CN114433612A - VOCs pollutes soil body reinforcing aeration prosthetic devices - Google Patents
VOCs pollutes soil body reinforcing aeration prosthetic devices Download PDFInfo
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- CN114433612A CN114433612A CN202210062997.8A CN202210062997A CN114433612A CN 114433612 A CN114433612 A CN 114433612A CN 202210062997 A CN202210062997 A CN 202210062997A CN 114433612 A CN114433612 A CN 114433612A
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- outer pipe
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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
- B09C1/005—Extraction of vapours or gases using vacuum or venting
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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
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to the field of remediation of organic pollutants in underground water and soil, in particular to an aeration device which can be used for conventional aeration, pressure gradient enhanced aeration for remediation of VOCs pollution and surfactant enhanced aeration for remediation of VOCs pollution. The aeration device comprises an inner pipe, an outer pipe, a spherical aeration head, two identical air bags and a motor, wherein the inner pipe and the outer pipe are coaxial, and the outer pipe is sleeved outside the inner pipe. The position of the outer pipe in the aeration well can be adjusted at will according to the position of the VOCs polluted area, so that the purpose of injecting the surfactant into the polluted soil body is achieved. The aeration ports uniformly distributed on the spherical aeration head can generate more seepage channels, and the back pressure is controlled by the back pressure valve, so that a larger gas pressure gradient is formed in the aeration process, and the seepage action is generated in the aerated gas soil; on the other hand, the mechanical action of the soil body is enhanced, more seepage channels are generated in the aeration process, more pollutants are volatilized, and the removal of the pollutants is promoted. The aeration device has important practical engineering significance for improving the aeration efficiency and strengthening the aeration repair effect.
Description
Technical Field
The invention relates to the field of remediation of organic pollutants in underground water and soil, in particular to an aeration device for remedying VOCs pollution through pressure gradient enhanced aeration and remedying VOCs pollution through surfactant enhanced aeration.
Background
Under the era background of high-speed development of science and technology, the qualitative leap is realized in the development of agriculture and industry in China. Meanwhile, the problem of soil pollution is also gradually a difficult problem in the times that people are puzzled for years. Among them, compared with heavy metal pollutants and radioactive pollutants, organic pollutants cause more serious pollution to soil and underground water, and are the main sources of the pollution to the soil and the underground water at present.
The aeration method technology has the advantages of simple operation, high efficiency, environmental friendliness and the like, is one of the most effective methods for repairing the underground water polluted by volatile organic compounds, and becomes one of the most effective methods for treating the VOCs pollution in the hypertonic soil body. In the aeration process, air is injected into the polluted area through the aeration well to generate a seepage channel, VOCs pollutants in water and soil are transported to the channel through dissolution and diffusion effects and then are volatilized to an unsaturated area, and then under the action of a soil gas phase extraction technology, polluted gas is pumped out of the ground and is treated on the ground, so that the aim of repairing is fulfilled. However, due to the complexity and heterogeneity of the in-situ stratum, the repairing effect of the aeration method is often poor, and the problem of VOCs pollution of the low-permeability soil body is increasingly serious. Therefore, in order to improve the aeration repair effect of the high-low permeability polluted soil body, the research of the novel reinforced aeration repair device has extremely important engineering and scientific significance.
For example, the Chinese patent application publication (CN112875881A) discloses an aeration device for repairing VOCs pollution, which comprises a top tube, a transfer tube, an inner tube, a hollow sleeve, a bottom tube, an air bag A, an air bag B and an air bag C. The arrangement position of the aeration device in the aeration well can be adjusted at will according to the position of the VOCs polluted area, and the change of aeration point positions is realized. However, the aeration device can only improve the aeration repair effect of the high-permeability polluted soil body to a certain extent, and cannot solve the problem of poor aeration repair effect of the low-permeability polluted soil body.
Therefore, in order to solve the problems, the invention provides the enhanced aeration remediation device for the soil body polluted by the VOCs.
Disclosure of Invention
The invention aims to solve the problems and invents an enhanced aeration remediation device for VOCs polluted soil and an operation method thereof.
