CN113828627B - In-situ thermal desorption coupled chemical oxidation-reduction repair system - Google Patents
In-situ thermal desorption coupled chemical oxidation-reduction repair system Download PDFInfo
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- CN113828627B CN113828627B CN202111210314.0A CN202111210314A CN113828627B CN 113828627 B CN113828627 B CN 113828627B CN 202111210314 A CN202111210314 A CN 202111210314A CN 113828627 B CN113828627 B CN 113828627B
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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
- B09C1/062—Reclamation of contaminated soil thermally by using electrode or resistance heating elements
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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
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
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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
- B09C1/08—Reclamation of contaminated soil chemically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The invention discloses an in-situ thermal desorption coupled chemical oxidation-reduction restoration system, wherein a temperature monitoring well, an underground water monitoring well and a multifunctional electrode well are distributed in a polluted site to be restored, a surface blocking layer covers the upper part of the polluted site, the temperature monitoring well is used for monitoring the temperature of site soil, and the underground water monitoring well is used for collecting an underground water sample in the site soil; the multifunctional electrode well heats the field soil to a preset temperature under the support of an energy supply system, and a chemical redox agent is injected into the multifunctional electrode well by a chemical injection system; the gas phase extraction system is communicated with the multifunctional electrode well, and gaseous pollutants desorbed by heat are conveyed to the pollutant treatment system and are discharged after reaching the standard. Through the technical scheme of the invention, the underground environment which is beneficial to the diffusion and reaction of the medicament is generated under the coupling action of thermal desorption and chemical oxidation reduction, the efficiency of removing pollutants is improved, the energy consumption of in-situ thermal desorption operation is reduced, and the purification cost of waste water and tail gas is reduced.
Description
Technical Field
The invention relates to the technical field of soil and underground water pollution remediation, in particular to a remediation system with in-situ thermal desorption coupled with chemical oxidation reduction.
Background
With the implementation of the soil pollution prevention method and the matched detailed rules thereof, the market demand of the soil pollution prevention is further released. For the treatment and restoration of organic pollution sites, people are disturbed by secondary pollution risks such as odor and the like, and the organic pollution sites are concerned. At present, the in-situ remediation technology is deeply welcomed by the industry due to the characteristic of small risk of secondary pollution. Common in-situ remediation technologies for organic contaminated sites comprise in-situ thermal desorption, in-situ chemical oxidation reduction, gas phase/multiphase extraction and the like, wherein the cooperative use of multiple technologies is a hotspot of recent research.
The organic pollutants can be quickly and efficiently treated by resistance heating in-situ thermal desorption, but the maximum heating temperature is not more than the boiling point of water due to the limitation of the heating principle, and the pollutant treatment range is mainly limited by volatile organic compounds with the boiling points less than 100 ℃; and also has the disadvantages of large energy consumption and long processing time. The chemical reduction oxidation technology has low energy consumption, but is often limited by underground environment, so that the treatment efficiency is low, and the optimal purification effect cannot be exerted.
Disclosure of Invention
In order to solve the problems, the invention provides an in-situ thermal desorption coupled chemical oxidation reduction repair system, which heats soil and underground water through a current thermal effect, carries out in-situ thermal desorption treatment on organic pollutants, injects a chemical oxidation reduction agent into a polluted site after heating to a certain temperature, generates an underground environment beneficial to agent diffusion and reaction under the coupling action of thermal desorption and chemical oxidation reduction, improves the pollutant removal efficiency, reduces the in-situ thermal desorption operation energy consumption, and reduces the purification cost of waste water and tail gas.
In order to achieve the above object, the present invention provides an in-situ thermal desorption coupled chemical oxidation-reduction remediation system, comprising: the system comprises a multifunctional electrode well, a temperature monitoring well, a groundwater monitoring well, a surface barrier layer, an energy supply system, a pesticide injection system, a vapor extraction system and a pollutant treatment system;
the temperature monitoring well, the underground water monitoring well and the multifunctional electrode well are distributed in a polluted site to be repaired, the surface blocking layer covers the temperature monitoring well, the underground water monitoring well and the multifunctional electrode well, the temperature monitoring well is used for monitoring the temperature of the site soil, and the underground water monitoring well is used for collecting underground water samples in the site soil;
the multifunctional electrode well is connected with the energy supply system, field soil is heated to a preset temperature under the support of the energy supply system, and the chemical injection system injects a chemical redox agent into the multifunctional electrode well;
the gas phase extraction system penetrates through the surface barrier layer through a gas phase extraction pipeline to be communicated with the multifunctional electrode well, the gas phase extraction system conveys gaseous pollutants thermally desorbed from the multifunctional electrode well to the pollutant treatment system, and the pollutant treatment system discharges the pollutants after the pollutants reach the standard.
