organic pollutant component is complicated, the needs about 100 years of degrade fully; And the heavy metal pollution strong toxicity belongs to permanent pollution.Utilization aerobe reactor technology is repaired the soil of quilt organic matter and heavy metal pollution, strengthens biological the ventilation and increase pollution water supply in media, helps quickening the decomposition rate of microorganism to organic matter, makes it in 2-3, accomplish degraded fully; And under action of microorganisms, effects such as the chelating of the humic acid that heavy metal generates through organic aerobic degradation, absorption down, toxicity can reduce accordingly.
And utilize aerobic bioreactor technology to need artificially regulate to the moisture in the contaminated land, air content, mainly comprise in the process bleed, gas injection and three systems of water filling.Each system needs realize through external equipment the input of material in the governance process, and the adjusting through instrument such as valves on the pipeline, realizes importing the uniform distribution of material.
But because the general area of repairing the zone, place is very big, contaminated soil is a heterogeneous body, and promptly the required inventory of each point neither be uniform in the material input process, and the position of delivery outlet to input terminal neither be fixed.Therefore, in whole aerobe governance process, all need be if each through unlatching, the flow of artificial conditioning equipment; Valve on exhaust tube, air injection pipe and the water injection pipe waits the parameter of regulating in the governance process; Process is very loaded down with trivial details, waste of manpower, and the corresponding hysteresis of process meeting; Automatization level is low, does not satisfy the modernization project requirements on Construction.
In order to solve the problems of the technologies described above, necessary a kind of flow process control and monitoring system that the contaminated land biology in situ is repaired that be used for be provided, through installation procedure control and measuring instrument in the relevant position; Realization automation control; To guarantee that the parameter that obtains in the contaminated land governance process is realized real-time and effective control, reduce the input of manpower, reduce operating cost; And make full use of the input material, reach to optimize and administer.
[summary of the invention]
For addressing the above problem; The object of the present invention is to provide a kind of automaticity high; Can realize real-time control, finally accomplish reasonable distribution input material, flow process control and monitoring system that the contaminated land biology in situ that governance efficiency and effect significantly improve is repaired.
For realizing above-mentioned purpose, the technical scheme that the present invention takes is: a kind of flow process control and monitoring system that is used for the reparation of contaminated land biology in situ, and it comprises monitoring system, gas injection system, extract system, liquid injection system and PLC system; Wherein, said monitoring system comprises temperature sensor, gas composition monitoring device and humidity sensor; Said gas injection system operation result shows on said temperature sensor and gas composition monitoring device; Said extract system operation result shows on said temperature sensor and gas composition monitoring device; Said liquid injection system operation result shows on said temperature sensor and humidity sensor; Described monitoring system is connected in the PLC system and by the PLC system and controls extract system, gas injection system and liquid injection system.
The flow process control that is used for the reparation of contaminated land biology in situ of the present invention further is set to monitoring system: said gas injection system is made up of gas injection device, gas injection pipeline, gas flowmeter and gas injection well; Wherein, said gas injection device operation result shows on said temperature sensor and gas composition monitoring device, and is controlled by the PLC system that is connected with temperature sensor, gas composition monitoring device.
The flow process control that is used for the reparation of contaminated land biology in situ of the present invention further is set to monitoring system: said gas flowmeter is arranged on the gas injection pipeline, and the one of which end connects said gas injection device, and the other end connects said gas injection well; On said gas injection pipeline, also be provided with a gas injection control valve group.
The flow process control that is used for the reparation of contaminated land biology in situ of the present invention further is set to monitoring system: said extract system is made up of air extractor, bleed pipeline and extraction well; Wherein, said air extractor operation result shows on said temperature sensor and gas composition monitoring device, and is controlled by the PLC system that is connected with temperature sensor, gas composition monitoring device.
The flow process control that is used for the reparation of contaminated land biology in situ of the present invention further is set to monitoring system: said pipeline one end of bleeding is connected said air extractor, and the other end connects said extraction well; On the said pipeline of bleeding, also be provided with an extraction control valve group.
The flow process control that is used for the reparation of contaminated land biology in situ of the present invention further is set to monitoring system: said liquid injection system is made up of liquid return pump, ground waterflood-transmission line, underground flooding transverse tube, water ga(u)ge and water injection well; Wherein, said liquid return pump operation result shows on said temperature sensor and humidity sensor, and is controlled by the PLC system that is connected with temperature sensor, humidity sensor.
