CN105234163B - Soil vapor extraction technical modelling device - Google Patents
Soil vapor extraction technical modelling device Download PDFInfo
- Publication number
- CN105234163B CN105234163B CN201510570185.4A CN201510570185A CN105234163B CN 105234163 B CN105234163 B CN 105234163B CN 201510570185 A CN201510570185 A CN 201510570185A CN 105234163 B CN105234163 B CN 105234163B
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- China
- Prior art keywords
- sandbox
- soil
- microbial inoculum
- immobilized microbial
- vapor extraction
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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
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mycology (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Botany (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Processing Of Solid Wastes (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A kind of soil vapor extraction technical modelling device, including stereotest sandbox, the gas phase extraction device being connected with sandbox and charcoal immobilized microbial inoculum adding set, the gas phase extraction device includes jet pump, flowmeter, gasser, extraction well, active carbon filter and vavuum pump, and the charcoal immobilized microbial inoculum adding set includes vasopressing injection pump and injector well.Present invention also offers a kind of charcoal immobilized microbial inoculum adding set and a kind of case lid of stereotest sandbox.The device of the present invention can carry out the soil vapor extraction experiment under the conditions of homogenously or inhomogenously soil layer, and charcoal immobilized microbial inoculum Degrading experiment and charcoal immobilized microbial inoculum strengthen the simulated test of gas phase extracting；Parameters can be monitored in real time during experiment, it is main to include aeration flow, extracting flow and vacuum etc.；Simultaneously, moreover it is possible to experiment different phase to soil layer at diverse location soil sample or gaseous sample carry out sampled measurements, it is determined that the charcoal immobilized microbial inoculum reinforced soil gas phase extraction technique repairing effect for contaminated site.
Description
Technical field
The present invention relates to soil treatment technical field, relates more specifically to a kind of soil vapor extraction experimental provision, especially
It is the analogue means that a kind of soil vapor extraction technology removes research for VOCs.
Background technology
Soil vapor extraction technology is a kind of soil restoring technology for volatile organic matter, and its is simple to operate, cost
Expense is low and does not destroy soil texture.But soil vapor extraction technology has some shortcomings, there is hangover phase, initial stage in its application
Half volatile pollutants concentration of being volatilized in soil declines rapidly, and over time, remaining pollutant is in soil not with leading to
The gas entered directly contacts, but is slowly diffused into soil duct by moisture film, and then is gone with air-flow discharge system, volatilization
The contribution of depollution thing gradually weakens, and pollutant in soil concentration no longer declines substantially, and ventilation, which is repaired, enters the hangover later stage.
There is scholar to propose soil vapor extraction technology being combined with Black Liquor with Efficient Bacteria degradation, the results showed that the addition of microbial inoculum
Removal for remaining VOCs in soil is largely effective, but current simulating lab test rests on small-sized earth pillar research rank more
How section, add efficient degrading bacteria and effectively verify that its effect is the difficult point of such experiment.
The content of the invention
Based on above-mentioned technical problem, it is an object of the present invention to provide a kind of addition of charcoal immobilized microbial inoculum to fill
Put, it is of the invention further an object is that carrying it is yet a further object of the present invention to provide a kind of case lid of stereotest sandbox
For a kind of soil vapor extraction technical modelling device.
To achieve these goals, as one aspect of the present invention, the invention provides a kind of charcoal immobilized bacterium
Agent adding set, including the vasopressing injection pump and injector well being connected in series, wherein being fixed at the top of the injector well provided with charcoal
Change microbial inoculum added holes, the injection bottom is connected with screw type bit, and the diameter of the screw type bit is more than the injection
The diameter of well, and have several equally distributed injection orifices above the screw type bit.
As another aspect of the present invention, present invention also offers a kind of case lid of stereotest sandbox, the case lid
Middle part is extracting wellhole, and several gas sampling holes are distributed with the extracting wellhole surrounding, wherein several described gas samplings
The arrangement in hole is in crossing distribution centered on the extracting wellhole.