In the above technical solution, preferably, a conductive filler layer, a bentonite filling layer, an electrode tube and a drug injection pipeline are arranged in the multifunctional electrode well;
the multifunctional electrode well lower layer is filled with conductive filler to form the conductive filler layer, the upper layer is filled with bentonite to form a bentonite filling layer, and the gas phase extraction pipeline extends to the conductive filler layer;
the electrode tube adopts the steel pipe, be provided with the vertical sieve seam that sets up of multiunit on the pipe wall of electrode tube, the electrode tube pass through the cable with energy supply system is connected, electrode tube upper end opening passes through the injection pipeline with the injection system is linked together.
In the above technical solution, preferably, the multifunctional electrode well further comprises a protection tube;
the protection tube cover is located the injection pipeline the electrode tube with the cable is peripheral, and passes the surface barrier layer inserts in the multi-functional electrode well, the top adopts the pipe cap shutoff, so that the injection pipeline the electrode tube with the cable for the surface barrier layer forms seal structure, the protection tube inserts the degree of depth in the multi-functional electrode well is not less than 20 centimetres.
In the above technical solution, preferably, the drug injection system includes a dispensing unit and a pressurization injection unit, the dispensing unit is configured to configure the chemical redox reagent, and the pressurization injection unit injects the configured chemical redox reagent into the electrode tube through the drug injection pipeline.
In the above technical solution, preferably, the vapor extraction system includes a steam-water separation unit, a vacuum blower, a gas purification unit, a wastewater pretreatment unit, and a chimney;
the inlet end of the steam-water separation unit is communicated to the multifunctional electrode well through the gas phase extraction pipeline to separate steam from water of extracted gaseous pollutants, the outlet end of the steam-water separation unit conveys the separated gas to the gas purification unit through the driving of the vacuum fan, and the separated liquid is conveyed to the wastewater pretreatment unit;
and the gas purified by the gas purification unit is discharged through the chimney, and the liquid generated after purification is conveyed to the wastewater pretreatment unit.
In the above technical scheme, preferably, the steam-water separation unit includes a first steam-water separator, a heat exchanger and a second steam-water separator that are connected in sequence, and the first steam-water separator and the second steam-water separator are connected with the temporary wastewater storage tank in the wastewater pretreatment unit respectively.
In the above technical solution, preferably, the surface barrier layer includes a metal mesh layer and a concrete layer, the metal mesh layer is located at a lower layer of the concrete layer, and a thickness of the concrete layer is 10 to 20 cm.
In the above technical solution, preferably, the multi-functional electrode wells are distributed at a distribution interval of 3 to 6 meters, the conductive packing layer in the multi-functional electrode wells adopts conductive particles with a particle size of 10 to 30 meshes, and the width of the sieve seam formed on the electrode tube is not less than 1 mm.
In the above technical scheme, preferably, the temperature monitoring well is internally provided with a monitoring device, the monitoring device comprises a temperature sensor, the temperature sensor is connected with an external display server, and the temperature monitoring wells are distributed in the polluted site to be repaired.
In the above technical solution, preferably, the energy supply system includes an electric energy transmission device, a transformer and an electric energy control unit, the electric energy transmission device is connected to the transformer, the transformer is connected to the electrode tube, the transformer converts the incoming voltage transmitted to the electrode tube into the working voltage suitable for the electrode tube, and the electric energy control unit is used for controlling the energy supply voltage and the function switch.
