CN109530413A - Soil restoring device and soil remediation method - Google Patents
Soil restoring device and soil remediation method Download PDFInfo
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- CN109530413A CN109530413A CN201811233834.1A CN201811233834A CN109530413A CN 109530413 A CN109530413 A CN 109530413A CN 201811233834 A CN201811233834 A CN 201811233834A CN 109530413 A CN109530413 A CN 109530413A
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- soil
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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
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- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of soil restoring device and soil remediation methods.The soil restoring device includes can place into the soil middle injector well, extractor and driving assembly, and injector well has air inlet and venthole；Extractor has air inlet and exhaust outlet, extractor can cover the surface for being located at soil and connect with the face seal of soil, cavity is collectively formed with the surface with soil, cavity is connected to air inlet and exhaust outlet, driving assembly can promote reparation gas to enter injector well from air inlet, successively enter cavity through venthole, soil and air inlet again, is discharged from exhaust outlet.Above-mentioned soil restoring device can be improved the remediation efficiency of soil.
Description
Technical field
The present invention relates to soil remediation fields, more particularly to a kind of soil restoring device and soil remediation method.
Background technique
With the prosperity and development of Chinese society economy, demand of the people to petroleum is increasing, to push petroleum
The development of exploitation cause.However not can avoid part crude oil in exploitation extractive process and directly or indirectly flow into soil, influence soil
The growth of microorganism in earth also influences the breathing of root system of plant and the absorption of moisture nutriment in soil, or even keeps root system of plant rotten
Rotten necrosis seriously endangers the growth of plant.In addition, the petroleum in soil is constantly diffused at it or depths with water in soil.
The main restorative procedure of gasoline contamination soil has microbial remediation method, phytoremediation, soilillatge, composting method etc. at present.
But these methods have the shortcomings that repair time is long, inefficient.
Summary of the invention
Based on this, it is necessary to provide a kind of soil restoring device that remediation efficiency is high.
In addition, also providing a kind of soil remediation method that remediation efficiency is high.
A kind of soil restoring device, comprising:
Injector well in capable of placing into the soil, the injector well have air inlet and venthole；
Extractor, have air inlet and exhaust outlet, the extractor can cover the surface for being located at the soil and with it is described
The face seal of soil connects, and is collectively formed cavity with the surface with the soil, the cavity and the air inlet and described
Exhaust outlet is connected to；
Driving assembly can promote to repair gas from the air inlet into the injector well, then successively through the outlet
Hole, the soil and the air inlet enter the cavity, are discharged from the exhaust outlet.
Cavity is collectively formed in the extractor of above-mentioned soil restoring device and the surface of soil, can effectively improve injector well note
The utilization rate of the reparation gas entered, to improve remediation efficiency.
The extractor includes umbrella ontology in one of the embodiments, the umbrella ontology can cover be located at it is described
It the surface of soil and is connect with the face seal of the soil, cavity, the umbrella is collectively formed with the surface with the soil
The opening of ontology is the air inlet, and the exhaust outlet is opened on the umbrella ontology.
The extractor further includes bottom cover in one of the embodiments, and the bottom cover lid is located on the air inlet, and
It is affixed with the umbrella ontology, the through-hole at multiple intervals is offered on the bottom cover, so that the reparation gas is through the soil
After can from the air inlet enter the cavity.
The injector well is hollow columnar in one of the embodiments, and one end of the injector well has opening, described
Opening is the air inlet, and the venthole is set on the borehole wall of the injector well.
The venthole is multiple in one of the embodiments, and multiple ventholes are arranged at intervals on the injection
On the borehole wall of well.
It in one of the embodiments, further include admission line and heater, the heater is arranged in the air inlet pipe
On road, the admission line is connected to the air inlet so that the reparation gas can after the heater by it is described into
Stomata enters the injector well.
It in one of the embodiments, further include admission line and drier, the drier is arranged in the air inlet pipe
On road, the admission line is connected to the air inlet so that the reparation gas can after the drier by it is described into
Stomata enters the injector well.