The purpose of the invention can be realized by the following technical scheme. The invention provides a reinforced aeration repairing device for VOCs polluted soil, which comprises an inner pipe, an outer pipe, a spherical aeration head, two identical air bags and a motor, wherein the inner pipe and the outer pipe are coaxial, and the outer pipe is sleeved outside the inner pipe;
the inner pipe is a hollow round pipe with a closed top, the end surface of the top of the inner pipe is provided with a gas injection port, and the inner wall of the bottom of the inner pipe is provided with internal threads; vertically making the upper end surface of the inner tube vertically upward into LA1Distance sum is L from lower end face to upper end faceA2The distance part is marked as an area A, one air bag is embedded at the top of the area A, the other air bag is embedded at the bottom of the area A, and a plurality of air holes are uniformly distributed on the pipe wall of the inner pipe where the air bags are embedded and sleeved; recording the outer diameter of the inner tube as D1 and the length as L1;
the spherical aeration head is composed of a main body and a top which are integrated into a whole, the top is a hollow cylinder, the main body is a hollow sphere with one open end, and the open position of the main body is communicated with the top; the outer diameter of the top part is the same as the inner diameter of the inner pipe, the outer wall of the top part is provided with an external thread corresponding to the internal thread at the bottom of the inner pipe, namely, the spherical aeration head is connected with the inner pipe through the external thread, and the wall of the lower hemisphere of the main body is provided with aeration holes which are uniformly distributed;
the top and the bottom of the outer tube are closed, through holes with the diameter of D2 are respectively reserved on two end faces, D2 is D1+2 delta, delta is a gap, and the inner tube penetrates through the two through holes to be sleeved in the outer tube and can perform axial displacement; a plurality of air holes are uniformly distributed on the whole pipe wall of the outer pipe; n air outlets which are uniformly distributed are arranged on the top end surface of the outer pipe; the method comprises the following steps that M U-shaped pipes in the axial direction are uniformly welded on the inner wall of an outer pipe, the length of each U-shaped clamping pipe is the same as the height of the inner cavity of the outer pipe, the open ends of the U-shaped pipes are welded on the inner wall of the outer pipe in the axial direction, namely M cavities in the axial direction and formed by the inner wall of the outer pipe, the upper end surface and the lower end surface of the outer pipe and the inner wall of each U-shaped pipe are formed in the inner cavity of the outer pipe, and the cavities are marked as surfactant injection cavities; m surfactant injection ports communicated with the M surfactant injection cavities are formed in the positions, corresponding to the M surfactant injection cavities, on the top end face of the outer tube; the length of the outer tube is L2, and L2 is 0.4L1-0.6L 1;
two hooks are symmetrically arranged on the upper end surface of the outer pipe, and a motor is connected with the hooks through a steel wire rope to control the axial displacement of the inner pipe in the outer pipe;
when the device works, the reinforced aeration repairing device is arranged in an aeration well through the hoisting device, and the upper end surface of the inner pipe of the device is flush with the ground surface.
Preferably, the air bag is an annular high-pressure plugging air bag, the outer diameter of the air bag after being inflated is D1, the inner diameter of the outer tube is D3, and D1 is more than or equal to D3; said LA1＝L2，LA2＝1/4L2。
Preferably, the outer diameter of the main body part of the spherical aeration head is D4, the inner diameter of the outer pipe is D3, and D2 ≦ D4 < D3 is satisfied.
Preferably, the difference between the outer diameter of the outer pipe and the inner diameter of the aeration well is recorded as a gap h, wherein h is less than 1 cm.
Preferably, the aperture of the air hole is 1mm-3mm, and the aperture of the aeration hole is 6mm-10 mm.
Preferably, the gap δ is < 5 mm.
Compared with the prior art, the invention has the beneficial effects that:
1. the outer tube of the invention is provided with a surfactant injection cavity, and the surfactant enhanced aeration repair technology can be added on the basis of the traditional aeration technology.
2. The inner pipe and the outer pipe of the invention can freely adjust the position of the outer pipe in the aeration well according to the position of the VOCs polluted area, thereby realizing the change of the injection range of the surfactant.
3. The top of the outer pipe is provided with an air outlet, and the air outlet is connected with a back pressure valve, so that the back pressure in the aeration process can be adjusted, on one hand, a larger gas pressure gradient is generated in the aeration process, on the other hand, the mechanical action of a soil body is enhanced, and the aim of enhancing aeration repair is fulfilled.
Drawings
FIG. 1 is a schematic diagram of the general structure of an enhanced aeration remediation device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the distribution of the pores and aeration pores of the enhanced aeration remediation device according to an embodiment of the present invention;
FIG. 3 is a schematic view of an inner tube structure in an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of an outer tube in an embodiment of the present invention;
FIG. 5 is a top plan view of an outer tube in an embodiment of the present invention;
FIG. 6 is a schematic diagram of the aeration operation of the present invention at a real site.