Compared with the prior art, the invention has the beneficial effects that: soil and groundwater are heated through the current heat effect, in-situ thermal desorption treatment is carried out on organic pollutants, chemical redox agents are injected into a polluted site after the organic pollutants are heated to a certain temperature, under the coupling action of thermal desorption and chemical redox, an underground environment which is favorable for agent diffusion and reaction is generated, the pollutant removal efficiency is improved, in-situ thermal desorption operation energy consumption is reduced, and the purification cost of waste water and tail gas is reduced.
Drawings
Fig. 1 is a schematic overall layout of an in-situ thermal desorption coupled chemical oxidation-reduction repair system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a multifunctional electrode well according to an embodiment of the present invention.
In the drawings, the correspondence between each component and the reference numeral is:
1. a multifunctional electrode well; 101. a conductive filler layer; 102. a bentonite filling layer; 103. an electrode tube; 104. a drug injection pipeline; 105. protecting the tube; 106. a cable; 107. a vapor extraction pipeline; 2. a temperature monitoring well; 3. an underground water monitoring well; 4. a surface barrier layer; 5. a steam-water separation unit; 6. a vacuum fan; 7. a gas purification unit; 8. a chimney; 9. a wastewater pretreatment unit; 10. an energy supply system; 11. a medicine injection system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1 and fig. 2, the in-situ thermal desorption coupled chemical oxidation-reduction repair system provided by the present invention comprises: the system comprises a multifunctional electrode well 1, a temperature monitoring well 2, an underground water monitoring well 3, a surface barrier layer 4, an energy supply system 10, a medicine injection system 11, a vapor extraction system and a pollutant treatment system;
the temperature monitoring well 2, the underground water monitoring well 3 and the multifunctional electrode well 1 are distributed in a polluted site to be repaired, the surface blocking layer 4 covers the temperature monitoring well 2, the underground water monitoring well 3 and the multifunctional electrode well 1 for blocking, the temperature monitoring well 2 is used for monitoring the temperature of the site soil, and the underground water monitoring well 3 is used for collecting underground water samples in the site soil;
the multifunctional electrode well 1 is connected with an energy supply system 10, the field soil is heated to a preset temperature under the support of the energy supply system 10, and a chemical redox agent is injected into the multifunctional electrode well 1 by a chemical injection system 11;
the gas phase extraction system passes through the surface barrier layer 4 through the gas phase extraction pipeline 107 and is communicated with the multifunctional electrode well 1, the gas phase extraction system conveys gaseous pollutants desorbed from the multifunctional electrode well 1 in heat to the pollutant treatment system, and the pollutant treatment system discharges the pollutants after reaching the standard.
In this embodiment, through electric current fuel factor heating soil and groundwater, carry out normal position thermal desorption to organic pollutant and handle to after heating to the uniform temperature, pour into chemical redox medicament into the contaminated site, under thermal desorption and the coupling effect of chemical redox, produce the underground environment that is favorable to medicament diffusion, reaction, improved the efficiency of getting rid of the pollutant, reduced normal position thermal desorption operation energy consumption, reduced the purification cost of waste water and tail gas.
Specifically, multi-functional electrode well 1 is arranged in heating soil and groundwater in the place, realizes normal position thermal desorption, and temperature monitoring well 2 passes through the thermocouple module, realizes the on-line monitoring temperature to stop heating after soil and groundwater heating to predetermineeing the temperature range in the place, the construction of temperature resistant material is preferably adopted to groundwater monitoring well 3 for administer in-process groundwater sample collection, the pollution repair situation in current contaminated site is judged according to groundwater sample.
Through the mode of multi-functional electrode well 1 resistance heating, heat soil and groundwater temperature to target temperature, pour into redox reagent into to the underground to combine the vapor extraction effect, finally realize getting rid of the pollutant from polluting the place.
