CN112474768A - Electric heating reinforced in-situ chemical oxidation repairing device for organic polluted site - Google Patents
Electric heating reinforced in-situ chemical oxidation repairing device for organic polluted site Download PDFInfo
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- CN112474768A CN112474768A CN202011572338.6A CN202011572338A CN112474768A CN 112474768 A CN112474768 A CN 112474768A CN 202011572338 A CN202011572338 A CN 202011572338A CN 112474768 A CN112474768 A CN 112474768A
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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
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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
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
- B09C1/085—Reclamation of contaminated soil chemically electrochemically, e.g. by electrokinetics
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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 electric heating strengthening in-situ chemical oxidation repair device for an organic polluted site, which comprises: the injection heating unit, the electric strengthening unit, the extraction unit and the monitoring unit are respectively connected with the heating unit, the electric strengthening unit and the extraction unit for real-time monitoring and control. Through the mode, the electric heating strengthening in-situ chemical oxidation repair device for the organic polluted site, disclosed by the invention, has the advantages of capability of being used for low-permeability soil and no secondary pollution, and simultaneously has the heat function added in an injector, the medicament utilization rate and the repair effect are obviously improved, the technical application scene is wider, the cost waste is effectively avoided, and the defects existing in the conventional in-situ chemical oxidation technology are overcome.
Description
Technical Field
The invention relates to the technical field of soil remediation, in particular to an electric heating reinforced in-situ chemical oxidation remediation device for an organic contaminated site.
Background
In recent years, with the continuous development of industrial industry in China, the problem of the polluted site brought by the pollution is gradually solved, and a polluted site repairing technology with good repairing effect and small secondary pollution is imperative to seek. In the in-situ chemical oxidation technology, chemical agents are injected into a polluted site to perform oxidation reaction with organic pollutants, and macromolecular organic pollutants are converted into small molecules or directly mineralized, so that the repairing effect is achieved.
The in-situ chemical oxidation technology has the characteristics of simple construction, short repair period and the like, and is mostly applied to the repair of actual polluted sites. However, the technology mainly depends on the soil diffusion action for mass transfer, and the application of the technology in some polluted sites with poor permeability is limited to a certain extent.
Disclosure of Invention
The invention provides an electric heating strengthening in-situ chemical oxidation repairing device for an organic pollution site, which overcomes the defects of the prior art, couples the in-situ chemical oxidation technology with the electric repairing technology, simultaneously adds a thermal function in an injector, realizes the combined action of multiple repairing technologies, improves the utilization rate of an oxidant and the migration efficiency of a medicament, enhances the overall repairing effect, and has wider technical application scenes.
In order to solve the technical problems, the invention adopts a technical scheme that:
the utility model provides an electric heat strengthens normal position chemical oxidation prosthetic devices for organic contaminated site, includes: an injection heating unit, an electric strengthening unit, an extraction unit and a monitoring unit, wherein the monitoring unit is respectively connected with the heating unit, the electric strengthening unit and the extraction unit for real-time monitoring and control,
an injection heating unit: comprises an injection heating rod and a heating medicine injection device connected with the injection heating rod, wherein the heating medicine injection device comprises a medicine storage stirring tank, a medicine injection pump and a heating device, the injection heating rod comprises an outer tube, an injection hole and a medicine injection pipeline,
the medicament storage stirring tank is connected with the upper end of the medicament injection pipeline through the medicament injection pump, the medicament injection pipeline is arranged in the outer pipe, a plurality of injection holes communicated with the medicament injection pipeline are arranged on the outer pipe in an array manner, the outer pipe is connected with the heating device,
an electric strengthening unit: comprises an electrode plate and a direct current weak power supply, wherein the direct current weak power supply is connected with the electrode plate through a lead,
an extraction unit: comprises an extraction well, an extraction pump and a gas-liquid separation treatment device, wherein the gas-liquid separation treatment device is connected with an extraction pipeline through the extraction pump, the extraction pipeline extends into the extraction well,
a monitoring unit: including monitoring well and be used for acquireing and detect the sample monitoring devices of monitoring well in the sample.
In a preferred embodiment of the present invention, the outer tube is made of a heat conductive material.
In a preferred embodiment of the present invention, the electrode plate has a built-up structure.
In a preferred embodiment of the present invention, the gas-liquid separation processing apparatus includes a water-gas separation device, an exhaust gas collection device, and a waste liquid collection device.
The invention has the beneficial effects that: the method has the advantages of simple equipment, high restoration efficiency and wide application range, can be applied to restoration of low-permeability soil compared with the traditional in-situ chemical oxidation technology, obviously improves the medicament utilization rate and the restoration effect, effectively avoids cost waste, and makes up for the defects existing in the traditional in-situ chemical oxidation technology.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a preferred embodiment of an electro-thermally enhanced in-situ chemical oxidation remediation device for an organically contaminated site according to the present invention;
FIG. 2 is a schematic partial structural view of an electro-thermally enhanced in-situ chemical oxidation remediation device for organic contaminated sites according to a preferred embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an embodiment of the present invention includes:
an electric heating strengthening in-situ chemical oxidation restoration device for an organic polluted site is characterized in that a chemical oxidant is injected during restoration, the oxidant is activated by heating, the generation of oxidizing free radicals is promoted, the utilization rate of a medicament is improved, and the medicament is more actively diffused in soil; meanwhile, a direct-current weak electric field is applied to the soil, the migration of the medicament in the soil is enhanced by the action of the electric field, the remediation of the hypotonic soil is realized, and the overall efficiency of the equipment is improved.
An electric heating strengthening in-situ chemical oxidation restoration device for an organic polluted site, which structurally comprises: the injection heating unit, the electric strengthening unit, the extraction unit and the monitoring unit are respectively connected with the heating unit, the electric strengthening unit and the extraction unit for real-time monitoring and control.
An injection heating unit: comprises an injection heating rod 1 and a heating medicine injection device 2 connected with the injection heating rod.
The heating medicine injection device comprises a medicine storage stirring tank 21, a medicine injection pump 22 and a heating device 23.
The injection heating rod comprises an outer tube 11, injection holes 12 and a medicament injection pipeline 13, the medicament storage stirring tank is connected with the upper end of the medicament injection pipeline through a medicament injection pump, the medicament injection pipeline is arranged in the outer tube, a plurality of injection holes communicated with the medicament injection pipeline are arranged on the outer tube in an array mode, the outer tube is connected with the heating device, and when the injection heating rod is used, medicament heating and medicament injection are conducted simultaneously, and the repair effect is strengthened.
Wherein, the outer tube is heat conduction material.
An electric strengthening unit: the device comprises an electrode plate 3, a direct current weak power supply 4 and a plurality of leads, wherein the direct current weak power supply is connected with the electrode plate through the leads.
The electrode plates are of an assembled structure, can be spliced into different sizes and shapes according to the actual situation of a polluted site, and are provided with proper number of the electrode plates in the site. During restoration, an electric field is formed by implementing direct current weak current, so that migration of the agent in soil is enhanced, and restoration effect is improved.
An extraction unit: the device comprises an extraction well 5, an extraction pump 6 and a gas-liquid separation treatment device 7, wherein the gas-liquid separation treatment device is connected with an extraction pipeline through the extraction pump, and the extraction pipeline extends into the extraction well.
The gas-liquid separation treatment device comprises a water-gas separation device, a waste gas collection device and a waste liquid collection device.
During repair, water vapor in the extraction well is extracted through the extraction pump and the extraction pipeline, the extracted water vapor is firstly separated from the gas liquid through the water vapor separation device, and then the extracted water vapor enters the waste gas and waste liquid collection device respectively so as to be convenient for subsequent centralized disposal.
A monitoring unit: including monitoring well 8 and sampling monitoring device 9, sampling monitoring device acquires and detects the sample in the monitoring well for monitor repair effect.