In the figure: 1. a spherical aeration head; 2. an aeration hole; 3. a gas injection port; 4. an inner tube; 5. a motor; 6. a wire rope; 7. an outer tube; 8. a surfactant injection chamber; 9. an air bag; 10. hooking; 11. an air outlet; 12. a surfactant injection port; 13. a back pressure valve; 14. air holes; 15. a through hole; 16. a VOCs contaminated area; 17. a surfactant injection tube; 18. an aeration well; 19. a surfactant injection tank; 20. an air pump; 21. a gas flow meter; 22. a pressure regulating valve; 23. a switch; 24. a gas injection pipe; 25. an extraction pump; 26. and (4) extracting the well.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic view of the general structure of an enhanced aeration remediation device in an embodiment of the invention, fig. 2 is a schematic view of the distribution of air holes and aeration holes of the enhanced aeration remediation device in the embodiment of the invention, fig. 3 is a schematic view of the structure of an inner pipe in the embodiment of the invention, fig. 4 is a schematic view of the structure of an outer pipe in the embodiment of the invention, and fig. 5 is a top plan view of the outer pipe in the embodiment of the invention. As seen from the figures 1-5, the enhanced aeration repair device comprises an inner pipe 4, an outer pipe 7, a spherical aeration head 1, two identical air bags 9 and a motor 5, wherein the inner pipe 4 and the outer pipe 7 are coaxial, and the outer pipe 7 is sleeved outside the inner pipe 4.
The inner pipe 4 is a hollow round pipe with a closed top, the top end surface of the inner pipe 4 is provided with a gas injection port 3, and the inner wall of the bottom of the inner pipe 4 is provided with internal threads. The upper end surface of the inner tube 4 is vertically upwards L from the lower end surfaceA1Distance sum is L from lower end face to upper end faceA2The part between the distances is marked as an area A, one air bag 9 is embedded and sleeved at the top position of the area A, the other air bag 9 is embedded and sleeved at the bottom position of the area A, and a plurality of air holes 14 are uniformly distributed on the pipe wall of the inner pipe 4 where the air bags 9 are embedded and sleeved. Note that the inner tube 4 has an outer diameter D1 and a length L1.
The spherical aeration head 1 is composed of a main body and a top which are integrated into a whole, the top is a hollow cylinder, the main body is a hollow sphere with one open end, and the open position of the main body is communicated with the top. The outer diameter of the top part is the same as the inner diameter of the inner pipe 4, the outer wall of the top part is provided with an external thread corresponding to the internal thread at the bottom of the inner pipe 4, namely, the spherical aeration head 1 is connected with the inner pipe 4 through the external thread, and the wall of the lower hemisphere of the main body is provided with aeration holes 2 which are uniformly distributed.
The top and the bottom of the outer tube 7 are both closed, and through holes 15 with the diameter of D2 are respectively reserved on two end faces, D2 is D1+2 δ, wherein δ is a gap, and the inner tube 4 passes through the two through holes 15 and is sleeved in the outer tube 7 and can perform displacement in the axial direction. A plurality of air holes 14 are uniformly distributed on the whole tube wall of the outer tube 7, and N air outlets 11 are uniformly distributed on the top end surface of the outer tube 7. M U-shaped pipes along the axial direction are uniformly welded on the inner wall of the outer pipe 7, the length of each U-shaped clamping pipe is the same as the height of the inner cavity of the outer pipe 7, the open ends of the U-shaped pipes are welded on the inner wall of the outer pipe 7 along the axial direction, namely M cavities along the axial direction and consisting of the inner wall of the outer pipe 7, the upper end surface and the lower end surface of the outer pipe 7 and the inner wall of each U-shaped pipe are formed in the inner cavity of the outer pipe 7, and the cavities are marked as surfactant injection cavities 8. M surfactant injection ports 12 penetrating the M surfactant injection cavities 8 are provided on the top end surface of the outer tube 7 at positions corresponding to the M surfactant injection cavities 8. Note that the length of the outer tube 7 is L2, and L2 is 0.4L1-0.6L 1.
