CN113477693B - In-situ electric heating desorption method for soil organic pollutants - Google Patents

In-situ electric heating desorption method for soil organic pollutants Download PDF

Info

Publication number
CN113477693B
CN113477693B CN202110779067.XA CN202110779067A CN113477693B CN 113477693 B CN113477693 B CN 113477693B CN 202110779067 A CN202110779067 A CN 202110779067A CN 113477693 B CN113477693 B CN 113477693B
Authority
CN
China
Prior art keywords
soil
electrode
well
extraction
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110779067.XA
Other languages
Chinese (zh)
Other versions
CN113477693A (en
Inventor
李强
卜青锋
郭威
朱斌
刘世畅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jilin University
Original Assignee
Jilin University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jilin University filed Critical Jilin University
Priority to CN202110779067.XA priority Critical patent/CN113477693B/en
Publication of CN113477693A publication Critical patent/CN113477693A/en
Application granted granted Critical
Publication of CN113477693B publication Critical patent/CN113477693B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B09C1/062—Reclamation of contaminated soil thermally by using electrode or resistance heating elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C2101/00—In situ
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses an in-situ electric heating desorption method for organic pollutants in soil, which belongs to the technical field of thermal desorption of organic pollutant-contaminated soil, and the in-situ electric heating desorption method for organic pollutants in soil utilizes a high-voltage power frequency heating technology, applies high voltage to electrodes, carries out high-voltage breakdown on target soil between the electrodes through high-voltage discharge of the electrodes, enables the target soil layer to form a plasma conductive channel, switches the high voltage into power frequency electricity, and heats the punctured soil and the nearby soil through self resistance heat of the punctured soil layer, thereby achieving the effect of heating desorption. The method utilizes the change of the electrochemical property of the punctured soil after the soil is punctured by high voltage, takes the resistance heat of the punctured soil as a heating medium, and simultaneously changes the electrochemical property of a target soil layer, so that the conductivity of the soil is greatly increased, the efficiency of energy conduction is accelerated, the period of soil restoration is shortened, and the energy consumption is saved.