An electric heating strengthening in-situ chemical oxidation restoration device for an organic polluted site comprises the following working steps:
(1) firstly, according to the range limit and the pollution condition of a polluted site, the ratio of medicaments and the number and arrangement of repair facilities are determined.
(2) When the remediation is started, firstly, uniformly stirring the oxidizing agents (such as persulfate and the like) in the agent storage stirring tank, pressurizing the oxidizing agents by an agent injection pump, and then conveying the oxidizing agents to the injection hole through the agent injection pipeline, so that the oxidizing agents are injected into the soil and react with organic pollutants in the soil; meanwhile, the heating device is started, the outer pipe heats the medicament in the medicament injection pipeline, and soil can be heated through heat conduction. On one hand, the utilization efficiency of the oxidant can be improved by heating, and the oxidant is activated by heat energy to generate free radicals with strong oxidizing property so as to oxidize and degrade organic pollutants in soil; on the other hand, the temperature rise of the soil increases the migration rate of molecules in a polluted site, and the contact of the medicament and organic pollutants is increased, so that the reaction is quicker.
(3) When the medicine is injected and heated, the electric strengthening unit is started, direct-current weak current is introduced into the field, the diffusion of the medicine in the soil is promoted by the action of the electric field, particularly, the diffusion of the medicine in a low-permeability soil region is realized, and the repair dead angle is reduced. Meanwhile, the current further catalyzes the oxidant to decompose the free radicals, so that the medicament utilization rate is obviously improved, and the cost waste is avoided.
(4) During repair, extraction is carried out in an extraction well through an extraction pump, gas and liquid are separated through a water-gas separation device after extraction, and waste gas and waste liquid respectively enter a collection device for subsequent centralized treatment; and the monitoring unit monitors the repairing effect in real time.
The electric heating strengthening in-situ chemical oxidation repair device for the organic polluted site has the beneficial effects that:
1. the invention couples the in-situ chemical oxidation technology with the electric repair technology, combines the heating function in the injection unit, and has the combined action of multiple repair technologies, thereby improving the utilization rate of the oxidant and the migration efficiency of the medicament and enhancing the overall repair effect.
2. The method has the advantages of simple equipment, short restoration period and wide application range, can realize restoration of low-permeability soil, effectively improves the medicament utilization rate and restoration effect and makes up for the defects in the conventional in-situ chemical oxidation technology compared with the conventional in-situ chemical oxidation technology.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (4)
1. An electric heating strengthening in-situ chemical oxidation repair device for an organic polluted site is characterized by comprising: an injection heating unit, an electric strengthening unit, an extraction unit and a monitoring unit, wherein the monitoring unit is respectively connected with the heating unit, the electric strengthening unit and the extraction unit for real-time monitoring and control,
an injection heating unit: comprises an injection heating rod and a heating medicine injection device connected with the injection heating rod, wherein the heating medicine injection device comprises a medicine storage stirring tank, a medicine injection pump and a heating device, the injection heating rod comprises an outer tube, an injection hole and a medicine injection pipeline,
the medicament storage stirring tank is connected with the upper end of the medicament injection pipeline through the medicament injection pump, the medicament injection pipeline is arranged in the outer pipe, a plurality of injection holes communicated with the medicament injection pipeline are arranged on the outer pipe in an array manner, the outer pipe is connected with the heating device,
an electric strengthening unit: comprises an electrode plate and a direct current weak power supply, wherein the direct current weak power supply is connected with the electrode plate through a lead,
an extraction unit: comprises an extraction well, an extraction pump and a gas-liquid separation treatment device, wherein the gas-liquid separation treatment device is connected with an extraction pipeline through the extraction pump, the extraction pipeline extends into the extraction well,
a monitoring unit: including monitoring well and be used for acquireing and detect the sample monitoring devices of monitoring well in the sample.