In the present embodiment, L2 is 0.5L 1. The gap delta < 5mm ensures that the inner tube 4 can be displaced axially in the outer tube 7. N is 4, M is 4, that is, 4 evenly distributed air outlets 11 are arranged on the upper end surface of the outer tube 7, 4 surfactant injection cavities 8 are arranged in the inner cavity of the outer tube 7, and 4 surfactant injection ports 12 communicated with the surfactant injection cavities 8 are arranged on the upper end surface of the outer tube 7.
Two hooks 10 are symmetrically arranged on the upper end face of the outer pipe 7, and the motor 5 is connected with the hooks 10 through a steel wire rope 6 to control the axial displacement of the inner pipe 4 in the outer pipe 7.
When in work, the reinforced aeration repairing device is arranged in the aeration well 18 through the hoisting device, and the upper end surface of the inner pipe 4 is flush with the ground surface.
In the embodiment, the air bag 9 is an annular high-pressure plugging air bag, the outer diameter of the air bag 9 after being inflated is D1, the inner diameter of the outer tube 7 is D3, and D1 is more than or equal to D3. Said LA1＝L2，LA2＝1/4L2。
In this embodiment, let the outer diameter of the main body of the spherical aerator 1 be D4, the inner diameter of the outer tube 7 be D3, and satisfy D2 ≤ D4 < D3.
In this embodiment, the difference between the outer diameter of the outer tube 7 and the inner diameter of the aeration well 18 is defined as a gap h, wherein h is less than 1 cm.
In this embodiment, the aperture of the air hole 14 is 1mm-3mm, and the aperture of the aeration hole 2 is 6mm-10 mm.
FIG. 6 is a schematic view of the aeration operation of the enhanced aeration remediation device of the present invention at a real site. As can be seen from FIG. 6, the enhanced aeration repair device of the present invention requires a matching auxiliary device during the working process. Specifically, the device comprises the following three groups of auxiliary devices:
the first group includes an air pump 20, a gas flow meter 21, a regulating valve 22, a switch 23, and an air injection pipe 24. When the gas injection device works, one end of the gas injection pipe 24 is communicated with the gas injection port 3, and the other end is connected with the gas pump 20 through the switch 23, the pressure regulating valve 22 and the gas flowmeter 21 in sequence.
The second group includes a surfactant injection pipe 17 and a surfactant injection tank 19. In operation, the surfactant injection tank 19 is in communication with the surfactant injection port 12 via the surfactant injection tube 17.
The third group is a backpressure valve 13 which is communicated with an air outlet on the outer pipe 7 through a section of pipeline and is used for adjusting the backpressure in the aeration process.
In addition, as can be seen from fig. 6, the enhanced aeration remediation device is also matched with a plurality of extraction wells 26 during operation, the extraction wells 26 are located in an unsaturated zone and are 2m deep, and the extraction wells 26 are communicated with an extraction pump 25 through pipelines.
The operation of the enhanced aeration repair device of the invention is as follows:
step one, finding out the location and distribution of the contaminated area 16 of VOCs
Specifically, in the present embodiment, the VOCs contaminated areas 16 are distributed in a saturated soil body with a depth of 3.5 to 4 meters underground, and the thickness is about 0.5 m.
Step two, the establishment of the aeration well 18 and the extraction well 26
Specifically, in the present embodiment, the aeration well 18 is 4m deep and has a radius of 25cm, and the extraction well 26 is located in the unsaturated zone and is 2m deep.
Step three, enhancing the installation of the aeration repairing device
The reinforced aeration repairing device is installed in the aeration well 18 by using a hoisting device, and the position of the outer pipe 7 is adjusted up and down by using the motor 5 according to the depth of the VOCs polluted area 16, so that the outer pipe 7 is arranged in the VOCs polluted area 16.
Step four, connection of auxiliary devices
The auxiliary device is connected with the enhanced aeration repair device.
In this embodiment, the gas injection pipe 24 and the gas injection port 3 are screwed, the surfactant injection pipe 17 and the surfactant injection port 12 are screwed, the gas outlet 11 and the pipeline connected thereto are also screwed, and both are provided with a seal ring at the joint.
Step five, injecting a surfactant
The surfactant is injected into the polluted soil body at the periphery through the surfactant injection pipe 8, so that the surfactant is fully contacted with the polluted soil body.
