CN106513430B - Hydrocarbon contaminated soil remediation system based on heat-strengthened SVE - Google Patents
Hydrocarbon contaminated soil remediation system based on heat-strengthened SVE Download PDFInfo
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- CN106513430B CN106513430B CN201710014117.9A CN201710014117A CN106513430B CN 106513430 B CN106513430 B CN 106513430B CN 201710014117 A CN201710014117 A CN 201710014117A CN 106513430 B CN106513430 B CN 106513430B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
Abstract
The invention discloses a hydrocarbon contaminated soil remediation system based on heat-enhanced SVE, which comprises: the system comprises a purging device, an SVE device, an activated carbon adsorption soil extraction and purification device, a heat energy circulating device, a detection system and a control device; wherein, the purging device is connected with the SVE device through the heat energy circulating device; the SVE device is connected with the active carbon adsorption soil extraction and purification device; the active carbon adsorption soil extraction and purification device is respectively connected with the heat energy circulating device and the detection system; and the control device is respectively electrically connected with the purging device, the activated carbon adsorption soil extraction and purification device, the heat energy circulating device and the detection system, and cooperatively controls the purging device, the activated carbon adsorption soil extraction and purification device, the heat energy circulating device and the detection system to complete the process of the hydrocarbon-polluted soil remediation system. The line can realize the cyclic utilization of heat energy, the mineralization of organic waste gas and the cyclic utilization of active carbon, has low cost and skid-mounted effect, and accords with the national situation of sustainable development.
Description
Technical Field
The invention relates to the field of environmental engineering, in particular to a hydrocarbon contaminated soil remediation system based on heat-enhanced SVE (singular value extraction) for hydrocarbon contaminated soil remediation.
Background
Hydrocarbon pollutants are easily hidden in the soil environment, mostly have toxicity, and damage soil and underground water resources. At present, researches show that various leakage accidents occur in the processes of oil field exploration, exploitation, oil storage, transportation and use, and serious hydrocarbon soil pollution is caused. Hydrocarbon pollutants are directly desorbed from soil under certain conditions to generate Volatile Organic Compounds (VOCs), and the effect of the VOCs on enhancing atmospheric oxidation is more important than that of nitrogen oxides NOx, so that the VOCs are the most important pollutants for causing serious haze pollution. If hydrocarbon pollutants are accumulated in soil, the environment and the sanitation can be seriously polluted, a series of problems such as energy waste, potential safety hazard, economic loss and the like are caused, and the threat to the life health of human beings is caused.
According to the statistics of super funds in the United states, the number and the soil volume of the soil in 1104 hydrocarbon polluted sites in the United states, which are repaired by adopting the technologies such as Soil Vapor Extraction (SVE), incineration, solidification/stabilization, bioremediation and the like, are listed as the first sites. However, the traditional SVE technology is not suitable for viscous soil with small pores and poor air permeability and water permeability, and heat strengthening SVE is usually adopted. Most of the existing heat-strengthening SVE systems adopt ex-situ treatment, volatile organic compounds cannot be collected in time in the treatment process, the activated carbon is directly treated as hazardous waste after being adsorbed and saturated, and the heat energy of the activated carbon and the enriched hydrocarbons cannot be recycled. From the current hydrocarbon contaminated soil remediation system applied by enterprises, the remediation system has the disadvantages of high cost, large occupied area, low remediation efficiency of partial systems, and economic and resource waste.
Disclosure of Invention
Based on the problems in the prior art, the invention aims to provide a hydrocarbon pollution place treatment system based on heat-enhanced SVE, which is low in cost and skid-mounted, realizes the cyclic utilization of heat energy, the mineralization of organic waste gas and the cyclic utilization of activated carbon, can adsorb and purify oil gas and recycle and automatically control waste, detects the concentration of the purified oil gas in real time, and ensures that the treated oil gas can reach the standard and be discharged.
The purpose of the invention is realized by the following technical scheme:
the embodiment of the invention provides a hydrocarbon contaminated soil remediation system based on heat-enhanced SVE, which comprises:
the system comprises a purging device 1, an SVE device 2, an activated carbon adsorption soil extraction and purification device 3, a heat energy circulating device 4, a detection system 5 and a control device 6; wherein the content of the first and second substances,
the purging device 1 is connected with the SVE device 2 through the thermal energy circulating device 4;
the SVE device 2 is connected with the activated carbon adsorption soil extraction and purification device 3;
the activated carbon adsorption soil extraction and purification device 3 is respectively connected with the heat energy circulating device 4 and the detection system 5;
the control device 6 is electrically connected with the purging device 1, the activated carbon adsorption soil extraction and purification device 3, the heat energy circulation device 4 and the detection system 5 respectively, and cooperatively controls the purging device 1, the activated carbon adsorption soil extraction and purification device 3, the heat energy circulation device 4 and the detection system 5 to complete the process of the hydrocarbon-contaminated soil remediation system.