The flow process control that is used for the reparation of contaminated land biology in situ of the present invention further is set to monitoring system: said liquid return pump, ground waterflood-transmission line, underground flooding transverse tube are connected with water injection well successively, and said water ga(u)ge is installed on ground waterflood-transmission line or the underground flooding transverse tube.
The flow process control that is used for the reparation of contaminated land biology in situ of the present invention further is set to monitoring system: also be separately installed with a water injection regulating valve group on said ground waterflood-transmission line or the underground flooding transverse tube.
Compared with prior art; The present invention has following beneficial effect: the extract system, gas injection system, the flood pattern that comprise in the aerobic solid reactor technology that the flow process control that is used for the reparation of contaminated land biology in situ of the present invention and monitoring system are used contaminated land biological restoration process, and utilize the PLC system organically to combine.This system easy operating has reduced labour's input, has improved the automaticity of whole engineering.And, can satisfy on a large scale reasonable distribution input material in the heterogeneous body contaminated land governance process, thereby when improving governance efficiency and effect, reduce operating cost through control in real time.Utilize monitoring system simultaneously, can realize the random conversion of governance process in the regional extent, realize interior improvement among a small circle on a large scale, have flexibility.
[description of drawings]
Fig. 1 is the flow process control of contaminated land biology in situ reparation and the schematic diagram of monitoring system of being used for of the present invention.
[specific embodiment]
See also shown in the Figure of description 1; The present invention is a kind of flow process control and monitoring system that is used for the reparation of contaminated land biology in situ; It is made up of several parts such as monitoring system 1, gas injection system 2, extract system 3, liquid injection system 4 and PLC (Programmable Logic Controller, programmable logic controller (PLC)) systems 5.
Wherein, installation includes temperature sensor 11, gas composition monitoring device 12 and humidity sensor 13 in the said monitoring system 1.Said monitoring system 1 is connected in the PLC system 5, and controls extract system 3, gas injection system 2 and liquid injection system 4 respectively by PLC system 5; It is all interrelated with extract system 3, gas injection system 2, liquid injection system 4, monitoring system 1 four systems to be said PLC system 5, realizes monitoring and control in each system through PLC system 5.Said gas injection system 2 operation results show on said temperature sensor 11 and gas composition monitoring device 12; Said extract system 3 operation results also show on said temperature sensor 11 and gas composition monitoring device 12; The operation result of said liquid injection system 4 shows on said temperature sensor 11 and humidity sensor 13.
Further, said gas injection system 2 is made up of gas injection device 21, gas injection pipeline 22, gas flowmeter 23 and gas injection well 24.Wherein, said gas injection device 21 operation results can show on said temperature sensor 11 and gas composition monitoring device 12, and controlled by the PLC system that is connected with temperature sensor 11, gas composition monitoring device 12.Said gas flowmeter 23 is arranged on the gas injection pipeline 22, and the one of which end connects said gas injection device 21, and the other end connects said gas injection well 24.On said gas injection pipeline 22, also be provided with a gas injection control valve group 25.
Of the present invention to be used for the flow process control that the contaminated land biology in situ repairs following with the operation principle of the gas injection system 2 of monitoring system: through temperature sensor in the monitoring system 1 11 and the parameter that gas composition monitoring device 12 obtains, control gas injection device 21 and realize required reaction condition in the contaminated land biology in situ repair process with gas injection control valve group 25 on the gas injection pipeline 22.If temperature sensor 11 registrations of monitoring show that less than certain value temperature is lower than optimal value, PLC system 5 feedbacks, the flow of unlatching gas injection device 21 or increasing gas injection device 21, the control valve of gas injection simultaneously 25 open degree strengthen.Simultaneously, collect the data of gas composition monitoring device 12, simultaneously, collect the data of gas composition monitoring device 12, if not at O2 greater than certain percentage, CH
4, H
2In the scope of foreign gases such as S less than certain percentage, promptly keep existing service condition, if O2 is less than certain percentage, CH
4, H
2Foreign gases such as S then also need increase gas injection rate greater than certain percentage.If temperature sensor within the specific limits, O2 then need reduce the quantity of the flow of gas injection device 21 or the gas injection device 21 that minimizing is being opened during greater than certain percentage.