In the above embodiment, preferably, a conductive filler layer 101, a bentonite filling layer 102, an electrode tube 103 and a chemical injection pipeline 104 are arranged in the multifunctional electrode well 1;
the lower layer of the multifunctional electrode well 1 is filled with conductive filler to form a conductive filler layer 101, wherein the conductive filler layer 101 adopts conductive particles with the particle size of 10-30 meshes, such as graphite particles or stainless steel balls, the upper layer is filled with bentonite to form a bentonite filling layer 102, and the gas phase extraction pipeline 107 extends to the conductive filler layer 101;
electrode tube 103 adopts the steel pipe, can adopt the seamless steel pipe of 57 x 3.5 specifications, length is decided along with the pollution depth, be provided with the width that the multiunit is vertical to be set up on the pipe wall of electrode tube 103 in the interval of pollution depth and be not less than 1 millimeter's screen cut, screen cut density is suitable with not influencing tubular product intensity, electrode tube 103 is connected with energy supply system 10 through cable 106, realize thermal desorption through the resistance heating mode, electrode tube 103 upper end opening is linked together through the PPR injection pipeline 104 and the injection system 11 of DN32 specifications.
Preferably, a plurality of multifunctional electrode wells 1 are distributed on a polluted site to be repaired, and the distribution distance is 3-6 m.
In the above embodiment, preferably, the multifunctional electrode well 1 further comprises a protection tube 105; the protection tube 105 is sleeved on the periphery of the chemical injection pipeline 104, the electrode tube 103 and the cable 106, penetrates through the surface barrier layer 4 and is inserted into the multifunctional electrode well 1, a 90X 3.0 or larger PVC-C tube can be selected, the top end of the protection tube is plugged by a tube cap with a tube hole, so that the chemical injection pipeline 104, the electrode tube 103 and the cable 106 form a sealing structure relative to the surface barrier layer 4, and the depth of the protection tube 105 inserted into the multifunctional electrode well 1 is not less than 20 cm.
In the above embodiment, preferably, the injection system 11 includes a dispensing unit for dispensing a chemical redox reagent, such as sodium persulfate solution with a concentration of 150g/L, and a pressurized injection unit for injecting the dispensed chemical redox reagent into the electrode tube 103 through the injection line 104.
In the above embodiment, preferably, the vapor extraction system includes a steam-water separation unit 5, a vacuum fan 6, a gas purification unit 7, a wastewater pretreatment unit 9, and a chimney 8;
the inlet end of the steam-water separation unit 5 is communicated into the multifunctional electrode well 1 through a gas phase extraction pipeline 107, extracted gaseous pollutants are subjected to steam-water separation, the outlet end of the steam-water separation unit 5 conveys the separated gas to a gas purification unit 7 through the driving of a vacuum fan 6, and the separated liquid is conveyed to a wastewater pretreatment unit 9;
the gas purified by the gas purification unit 7 is discharged through a chimney 8, and the liquid generated after the purification treatment is conveyed to a wastewater pretreatment unit 9.
Wherein, the vapor extraction pipeline 107 can be a PPR pipe with DN32 specification, and the lower end is provided with a sieve slot with the width less than 1mm so as to extract the gaseous pollutants.
In the above embodiment, preferably, the steam-water separation unit 5 includes a first steam-water separator, a heat exchanger and a second steam-water separator, which are connected in sequence, and the first steam-water separator and the second steam-water separator are respectively connected to the temporary wastewater storage tank in the wastewater pretreatment unit 9, so that steam-water separation is realized through heat exchange classification.
In the above embodiment, preferably, the surface barrier layer 4 is disposed on the upper side of the original soil layer in the repair area, and includes a metal mesh layer and a concrete layer, the metal mesh layer is located on the lower layer of the concrete layer, the concrete layer is formed by casting C20 concrete, the thickness of the concrete layer is 10-20 cm, and an expansion joint with a depth of 5-10cm is cut according to a 5m × 5m grid.
In the above embodiment, preferably, monitoring equipment is installed in the temperature monitoring wells 2, the monitoring equipment includes a temperature sensor, the temperature sensor is connected with an external display server, and the plurality of temperature monitoring wells 2 are distributed in the contaminated site to be repaired.
In the above embodiment, preferably, the energy supply system 10 includes an electric energy transmission device, a transformer, and an electric energy control unit, the electric energy transmission device is connected to the transformer, the transformer is connected to the electrode tube 103, the transformer converts the input voltage into an operating voltage suitable for the electrode tube 103, and the electric energy control unit is used for controlling the energy supply voltage and the function switch.
According to the in-situ thermal desorption coupled chemical oxidation-reduction repair system disclosed in the above embodiments, the repair process and repair effect of the repair system will be described below by using specific embodiments.