Description

In-situ electric heating desorption method for soil organic pollutants
Technical Field
The invention belongs to the technical field of thermal desorption of organic pollutant contaminated soil, and particularly relates to an in-situ electric heating desorption method for organic pollutants in soil.
Background
The in-situ thermal desorption technology is applied to polluted land restoration from the 70 th century, and the principle is that the temperature of a polluted area is increased by heating, the physicochemical property of an organic pollutant is changed, the concentration of the organic pollutant in a gas phase or a liquid phase is increased, and the removal rate of the pollutant by liquid phase extraction or soil gas phase extraction is improved. According to different heating modes, the in-situ thermal desorption technology is mainly divided into three types, namely resistance heating, heat conduction heating and steam heating. The heating electrode in the resistance heating that uses at present customizes length alone, and is with high costs, like: chinese patent document CN112170471A discloses an in-situ thermal desorption method and an in-situ thermal desorption system for contaminated soil; utilize parallelly connected the reaching of multiunit resistance stick to the heating to the different degree of depth soil, be restricted by current processing technology's restriction for the cost of resistance stick is too high, faces transportation difficulty, construction installation inconvenient, can not reuse scheduling problem moreover, except the cost problem, also has heating efficiency low to polluting soil heating process, and the slow scheduling problem of rate of heating has influenced repair efficiency, increases the energy consumption.
Disclosure of Invention
The invention aims to provide an in-situ electric heating desorption method for organic pollutants in soil, aiming at solving the problems of overhigh cost of a resistance rod, difficult transportation, inconvenient construction and installation, incapability of being recycled and the like in the existing resistance heating technology.
In order to achieve the purpose, the invention adopts the following technical scheme: an in-situ electric heating desorption method for soil organic pollutants is characterized by comprising the following steps:
step S1: selecting a contaminated soil remediation target area, and arranging an electrode well and an extraction well in the contaminated soil remediation target area; the number of the electrode wells is even, the electrode wells are arranged in two rows, the two rows of the electrode wells are symmetrically arranged, one row is used as an anode well, the other row is used as a cathode well, and the extraction well is positioned between the two rows of the electrode wells;
step S2: respectively installing an air compressor and an extraction device at the wellhead parts of the electrode well and the extraction well; the inlet end of the extraction device is communicated with the inside of the extraction well through an extraction pipeline, and the outlet end of the extraction device is connected with the inlet of the waste treatment system; the air compressor is communicated with the inside of the electrode well, and the air compressor and the extraction device are both in communication connection with a ground control system;
step S3: inserting an electrode in each electrode well, injecting electrolyte solution into the electrode wells until the electrodes are submerged, and sealing the electrode wells and the extraction well mouths; the input end of the electrode is connected with an electrode power supply, the electrode power supply is in communication connection with a ground control system, and the electrode power supply is used for providing two voltages of 50Hz power frequency electricity and 1000V high voltage electricity for the electrode; when a first control signal is received, 1000V high-voltage electricity is provided for the electrode, and when a second control signal is received, 50Hz power frequency electricity is provided for the electrode;
step S4: contaminated soil heating remediation
Applying 1000V high-voltage electricity to the electrodes in the step S3, forming a high-voltage electric field between the two rows of electrodes, puncturing the soil polluted by the organic matters between the two rows of electrodes under the action of the high-voltage electric field to form a plasma conductive channel, heating the soil polluted by the organic matters by adopting 50Hz power frequency electricity after puncturing, thereby completing thermal desorption repair treatment of the soil polluted by the organic matters, simultaneously extracting the wastes in the extraction well through the extraction device, conveying the wastes to a waste treatment system, injecting air into the electrode well through an air compressor while extracting the wastes, and taking the electrode well as an air injection well at the moment.
According to a particular embodiment of the invention, the depth of the electrode well and the extraction well is 0.2m greater than the depth of the soil contaminated with organic matter.
According to a particular embodiment of the invention, the electrodes are located in the middle of the contaminated soil layer of the soil contaminated with organic matter.
Further, before step S4, the in-situ electric heating desorption method for organic pollutants in soil further includes drilling a temperature detection well in the target area for remediation of the polluted soil, and installing a temperature sensor in the temperature detection well.
According to a specific embodiment of the present invention, the number of the temperature detection wells is at least two.
According to the specific embodiment of the invention, the temperature sensors are uniformly arranged at equal intervals in the vertical direction in the same temperature detection well.
Through the design scheme, the invention can bring the following beneficial effects: the invention provides an in-situ electric heating desorption method for organic pollutants in soil, which overcomes the defects of the heating form of the conventional resistance heating technology, utilizes the change of electrochemical properties of the soil after the soil is punctured by high voltage, takes the resistance heat of the punctured soil as a heating medium, overcomes the problems of overhigh cost of a resistance rod, difficult transportation, inconvenient construction and installation, unrecyclable utilization and the like in the conventional resistance heating technology, simultaneously changes the electrochemical properties of a target soil layer, greatly increases the conductivity of the soil, accelerates the efficiency of energy conduction, reduces the period of soil remediation and further saves energy consumption. Meanwhile, the electrode self improves the water-containing access environment of the electrode well and the soil in the heating process, the heating range can extend to the stratum which is not punctured, the influence radius of the electrode well is enlarged, and the energy utilization efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limitation and are not intended to limit the invention in any way, and in which:
fig. 1 is a schematic view of an in-situ electric heating desorption system for soil organic pollutants in the embodiment of the invention.
The respective symbols in the figure are as follows: 1-high-voltage power frequency generator, 2-temperature sensing system, 3-air compressor, 4-ground control console, 5-soil, 6-temperature sensor, 7-electrode, 8-plasma conductive channel, 9-extraction well, 10-temperature detection well, 11-electrode well, 12-electrolyte solution, 13-extraction device, 14-reservoir and 15-integrated waste purification equipment.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the present invention is not limited by the following examples, and specific embodiments can be determined according to the technical solutions and practical situations of the present invention. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.
As shown in fig. 1, the in-situ electric heating desorption system for soil organic pollutants based on the in-situ electric heating desorption method for soil organic pollutants provided by the invention comprises a high-voltage power frequency heating system, a ground control system and a waste treatment system, wherein:
the high-voltage power frequency heating system comprises a high-voltage power frequency generator 1, electrode wells 11 and electrodes 7, wherein the electrode wells 11 are arranged in soil 5 of a polluted soil remediation target area, the number of the electrode wells 11 is even, the electrode wells are arranged in two rows, the two rows of the electrode wells 11 are symmetrically arranged, one row is used as an anode well, and the other row is used as a cathode well; the electrode 7 is arranged in the electrode well 11, and the input end of the electrode 7 is connected with the output end of the high-voltage power frequency generator 1; the input end of the high-voltage power frequency generator 1 is connected with a 380V alternating current power supply; the high-voltage power frequency generator 1 is used as an electrode power supply and is controlled by a ground control system to provide two voltages, namely 50Hz power frequency voltage and 1000V high-voltage power, for the electrode 7; the high-voltage power frequency generator 1 consists of a gear switch, a high-voltage transformer and an electric power regulator, wherein the high-voltage transformer is used for outputting 1000V high-voltage electricity, and the electric power regulator is used for outputting 50Hz power frequency electricity; the gear switch is used for switching gears of high-voltage breakdown and power frequency heating, specifically, the gear switch is connected with the vacuum circuit protector, is used for protecting a circuit when the gears are switched, is in communication connection with a ground control system, and is used for realizing that the high-voltage power frequency generator 1 outputs two voltages of 50Hz power frequency electricity and 1000V high-voltage electricity.
The high-voltage power frequency heating system also comprises an extraction well 9 and a reservoir 14, wherein the extraction well 9 is arranged in the soil 5 of the polluted soil remediation target area, and the extraction well 9 is positioned between the two rows of electrode wells 11; the reservoir 14 is arranged on the ground, the reservoir 14 is used for storing the electrolyte solution 12, and the electrolyte solution 12 is NaCl solution, (NH) solution 4 ) 2 SO 4 Solution, Fe (NO) 3 ) 3 Solutions or BaSO 4 A solution; the water reservoir 14 communicates with the inside of the electrode well 11 through a pipe so that the electrolyte solution 12 is injected into the electrode well 11.
The ground control system is a ground control main table 4 which is independently developed by Jilin university, the ground control main table 4 comprises a computer, a sensor and a PLC acquisition control device, and the ground control system belongs to the prior art and is detailed in 'Jilin nong' an oil shale underground in-situ cracking pilot test engineering [ A ]; the nineteenth national research project (geotechnical drilling and excavation project) academic exchange annual meeting discourse collection [ C ]; 2017 "is not separately described herein. The ground control main station 4 is respectively connected with the power control system, the pumping and injection gas control system and the temperature detection system through buses; the power control system comprises a high-voltage power frequency generator 1; the gas pumping and injecting control system comprises an air compressor 3 and an extraction device 13, the air compressor 3 is installed at the wellhead of the electrode well 11, the extraction device 13 is arranged at the wellhead of the extraction well 9, the gas pumping and injecting control system can enhance the heating effect and ensure the extraction of waste from the extraction well 9; the temperature detection system comprises a temperature sensing system 2 and at least two temperature detection wells 10, wherein the temperature sensors 6 in the same temperature detection well 10 are uniformly arranged at equal intervals in the vertical direction; the temperature sensing system 2 comprises ground display equipment and a temperature sensor 6, the temperature sensor 6 is installed in a temperature detection well 10, the temperature sensor 6 is connected with the ground display equipment through a cable, the temperature acquired by the temperature sensor 6 is displayed in real time through the ground display equipment, and real-time detection of the temperature of a target soil layer is guaranteed;
the waste treatment system employs an integrated waste purification apparatus 15, and specifically, the integrated waste purification apparatus 15 in the present embodiment employs a catalytic combustion waste gas treatment apparatus of shenyang, hengda, co-creation of environmental protection apparatus manufacturing limited. The inlet of the integrated waste cleaning device 15 is connected via an extraction pipe to the outlet of the extraction unit 13 at the wellhead of the extraction well 9.