Further, said extract system 3 is made up of air extractor 31, bleed pipeline 32 and extraction well 33.Wherein, said air extractor 31 operation results show on said temperature sensor 11 and gas composition monitoring device 12, and are controlled by the PLC system that is connected with temperature sensor 11, gas composition monitoring device 12 5.Said pipeline 32 1 ends of bleeding connect said air extractor 31, and the other end connects said extraction well 33.On the said pipeline 32 of bleeding, also be provided with an extraction control valve group 34.
Of the present invention to be used for the flow process control that the contaminated land biology in situ repairs following with the operation principle of the extract system 3 of monitoring system: through temperature sensor in the monitoring system 1 11 and the parameter that gas composition monitoring 12 obtains, control air extractor 31 and realize required reaction condition in the contaminated land biology in situ repair process with extraction control valve group 34 on the pipeline 32 of bleeding.If temperature sensor 11 registrations of monitoring show that less than certain value temperature is lower than optimal value, PLC system 5 is fed back, and closes the flow of air extractor 31 or reduction air extractor 31; Simultaneously, extraction control valve door 34 open degree reduce.And different according to temperature sensor 11 registrations in certain service radius of monitoring system 1, regulate the gas flow that obtains different entering extraction wells 33, the data of collecting gas composition monitoring 12 simultaneously, if O2 is less than certain percentage, CH
4, H
2Foreign gases such as S need to strengthen the power of air extractor 31 greater than certain percentage; If temperature sensor 11 is in certain temperature range, O2 then need reduce the quantity of the flow of air extractor 31 or the air extractor 31 that minimizing is being opened during greater than certain percentage.
Further, said liquid injection system 4 is made up of liquid return pump 41, ground waterflood-transmission line 42, underground flooding transverse tube 43, water ga(u)ge 44 and water injection well 45.Wherein, show on said temperature sensor 11 of said liquid return pump 41 operation results meeting and the humidity sensor 13, and by the PLC system that is connected with temperature sensor 11, humidity sensor 13 5 controls.Said liquid return pump 41, waterflood-transmission line 42, underground flooding transverse tube 43 are connected with water injection well 45 successively on the ground, and said water ga(u)ge 44 is installed on the ground waterflood-transmission line 42 perhaps on the underground flooding transverse tube 43.Also be separately installed with a water injection regulating valve group 46 on said ground waterflood-transmission line 42 or the underground flooding transverse tube 43.
Of the present invention to be used for the flow process control that the contaminated land biology in situ repairs following with the operation principle of the liquid injection system 4 of monitoring system: through temperature sensor in the monitoring system 1 11 and the parameter that humidity sensor 13 obtains, control liquid return pump 41 and realize required reaction condition in the contaminated land biology in situ repair process with water injection regulating valve group 46 on waterflood-transmission line 42 or the underground flooding transverse tube 43 on the ground.If humidity sensor 13 registrations in the monitor well are less than certain percentage; Then need increase the running time of liquid return pump 41; And increase the open degree of water injection regulating valve group 46, and come selectively to go up the water filling of waterflood-transmission line 42 and underground flooding transverse tube 43 according to the registration of different layers humidity sensor 13.If humidity sensor 13 registrations in the monitoring system 1 then need stop water filling greater than certain percentage.If temperature sensor 11 registrations in the monitoring system 1 stop to inject air again greater than certain value, when strengthening rate of air sucked in required, need to open liquid return pump 41, increase the injection rate of water.
The above specific embodiment is merely the preferred embodiment of this creation, not in order to limiting this creation, any modification of being made within all spirit and principles in this creation, is equal to replacement, improvement etc., all should be included within the protection domain of this creation.
Claims (8)
1. one kind is used for flow process control and the monitoring system that the contaminated land biology in situ is repaired, and it is characterized in that: comprise monitoring system, gas injection system, extract system, liquid injection system and PLC system; Wherein, said monitoring system comprises temperature sensor, gas composition monitoring device and humidity sensor; Said gas injection system operation result shows on said temperature sensor and gas composition monitoring device; Said extract system operation result shows on said temperature sensor and gas composition monitoring device; Said liquid injection system operation result shows on said temperature sensor and humidity sensor; Described monitoring system is connected in the PLC system and by the PLC system and controls extract system, gas injection system and liquid injection system.