It in one of the embodiments, further include exhaust pipe and exhaust processor, the exhaust processor is set to institute
It states on exhaust pipe, the exhaust pipe is connected to the exhaust outlet, so that the reparation gas enters institute through the exhaust outlet
State exhaust processor.
A kind of soil remediation method, comprising the following steps:
During injector well is placed into the soil, the injector well has air inlet and venthole；
By the extractor with air inlet and exhaust outlet be covered on the surface of the soil and with the surface of the soil it is close
Envelope connection, is collectively formed cavity with the surface with the soil, the cavity is connected to the air inlet and the exhaust outlet；
Gas will be repaired and be passed through the injector well through the air inlet, then successively through the venthole, the soil and institute
Air inlet is stated into the cavity, is discharged from the exhaust outlet.
In one of the embodiments, it is described will repair gas the step of being passed through the injector well through the air inlet before
It is further comprising the steps of:
The reparation gas is dried；And/or
The reparation gas is heated.
Detailed description of the invention
Fig. 1 is the schematic diagram of the soil restoring device of an embodiment；
Fig. 2 is the extractor of embodiment shown in FIG. 1 and the structural schematic diagram of injector well；
Fig. 3 is the bottom view of Fig. 2；
The structural schematic diagram of the extractor of Fig. 4 embodiment 4.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give section Example of the invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the disclosure of invention more thorough and comprehensive.It needs
It is bright, when element is referred to as " being fixed on " another element, it can directly on the other element or there may also be
Element placed in the middle.When an element is considered as " connection " another element, it can be directly to another element or
Person may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
As shown in Figures 1 and 2, the soil restoring device 10 of an embodiment can be used in repairing by volatile pollution
Object institute contaminated soil, such as repairing by the soil of gasoline contamination, for repairing by the soil, etc. of oil pollution.Soil
Earth prosthetic device 10 includes injector well 110, extractor 120 and the driving assembly that can be placed in soil.
Injector well 110 has air inlet and venthole 112, and air inlet is connected to venthole 112, so that repairing gas can
Enter injector well 110 from air inlet, and is injected in soil through venthole 112.Specifically, injector well 110 is hollow structure.Into one
Step ground, injector well 110 are hollow columnar, and one end of injector well 110 has opening, this opening is air inlet.A reality wherein
Apply in example, venthole 112 be it is multiple, multiple ventholes 112 are distributed on the borehole wall of injector well 110.A reality wherein
It applies in example, injector well 110 is hollow columnar, and multiple ventholes 122 are in a row spaced apart along the extending direction of injector well 110.
In another embodiment, injector well 110 is hollow tube-shape, and multiple ventholes 112 are distributed in the borehole wall week of injector well 110
On face and end face.The aperture of venthole is 3cm~7cm in one of the embodiments,.Preferably 5cm.Multiple ventholes 112
The speed that gas is repaired in injection in venting process can not only be improved, provides possibility for the quick reparation under urgent pollution condition,
And it is capable of increasing the effective contact area for repairing gas and soil, unit time treating capacity is improved, is avoided because of part soil
The problems such as extraction effect is poor, smearing causes remediation efficiency low.
In the illustrated embodiment, injector well 110 is column, and venthole 112 is multiple, multiple intervals of ventholes 112
It is distributed on the borehole wall of injector well 110, the shape of venthole 112 is circle.It is understood that the shape of injector well 110 is not
It is limited to column, can also be the hollow structure with radian, for example, " Z " type hollow structure, " V " type hollow structure.Venthole
112 shape is not limited to circle, can also be rectangular, oval, triangle, star, polygon or other arbitrary shapes.
Please refer to figs. 2 and 3, and extractor 120 has air inlet 121 and exhaust outlet, and extractor 120 can cover and be located at soil
Surface and connect with the face seal of soil, cavity 130 is collectively formed with the surface with soil, cavity 130 and air inlet 121
It is connected to exhaust outlet.
