CN110252794A - A kind of volatile contaminant soil remediation integration apparatus - Google Patents
A kind of volatile contaminant soil remediation integration apparatus Download PDFInfo
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- CN110252794A CN110252794A CN201910676413.4A CN201910676413A CN110252794A CN 110252794 A CN110252794 A CN 110252794A CN 201910676413 A CN201910676413 A CN 201910676413A CN 110252794 A CN110252794 A CN 110252794A
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- contaminated soil
- soil
- well
- air injector
- injector well
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
Abstract
The present invention relates to the improvement of soil and recovery technique field, and disclose a kind of volatile contaminant soil remediation integration apparatus, including contaminated soil, the center position of contaminated soil is equipped with air injector well, the inside of contaminated soil and it is located at air injector well and is surrounded by extraction well, the inside of contaminated soil and between air injector well and extraction well be equipped with heating tube, the inside of contaminated soil and be located at extraction well periphery be equipped with filling pipe.The volatile contaminant soil remediation integration apparatus, pass through the setting of filling pipe, bottom end inside contaminated soil forms a more wetland separate layer, cause the poisonous fume in contaminated soil that can only flow up, carry the problem of a small amount of noxious material is entered at the deeper of soil so as to avoid the air inputted in air injector well, so effectively raise the contaminated soil remediation equipment for noxious material removal rate.
Description
Technical field
The present invention relates to the improvement of soil and recovery technique field, specially a kind of volatile contaminant soil remediation one
Change equipment.
Background technique
With the quickening of process of industrialization, the usage amount of various industrial chemicals is also constantly increasing, because gasoline, diesel oil,
The random discharge of the volatile materials such as benzene, toluene, carbon tetrachloride leaks and pollutes soil with inevitable, and works as
Contain hazardous substance in soil excessive, more than soil self-purification capacity when, composition of the soil will be caused, structurally and functionally occurred
Variation, causes the activity of microorganism to be suppressed, harmful substance or its decomposition product gradually accumulate in the soil, and pass through biology
Amount is gradually to diffusions at different levels, the strong influence survival and development of various animals and plants.
Currently, be steam extraction recovery technique for what is mostly used in soil with volatile noxious material, it is main
It is the method using physics by reducing the vapour pressure in soil aperture, being converted into steam with volatile pollutant in soil
Form and the technology removed.
But existing steam extracts recovery technique process, in utilization air injector well to contaminated soil input air
When, a small amount of noxious material can be carried there are input air and enters in the soil of deeper and can not be removed, this is caused to set
Standby exhaust gas lower for the removal rate with volatile toxic substance and toxic easily oozes out earth's surface, although spreading on ground
Equipped with cover film, but it can have a large amount of gap between ground, and poisonous fume is caused not to be pulled out effectively, easily right
Soil or natural environment cause secondary pollution.
Summary of the invention
(1) the technical issues of solving
The present invention provides a kind of volatile contaminant soil remediation integration apparatus, have going for volatile toxic substance
Except rate is high, not will cause secondary pollution, the advantage that stability and reliability are preferable, the steam extraction recovery technique stream solved
Journey, using air injector well to contaminated soil input air when, there are input air can carry a small amount of noxious material into
Enter into the soil of deeper and can not be removed, causes the equipment lower for the removal rate with volatile toxic substance,
And toxic exhaust gas easily oozes out earth's surface, although being equipped with cover film on ground, it can have largely between ground
The problem of gap causes poisonous fume not to be pulled out effectively, easily causes secondary pollution to soil or natural environment.
(2) technical solution
The invention provides the following technical scheme: a kind of volatile contaminant soil remediation integration apparatus, including it is contaminated
Soil, the center position of the contaminated soil is equipped with air injector well, the inside and position of the contaminated soil
In the extraction well that is surrounded by of air injector well, the inside of the contaminated soil and be located at air injector well and extraction well it
Between be equipped with heating tube, the inside of the contaminated soil and the periphery for being located at extraction well are equipped with filling pipe, described contaminated
The surface of soil be equipped with adsorption layer, and be equipped with sealing cover film, the inside of the air injector well on the top of adsorption layer
It is connected to the inside for the gas transportation facilities for being located at sealing cover film top left hand, the inside of the extraction well is covered with sealing is located at
The inside of waste gas treatment mechanism on the right side of epiphragma top is connected to.
Preferably, the depth of the air injector well is identical as the depth of extraction well, and its be greater than heating tube depth and
Less than the depth of filling pipe.
Preferably, the top of the heating tube and the inside of steam heating mechanism form circulating-heating circuit system.
Preferably, the top of the filling pipe is connected to the inside of water pump, and is equipped with nozzle in the bottom end of filling pipe
To form a more wetland separate layer in the lower section of the inside of contaminated soil, air injector well.
Preferably, the capping range of the adsorption layer and sealing cover film is greater than the area on contaminated soil top, and
Made of adsorption layer is covered using cocoanut active charcoal.
Preferably, it is equipped with atomization tank between the gas transportation facilities and air injector well, and is filled in the inside of atomization tank
It is filled with the aqueous solution that activating agent is contained on surface.
Preferably, the inside of the waste gas treatment mechanism is equipped with gas-liquid separator, and distinguishes in the outlet of gas-liquid separator
It is connected with waste gas treatment equipment and sewage treatment equipment.
A kind of volatile contaminant soil remediation integration apparatus, including following operating process:
The depth of S1, the surface range that contaminated soil delimited first with detection device and pollution, in its center
Position opens up air injector well, and the depth of air injector well is greater than the depth of contaminated soil, and with air injector well is
The heart is equipped with several groups extraction well around it, while the radiation scope of air injector well and extraction well being made to be greater than contaminated soil
The range of earth；
S2, several groups heating tube is embedded in the range between air injector well and extraction well later, while in extraction well
Periphery be embedded with several groups filling pipe, and ensure filling pipe depth be greater than air injector well depth, then in quilt
The surface of contaminated soil is equipped with adsorption layer and sealing cover film, and the coverage area of adsorption layer and sealing cover film is greater than quilt
The area of contaminated soil, then air injector well, extraction well, heating tube and filling pipe are connected with corresponding equipment respectively
It is good；
S3, before starting gas transportation facilities and waste gas treatment mechanism, water is passed through filling pipe by starting water pump first
It is transported to the inside of contaminated soil, the more moist separate layer of the bottom end formation one inside contaminated soil, 12
After to 18 hours until more wetland layering is completely covered on the bottom end inside contaminated soil, start simultaneously
Vapor is formed by heating tube in the inside of contaminated soil and is circulated, so that heat be passed by steam heating mechanism
Being delivered in contaminated soil causes the temperature in contaminated soil to increase；
S4, then starting gas transportation facilities and by the aqueous solution containing activating agent in atomization tank, so that containing living
The air of property agent aqueous solution is compressed in the gap of contaminated soil by air injector well, while starting exhaust gas processor
Structure is pumped to the air in extraction well in waste gas treatment mechanism, so that the air-flow in air injector well can pass through
Gap in contaminated soil desorbs and carries volatile pollutant secretly, and is pumped to exhaust gas processor from extraction well
Purified treatment in structure is finally completed to by the repair of volatile substance pollution soil.
(3) beneficial effect
The present invention have it is following the utility model has the advantages that
1, volatile contaminant soil remediation integration apparatus, by the setting of filling pipe, in contaminated soil
Internal bottom end forms a more wetland separate layer, causes the poisonous fume in contaminated soil can only be to upstream
It is dynamic, a small amount of noxious material, which is carried, so as to avoid the air inputted in air injector well enters asking at the deeper of soil
Topic, while using the setting of heating tube, can the inside to contaminated soil carry out stablizing effective heat treatment so that its
In there is volatile noxious material can gradually overflow to earth's surface due to heated, will not flow downward because of the effect of air-flow,
And then effectively raise the contaminated soil remediation equipment for noxious material removal rate.
2, the volatile contaminant soil remediation integration apparatus, passes through setting for contaminated soil Adsorption on Surface layer
It sets, can effectively adsorb the poisonous fume oozed out from soil surface, be gone so as to avoid using soil steam soaking formulation
When except noxious material in soil, a small amount of poisonous fume remain between contaminated soil and sealing cover film and can not be by
The problem of extraction well extracts, and in turn results in secondary pollution, further improves the purification efficiency of the contaminated soil remediation equipment.
Detailed description of the invention
Fig. 1 is present system structural schematic diagram.
In figure: 1, contaminated soil；2, air injector well；3, extraction well；4, heating tube；5, filling pipe；6, it adsorbs
Layer；7, cover film is sealed；8, gas transportation facilities；9, waste gas treatment mechanism.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of volatile contaminant soil remediation integration apparatus, including contaminated soil 1, it is contaminated
Soil 1 center position be equipped with air injector well 2, the inside of contaminated soil 1 and be located at air injector well 2 surrounding
Heating tube 4 is equipped with equipped with extraction well 3, the inside of contaminated soil 1 and between air injector well 2 and extraction well 3, it is dirty
The inside of the soil 1 of dye and be located at extraction well 3 periphery be equipped with filling pipe 5, the surface of contaminated soil 1 is equipped with absorption
Layer 6, and on the top of adsorption layer 6 equipped with sealing cover film 7, the inside of air injector well 2 and positioned at sealing 7 top of a cover film left side
The inside of the gas transportation facilities of side is connected to, the inside of extraction well 3 and the exhaust gas processor being located on the right side of sealing 7 top of cover film
The inside of structure 9 is connected to.
In the technical program, the depth of air injector well 2 is identical as the depth of extraction well 3, and its depth for being greater than heating tube 4
Spend and be less than the depth of filling pipe 5.
In the technical program, the top of heating tube 4 and the inside of steam heating mechanism form circulating-heating circuit system.
Wherein, for the setting of heating tube 4, can the inside to contaminated soil 1 stablize at effective heating
Reason, after contaminated soil 1 is heated, wherein having volatile noxious material that can gradually overflow to earth's surface because heated
Out, or be coated on contaminated soil 1 adsorption layer 6 absorption fall, or because cover adsorption layer 6 volatilize it is toxic
Exhaust gas is pumped to centralized collection purified treatment in waste gas treatment mechanism 9 by extraction well 3.
In the technical program, the top of filling pipe 5 is connected to the inside of water pump, and is equipped in the bottom end of filling pipe 5
Nozzle is to form a more wetland separate layer in the lower section of the inside of contaminated soil 1, air injector well 2.
Wherein, the bottom end for filling pipe 5 and its inside contaminated soil 1 forms more wetland and separates
The setting of layer, so as to form one effective " ring of encirclement " to contaminated soil 1, so as to avoid air injector well 2
The air of middle input carries the problem of a small amount of noxious material is entered at the deeper of soil, and then effectively raises the dirt
Contaminate the purification efficiency of soil remediation equipment.
In the technical program, the capping range of adsorption layer 6 and sealing cover film 7 is greater than the face on 1 top of contaminated soil
Product, and made of adsorption layer 6 is covered using cocoanut active charcoal.
Wherein, for the setting of adsorption layer 6 and its coconut activated carbon structure, in using soil steam extraction removal soil
Volatile pollutant when, can effectively adsorb from soil surface ooze out poisonous fume, further improve the dirt
The purification efficiency of soil remediation equipment is contaminated, while coconut activated carbon structure is under normal circumstances, the process of absorption is irreversible
, and then not will cause so that leakage occurs for the poisonous fume of absorption and causes secondary pollution stable case, stability and reliability
Preferably.
In the technical program, atomization tank is equipped between gas transportation facilities and air injector well 2, and in the inside of atomization tank
It is filled with the aqueous solution that activating agent is contained on surface.
Wherein, for atomization tank in gas transportation facilities and air injector well 2 and its containing the setting of aqueous surfactant solutions,
Because surfactant can change the existing forms of heavy metal-polluted soil and the dissolubility of organic matter, keep heavy metal-polluted soil more
Dissolvable state is converted to, organic matter more switchs to water-soluble state, such as the hydrophilic radical in surfactant such as hydroxyl, carboxyl, phosphorus
Acid groups etc. contain oxygen atom, and complex and form micella, heavy metal are separated from soil, while table
Face activating agent facilitates desorption of the volatile organic contaminant from soil particle, and is dissolved in surfactant micellar and inhales
It is attached on monomer, to increase the distribution of organic matter in water, in addition, can to significantly change volatility organic for surfactant
The gas-liquid partition equilibrium of pollutant, hence it is evident that the Henry's constant for reducing these organic matters is desorbed organic matter from soil and enters water
In, significantly more efficient organic volatile pollutant can be extracted by soil steam and be removed.
In the technical program, the inside of waste gas treatment mechanism 9 is equipped with gas-liquid separator, and in the outlet of gas-liquid separator point
It is not connected with waste gas treatment equipment and sewage treatment equipment.
It wherein, can be effectively to the gas phase and liquid in exhaust gas for the setting of gas-liquid separator in waste gas treatment mechanism 9
It is mutually separated and is handled, the noxious material in exhaust gas is allowed to be efficiently separated out, to avoid having in exhaust gas
Noxious material is discharged into atmospheric environment the problem of causing secondary pollution.