As another aspect of the invention, present invention also offers a kind of soil vapor extraction technical modelling device, bag
Stereotest sandbox, the gas phase extraction device and sampling apparatus connected with the stereotest sandbox are included, wherein the three-dimensional examination
Testing sandbox includes sandbox main body, pollutant adding set and pipeline, is arranged on the soil sampling hole of the sandbox body side, sets
The case lid in the sandbox body top is put, the set location of the pollutant adding set and pipeline is used according to being actually needed
In experiment is added into the sandbox body interior with pollutant.
The present invention compared with prior art, has advantages below：
(1) analogue means of the invention can by the various combination mode to loading soil sample, simulate homogeneous soil and it is non-
Situations such as matter soil layer, the charcoal immobilized microbial inoculum reinforcing gas phase extracting skill under the conditions of various complex random systems is carried out on this basis
Art simulated test；
(2) analogue means of the invention can carry out soil vapor extraction experiment respectively, and the addition of charcoal immobilized microbial inoculum is real
Test or two experiments are combined and carried out；
(3) analogue means of the invention is provided with charcoal immobilized microbial inoculum adding set, spiral using bottom is injected
Drill bit can be rotated into pollution soil layer.By the injection orifice on drill bit top, using vasopressing injection pump with the side of high-pressure injection
Liquid bio charcoal immobilized microbial inoculum is expelled to polluted soil interface by formula, so as to solve soil vapor extraction technology and efficiently drop
The problem that solution bacterium is combined.
Brief description of the drawings
Fig. 1 is the soil vapor extraction technical modelling device of the present invention；
Fig. 2 is the design diagram of three-dimensional sandbox lid；
Fig. 3 is the design diagram of the charcoal immobilized microbial inoculum adding set of the present invention；
Fig. 4 is the design diagram of the bit part of the present invention.
The description of reference numerals of primary clustering is as follows in accompanying drawing：
1st, jet pump；2nd, connecting pipe；3rd, flowmeter；4th, sandbox；5th, pollutant adding set and pipeline；6th, gasser；
7th, vasopressing injection pump；8th, extraction well；9th, pipeline；10th, active carbon filter；11st, vavuum pump；12nd, soil sampling hole；13rd, inject
Well；14th, sandbox lid；15th, gas sampling hole；16th, wellhole is extracted；17th, injection orifice；18th, screw type bit；19th, charcoal is solid
Surely microbial inoculum added holes is changed；20th, injection orifice protective cover；21st, scalable interface.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in further detail.
The invention discloses a kind of soil vapor extraction technical modelling device, it is to the gaseous phase of soil in existing laboratory
Extraction device carries out a certain degree of dilatation, as far as possible real simulation actual place, during avoiding small-sized soil column leaching
Wall effect, while immobilized microbial inoculum adding set is attached to SVE simulated experiments.When SVE experiments enter the hangover stage
Afterwards, by effective degradation bacterial agent by immobilized microbial inoculum adding set injection experimentses soil, so as to rational judgment immobilized microbial inoculum
To the removal effect for the stage VOCs that trails, and verify the validity of microbial inoculum injection device.
More specifically, the soil vapor extraction technical modelling device of the present invention, by soil vapor extraction technology and Black Liquor with Efficient Bacteria
Degradation combine simulation repair process, Black Liquor with Efficient Bacteria and charcoal are combined to form into liquid biological charcoal immobilized microbial inoculum,
Using charcoal immobilized microbial inoculum adding set high-pressure injection into soil vapor extraction reparation hangover stage contaminated soil,
So as to which rational judgment immobilized microbial inoculum is to the removal effect for the stage VOCs that trails.
The soil vapor extraction technical modelling device of the present invention, including stereotest sandbox, the gas phase connected with sandbox are taken out
Carry device and sampling apparatus.Stereotest sandbox includes sandbox, pollutant adding set and pipeline, the soil for being arranged on sandbox side
Earth thieff hatch, the sandbox lid being arranged at the top of sandbox and the gas sampling hole being arranged on above sandbox lid and extracting wellhole.