Extractor 120 includes umbrella ontology 122 in one of the embodiments, and umbrella ontology 122 can cover and be located at soil
Surface and connect with the face seal of soil, cavity is collectively formed with the surface with soil, the opening of umbrella ontology 122 be into
Port 121, exhaust outlet are opened on umbrella ontology 122.Further, extractor 120 further includes bottom cover 124.The lid of bottom cover 124 is set
On air inlet 121, and it is affixed with umbrella ontology 122, the through-hole 125 at multiple intervals is offered on bottom cover 124, so as to repair gas
Body can enter cavity from air inlet 121 after soil.Multiple through-holes 125 can be such that pollutant is discharged with face, can not only mention
The high speed of exhaust, additionally it is possible to the uniformity of restoring area soil pumping is increased with the contact area of soil by increasing,
The problems such as reparation difference caused by traditional point extracting is big, reparation is not thorough is avoided, repairing effect is greatly promoted and repairs effect
Rate.Further, 125 aperture of through-hole is 2cm~4cm.Preferably 3cm.
In the illustrated embodiment, the shape of extractor 120 is umbrella, and through-hole 125 is multiple, and with injector well 110
For the center of circle, be intervally arranged three circles, and exhaust outlet is one.Certainly, in some other embodiment, the shape of extractor 120
It is not limited to umbrella, can also be cube, hemispherical, ellipsoid etc., as long as extractor 120 can be with the formation cavity of soil
130.The arrangement shape of through-hole 125 is not limited to circle, can be triangle, rectangle, polygon etc., the row of through-hole 125
Cloth circle number is not limited to three circles, one any circle number can be greater than with other, as long as the arrangement of through-hole 125 facilitates uniform stripping gas
Body.The number of exhaust outlet is also not necessarily limited to one, can also be multiple, at this time multiple exhaust outlet interval settings.
Extractor 120 has good air-tightness far from the side of soil in one of the embodiments, in order to repair
The cavity 130 that gas discharge extractor 120 and earth's surface are formed is able to reduce or prevent pollutant and causes two from soil surface evolution
Secondary pollution can also effectively improve the utilization rate of the reparation gas injected by injector well 110.
The lower section of extractor 120 is equipped with injector well 110.In the illustrated embodiment, extractor 120 is covered on soil
Surface, extractor 120 are arranged right below injector well 110, the angle substantially right angle that injector well 110 and ground are formed, air inlet
Hole is located at injector well 110 close to one end of extractor 120.Certainly in other embodiments, injector well 110 and ground are formed
Angle is not limited to right angle, can also be acute angle or obtuse angle.
Driving assembly can promote reparation gas to enter injector well 110 from air inlet, then successively through venthole 112, soil
And air inlet 121 enters cavity 130, is discharged from exhaust outlet.Driving assembly includes vacuum pump in one of the embodiments, is driven
Dynamic component can will repair gas from air inlet be pumped into injector well 110, then successively through venthole 112, soil and air inlet 121 into
Enter cavity 130, is extracted out from exhaust outlet.Driving assembly includes delivery pump in one of the embodiments, and driving assembly can promote
It repairs gas and inputs injector well 110 through air inlet, and enter cavity 130 through venthole 112, soil and air inlet 121, from exhaust
Mouth discharge.
Soil restoring device 10 further includes admission line 140, admission line 140 and air inlet in one of the embodiments,
Hole connection, so that injector well 110 can be entered by air inlet by repairing gas.
Further, soil restoring device 10 further includes drier 150, and drier 150 is arranged on admission line 140,
So that injector well 110 can be entered by air inlet after drier 150 by repairing gas.
In another embodiment, soil restoring device 10 further includes heater 160, and heater 160 is arranged in air inlet pipe
On road 140, so as to which injector well 110 can be entered by air inlet after repairing the heated device 160 of gas.
Soil restoring device 10 further includes drier 150 and heater 160, drier 150 in one of the embodiments,
It is arranged on admission line 140 with heater 160, in order to which the reparation gas after drying, heating inputs injector well 110.
Soil restoring device 10 further includes exhaust pipe 170 and exhaust processor 180 in one of the embodiments,.It is useless
Treatment apparatus 180 be arranged on exhaust pipe 170, exhaust pipe 170 is connected to exhaust outlet so that reparation gas through exhaust outlet into
Enter exhaust processor 180.
It is understood that the quantity of injector well 110, air inlet and exhaust outlet is not in some other embodiment
It is limited to one, can also be multiple.Multiple injector wells 110 are arranged at intervals at extractor 120 close to the side of air inlet 121, more
The setting of a injector well 110 is more conducive to the injection of gas and increases the contact area of gas and soil, improves remediation efficiency.It is multiple
Air inlet is arranged at intervals on injector well 110, convenient for being quickly passed through gas.Multiple exhaust outlet intervals are set on extractor, so as to
In Quick uniform gas bleeding.
Exhaust processor 180 contains activated carbon fibre in one of the embodiments, and activated carbon fibre has phosphorus content
Height, large specific surface area, micropore are abundant, pore-size distribution is narrow, and the features such as have a certain amount of surface functional group, can be to pollutant
Carry out prolonged efficient absorption.After reaching saturation, the activated carbon fibre that absorption is completed can use vapor fast desorption,
Activated carbon fibre after regeneration can utilize again, not will cause secondary pollution.Further, activated carbon fibre is that Jiangsu Soviet Union is logical
The organic solvent special activated carbon fiber felt (STF-1300T) of carbon fiber Co., Ltd production.
Above-mentioned soil restoring device 10 has at least the following advantages:
(1) extractor 120 is covered on extracting region, and is capable of forming cavity 130 with earth's surface, is able to reduce or prevent pollution
Object causes secondary pollution from soil surface evolution, and can effectively improve the utilization rate of the gas injected by injector well 110, from
And improve the efficiency of soil remediation.
(2) spaced multiple through-holes 125 on extractor 120, multiple through-holes 125 cooperate with cavity 130, can be realized
Face extracting, the point compared to traditional extractor 120 extract, and can not only improve the speed of exhaust, additionally it is possible to pass through increase and soil
Contact area to increase the uniformity of the pumping of the soil of restoring area, avoid reparation caused by traditional point extracting
Difference is big, repairs the problems such as being not thorough, and greatly improves repairing effect and remediation efficiency.
(3) heater 160 and drier 150 can heat gas, improve remediation efficiency.
(4) exhaust processor 180 is capable of handling tail gas, reduces secondary pollution of the tail gas to environment.
A kind of soil remediation method, comprising the following steps:
S110, it turns over.
The surface layer of plowed soils.For sticking grain with the deposition of water, will form one layer has certain thickness when soil surface is due to precipitation
Degree and very solid soil layer, structure is mostly sheet, big blocky or stratiform, and bulk density is big, and total porosity is small and mostly hollow billet hole
Gap causes soil aeration poor, and water penetration is bad.It the surface layer of plowed soils can be by the consolidation of the upper soll layer of contaminated area
Soil becomes loose sandy layer fine crushing, to increase soil porosity, the reparation gas for being conducive to injection is arranged from upper soll layer
Out, the diffusion and spilling for promoting volatile pollutant, substantially increase soil remediation effect and efficiency.
Specifically, it is combined and is turned over using varus method and the method one along the line of the other one so as to plough deeper of turning up.Further, first with varus method by polluting
The area middle line left side starts, and runs, is turned in the direction of the clock from centre to both sides, then leaves plough ridge in center, both sides leave
Ditch dug with a plow.Then it is run counterclockwise, ecto-entad is turned over to subtract using method one along the line of the other one so as to plough deeper of turning up by starting the year's ploughing on the right of contaminated area
Few furrow number.After the completion of turning over, smooth soil.Further, turning over tool is mouldboard plow.Ploughshare with jointer and rolling colter
Formula plough can keep the neat of ditch dug with a plow and cleaning while turning over, convenient for the placement of above-mentioned soil restoring device 10.Preferably,
The tool of turning over is disc plough, and it is strong that disc plough cuts off ability, and it is good to enter soil nature, is easy to de- soil and is not easy to plug, can preferably dredge
Loose topsoil increases soil porosity.
Further, the depth turned over is 10cm~50cm.Preferably, the depth turned over is 25cm~35cm.Turn over depth
Spend and shallowly will affect the actual effect turned over, and turn over it is too deep will lead to unpolluted clean soil and routed up, increase wait take out
The amount of mentioning.
It is understood that in some embodiments, turning over step can improve that topsoil is hardened, mentions with other
The method of the aeration of high topsoil substitutes, as long as can increase the aeration on the surface layer of soil.Certainly, in some realities
It applies in mode, turning over step can be omitted.
S120, injector well 110 is placed into the soil, injector well 110 has air inlet and venthole 112.By injector well 110
In placing into the soil, it can be mixed with soil in order to repair gas.
It S130, the surface that extractor 120 is covered on to soil and is connect with the face seal of soil, with the surface with soil
Cavity 130 is collectively formed.Extractor 120 has air inlet 121 and exhaust outlet.Air inlet 121 and exhaust outlet connect with cavity 130
It is logical.
Extractor 120 is located at the underface of injector well 110 in one of the embodiments,.
S140, it gas will be repaired through air inlet is passed through injector well 110, then successively through venthole 112, soil and air inlet
121 enter cavity 130, are discharged from exhaust outlet.
Further, drier 150 and heater 160 are sequentially arranged on admission line 140, and by admission line
140 are connected to close to one end of heater 160 with air inlet, so that being able to enter injector well through reparation gas that is dry and heating
110.The humidity of gas is repaired after drier 150 in one of the embodiments, between 3%~20%.By heating
After device 160, the temperature for repairing gas is 80 DEG C~150 DEG C.On the one hand, it can reduce to the dry gas of repairing of soil injection
The humidity of soil increases the channel of gas flowing between soil aperture, enables pollutant quickly by extracting to ground, improves
Repairing effect.On the other hand, while injecting the reparation gas of heat increases the soil moisture, also make the saturated vapor pressure of pollutant
It increases, and the saturated vapor pressure of pollutant is bigger, it is more volatile, be conducive to the reparation of soil.The heating of soil also promotes simultaneously
The desorption of ADSORPTION STATE organic matter in soil particle, accelerates the formation of organic vapo(u)r state, so with repair gas flowing and from
It opens soil also to accelerate, substantially increases remediation efficiency.
Certainly, in some other embodiment, can also first by repair gas promoting menstruation cross heater 160, then using
Drier 150.As long as the humidity for entering the reparation gas of injector well 110 is 3%~20%, temperature is 80 DEG C~150 DEG C.Into
One step, the humidity for entering the reparation gas of injector well 110 is between 5%~10%, and temperature is 100 DEG C~120 DEG C.
Quick lime built in drier 150 in one of the embodiments, quick lime can absorb moisture and heat release and be repaired with drying
Multiple gas.Reparation gas after drying is passed through heater 160 and is heated.It is heated to stopping heating at 80 DEG C~150 DEG C, then
It injects in injector well 110.Further, air hygrometer is installed at the gas outlet of drier 150, if after display is dry
Gas humidity is repaired between 3%~20%, is directly further processed；If the reparation gas humidity after dry is greater than
20%, then drier 150 is imported again and carries out redrying, until humidity is between 3%~20%.If humidity is less than
3%, then being mixed into a small amount of untreated reparation gas regulation humidity is 3%~20%.In another embodiment, drier
150 be freeze-dryer 150.Compression can be repaired the moisture of gas and be refrigerated to dew point hereinafter, being allowed to from repairing by freeze drier
It is precipitated in multiple gas to achieve the purpose that dry reparation gas, drying effect is more preferably.
Repairing gas in one of the embodiments, is air.Further, the humidity of air is 4%~15%, air
Temperature be 90 DEG C~130 DEG C.Further, the humidity of air is 5%~10%, and the temperature of air is 100 DEG C~120 DEG C.
Repairing gas in one of the embodiments, includes air and the substance for helping pollutant decomposition.Such as catalyst,
Powdered sodium carbonate etc..
The injection of gas is repaired in one of the embodiments, by the way of intermittent.It that is to say, injection a period of time
Reparation gas after, pause a period of time, be then passed through the reparation gas of a period of time again, then suspend a period of time, constantly follow
Ring.In some other embodiment, it is continuous to repair being injected to for gas.