The depth of the electrode well 11 and the extraction well 9 is 0.2m greater than that of the soil 5 polluted by organic matters, the operation can ensure that the heating range covers the whole polluted soil layer, and the discharged waste water and waste gas can be extracted to a waste treatment system on the ground by the extraction device 13 as far as possible, so that the deeper part of the soil 5 is prevented from being secondarily polluted.
The electrode 7 is positioned in the middle of the polluted soil layer of the organic matter polluted soil 5, so that the heating range is more reasonable, and the repaired soil layer is more comprehensive and three-dimensional.
A method for in-situ electrically heated desorption of soil organic pollutants, comprising the steps of:
s1: on-site preparation
Determining the range and the depth of the soil 5 to be repaired according to the site risk assessment report and the repair scheme, delimiting a contaminated soil repair target area, leveling the site, and preparing well hole arrangement and arranging ground equipment;
s2: well site deployment construction
Drilling an electrode well 11 and an extraction well 9 in a polluted soil remediation target area, wherein the depth of the electrode well 11 and the depth of the extraction well 9 are 0.2m greater than that of the organic matter polluted soil 5;
s3: surface equipment deployment
Deploying a ground control system, an electric control system, a pumping and injecting gas control system, a temperature sensing system 2, a reservoir 14 and an integrated waste purification device 15;
s4: electrode well 11 arrangement
Respectively arranging positive and negative electrodes 7 in an electrode well 11 according to the depth of the electrode well 11, simultaneously sealing an orifice, taking the electrode well 11 as a gas injection well, arranging an air compressor 3 at the wellhead of the electrode well 11, and connecting the air compressor 3 with a ground control system;
s5: extraction well 9 arrangement
Arranging an extraction device 13 at a wellhead of the extraction well 9, wherein the outlet end of the extraction device 13 is communicated with a waste treatment system, and meanwhile, the extraction device 13 is connected with a ground control system;
s6: contaminated soil heating remediation
The high-voltage power frequency generator 1 supplies power to the electrode 7, and the electrode 7 can complete the processes of high-voltage breakdown and power frequency electrification through the operation and control of the ground control system 4, so that the self heating repair of the polluted soil 5 is realized; meanwhile, a water reservoir 14 is constructed, electrolyte solution 12 prepared by adding electrolyte to the water reservoir 14 is injected into the electrode well 11.
Specifically, 1000V high-voltage electricity is applied to the electrodes 7, a high-voltage electric field is formed between the two rows of electrodes 7, the organic matter contaminated soil 5 between the two rows of electrodes 7 is punctured under the action of the high-voltage electric field to form a plasma conductive channel 8, the organic matter contaminated soil 5 is heated by adopting 50Hz power frequency electricity after the puncture, so that the thermal desorption remediation treatment of the organic matter contaminated soil 5 is completed, and meanwhile, waste is pumped out through an extraction device 13 at the well mouth of an extraction well 9 and is conveyed to a waste treatment system for treatment.
The gas injection well and the electrode well 11 share a well head, and the well head is sealed, so that the gas injection well and the extraction well 9 form a gas circulation, and waste extraction is facilitated.
The step S4 of arranging the electrodes 7 in the electrode wells 11 according to the depth of the electrode wells 11 specifically includes the following steps:
s401: calculating the position of the electrode 7 in the electrode well 11 according to the heating range of the high-voltage power frequency technology, and ensuring the heating effectiveness;
s402: the electrode 7 is connected with the high-voltage power frequency generator 1 through a cable, and the joint of the electrode 7 and the cable is sealed;
s403: an electrolyte solution 12 is added to the electrode well 11.
The length of the electrode 7 is generally determined according to the depth of a polluted soil layer, the high voltage of the electrode power supply is 1000V, and the power frequency is 50 Hz.
In the step S5, the arrangement of the extraction well 9, and the arrangement of the extraction device 13 at the wellhead of the extraction well 9 specifically include the following steps:
s501: installing an extraction device 13 at a wellhead of an extraction well 9, sealing the wellhead at the same time to ensure a negative pressure state in the well, and connecting an outlet of the extraction device 13 with a waste treatment system;
s502: the extraction well 9 should be drilled in the middle of the electrode well 11.
As a further description of the above technical solution: the method for in-situ electric heating desorption of the organic pollutants in the soil further comprises the step of installing a temperature detection system, wherein the temperature detection system is installed by the steps of arranging a temperature detection well 10 in a polluted soil remediation target area, installing a temperature sensor 6 in the temperature detection well 10, then connecting data output of the temperature sensor 6 with ground display equipment, and detecting the temperature of the soil 5 during remediation in real time.
And S6, detecting the polluted soil 5 with the depth corresponding to each electrode 7 in the in-situ thermal desorption repair area, stopping heating the soil 5 meeting the detection requirement, and continuously heating and repairing the electrodes 7 at the corresponding point positions of the soil layers with unqualified detection until the in-situ thermal desorption repair area is qualified for acceptance and exit.
The in-situ electric heating desorption system for the soil organic pollutants, which is based on the in-situ electric heating desorption method for the soil organic pollutants, organically integrates all devices into a whole. It should be emphasized that, for the above-mentioned individual devices, a specific structure for realizing each function to be realized exists in the prior art, and protocols, software or programs involved in the working process of each device also exist in the prior art, which are well known to those skilled in the art.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that various changes and modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious changes and modifications may be made within the scope of the present invention.