Step six, aeration is started
Opening the switch of the air pump 20, and adjusting the pressure regulating valve 22 to a preset aeration pressure P1; adjusting the backpressure valve 13 to a predetermined pressure value P2;
the switch 23 and the power supply of the extraction pump 25 are turned on, the air pumped by the air pump 20 enters the spherical aeration head 1 through the inner tube 4, the air bags 9 are gradually expanded, and the two expanded air bags 9 are tightly attached to the inner wall of the outer tube 7, so that the outer tube 7 is better fixed in the VOCs pollution area 16. The gas is released from the lower half part of the spherical aeration head 1 through the uniformly distributed aeration holes 2, and forms a seepage channel in the VOCs pollution area 16. VOCs enter the seepage channel through diffusion, a part of VOCs volatilizes to the ground surface through the air holes 14 uniformly distributed on the wall of the outer pipe 7 for treatment, a part of VOCs volatilizes to the unsaturated zone, and finally the VOCs are pumped out of the ground surface by the extraction well 26 for treatment, so that the VOCs in the soil are removed.
By the aeration device and the aeration method, the aeration working efficiency and the removal rate of VOCs can be greatly improved on the basis of the traditional aeration work.
Claims (6)
1. The enhanced aeration remediation device for the VOCs polluted soil is characterized by comprising an inner pipe (4), an outer pipe (7), a spherical aeration head (1), two identical air bags (9) and a motor (5), wherein the inner pipe (4) and the outer pipe (7) are coaxial, and the outer pipe (7) is sleeved outside the inner pipe (4);
the inner pipe (4) is a hollow round pipe with a closed top, the end surface of the top of the inner pipe (4) is provided with a gas injection port (3), and the inner wall of the bottom of the inner pipe (4) is provided with internal threads; the upper end surface of the inner pipe (4) is vertically upwards L from the lower end surfaceA1Distance sum is L from lower end face to upper end faceA2The distance between the air bags is marked as an area A, one air bag (9) is embedded and sleeved at the top position of the area A, the other air bag (9) is embedded and sleeved at the bottom position of the area A, and a plurality of air holes (14) are uniformly distributed on the pipe wall of the inner pipe (4) where the air bag (9) is embedded and sleeved; recording the outer diameter of the inner tube (4) as D1 and the length as L1;
the spherical aeration head (1) is composed of a main body and a top which are integrated into a whole, the top is a hollow cylinder, the main body is a hollow sphere with one open end, and the open position of the main body is communicated with the top; the outer diameter of the top part is the same as the inner diameter of the inner pipe (4), the outer wall of the top part is provided with an external thread corresponding to the internal thread at the bottom of the inner pipe (4), namely, the spherical aeration head (1) is connected with the inner pipe (4) through the external thread, and the wall of the lower hemisphere of the main body is provided with aeration holes (2) which are uniformly distributed;
the top and the bottom of the outer tube (7) are closed, through holes (15) with the diameter of D2 are reserved on two end faces respectively, D2 is D1+2 delta, delta is a gap, and the inner tube (4) penetrates through the two through holes (15) and is sleeved in the outer tube (7) and can be displaced in the axial direction; a plurality of air holes (14) are uniformly distributed on the whole pipe wall of the outer pipe (7); n air outlets (11) which are uniformly distributed are arranged on the top end surface of the outer pipe (7); m U-shaped pipes along the axial direction are uniformly welded on the inner wall of the outer pipe (7), the length of each U-shaped clamping pipe is the same as the height of the inner cavity of the outer pipe (7), the open ends of the U-shaped pipes are welded on the inner wall of the outer pipe (7) along the axial direction, namely M cavities along the axial direction and consisting of the inner wall of the outer pipe (7), the upper end surface and the lower end surface of the outer pipe (7) and the inner wall of each U-shaped pipe are formed in the inner cavity of the outer pipe (7), and the cavities are marked as surfactant injection cavities (8); m surfactant injection ports (12) which are communicated with the M surfactant injection cavities (8) are arranged on the top end surface of the outer tube (7) and correspond to the M surfactant injection cavities (8); the length of the outer tube (7) is L2, and L2 is 0.4L1-0.6L 1;
two hooks (10) are symmetrically arranged on the upper end surface of the outer pipe (7), and the motor (5) is connected with the hooks (10) through a steel wire rope (6) to control the axial displacement of the inner pipe (4) in the outer pipe (7);
when the device works, the enhanced aeration repairing device is arranged in an aeration well (18) through a hoisting device, and the upper end surface of the inner pipe (4) is flush with the ground surface.