According to the technical scheme provided by the invention, the heat energy circulating device is arranged to be matched with the blowing device, the SVE device and the activated carbon adsorption soil extraction and purification device, so that the cyclic utilization of heat energy, the mineralization of organic waste gas and the cyclic utilization of activated carbon can be realized, the cost is low, skid-mounted and the sustainable development national conditions are met, the heat energy generated by combustion is utilized by matching the electromechanical control of the control device with the activated carbon adsorption soil extraction and purification device, the hydrocarbon-polluted soil remediation system based on the heat-enhanced SVE has the functions of adsorbing and purifying oil gas and recycling and automatically controlling waste, the concentration after oil gas purification is detected in real time, and the standard emission after the system is treated can be ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a system for remediating hydrocarbon contaminated soil based on thermally enhanced SVE according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the specific contents of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all references herein to "up", "down", "left", "right", "front", "back" describing an orientation are not intended to refer to that orientation unless specifically stated otherwise, but merely for convenience of description, and the orientation of the product may vary from one description to another. An orientation that would be understood by one of ordinary skill in the art without making any creative effort would be within the scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a thermally enhanced SVE-based hydrocarbon contaminated soil remediation system, including:
the device comprises a purging device 1, an SVE device 2, an activated carbon adsorption soil extraction and purification device 3, a heat energy circulating device 4, a detection system 5 and a control device 6; wherein the content of the first and second substances,
the purging device 1 is connected with the SVE device 2 through a heat energy circulating device 4;
the SVE device 2 is connected with an active carbon adsorption soil extraction and purification device 3;
the activated carbon adsorption soil extraction and purification device 3 is respectively connected with the heat energy circulating device 4 and the detection system 5.
And the control device 6 is respectively electrically connected with the purging device 1, the activated carbon adsorption soil extraction and purification device 3, the heat energy circulating device 4 and the detection system 5, and cooperatively controls the purging device 1, the activated carbon adsorption soil extraction and purification device 3, the heat energy circulating device 4 and the detection system 5 to complete the process of the hydrocarbon-contaminated soil remediation system.
In the repair system described above, the purge device 1 includes:
the system comprises an air compressor 11, a first flowmeter 12, a first thermometer 13, a second flowmeter 14, a purging pipeline 15 and a first electromagnetic valve 16; wherein, the first and the second end of the pipe are connected with each other,
the air compressor 11 is connected to the air pipe 21 of the SVE device 2 through a first flowmeter in sequence via the heat exchanger 47 of the thermal energy circulating device 4, the burner 41 and a purging pipeline;
the first thermometer 13 is arranged on the pipeline between the heat exchanger 47 and the burner 41;
the second flowmeter 14 is arranged on a purging pipeline of the burner 41 connected with the vent pipe 21;
the first electromagnetic valve 16 is arranged on a pipeline of the burner 41 of the thermal energy circulating device 4 connected with the activated carbon adsorption soil extraction and purification device 3.
In the repair system described above, the SVE apparatus 2 includes:
a vent pipe 21, an LPHs contaminated site 22 and an extraction pipe 23; wherein the content of the first and second substances,
the vent pipe 21 and the extraction pipe 23 are respectively arranged in the LPHs polluted place 22;
the vent pipe 21 is connected with the purging device 1 through the heat energy circulating device 4;
the extraction pipe 23 is connected with the active carbon adsorption soil extraction and purification device 3.
In the above-mentioned repair system, the activated carbon adsorption soil extraction and purification device 3 includes:
a vacuum pump 31, a gas-liquid separation tank 32, an adsorption purification inlet pipeline 33, an activated carbon adsorption tank 34, a second thermometer 35, an adsorption purification outlet pipeline 37 and a second electromagnetic valve 36; wherein the content of the first and second substances,
a vacuum pump 31 is arranged on a pipeline at the front end of the gas-liquid separation tank 32;
the rear end pipeline of the gas-liquid separation tank 32 is connected with an adsorption purification inlet pipeline 33 of an activated carbon adsorption tank 34;
an adsorption purification outlet pipeline 37 of the activated carbon adsorption tank 34 is connected with the detection system 5;
a second electromagnetic valve 36 is arranged on the adsorption purification outlet pipeline 37;
the activated carbon adsorption tank 34 is provided with a second thermometer 35;
the activated carbon adsorption tank 34 is connected to the burner 41 of the thermal energy circulation device 4 via a pipe.
In the above-described repair system, the thermal energy circulation device 4 includes:
a burner 41, a combustion-supporting gas supply device 42, a third electromagnetic valve 43, a third flow meter 44, a combustion-supporting pipeline 45, a third electromagnetic valve 46, a heat exchanger 47, a fifth electromagnetic valve 48 and a combustion purification outlet pipeline 49; wherein the content of the first and second substances,
an adsorption purification gas inlet of the combustor 41 is connected with an adsorption purification outlet pipeline 37 of the active carbon adsorption soil extraction and purification device 3;
the hot gas outlet of the burner 41 is connected with the breather pipe 21 of the SVE device 2 through a purging pipeline;
the combustion-supporting gas supply device 42 is connected with a combustion-supporting gas inlet of the combustor 41 through a combustion-supporting pipeline 45 which is sequentially provided with a third electromagnetic valve 43 and a third flow meter 44;
the circulating gas inlet and the circulating gas outlet of the combustor 41 are respectively connected with a heat exchanger 47 through pipelines;
the heat exchanger 47 is connected to the detection system 5 via a combustion purge outlet line 49 provided with a fifth solenoid valve 48, the heat exchanger 47 being provided with an inlet connected to the purging device 1.
In the repair system described above, the detection system 5 includes:
a surge tank 51, a detection pipe 52, an HC concentration detector 53, a data collector 54, and an exhaust pipe 55; wherein the content of the first and second substances,
the data acquisition unit 54 is connected with an HC concentration detector 53, and the HC concentration detector 53 is connected with the surge tank 51 through a detection pipeline 52;
the pressure stabilizing tank 51 is respectively connected with the activated carbon adsorption soil extraction and purification device 3 and the heat energy circulating device 4, and an exhaust pipe 55 is arranged on the pressure stabilizing tank 51.
In the hydrocarbon contaminated soil remediation system, the heat exchanger 47 and the combustor 41 are simultaneously connected to the purging device 1 and the heat energy circulating device 4 for work, and the activated carbon adsorption tank 34 is simultaneously connected to the activated carbon adsorption soil extraction and purification device 3 and the heat energy circulating device 4; a breather pipe 21 of the SVE device 2 is connected with the purging device 1, and an extraction pipe 23 is connected with the active carbon adsorption soil extraction and purification device 3; the activated carbon adsorption soil extraction and purification device 3 is connected with the detection system 5 through an adsorption purification outlet pipeline 37, and an adsorption purification inlet pipeline 33 is connected with the SVE device 2; the heat energy circulating device 4 is connected with the detection system 5 through a combustion purification outlet pipeline 49; the purging device 1 purges the contaminated soil in the SVE device 2, desorbs the contaminants in the soil, is extracted to the ground by the activated carbon adsorption soil extraction and purification device 3, is detected by the detection system 5 to reach the standard and is emptied; when the activated carbon adsorption tank 34 is saturated, the detection system 5 indicates that the HC concentration exceeds the standard, the heat energy circulation device 4 is turned on, the activated carbon desorbs, the desorbed gas is combusted, and the heat energy generated by the combustion is used to heat the purge gas.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example one
As shown in fig. 1, the system for restoring hydrocarbon contaminated soil based on heat-enhanced SVE of the present embodiment includes: the device comprises a purging device 1, an SVE device 2, an activated carbon adsorption soil extraction and purification device 3, a heat energy circulating device 4 and a detection system 5; the heat exchanger 47 and the combustor 41 are simultaneously connected with the purging device 1 and the heat energy circulating device 4 to work, and the activated carbon adsorption tank 34 is simultaneously connected with the activated carbon adsorption soil extraction and purification device 3 and the heat energy circulating device 4; a vent pipe 21 of the SVE device 2 is connected with the purging device 1, and an extraction pipe 23 is connected with the activated carbon adsorption soil extraction and purification device 3; the activated carbon adsorption soil extraction and purification device 3 is connected with the detection system 5 through an adsorption purification outlet pipeline 37, and the adsorption purification inlet pipeline 33 is connected with the SVE device 2; the heat energy circulating device 4 is connected with the detection system 5 through a combustion purification outlet pipeline 49; the sweeping device 1 sweeps the polluted soil in the SVE device 2, the pollutants in the soil are desorbed and are extracted to the ground by the activated carbon adsorption soil extraction and purification device 3, and then the soil is detected by the detection system 5 to reach the standard and is emptied; when the activated carbon adsorption tank 34 is saturated, the detection system 5 indicates that the HC concentration exceeds the standard, the heat energy circulating device 4 is started, the activated carbon is desorbed, the desorbed gas is combusted, and the heat energy generated by the combustion is used for heating the purge gas.