A kind of volatile contaminant soil remediation integration apparatus, including following operating process:
The depth of S1, the surface range that contaminated soil delimited first with detection device and pollution, in its center
Position opens up air injector well 2, and the depth of air injector well 2 is greater than the depth of contaminated soil, and is with air injector well 2
Center is equipped with several groups extraction well 3 around it, while it is dirty that the radiation scope of air injector well 2 and extraction well 3 is greater than
Contaminate the range of soil；
S2, it is embedded with several groups heating tube 4 in the range between air injector well 2 and extraction well 3 later, while extracted
The periphery of well 3 is embedded with several groups filling pipe 5, and ensures that the depth of filling pipe 5 is greater than the depth of air injector well 2, so
It is equipped with adsorption layer 6 and sealing cover film 7 on the surface of contaminated soil 1 afterwards, and adsorption layer 6 and sealing cover film 7 cover
Lid range is greater than the area of contaminated soil 1, then air injector well 2, extraction well 3, heating tube 4 and filling pipe 5 are distinguished
It is connected with corresponding equipment and connects；
S3, before starting gas transportation facilities and waste gas treatment mechanism 9, water is passed through filling pipe by starting water pump first
5 are transported to the inside of contaminated soil 1, and the bottom end inside contaminated soil 1 forms a more moist separate layer,
After 12 to 18 hours until more wetland layering is completely covered on the bottom end inside contaminated soil 1, simultaneously
Start steam heating mechanism, vapor is formed by heating tube 4 in the inside of contaminated soil 1 and is circulated, thus will
Heat transfer causes the temperature in contaminated soil 1 to increase into contaminated soil 1；
S4, then starting gas transportation facilities and by the aqueous solution containing activating agent in atomization tank, so that containing living
Property agent aqueous solution air be compressed in the gap of contaminated soil 1 by air injector well 2, while starting exhaust-gas treatment
Mechanism 9 is pumped to the air in extraction well 3 in waste gas treatment mechanism 9, so that the air-flow in air injector well 2 can
To pass through the gap in contaminated soil 1, volatile pollutant is desorbed and carried secretly, and is pumped to from extraction well 3 useless
Purified treatment in gas disposal mechanism 9 is finally completed to by the repair of volatile substance pollution soil.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of volatile contaminant soil remediation integration apparatus, including contaminated soil (1), it is characterised in that: described
The center position of contaminated soil (1) is equipped with air injector well (2), the inside of the contaminated soil (1) and is located at
Air injector well (2) is surrounded by extraction well (3), the inside of the contaminated soil (1) and be located at air injector well (2)
It is set between extraction well (3) equipped with heating tube (4), the inside of the contaminated soil (1) and the periphery for being located at extraction well (3)
Have filling pipe (5), the surface of the contaminated soil (1) is equipped with adsorption layer (6), and is set on the top of adsorption layer (6)
Have sealing cover film (7), the inside of the air injector well (2) is conveyed with the gas for being located at sealing cover film (7) top left hand
The inside of equipment is connected to, the inside of the extraction well (3) and the waste gas treatment mechanism being located on the right side of sealing cover film (7) top
(9) inside connection.
2. a kind of volatile contaminant soil remediation integration apparatus according to claim 1, it is characterised in that: the sky
The depth of gas injector well (2) is identical as the depth of extraction well (3), and its be greater than heating tube (4) depth and be less than filling pipe
(5) depth.
3. a kind of volatile contaminant soil remediation integration apparatus according to claim 1, it is characterised in that: described to add
The top of heat pipe (4) and the inside of steam heating mechanism form circulating-heating circuit system.
4. a kind of volatile contaminant soil remediation integration apparatus according to claim 1, it is characterised in that: the note
The top of waterpipe (5) is connected to the inside of water pump, and is equipped with nozzle in contaminated soil in the bottom end of filling pipe (5)
(1) lower section of inside, air injector well (2) forms a more wetland separate layer.
5. a kind of volatile contaminant soil remediation integration apparatus according to claim 1, it is characterised in that: the suction
Attached layer (6) and the capping range for sealing cover film (7) are greater than the area on contaminated soil (1) top, and adsorption layer (6) uses
Be cocoanut active charcoal covering made of.
6. a kind of volatile contaminant soil remediation integration apparatus according to claim 1, it is characterised in that: the gas
It is equipped with atomization tank between body conveying equipment and air injector well (2), and is filled with surface in the inside of atomization tank and contains activating agent
Aqueous solution.
7. a kind of volatile contaminant soil remediation integration apparatus according to claim 1, it is characterised in that: described useless
The inside of gas disposal mechanism (9) be equipped with gas-liquid separator, and the outlet of gas-liquid separator respectively with waste gas treatment equipment and give up
Water treatment facilities are connected.
8. a kind of volatile contaminant soil remediation integration apparatus, including following operating process:
The depth of S1, the surface range that contaminated soil delimited first with detection device and pollution, in its center position
It opens up air injector well (2), and the depth of air injector well (2) is greater than the depth of contaminated soil, and with air injector well (2)
Centered on, several groups extraction well (3) are equipped with around it, while making the radiation scope of air injector well (2) Yu extraction well (3)
Greater than the range of contaminated soil；
S2, several groups heating tube (4) are embedded in the range between air injector well (2) and extraction well (3) later, while taken out
The periphery for mentioning well (3) is embedded with several groups filling pipe (5), and ensures that the depth of filling pipe (5) is greater than air injector well (2)
Depth, be then equipped with adsorption layer (6) and sealing cover film (7), and adsorption layer (6) on the surface of contaminated soil (1)
It is greater than the area of contaminated soil (1) with the coverage area of sealing cover film (7), then by air injector well (2), extraction well
(3), heating tube (4) and filling pipe (5) are connected with corresponding equipment respectively connects；
S3, before starting gas transportation facilities and waste gas treatment mechanism (9), water is passed through filling pipe by starting water pump first
(5) it is transported to the inside of contaminated soil (1), more moist in the internal bottom end formation one of contaminated soil (1)
Separate layer waits until that more wetland layering is completely covered on the internal bottom of contaminated soil (1) after 12 to 18 hours
When end, while starting steam heating mechanism, vapor is formed by heating tube (4) in the inside of contaminated soil (1) and is followed
Circulation is dynamic, so that transferring heat to causes the temperature in contaminated soil (1) to increase in contaminated soil (1)；
S4, then starting gas transportation facilities and by the aqueous solution containing activating agent in atomization tank, so that containing activating agent
The air of aqueous solution is compressed in the gap of contaminated soil (1) by air injector well (2), while starting exhaust-gas treatment
Mechanism (9) is pumped to the air in extraction well (3) in waste gas treatment mechanism (9), so that in air injector well (2)
Air-flow can pass through the gap in contaminated soil (1), desorb and carry secretly volatile pollutant, and from extraction well (3)
In be pumped to purified treatment in waste gas treatment mechanism (9), be finally completed to by the repair of volatile substance pollution soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910676413.4A CN110252794A (en) | 2019-07-25 | 2019-07-25 | A kind of volatile contaminant soil remediation integration apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910676413.4A CN110252794A (en) | 2019-07-25 | 2019-07-25 | A kind of volatile contaminant soil remediation integration apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857226A (en) * | 2020-06-30 | 2021-12-31 | 中国石油化工股份有限公司 | Soil remediation method for in-situ extraction after soil fracturing |
| CN114226424A (en) * | 2021-11-29 | 2022-03-25 | 辽宁中博生态环境技术有限公司 | Method for dredging and disposing volatile organic compound contaminated soil |
| CN114710987A (en) * | 2022-03-16 | 2022-07-08 | 温州科技职业学院 | Deep salinity contains remove device |
| CN116274329A (en) * | 2023-03-17 | 2023-06-23 | 江苏环保产业技术研究院股份公司 | Polluted soil isolation structure device capable of being automatically cleaned |
| AT526266A1 (en) * | 2022-07-07 | 2024-01-15 | Gm Remediation Systems Gmbh | Heating device for insertion into a well shaft for heating a soil layer contaminated with pollutants in order to clean this soil layer |
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| CN114226424A (en) * | 2021-11-29 | 2022-03-25 | 辽宁中博生态环境技术有限公司 | Method for dredging and disposing volatile organic compound contaminated soil |
| CN114710987A (en) * | 2022-03-16 | 2022-07-08 | 温州科技职业学院 | Deep salinity contains remove device |
| AT526266A1 (en) * | 2022-07-07 | 2024-01-15 | Gm Remediation Systems Gmbh | Heating device for insertion into a well shaft for heating a soil layer contaminated with pollutants in order to clean this soil layer |
| AT526266B1 (en) * | 2022-07-07 | 2024-03-15 | Gm Remediation Systems Gmbh | Heating device for insertion into a well shaft for heating a soil layer contaminated with pollutants in order to clean this soil layer |
| CN116274329A (en) * | 2023-03-17 | 2023-06-23 | 江苏环保产业技术研究院股份公司 | Polluted soil isolation structure device capable of being automatically cleaned |
| CN116274329B (en) * | 2023-03-17 | 2023-10-13 | 江苏环保产业技术研究院股份公司 | Polluted soil isolation structure device capable of being automatically cleaned |
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Application publication date: 20190920 |