Claims (4)

1. An in-situ electric heating desorption method for soil organic pollutants is characterized by comprising the following steps:
step S1: selecting a contaminated soil remediation target area, and arranging an electrode well and an extraction well in the contaminated soil remediation target area; the number of the electrode wells is even, the electrode wells are arranged in two rows, the two rows of the electrode wells are symmetrically arranged, one row is used as an anode well, the other row is used as a cathode well, and the extraction well is positioned between the two rows of the electrode wells;
step S2: respectively installing an air compressor and an extraction device at the wellhead parts of the electrode well and the extraction well; the inlet end of the extraction device is communicated with the inside of the extraction well through an extraction pipeline, and the outlet end of the extraction device is connected with the inlet of the waste treatment system; the air compressor is communicated with the inside of the electrode well, and the air compressor and the extraction device are both in communication connection with a ground control system;
step S3: inserting an electrode in each electrode well, injecting electrolyte solution into the electrode wells until the electrodes are submerged, and sealing the electrode wells and the extraction well mouths; the input end of the electrode is connected with an electrode power supply, the electrode power supply is in communication connection with a ground control system, and the electrode power supply is used for providing two voltages of 50Hz power frequency electricity and 1000V high voltage electricity for the electrode; when a first control signal is received, 1000V high-voltage electricity is provided for the electrode, and when a second control signal is received, 50Hz power frequency electricity is provided for the electrode;
step S4: contaminated soil heating remediation
Applying 1000V high-voltage electricity to the electrodes in the step S3, forming a high-voltage electric field between the two rows of electrodes, puncturing the soil polluted by the organic matters between the two rows of electrodes under the action of the high-voltage electric field to form a plasma conductive channel, heating the soil polluted by the organic matters by adopting 50Hz power frequency electricity after puncturing, thereby completing thermal desorption repair treatment of the soil polluted by the organic matters, simultaneously extracting the wastes in the extraction well by an extraction device, conveying the wastes to a waste treatment system, injecting air into the electrode well by an air compressor while extracting the wastes, and taking the electrode well as an air injection well at the moment;
the depth of the electrode well and the extraction well is 0.2m greater than that of the soil polluted by organic matters;
the electrode is positioned in the middle of a polluted soil layer of the soil polluted by organic matters.
2. The in-situ electric heating desorption method for soil organic pollutants according to claim 1, which is characterized in that: before step S4, drilling a temperature detection well in the contaminated soil remediation target area, and installing a temperature sensor in the temperature detection well.
3. The in-situ electric heating desorption method for soil organic pollutants according to claim 2, which is characterized in that: the number of the temperature detection wells is at least two.
4. The in-situ electric heating desorption method for organic pollutants in soil according to claim 3, which is characterized in that: the temperature sensors are uniformly arranged at equal intervals in the vertical direction in the same temperature detection well.
CN202110779067.XA 2021-07-09 2021-07-09 In-situ electric heating desorption method for soil organic pollutants Active CN113477693B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110779067.XA CN113477693B (en) 2021-07-09 2021-07-09 In-situ electric heating desorption method for soil organic pollutants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110779067.XA CN113477693B (en) 2021-07-09 2021-07-09 In-situ electric heating desorption method for soil organic pollutants

Publications (2)

Publication Number Publication Date
CN113477693A CN113477693A (en) 2021-10-08
CN113477693B true CN113477693B (en) 2022-08-12