The purging device 1 comprises an air compressor 11, a first flow meter 12, a first thermometer 13, a second flow meter 14, a purging pipeline 15 and a first electromagnetic valve 16, the purging device 1 is connected to a vent pipe 21 through the purging pipeline 15, an air compressor purging mode is adopted, compressed air (the air flow is controlled by the first flow meter 12) generated by the air compressor 11 is preheated by a heat exchanger 47 (the air flow is monitored by the first thermometer 13), then is heated to a preset temperature by a burner (the air flow is monitored by the second thermometer 14), and then is purged through the purging pipeline 15 to the SVE device 2, and the first electromagnetic valve 16 is a normally closed valve.
The SVE device 2 comprises: breather pipe 21, LPHs pollute place 22 and extraction pipe 23, sweep device 1 and sweep LPHs pollute place 22 through breather pipe 21, because the volatility of pollutant, the soil desorption, extraction pipe 23 one side is connected vacuum pump 31 and is produced the negative pressure, and the pollutant is extracted to ground through extraction pipe 23 at last.
The active carbon adsorption soil extraction and purification device 3 comprises: a vacuum pump 31, a gas-liquid separation tank 32, an adsorption purification inlet pipeline 33, an activated carbon adsorption tank 34, a third thermometer 35, a second electromagnetic valve 36 and an adsorption purification outlet pipeline 37. The vacuum pump 31 generates negative pressure, the pollutants are extracted to the ground, and the pollutants enter the detection system 5 through the separation of the gas-liquid separation tank 32 and the adsorption and purification of the activated carbon adsorption tank 34 and the normally open second electromagnetic valve 36 and the adsorption and purification outlet pipeline 37, and are exhausted after reaching the standard after detection.
The thermal energy circulating device 4 comprises: the device comprises a combustor 41, combustion-supporting gas 42, a third electromagnetic valve 43, a third flow meter 44, a combustion-supporting pipeline 45, a fourth electromagnetic valve 46, a heat exchanger 47, a fifth electromagnetic valve 48 and a combustion purification outlet pipeline 49, wherein the combustor 41 comprises an internal combustion part and an external heating part, air is heated to a preset temperature from the outside of the combustor 41 and then flows to an activated carbon adsorption tank 34 through a purging pipeline 15, and activated carbon is desorbed; pollutants enter the combustor 41 to be combusted, and meanwhile, combustion-supporting gas 42 enters the combustor 41 through a combustion-supporting pipeline 45 to support combustion, so that the combustion is more complete, and heat energy generated by the combustion is used for heating the gas; the combusted gas enters the detection system 5 through a fifth electromagnetic valve 48 and a combustion purification outlet pipeline 49, and is exhausted after reaching the standard.
The detection system 5 comprises: the system comprises a pressure stabilizing tank 51, a detection pipeline 52, an HC concentration detector 53, a data acquisition unit 54 and an exhaust pipe 55, wherein purified gas enters the pressure stabilizing tank 51, passes through the detection pipeline 52 to the HC concentration detector 53 and the data acquisition unit 54, and is exhausted through the exhaust pipe 55 after reaching the standard.
The purging device 1, the activated carbon adsorption soil extraction and purification device 3, the heat energy circulation device 4 and the detection system 5 in the lines are respectively and electrically connected with the control device 6, and the control device 6 can cooperatively control the purging device 1, the activated carbon adsorption soil extraction and purification device 3, the heat energy circulation device 4 and the detection system 5 to complete the process of the hydrocarbon-contaminated soil remediation system.
The repair system of the present invention has two reaction processes.