Before the repair system is heated, the average underground temperature is about 23 ℃. Firstly, the multifunctional electrode well 1 is powered through the energy supply system 10, and after the average temperature of soil and underground water monitored by the temperature monitoring well 2 reaches the target temperature, the medicine injection system 11 is started, and the redox reagent is injected into the underground electrode tubes 103 in batches.
The system runs for 68 days, wherein the energy supply system 10 runs independently for 47 days, and the average temperature is raised to 90 ℃; the injection system 11 and the in-situ thermal desorption are synchronously operated for 21 days, and the average temperature is maintained at 80-90 ℃.
According to the detection of a sample collected in a polluted site to be repaired, after the operation is finished, the content of benzene in the soil is reduced to be below 0.4mg/kg from 37mg/kg at most; the chlorobenzene content is reduced to below 14mg/kg from 237mg/kg at most; the content of chloroform is reduced to below 0.1mg/kg from the maximum 17 mg/kg; the nitrobenzene content is reduced from maximum 22mg/kg to below 7.9 mg/kg.
The concentration of benzene in the groundwater is reduced to below 0.27mg/L from 6.2mg/L at most; the concentration of chlorobenzene is reduced to 3.1mg/L from the maximum 92 mg/L; the concentration of chloroform is reduced to below 0.06mg/L from the maximum 1.3 mg/L; the concentration of nitrobenzene is reduced from 1.2mg/L to below 0.15mg/L at most.
A control test which only adopts an in-situ thermal desorption technology shows that the running time for reaching similar removal rate reaches 103 days under the same running load condition. The coupling system can shorten the treatment period by 46 percent, save the energy consumption by more than 50 percent, and reduce the cost of corresponding waste water and tail gas by about 50 percent. Compared with a control test adopting a single-purification chemical oxidation technology, the removal rate of the pollutants can be improved by 19-43%.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An in-situ thermal desorption coupled chemical oxidation-reduction remediation system, comprising: the system comprises a multifunctional electrode well, a temperature monitoring well, an underground water monitoring well, a surface barrier layer, an energy supply system, a pesticide injection system, a vapor extraction system and a pollutant treatment system;
the temperature monitoring well, the underground water monitoring well and the multifunctional electrode well are distributed in a polluted site to be repaired, the surface blocking layer covers the temperature monitoring well, the underground water monitoring well and the multifunctional electrode well, the temperature monitoring well is used for monitoring the temperature of the site soil, and the underground water monitoring well is used for collecting underground water samples in the site soil;
the multifunctional electrode well is connected with the energy supply system, field soil is heated to a preset temperature under the support of the energy supply system, and the chemical injection system injects a chemical redox agent into the multifunctional electrode well;
the gas phase extraction system penetrates through the surface barrier layer through a gas phase extraction pipeline to be communicated with the multifunctional electrode well, the gas phase extraction system conveys gaseous pollutants thermally desorbed from the multifunctional electrode well to the pollutant treatment system, and the pollutant treatment system discharges the pollutants after the pollutants reach the standard;
the multifunctional electrode well is internally provided with a conductive packing layer, a bentonite packing layer, an electrode tube, a medicine injection pipeline and a protection tube;
the multifunctional electrode well lower layer is filled with conductive filler to form the conductive filler layer, the upper layer is filled with bentonite to form a bentonite filling layer, and the gas phase extraction pipeline extends to the conductive filler layer;
the electrode tube is made of a steel tube, a plurality of groups of vertically arranged screen cuts are arranged on the tube wall of the electrode tube, the electrode tube is connected with the energy supply system through a cable, and an opening at the upper end of the electrode tube is communicated with the medicine injection system through the medicine injection pipeline;
the protection tube sleeve is located the injection pipeline the electrode tube with the cable is peripheral, and passes the surface barrier layer inserts in the multi-functional electrode well, the top adopts the pipe cap shutoff, so that the injection pipeline the electrode tube with the cable for the surface barrier layer forms seal structure, the protection tube inserts the degree of depth in the multi-functional electrode well is not less than 20 centimetres.