Gas phase extraction device includes jet pump, connecting pipe, flowmeter, gasser, extraction well, active carbon filter and true
Empty pump.Each device is sequentially connected on demand.
In addition, the soil vapor extraction technical modelling device of the present invention can also include charcoal immobilized microbial inoculum addition dress
Put, the charcoal immobilized microbial inoculum adding set includes vasopressing injection pump, injector well.Vasopressing injection pump is connected with injector well,
Injector well is entered in analogue means by the gas sampling hole depth on sandbox lid.The charcoal immobilized microbial inoculum adding set is by adding
Pressure syringe pump and injector well tandem compound are formed, and the quantity of injector well can be increased or decreased according to experimental conditions.With vasopressing injection
The connected injection bottom of pump is connected with screw type bit, and bit diameter is more than injector well diameter, is connected with injection orifice protective cover
Connect, protect injection orifice there are not 6 injection orifices by soil clogging, drill bit top, be separated by 60 ° two-by-two, in injection orifice protective cover,
It is even to be distributed on injection well tubular wall, enter soil for charcoal immobilized microbial inoculum vasopressing injection, biology is provided with the top of injector well
Charcoal immobilized microbial inoculum added holes, and scalable interface is provided with the middle part of injector well, for adjusting injector well length.
With reference to Figure of description and embodiment, make further specific explaination explanation to the present invention.
As shown in figure 1, the invention provides a kind of soil vapor extraction technical modelling device, including stereotest sandbox,
Gas phase extraction device, charcoal immobilized microbial inoculum adding set and the sampling apparatus being connected with sandbox.Stereotest sandbox includes
Sandbox 4, pollutant add pipeline 5, the soil sampling hole 12 for being arranged on sandbox one side, sandbox lid 14 and are arranged on sandbox lid
Gas sampling hole 15 above and extracting wellhole 16.Gas phase extraction device includes the jet pump 1, connecting pipe 2, stream being sequentially connected
Gauge 3 and gasser 6, and extraction well 8, the flowmeter being arranged on extraction well, active carbon filter 10 is connected by pipeline
With vavuum pump 11, complete soil vapor extraction technique device is formed.Charcoal immobilized microbial inoculum adding set includes pressurization and noted
Penetrate pump 7 and injector well 13.Vasopressing injection pump 7 is connected with injector well 13, and injector well 13 passes through the gas sampling on sandbox lid
Hole 15 is goed deep into experimental rig.
As depicted in figs. 1 and 2, the three-dimensional size of sandbox 4 is long 1000mm, high 1000mm, high 1200mm, and material is organic glass
Glass.There are diameter 40mm 10 soil sampling holes 12 in sandbox side, be separated by 100mm two-by-two.It is diameter among sandbox lid 14
60mm extracting wellhole 16.A diameter of 10mm gas sampling hole 15 is in crossing distribution, totally 24.While there are 6 gases to adopt
Sample hole, spacing is 50mm to close extract wellhole 5 two-by-two, and outermost gas sampling pitch of holes is 100mm.The flow of jet pump 1
For 10~60L/min, the flow of vavuum pump 11 is 10~60L/min, and vacuum is less than 30kPa, and the flow of two pumps is adjustable.Flow
The measurement range of meter 3 is 0~30L/min.The pressure of vasopressing injection pump 7 reaches as high as 1MPa.Gasser 6, extraction well 8 and connection
The material of pipeline is pvc pipe.
Charcoal immobilized microbial inoculum adding set vasopressing injection pump 7 is connected with injector well 13 as shown in Figure 3 and Figure 4, note
Well 13 is penetrated by the gas sampling hole depth on sandbox lid to enter in experimental rig.The bottom of injector well 13 connects with screw type bit 18
Connect, soil is rotated into for injector well, bit diameter is more than the diameter of injector well 13, is connected with injection orifice protective cover 20, protects
Injection orifice is protected not by soil clogging, there are 6 injection orifices 17 drill bit top, are separated by 60 ° two-by-two, among injection orifice protective cover 20,
It is uniformly distributed on injection well tubular wall, enters soil for charcoal immobilized microbial inoculum vasopressing injection, the top of injector well 13 is provided with
Charcoal immobilized microbial inoculum added holes 19, drill bit top 10cm have 6 injection orifices 17, are separated by 60 ° two-by-two, are evenly distributed on injection
On well tubular wall, enter soil for charcoal immobilized microbial inoculum vasopressing injection.And the middle part of injector well 13 is provided with scalable interface
21, for adjusting the length of injector well 13.The material of injector well 13 and screw type bit 18 is stainless steel.
Apparatus of the present invention are when in use：
(1) stereotest sandbox, gas phase extraction device, charcoal immobilized microbial inoculum adding set and sampling apparatus are assembled
After completion, pollutant is added using pollutant adding tube 5.Pollutant extracting, and profit are carried out first with gas phase extraction device
Pollutant concentration detection is carried out with gas sampling hole, when pollutant concentration no longer changes, soil vapor extraction technology is reached and dragged
The tail phase, efficient degrading bacteria then is added using charcoal immobilized microbial inoculum adding set, rational judgment immobilized microbial inoculum is to hangover
Stage VOCs removal effect, and verify the validity of microbial inoculum injection device.
(2) when carrying out gas phase extraction test, using the gas sampling hole 15 of the design of sandbox lid 14, multiple sprays can be set
Gas well, while gasser can be goed deep into sandbox in different orientation, jet can also be carried out in different depth.Experiment process
In can monitor whiff pressure, spray air flow and the extracting parameter such as flow, while gas sampling hole can be utilized in experiment different phase
Sampling carries out quantitative analysis at the diverse location of soil layer.
(3), can using the gas sampling hole 15 of the design of sandbox lid 14 when carrying out the addition experiment of thing charcoal immobilized microbial inoculum
Different azimuth, different depth is selected to carry out the vasopressing injection of high-effect bacterial.Rotated using the bottom screw type bit 18 of injector well 13
Into soil, the length of injector well 13 is adjusted with reference to flexible interface 21, there are 6 injection orifices above drill bit, is separated by 60 ° two-by-two, uniformly
It is distributed on injection well tubular wall, is injected with reference to vasopressing injection pump 7 for charcoal immobilized microbial inoculum.Not same order can tested simultaneously
Section, sampled using soil sampling hole at the diverse location of soil layer and carry out quantitative analysis.
By actual use, soil vapor extraction technical modelling device of the invention can carry out homogenously or inhomogenously soil layer
Under the conditions of soil vapor extraction experiment, charcoal immobilized microbial inoculum Degrading experiment and charcoal immobilized microbial inoculum strengthen gas phase
The simulated test of extracting；Parameters can be monitored in real time during experiment, it is main to include aeration flow, extracting flow and true
Reciprocal of duty cycle etc.；Simultaneously, moreover it is possible to experiment different phase to soil layer at diverse location soil sample or gaseous sample carry out sampled measurements,
It is determined that the charcoal immobilized microbial inoculum reinforced soil gas phase extraction technique repairing effect for contaminated site.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail
Describe in detail bright, it should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., the protection of the present invention should be included in
Within the scope of.