The sweeping device 1 sweeps the polluted soil in the SVE device 2, the vacuum pump 31 of the active carbon adsorption soil extraction and purification device 3 on the other side is vacuumized to generate negative pressure, and due to the fact that the pollutants have volatility, the pollutants in the soil are desorbed and extracted to the ground along with air flow by the active carbon adsorption soil extraction and purification device 3, and then the pollutants are detected by the detection system 5 to reach the standard and are emptied.
After the activated carbon adsorption tank 34 of the activated carbon adsorption soil extraction and purification device 3 is saturated, the detection system 5 displays that the HC concentration exceeds the standard, the second electromagnetic valve 36 is closed, the first electromagnetic valve 16 is opened, hot air is introduced to purge the activated carbon adsorption tank 34, activated carbon is desorbed, the desorbed gas enters the burner 41 of the heat energy circulation device 4 for combustion, and the heat energy generated by combustion is used for heating the purge gas of the purge device 1, and enters the activated carbon desorption regeneration stage.
After purging the activated carbon adsorption tank 34 of the activated carbon adsorption soil extraction and purification device 3 for a certain period of time, the second electromagnetic valve 36 is opened, the first electromagnetic valve 16 is closed, and the normal purging and purification stage is started.
Due to the adoption of the technical scheme, the invention has the following advantages and effects:
(1) Aiming at the hydrocarbon polluted soil, the invention realizes the cyclic utilization of the activated carbon, the mineralization of the organic waste gas and the cyclic utilization of the heat energy, has good repairing effect on the polluted soil and has good economic benefit.
(2) The invention takes the outlet concentration as a control parameter, and utilizes an electromechanical control technology to realize the automatic operation of the oil-gas device only by controlling the opening and closing of the electromagnetic valve 16 and the electromagnetic valve 36 to control the adsorption purification of the system and the desorption regeneration of the active carbon.
(3) The system has simple process flow, adopts skid-mounted equipment, and has simple equipment structure and low operating cost.
(4) The invention adopts the activated carbon adsorption technology to realize the aims of high efficiency and low cost.
(5) The invention adopts the in-situ remediation technology, has little pollution to the surrounding environment, realizes the reclamation of wastes, and meets the requirement of sustainable development.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A thermally enhanced SVE based hydrocarbon contaminated soil remediation system comprising:
the device comprises a purging device (1), an SVE device (2), an activated carbon adsorption soil extraction and purification device (3), a heat energy circulating device (4), a detection system (5) and a control device (6); wherein the content of the first and second substances,
the purging device (1) is connected with the SVE device (2) through the thermal energy circulating device (4);
the SVE device (2) is connected with the activated carbon adsorption soil extraction and purification device (3);
the activated carbon adsorption soil extraction and purification device (3) is respectively connected with the heat energy circulating device (4) and the detection system (5);
the thermal energy circulation device (4) comprises:
the device comprises a burner (41), a combustion-supporting gas supply device (42), a third electromagnetic valve (43), a third flow meter (44), a combustion-supporting pipeline (45), a fourth electromagnetic valve (46), a heat exchanger (47), a fifth electromagnetic valve (48) and a combustion purification outlet pipeline (49); wherein, the first and the second end of the pipe are connected with each other,
an adsorption purification gas inlet of the combustor (41) is connected with an adsorption purification outlet pipeline (37) of the activated carbon adsorption soil extraction and purification device (3);
a hot gas outlet of the burner (41) is connected with a breather pipe (21) of the SVE device (2) through a purging pipeline;
the combustion-supporting gas supply device (42) is connected with a combustion-supporting gas inlet of the combustor (41) through a combustion-supporting pipeline (45) which is sequentially provided with a third electromagnetic valve (43) and a third flow meter (44);
the circulating gas inlet and the circulating gas outlet of the combustor (41) are respectively connected with the heat exchanger (47) through pipelines;
the heat exchanger (47) is connected with the detection system (5) through a combustion purification outlet pipeline (49) provided with a fifth electromagnetic valve (48), and the heat exchanger (47) is provided with an inlet connected with the purging device (1);
the control device (6) is respectively electrically connected with the purging device (1), the activated carbon adsorption soil extraction and purification device (3), the heat energy circulating device (4) and the detection system (5), and the activated carbon adsorption soil extraction and purification device (3), the heat energy circulating device (4) and the detection system (5) of the purging device (1) are cooperatively controlled to complete the process of the hydrocarbon-contaminated soil remediation system.