2. flow process control and the monitoring system that is used for the reparation of contaminated land biology in situ as claimed in claim 1, it is characterized in that: said gas injection system is made up of gas injection device, gas injection pipeline, gas flowmeter and gas injection well; Wherein, said gas injection device operation result shows on said temperature sensor and gas composition monitoring device, and is controlled by the PLC system that is connected with temperature sensor, gas composition monitoring device.
3. flow process control and the monitoring system that is used for the reparation of contaminated land biology in situ as claimed in claim 2, it is characterized in that: said gas flowmeter is arranged on the gas injection pipeline, and the one of which end connects said gas injection device, and the other end connects said gas injection well; On said gas injection pipeline, also be provided with a gas injection control valve group.
4. as claimed in claim 1ly be used for flow process control and the monitoring system that the contaminated land biology in situ is repaired, it is characterized in that: said extract system is made up of air extractor, bleed pipeline and extraction well; Wherein, said air extractor operation result shows on said temperature sensor and gas composition monitoring device, and is controlled by the PLC system that is connected with temperature sensor, gas composition monitoring device.
5. flow process control and the monitoring system that is used for the reparation of contaminated land biology in situ as claimed in claim 4, it is characterized in that: said pipeline one end of bleeding connects said air extractor, and the other end connects said extraction well; On the said pipeline of bleeding, also be provided with an extraction control valve group.
6. flow process control and the monitoring system that is used for the reparation of contaminated land biology in situ as claimed in claim 1 is characterized in that: said liquid injection system is made up of liquid return pump, ground waterflood-transmission line, underground flooding transverse tube, water ga(u)ge and water injection well; Wherein, said liquid return pump operation result shows on said temperature sensor and humidity sensor, and is controlled by the PLC system that is connected with temperature sensor, humidity sensor.
7. flow process control and the monitoring system that is used for the reparation of contaminated land biology in situ as claimed in claim 6; It is characterized in that: said liquid return pump, ground waterflood-transmission line, underground flooding transverse tube are connected with water injection well successively, and said water ga(u)ge is installed on ground waterflood-transmission line or the underground flooding transverse tube.
8. flow process control and the monitoring system that is used for the reparation of contaminated land biology in situ as claimed in claim 6 is characterized in that: also be separately installed with a water injection regulating valve group on said ground waterflood-transmission line or the underground flooding transverse tube.
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| CN2012100333373A CN102601111A (en) | 2012-02-15 | 2012-02-15 | Process control and monitoring system used for in situ bioremediation of contaminated land |
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| CN2012100333373A CN102601111A (en) | 2012-02-15 | 2012-02-15 | Process control and monitoring system used for in situ bioremediation of contaminated land |
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| CN103230928A (en) * | 2013-05-03 | 2013-08-07 | 广西煜诺华环保科技有限公司 | Control system of solid garbage degradation device |
| CN105149331A (en) * | 2015-08-24 | 2015-12-16 | 张晓晓 | Soil restoration device, soil restoration method and soil restoration agent |
| CN105945063A (en) * | 2016-07-19 | 2016-09-21 | 中国科学院沈阳应用生态研究所 | On-line water supplementary device and method for maintaining polluted soil electrical restoration efficiency |
| CN108580533A (en) * | 2018-05-08 | 2018-09-28 | 中冶节能环保有限责任公司 | A kind of method and structure carrying out contaminated site risk management and control using humic acid |
| CN110918630A (en) * | 2019-12-25 | 2020-03-27 | 中国电建集团中南勘测设计研究院有限公司 | Remediation system and method for ectopic thermal desorption of organic contaminated soil |
| CN113814262A (en) * | 2020-06-18 | 2021-12-21 | 株式会社基恩斯工程 | Wide-range soil cleaning system based on information communication technology |
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| CN103230928A (en) * | 2013-05-03 | 2013-08-07 | 广西煜诺华环保科技有限公司 | Control system of solid garbage degradation device |
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| CN105945063B (en) * | 2016-07-19 | 2019-03-12 | 中国科学院沈阳应用生态研究所 | A kind of online water replanishing device and its method maintaining Electrokinetic Remediation of Polluted Soils efficiency |
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| CN110918630A (en) * | 2019-12-25 | 2020-03-27 | 中国电建集团中南勘测设计研究院有限公司 | Remediation system and method for ectopic thermal desorption of organic contaminated soil |
| CN113814262A (en) * | 2020-06-18 | 2021-12-21 | 株式会社基恩斯工程 | Wide-range soil cleaning system based on information communication technology |
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