2. The device of claim 1, wherein the outer tube is made of a heat conducting material.
3. The device for repairing an organic polluted site by electrothermal strengthening in-situ chemical oxidation as claimed in claim 1, wherein the electrode plate has a built-up structure.
4. The device for repairing organic contaminated sites by electrothermal strengthening in-situ chemical oxidation as claimed in claim 1, wherein the gas-liquid separation treatment device comprises a water-gas separation device, an exhaust gas collection device and a waste liquid collection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011572338.6A CN112474768A (en) | 2020-12-28 | 2020-12-28 | Electric heating reinforced in-situ chemical oxidation repairing device for organic polluted site |
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| CN202011572338.6A CN112474768A (en) | 2020-12-28 | 2020-12-28 | Electric heating reinforced in-situ chemical oxidation repairing device for organic polluted site |
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| CN112474768A true CN112474768A (en) | 2021-03-12 |
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| CN202011572338.6A Pending CN112474768A (en) | 2020-12-28 | 2020-12-28 | Electric heating reinforced in-situ chemical oxidation repairing device for organic polluted site |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113828627A (en) * | 2021-10-18 | 2021-12-24 | 北京高能时代环境技术股份有限公司 | In-situ thermal desorption coupled chemical oxidation-reduction repair system |
| CN114082776A (en) * | 2021-10-14 | 2022-02-25 | 生态环境部南京环境科学研究所 | Electric diffusion-electric heating activation method for repairing organic contaminated soil |
| 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 |
| CN114289493A (en) * | 2021-12-31 | 2022-04-08 | 北京建工环境修复股份有限公司 | System and method for repairing polluted soil |
| CN114904905A (en) * | 2022-03-10 | 2022-08-16 | 同济大学 | Efficient electric coupling repair equipment for composite contaminated soil |
| CN114951251A (en) * | 2022-06-15 | 2022-08-30 | 生态环境部南京环境科学研究所 | Intelligent pesticide chemical field contaminated soil remediation device and remediation method |
| CN115228916A (en) * | 2022-07-27 | 2022-10-25 | 江苏维诗环境科技有限公司 | Integrated repair system for strengthening soil vapor extraction and groundwater remediation |
-
2020
- 2020-12-28 CN CN202011572338.6A patent/CN112474768A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114082776A (en) * | 2021-10-14 | 2022-02-25 | 生态环境部南京环境科学研究所 | Electric diffusion-electric heating activation method for repairing organic contaminated soil |
| CN113828627A (en) * | 2021-10-18 | 2021-12-24 | 北京高能时代环境技术股份有限公司 | In-situ thermal desorption coupled chemical oxidation-reduction repair system |
| CN113828627B (en) * | 2021-10-18 | 2023-01-10 | 北京高能时代环境技术股份有限公司 | In-situ thermal desorption coupled chemical oxidation-reduction repair system |
| CN114289493A (en) * | 2021-12-31 | 2022-04-08 | 北京建工环境修复股份有限公司 | System and method for repairing polluted soil |
| CN114289493B (en) * | 2021-12-31 | 2023-09-29 | 北京建工环境修复股份有限公司 | System and method for repairing polluted soil |
| 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 |
| CN114904905A (en) * | 2022-03-10 | 2022-08-16 | 同济大学 | Efficient electric coupling repair equipment for composite contaminated soil |
| CN114904905B (en) * | 2022-03-10 | 2024-03-22 | 同济大学 | Efficient electric coupling repair equipment for composite contaminated soil |
| CN114951251A (en) * | 2022-06-15 | 2022-08-30 | 生态环境部南京环境科学研究所 | Intelligent pesticide chemical field contaminated soil remediation device and remediation method |
| CN114951251B (en) * | 2022-06-15 | 2023-05-16 | 生态环境部南京环境科学研究所 | Intelligent contaminated soil restoration device and restoration method for pesticide-based industrial sites |
| CN115228916A (en) * | 2022-07-27 | 2022-10-25 | 江苏维诗环境科技有限公司 | Integrated repair system for strengthening soil vapor extraction and groundwater remediation |
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