2. The enhanced aeration remediation device for VOCs contaminated soil according to claim 1, wherein the air bag (9) is an annular high-pressure plugging air bag, the outer diameter of the air bag (9) after being inflated is D1, the inner diameter of the outer pipe (7) is D3, and D1 is greater than or equal to D3; said LA1＝L2，LA2＝1/4L2。
3. An enhanced aeration remediation device for VOCs contaminated soil according to claim 1, wherein the outer diameter of the main body of the spherical aeration head (1) is D4, the inner diameter of the outer pipe (7) is D3, and D2 is not less than D4 and not more than D3.
4. An enhanced aeration remediation device for VOCs contaminated soil according to claim 1 characterised in that the difference between the outer diameter of the outer pipe (7) and the inner diameter of the aeration well (18) is taken as the clearance h, h < 1 cm.
5. An enhanced aeration remediation device for VOCs contaminated soil according to claim 1, wherein the pore size of the air holes (14) is 1mm to 3mm, and the pore size of the aeration holes (2) is 6mm to 10 mm.
6. An enhanced aeration remediation device for contaminated soil bodies with VOCs according to claim 1 wherein said gap δ is < 5 mm.
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| CN202210062997.8A CN114433612B (en) | 2022-01-19 | 2022-01-19 | VOCs pollutes soil body reinforcing aeration prosthetic devices |
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| CN202210062997.8A CN114433612B (en) | 2022-01-19 | 2022-01-19 | VOCs pollutes soil body reinforcing aeration prosthetic devices |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193898A (en) * | 2022-06-22 | 2022-10-18 | 江苏大地益源环境修复有限公司 | Underground water in-situ reagent packing and injecting device and underground water repairing method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0880484A (en) * | 1994-09-12 | 1996-03-26 | Canon Inc | Method for purifying contaminated soil and contaminated ground water |
| JP2004283709A (en) * | 2003-03-20 | 2004-10-14 | Takeshi Hasegawa | Soil pollution countermeasure method and soil pollution countermeasure system |
| KR20100002359A (en) * | 2008-06-30 | 2010-01-07 | 한림대학교 산학협력단 | Method for selectively removing organic pollutant from aquifer |
| CN202766353U (en) * | 2012-09-14 | 2013-03-06 | 上海宝钢气体有限公司 | Aerating device |
| CN109127689A (en) * | 2018-08-28 | 2019-01-04 | 山东碧泉环境工程技术有限公司 | A kind of organic contamination place in-situ oxidation combines repair system with circulation well |
| CN111589854A (en) * | 2019-02-20 | 2020-08-28 | 中国石油天然气股份有限公司 | Be used for prosthetic binary channels layering injection device of contaminated site normal position |
| CN112875881A (en) * | 2021-01-25 | 2021-06-01 | 合肥工业大学 | Aeration device for repairing VOCs pollution |
| CN113426815A (en) * | 2021-07-08 | 2021-09-24 | 合肥工业大学 | Method for restoring VOCs pollution of low-permeability soil body by in-situ enhanced aeration |
-
2022
- 2022-01-19 CN CN202210062997.8A patent/CN114433612B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0880484A (en) * | 1994-09-12 | 1996-03-26 | Canon Inc | Method for purifying contaminated soil and contaminated ground water |
| JP2004283709A (en) * | 2003-03-20 | 2004-10-14 | Takeshi Hasegawa | Soil pollution countermeasure method and soil pollution countermeasure system |
| KR20100002359A (en) * | 2008-06-30 | 2010-01-07 | 한림대학교 산학협력단 | Method for selectively removing organic pollutant from aquifer |
| CN202766353U (en) * | 2012-09-14 | 2013-03-06 | 上海宝钢气体有限公司 | Aerating device |
| CN109127689A (en) * | 2018-08-28 | 2019-01-04 | 山东碧泉环境工程技术有限公司 | A kind of organic contamination place in-situ oxidation combines repair system with circulation well |
| CN111589854A (en) * | 2019-02-20 | 2020-08-28 | 中国石油天然气股份有限公司 | Be used for prosthetic binary channels layering injection device of contaminated site normal position |
| CN112875881A (en) * | 2021-01-25 | 2021-06-01 | 合肥工业大学 | Aeration device for repairing VOCs pollution |
| CN113426815A (en) * | 2021-07-08 | 2021-09-24 | 合肥工业大学 | Method for restoring VOCs pollution of low-permeability soil body by in-situ enhanced aeration |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193898A (en) * | 2022-06-22 | 2022-10-18 | 江苏大地益源环境修复有限公司 | Underground water in-situ reagent packing and injecting device and underground water repairing method |
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