The discharge of gas is repaired in one of the embodiments, by the way of intermittent.
Specifically, after the reparation gas that cavity 130 is entered through air inlet 121 being taken out a period of time, pause a period of time, so
It takes out a period of time again afterwards, then suspends a period of time, constantly recycle.In other embodiments, mixed gas is extracted out through extractor 120
Mode be also possible to continuously.
Start to extract after being passed through the reparation gas of V1 volume in one of the embodiments, continues to be passed through reparation at this time
Gas, after the completion of the reparation gas of 2 times of V1 volumes is all passed through, extracting is also simultaneously stopped, so far, one injection-extracting week
Phase completes.Later, this period is repeated several times to complete the reparation to soil.Extracting can make the reparation for first injecting soil when poor
Gas comes into full contact with soil particle at high pressure, accelerates the process of soil warming wet down, and then accelerates pollutant
The rate that air flows between volatilization and soil aperture, improves remediation efficiency.
Gas 5m is repaired in input in one of the embodiments,3After start to extract, work as 10m3Reparation gas fully enter
After the completion, extracting is also simultaneously stopped, and so far, one injection-extracting period completes.Later, this period is repeated several times to complete
Reparation to soil.
Further, the reparation gas being discharged from exhaust outlet is handled through exhaust processor 180, obtains meeting environmental emission
It is required that urosome.Every completion 100m in one of the embodiments,3~150m3Mixed gas sorption after, to exhaust-gas treatment fill
It sets and each leads into vapor and each 1h~2h of air, then proceed to absorption mixed gas.Certainly, using absorption method from mixed gas
If the organic matter type separated in is single, and purity is high can be recycled directly；If organic matter purity is not high, adopt
It is recycled after being purified with the way of distillation.
Above-mentioned soil compound method has at least the following advantages: turning over and increases soil aperture with the xeothermic injection for repairing gas
Degree also promotes the diffusion and spilling of gasoline, improves soil remediation effect and effect conducive to the steam flowing in the soil of injection
Rate.
Specific embodiment
It is described in detail below in conjunction with specific embodiment.The gasoline contamination soil of Examples 1 to 5 is the resettlement of certain gas station
Contaminated site afterwards, contaminated site area 1350m2, pollution depth 1.5m, major pollutants are methyl tertiary butyl ether(MTBE).
Embodiment 1
Embodiment 1 is repaired using the soil of soil restoring device as shown in Figure 1 to gasoline contamination, is repaired gas and is
Air.Before reparation, it is measured using content of the fluorescence spectrophotometry to gasoline in the soil of gasoline contamination.First to soil
Surface layer turned over, the depth turned over be 30 centimetres.After turning over, injector well vertically placed into the soil, air inlet and Horizon
The distance in face is 1.5m, extractor is covered on earth's surface, and be located at the surface of injector well, then by humidity 5%, temperature 110
DEG C heated dry air with 19m3·h-1Rate inject soil through injector well, promote the volatilization of gasoline and ADSORPTION STATE gasoline in soil
Desorption, formed mixed gas.Injection starts to be evacuated after heated dry air 15 minutes, speed of exhaust 38m3·h-1, pumpdown time
It is 15 minutes.Above-mentioned note, pumping process were repeated with 30 minutes for a complete cycle.Mixed gas after extractor is extracted out, into
Enter exhaust processor.Repair time one month.After reparation, using fluorescence spectrophotometry to gasoline in the soil after reparation
Content be measured.
The gasoline content difference that embodiment 1 repairs front and back is 1317.5mgkg-1。
Embodiment 2
The soil restoring device that embodiment 2 uses is identical as the soil restoring device of embodiment 1.What embodiment 2 used repairs
Compound method is substantially roughly the same with the restorative procedure for implementing 1, and difference is, before reparation, to gasoline contamination soil without appointing
Where reason.
The gasoline content difference that embodiment 2 repairs front and back is 1137.4mgkg-1。
Embodiment 3
The soil restoring device that embodiment 3 uses is identical as the soil restoring device of embodiment 1.What embodiment 3 used repairs
Compound method is substantially roughly the same with the restorative procedure for implementing 1, and difference is, reparation gas is the air without heating and dehumidification
(humidity 50%, temperature are 28 DEG C).
The gasoline content difference that embodiment 3 repairs front and back is 1105.7mgkg-1。
Embodiment 4
The soil restoring device that embodiment 4 uses is substantially identical with embodiment 1, and difference is, as shown in figure 4, real
The extractor 220 for applying example 4 is with tubular gas extractor, at this point, the surrounding of extraction well is arranged in tubular gas extractor.Implement
The restorative procedure that example 4 uses is identical as the restorative procedure for implementing 1.
The gasoline content difference that embodiment 4 repairs front and back is 1004.3mgkg-1。
Embodiment 5
The soil restoring device that embodiment 5 uses is identical as embodiment 4.The restorative procedure that embodiment 5 uses substantially with
The restorative procedure of implementation 4 is roughly the same, and difference is, the reparation gas used is that (humidity 50%, temperature are normal temperature air
28℃)。
The gasoline content difference that embodiment 5 repairs front and back is 875.4mgkg-1。
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of soil restoring device characterized by comprising
Injector well in capable of placing into the soil, the injector well have air inlet and venthole；
Extractor, have air inlet and exhaust outlet, the extractor can cover the surface for being located at the soil and with the soil
Face seal connection, cavity is collectively formed with the surface with the soil, the cavity and the air inlet and the exhaust
Mouth is connected to；
Driving assembly can promote to repair gas from the air inlet into the injector well, then successively through the venthole, institute
It states soil and the air inlet enters the cavity, be discharged from the exhaust outlet.
2. soil restoring device according to claim 1, which is characterized in that the extractor includes umbrella ontology, described
Umbrella ontology can cover the surface for being located at the soil and connect with the face seal of the soil, with the surface with the soil
Cavity is collectively formed, the opening of the umbrella ontology is the air inlet, and the exhaust outlet is opened on the umbrella ontology.
3. soil restoring device according to claim 2, which is characterized in that the extractor further includes bottom cover, the bottom
Lid lid is located on the air inlet, and affixed with the umbrella ontology, and the through-hole at multiple intervals is offered on the bottom cover, so that
The reparation gas can enter the cavity from the air inlet after the soil.
4. soil restoring device according to claim 1, which is characterized in that the injector well is hollow columnar, the note
The one end for penetrating well has opening, and the opening is the air inlet, and the venthole is set on the borehole wall of the injector well.
5. soil restoring device according to claim 1, which is characterized in that the venthole be it is multiple, it is multiple it is described go out
Stomata is arranged at intervals on the borehole wall of the injector well.
6. soil restoring device according to claim 1, which is characterized in that it further include admission line and heater, it is described
Heater is arranged on the admission line, and the admission line is connected to the air inlet, so that the reparation gas can
The injector well is entered by the air inlet after the heater.
7. soil restoring device according to claim 1, which is characterized in that it further include admission line and drier, it is described
Drier is arranged on the admission line, and the admission line is connected to the air inlet, so that the reparation gas can
The injector well is entered by the air inlet after the drier.
8. soil restoring device according to claim 1, which is characterized in that it further include exhaust pipe and exhaust processor,
The exhaust processor is set on the exhaust pipe, and the exhaust pipe is connected to the exhaust outlet, so that the reparation
Gas enters the exhaust processor through the exhaust outlet.
9. a kind of soil remediation method, which comprises the following steps:
During injector well is placed into the soil, the injector well has air inlet and venthole；
Extractor with air inlet and exhaust outlet is covered on the surface of the soil and is connected with the face seal of the soil
It connects, cavity is collectively formed with the surface with the soil, the cavity is connected to the air inlet and the exhaust outlet；
Gas will be repaired and through the air inlet be passed through the injector well, then successively through the venthole, the soil and it is described into
Port enters the cavity, is discharged from the exhaust outlet.
10. soil compound method according to claim 9, which is characterized in that the gas that will repair leads to through the air inlet
It is further comprising the steps of before the step of entering the injector well:
The reparation gas is dried；And/or
The reparation gas is heated.
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Application publication date: 20190329 |