2. The in-situ thermal desorption coupled chemical oxidation-reduction repair system according to claim 1, wherein the drug injection system comprises a dispensing unit and a pressurizing injection unit, the dispensing unit is used for configuring the chemical oxidation-reduction drug, and the pressurizing injection unit injects the configured chemical oxidation-reduction drug into the electrode tube through the drug injection pipeline.
3. The in-situ thermal desorption coupled chemical oxidation reduction restoration system according to claim 1, wherein the gas phase extraction system comprises a steam-water separation unit, a vacuum fan, a gas purification unit, a wastewater pretreatment unit and a chimney;
the inlet end of the steam-water separation unit is communicated to the multifunctional electrode well through the gas phase extraction pipeline to separate steam from water of extracted gaseous pollutants, the outlet end of the steam-water separation unit conveys the separated gas to the gas purification unit through the driving of the vacuum fan, and the separated liquid is conveyed to the wastewater pretreatment unit;
and the gas purified by the gas purification unit is discharged through the chimney, and the liquid generated after purification is conveyed to the wastewater pretreatment unit.
4. The in-situ thermal desorption coupled chemical oxidation-reduction remediation system of claim 3, wherein the steam-water separation unit comprises a first steam-water separator, a heat exchanger and a second steam-water separator which are connected in sequence, and the first steam-water separator and the second steam-water separator are respectively connected with a temporary wastewater storage tank in the wastewater pretreatment unit.
5. The in-situ thermal desorption coupled chemical oxidation reduction restoration system according to claim 1, wherein the surface barrier layer comprises a metal mesh layer and a concrete layer, the metal mesh layer is positioned under the concrete layer, and the thickness of the concrete layer is 10-20 cm.
6. The in-situ thermal desorption coupled chemical oxidation-reduction remediation system of claim 1, wherein the multifunctional electrode wells are distributed, the distribution spacing is 3-6 m, the conductive filler layer in the multifunctional electrode wells is made of conductive particles with the particle size of 10-30 meshes, and the width of the sieve seam formed on the electrode tube is not less than 1 mm.
7. The in-situ thermal desorption coupled chemical oxidation-reduction remediation system of claim 1, wherein monitoring equipment is installed in the temperature monitoring wells, the monitoring equipment comprises temperature sensors, the temperature sensors are connected with an external display server, and the temperature monitoring wells are distributed in the polluted site to be remediated.
8. The in-situ thermal desorption coupled chemical oxidation-reduction remediation system of claim 1, wherein the energy supply system comprises an electric energy transmission device, a transformer and an electric energy control unit, the electric energy transmission device is connected with the transformer, the transformer is connected with the electrode tube, the transformer converts the transmitted incoming voltage into a working voltage suitable for the electrode tube, and the electric energy control unit is used for controlling the energy supply voltage and the function switch.
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| CN114453404B (en) * | 2021-12-28 | 2024-04-16 | 中科鼎实环境工程有限公司 | Thermal coupling restoration method for polluted site |
| CN114273411B (en) * | 2022-01-05 | 2022-11-25 | 北京高能时代环境技术股份有限公司 | Combined restoration system and restoration method for organic polluted site |
| CN114101305A (en) * | 2022-01-27 | 2022-03-01 | 北京高能时代环境技术股份有限公司 | In-situ low-temperature enhanced chemical oxidation remediation system and method for organic contaminated site |
| CN114226447B (en) | 2022-02-28 | 2022-05-06 | 广东工业大学 | Heat-assisted in-situ chemical oxidation repair and adjustment system and adjustment method |
| CN115069754B (en) * | 2022-05-19 | 2023-07-18 | 北京高能时代环境技术股份有限公司 | Electrode well structure and repair system for in-situ thermal desorption-electrocatalytic oxidation |
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| CN214133309U (en) * | 2020-12-25 | 2021-09-07 | 苏州精英环保有限公司 | Electrode structure for in-situ thermal desorption |
| CN112474768A (en) * | 2020-12-28 | 2021-03-12 | 苏州精英环保有限公司 | Electric heating reinforced in-situ chemical oxidation repairing device for organic polluted site |
| CN112845572A (en) * | 2021-01-11 | 2021-05-28 | 中科鼎实环境工程有限公司 | Modularization electric heat coupling normal position chemistry is clear away and is equipped |
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