2. The thermally enhanced SVE based hydrocarbon contaminated soil remediation system of claim 1, wherein said purging device (1) comprises:
the device comprises an air compressor (11), a first flowmeter (12), a first thermometer (13), a second flowmeter (14), a purging pipeline (15) and a first electromagnetic valve (16); wherein the content of the first and second substances,
the air compressor (11) is connected to a vent pipe (21) of the SVE device (2) through a heat exchanger (47) of the thermal energy circulating device (4), a burner (41) and a purging pipeline in sequence through a first flowmeter;
the first thermometer (13) is arranged on a pipeline between the heat exchanger (47) and the burner (41);
the second flowmeter (14) is arranged on a purging pipeline of the combustor (41) connected with a vent pipe (21);
the first electromagnetic valve (16) is arranged on a pipeline of the combustor (41) of the heat energy circulating device (4) connected with the activated carbon adsorption soil extraction and purification device (3).
3. A thermally enhanced SVE based hydrocarbon contaminated soil remediation system according to claim 1 or claim 2 wherein said SVE apparatus (2) comprises:
a vent pipe (21), an LPHs polluted place (22) and an extraction pipe (23); wherein the content of the first and second substances,
the vent pipe (21) and the extraction pipe (23) are respectively arranged in the LPHs polluted place (22);
the vent pipe (21) is connected with the purging device (1) through the thermal energy circulating device (4);
the extraction pipe (23) is connected with the active carbon adsorption soil extraction and purification device (3).
4. The system for restoring hydrocarbon-contaminated soil based on SVE of claim 1 or 2, wherein said activated carbon adsorption soil extraction and purification device (3) comprises:
a vacuum pump (31), a gas-liquid separation tank (32), an adsorption purification inlet pipeline (33), an activated carbon adsorption tank (34), a second thermometer (35), an adsorption purification outlet pipeline (37) and a second electromagnetic valve (36); wherein, the first and the second end of the pipe are connected with each other,
the vacuum pump (31) is arranged on a pipeline at the front end of the gas-liquid separation tank (32);
the rear end pipeline of the gas-liquid separation tank (32) is connected with an adsorption purification inlet pipeline (33) of the activated carbon adsorption tank (34);
an adsorption purification outlet pipeline (37) of the activated carbon adsorption tank (34) is connected with the detection system (5);
the second electromagnetic valve (36) is arranged on the adsorption purification outlet pipeline (37);
the activated carbon adsorption tank (34) is provided with the second thermometer (35);
the activated carbon adsorption tank (34) is connected with a burner (41) of the heat energy circulating device (4) through a pipeline.
5. The thermally enhanced SVE based hydrocarbon contaminated soil remediation system of claim 1 or 2, wherein said detection system (5) comprises:
the device comprises a pressure stabilizing tank (51), a detection pipeline (52), an HC concentration detector (53), a data acquisition unit (54) and an exhaust pipe (55); wherein the content of the first and second substances,
the data acquisition unit (54) is connected with an HC concentration detector (53), and the HC concentration detector (53) is connected with the pressure stabilizing tank (51) through a detection pipeline (52);
the pressure stabilizing tank (51) is respectively connected with the activated carbon adsorption soil extraction and purification device (3) and the heat energy circulating device (4), and an exhaust pipe (55) is arranged on the pressure stabilizing tank (51).
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| CN107685072B (en) * | 2017-09-26 | 2020-12-04 | 上海格林曼环境技术有限公司 | Centralized combustion type in-situ thermal desorption restoration method for polluted site |
| CN109013685A (en) * | 2018-07-06 | 2018-12-18 | 北京石油化工学院 | A kind of hydrocarbon contamination soil repair system based on thermal desorption in situ |
| CN113798315B (en) * | 2021-10-16 | 2022-07-29 | 北京航空航天大学 | Machine learning-based heat-enhanced SVE (singular value Environment) technology gas emission control method |
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| CN103203355B (en) * | 2013-04-12 | 2014-11-05 | 江苏大地益源环境修复有限公司 | Ectopic thermal desorption treatment method of polluted soil |
| CN103585854B (en) * | 2013-10-29 | 2015-09-09 | 嘉园环保有限公司 | A kind of charcoal absorption, N 2the technique of desorption recycling organic exhaust gas |
| CN103658165B (en) * | 2013-12-10 | 2015-12-02 | 北京鼎实环境工程有限公司 | A kind of energy-saving organic polluted soil thermal desorption restoration processing system |
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