Claims (7)
1. a kind of soil vapor extraction technical modelling device, including stereotest sandbox, connected with the stereotest sandbox
Gas phase extraction device and sampling apparatus, and charcoal immobilized microbial inoculum adding set；Wherein：
The stereotest sandbox includes sandbox main body, pollutant adding set and pipeline, is arranged on the sandbox body side
Soil sampling hole, be arranged on the case lid of the sandbox body top, the set location of the pollutant adding set and pipeline
According to being actually needed, for experiment to be added into the sandbox body interior with pollutant；
The gas sampling hole depth on case lid that the charcoal immobilized microbial inoculum adding set passes through the sandbox body top enters
The sandbox body interior, the charcoal immobilized microbial inoculum adding set include vasopressing injection pump and the injection being connected in series
Well, wherein being provided with charcoal immobilized microbial inoculum added holes at the top of the injector well, the injection bottom connects with screw type bit
Connect, the diameter of the screw type bit is more than the diameter of the injector well, and there are several uniform above the screw type bit
The injection orifice of distribution.
2. soil vapor extraction technical modelling device as claimed in claim 1, wherein the charcoal immobilized microbial inoculum adds
Screw type bit upper end in device is connected with injection orifice protective cover, protects injection orifice not by soil clogging.
3. soil vapor extraction technical modelling device as claimed in claim 1, wherein being provided with and can stretch in the middle part of the injector well
Reducer coupling mouth, for adjusting the injector well length.
4. soil vapor extraction technical modelling device as claimed in claim 1, wherein the gas phase extraction device include according to
Actual use needs connecting pipe, gasser, extraction well and the vavuum pump of assembly and connection.
5. soil vapor extraction technical modelling device as claimed in claim 1, wherein having 6 notes above the screw type bit
Perforation, it is separated by 60 ° two-by-two.
6. soil vapor extraction technical modelling device as claimed in claim 1, wherein in the case lid of the sandbox body top
Portion is extracting wellhole, and several gas sampling holes are distributed with the extracting wellhole surrounding, wherein several described gas sampling holes
Arrangement be in crossing distribution centered on the extracting wellhole, and the quantity in the gas sampling hole is 24.
7. soil vapor extraction technical modelling device as claimed in claim 1, wherein the material of the stereotest sandbox is
Lucite, there are 10 soil sampling holes in the side of the stereotest sandbox.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510570185.4A CN105234163B (en) | 2015-09-09 | 2015-09-09 | Soil vapor extraction technical modelling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510570185.4A CN105234163B (en) | 2015-09-09 | 2015-09-09 | Soil vapor extraction technical modelling device |
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| CN105234163A CN105234163A (en) | 2016-01-13 |
| CN105234163B true CN105234163B (en) | 2017-12-08 |
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| CN109827978B (en) * | 2019-01-28 | 2020-07-10 | 中国科学院武汉岩土力学研究所 | Organic contaminated soil body thermal evaporation displacement test device based on three-dimensional stress state effect |
| CN111589855B (en) * | 2020-05-09 | 2022-05-10 | 北京泷涛环境修复有限公司 | Method and experimental device for repairing petroleum hydrocarbon pollution of heterogeneous aquifer |
| CN113926838A (en) * | 2021-11-17 | 2022-01-14 | 中国石油化工股份有限公司 | Fossil fuel contaminated soil remediation system and remediation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004016859A (en) * | 2002-06-13 | 2004-01-22 | Kajima Corp | In situ purification method of polluted soil |
| KR100873053B1 (en) * | 2008-07-16 | 2008-12-09 | 전남대학교산학협력단 | Purification method of petroleum contaiminated soil using steam and microbe |
| CN101898198B (en) * | 2009-05-27 | 2012-09-05 | 中国石油天然气集团公司 | Method for remedying oil pollution by unitedly using air shatter crack and microorganism and device thereof |
| CN103203355B (en) * | 2013-04-12 | 2014-11-05 | 江苏大地益源环境修复有限公司 | Ectopic thermal desorption treatment method of polluted soil |
| CN103658161B (en) * | 2013-10-21 | 2016-01-20 | 环境保护部华南环境科学研究所 | The biological reinforced air lift prosthetic device in contaminated by diesel oil type place and processing method thereof |
| CN203635615U (en) * | 2013-11-14 | 2014-06-11 | 西安奥赛福科技有限公司 | In-situ remediation system for polluted soil |
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