Family

ID=77938339

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110779067.XA Active CN113477693B (en) 2021-07-09 2021-07-09 In-situ electric heating desorption method for soil organic pollutants

Country Status (1)

Country Link
CN (1) CN113477693B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114798707A (en) * 2022-04-15 2022-07-29 海南省智慧环境投资控股有限公司 Organic pollutant soil remediation method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5190405A (en) * 1990-12-14 1993-03-02 Shell Oil Company Vacuum method for removing soil contaminants utilizing thermal conduction heating
CN101439346A (en) * 2008-11-26 2009-05-27 大连理工大学 Method and device for repairing soil using discharge plasma
CN103272839B (en) * 2013-04-28 2014-12-24 中国科学院南京土壤研究所 Low-temperature plasma processing device and method for persistent organic pollutants in soil
CN109569230A (en) * 2017-09-29 2019-04-05 黄蕊 High energy active oxygen ion generator based on high voltage narrow pulse
CN108114970A (en) * 2017-12-21 2018-06-05 永清环保股份有限公司 A kind of contaminated soil original position thermal desorption repair system and method
CN111977754A (en) * 2018-06-05 2020-11-24 南京怡可帮生态环境科技有限公司 Composite efficient reinforced remediation equipment for soil groundwater and water body organic pollution and application
CN110479751A (en) * 2019-09-14 2019-11-22 合肥学院 A kind of prosthetic device and restorative procedure of soil organic pollutant
CN110732551B (en) * 2019-11-19 2021-06-01 沈阳化工研究院有限公司 Microwave and high-voltage pulse discharge composite remediation equipment for organic contaminated soil
CN112170471A (en) * 2020-08-27 2021-01-05 浙江建禾土壤修复设计研究有限公司 In-situ thermal desorption method and in-situ thermal desorption system for contaminated soil
CN112547783A (en) * 2020-12-25 2021-03-26 苏州精英环保有限公司 In-situ thermal desorption system and method for composite contaminated soil

Also Published As

Publication number Publication date
CN113477693A (en) 2021-10-08

Similar Documents

Publication Publication Date Title
CN102941217B (en) Electric power repairing device and method for cylindrical arrangement electrode
CN108114970A (en) A kind of contaminated soil original position thermal desorption repair system and method
CN208050568U (en) A kind of contaminated soil original position thermal desorption repair system
CN113477693B (en) In-situ electric heating desorption method for soil organic pollutants
CN112517622B (en) Contaminated soil strengthening in-situ thermal desorption heating device and method
CN105834205A (en) In-situ electric heating desorption restoration technology and device for contaminated site
CN110090856A (en) Soil underground water linkage processing unit and its processing method
CN105312314A (en) Repairing system and method for heavy metal-organic combined polluted soil and underground water
CN109108066B (en) Electric-chemical combined restoration system and method for organic matter polluted soil
CN109396168B (en) Combined heat exchanger for in-situ thermal remediation of polluted soil and soil thermal remediation system
CN109848193B (en) Underground water in-situ remediation method based on hydraulic barrier
CN108906869A (en) A kind of contaminated soil in-situ heat repair system and method using distributed energy
CN206492791U (en) Resistance heating thermal desorption repair system in situ for VOCs contaminated sites
CN103215946A (en) Electroosmosis electrode and electroosmosis draining system thereof
CN112570437A (en) System and method for restoring organic polluted site by in-situ heat conduction coupling electroosmosis well point dewatering
CN106269837A (en) The repair system of a kind of volatility organic polluted soil and method
CN112170471A (en) In-situ thermal desorption method and in-situ thermal desorption system for contaminated soil
CN105750321B (en) A method of repairing PCBs contaminated soils using two-way ferry-boat formula United Technologies
CN111515237A (en) Soil remediation device and method
CN211888396U (en) In-situ resistance heating and steam enhanced extraction coupling system for repairing polluted site
CN206585823U (en) A kind of high efficiency low-temperature plasma generator
CN109304351A (en) A kind of device and method for four-dimensional tracking and injection rehabilitating soil and underground water
CN209287962U (en) Contaminated soil in-situ heat reparation combination exchanger and Soil Thermal repair system
CN215543679U (en) Peculiar smell material normal position clearing device
CN202667240U (en) Petroleum-contaminated soil remediation device on basis of high-voltage static electricity

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant