CN105152393B - A kind of laboratory simulation device repaired for underground water pollution and its application method - Google Patents
A kind of laboratory simulation device repaired for underground water pollution and its application method Download PDFInfo
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- CN105152393B CN105152393B CN201510510956.0A CN201510510956A CN105152393B CN 105152393 B CN105152393 B CN 105152393B CN 201510510956 A CN201510510956 A CN 201510510956A CN 105152393 B CN105152393 B CN 105152393B
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Abstract
The embodiments of the invention provide a kind of laboratory simulation device repaired for underground water pollution and its application method, device includes：Simulate aqueous layer unit, by the first peristaltic pump from water storage barrel to simulation water-bearing layer water delivery；Water distribution unit is taken out, pumped well connects simulation water-bearing layer and outside with drinking-water pipe, and screen casing is located at below simulation water-bearing layer water level, and drinking-water pipe intake is located at screen casing bottom；Second peristaltic pump connects drinking-water pipe and aqueduct, aqueduct other end connecting T-shaped water distributor；Unit is repaired, vadose region bottom is communicated with simulation water-bearing layer；Packing layer S-type flowing of the current in vadose region and reaction zone；Wireway can be closed by laying many in overburden layer；Air stripping unit, Aeration fan is connected with snorkel one end, and the snorkel other end is stretched to below the water layer water level of pumped well；Multiple extraction well connection simulation water-bearing layers and outside, extraction well are connected with air exhauster；Monitoring unit, including multiple sampling pipes, respectively positioned at simulation water-bearing layer, reaction zone and vadose region.
Description
Technical field
It is used for underground water pollution reparation the present invention relates to field of underground water pollution repair in environmental protection, more particularly to one kind
Laboratory simulation device and its application method.
Background technology
Underground water is precious resources for the survival of mankind, since industrialization society is entered, and is supplied as important town and country
The underground water at water water source, due to the influence of mankind's activity, a large amount of pollutants enter groundwater environment so that underground water is inevitable
It is contaminated, and aggravate year by year.In view of the seriousness of underground water pollution, people put into a large amount of manpower and materials to pollution
Groundwater remediation technology is studied.Contaminant transportation mistake is further studied by the experimental provision for building simulated groundwater environment
Journey and the forewords such as recovery technique effectiveness are solved the problems, such as, be to study one of important means of such problem in science.
Current Remedy Technology of Contaminated Groundwater mainly has permeable coefficient tensor, multistage reinforcing groundwater remediation technology, soil
Gas phase extraction technique and pump-and-treat technology etc., but often a kind of practical application of technology is built upon laboratory research etc. one and is
On row scientific research basis.Therefore, the important means that researcher studies such problem in science is by building underground water
Experimental simulation device, Study of The Underground water pollution repairing effect and repair mechanisms, and further develop and optimize every technology.Therefore
Underground water pollution process simulation that build design science, that easy-operating, economic utility is high and prosthetic device, which turn into, is engaged in underground
The hot issue of the laboratory concern of water repairing research.
Polluted Groundwater is simulated in water-bearing layer using column experiments and groove experiment more than laboratory simulation experiment at this stage
Motion, and analyze the removal efficiency of pollutant.But due to the birth defect of column experiments be can only simulating pollution thing one-dimensional distribution
Situation, it is impossible to the distributed in three dimensions feature of simulating pollution thing so that the groundwater remediation environment of column experiments simulation is deposited with actual environment
In very big gap, it is difficult to deep announcement pollutant repair mechanisms.Compared to column experiments, groove experiment is used as underground water pollution reparation
The laboratory simulation important device of technology, just can simulated groundwater three-dimensional feature, and analyze the pollution in repair process well
The three dimensional change trend of thing degraded.Similarly, existing groove experiment often can only individually simulate a kind of recovery technique, it is another when simulating
, it is necessary to lay every remanufactured component again when planting recovery technique, or even filling dielectric material etc. is redesigned, virtually increased
The workload and job costs of researcher, reduce operating efficiency.Therefore groundwater remediation technology can be used for by developing one kind
Study mechanism, can improve the multi-functional laboratory installation of research work efficiency, increase analogue means, as underground water pollution again
Object is paid close attention in analog study.
The content of the invention
The problem of existing for prior art, the embodiment of the present application provides a kind of reality repaired for underground water pollution
Room analogue means and its application method are tested, can be dirty by multistage reinforcing groundwater remediation technology and soil vapor extraction technology underground water
The laboratory simulation device of recovery technique combined running is contaminated, Polluted Groundwater reparative experiment room simulated environment and actual rings are reduced
Gap between border, true reflection underground water pollution repairs situation, is that multistage reinforcing groundwater remediation technology and gaseous phase of soil are taken out
The engineer applied for carrying technology Remedy Technology of Contaminated Groundwater provides objective theoretical foundation.
The embodiment of the present application provides a kind of laboratory simulation device repaired for underground water pollution, and it includes：Simulation contains
Water layer unit, the aqueous layer unit of simulation includes water storage barrel, the first peristaltic pump and simulation water-bearing layer, is wriggled by described first
Pump is from the water storage barrel to simulation water-bearing layer water delivery；Water distribution unit is taken out, the water distribution unit of taking out includes pumped well, drawn water
Pipe, the second peristaltic pump, aqueduct and T-shaped water distributor；The drinking-water pipe connection simulation of the pumped well and position in the inner contains
Water layer and outside, the screen casing of the bottom of drawing water are located at below the water level of the simulation water-bearing layer, the intake of the drinking-water pipe
Positioned at the screen casing bottom；Described second peristaltic pump one end connects the top of the drinking-water pipe, and other end connection aqueduct is described
Multiple micropores are distributed on the other end end vertical connecting T-shaped water distributor of aqueduct, the T-shaped water distributor；Unit is repaired, it is described
Repair the vadose region of bottom, the overburden layer at top and reaction therebetween that unit includes separating by waterproof ventilated membrane
Area；The vadose region is located at pumped well periphery and its bottom is communicated with the simulation water-bearing layer；Current are in the vadose region
The S-type flowing of packing layer；S-type flowing of the current in the reaction zone packed layer；Many of vertical runs can in the overburden layer
Wireway is closed, the wireway that closes connects the reaction zone and outside；Air stripping unit, the air stripping unit
Including Aeration fan, pressure-regulating device, snorkel, air exhauster and extraction well, the Aeration fan is adjusted by the pressure
Device is connected with one end of the snorkel, and the other end of the snorkel is stretched to below the water layer water level of the pumped well；
Reaction zone described in multiple extraction well insertions positioned at the pumped well downstream and overburden layer and connect the simulation water-bearing layer
And outside, the extraction well is connected with air exhauster.
Preferably, the laboratory simulation device for underground water pollution reparation also includes：Monitoring unit, the monitoring unit
Including multiple sampling pipes, respectively positioned at the simulation water-bearing layer, reaction zone and vadose region.
Preferably, the sampling pipe is provided with the simulation water-bearing layer, the sampling pipe is located in the extraction well.
Preferably, many sampling pipes are vertically plugged on the reaction zone base plate, the sampling pipe is laid in described T-shaped
Water distributor downstream, and laid along the reaction zone current S types flow circuits.
Preferably, many sampling pipes parallel to the pumped well are provided with the vadose region, at least described in one
The water inlet of sampling pipe is located at the intersection in the vadose region and the simulation water-bearing layer.
Preferably, the aqueous layer unit of simulation also includes adjustable downflow weir, and the adjustable downflow weir is located at described
Simulate at the top of water-bearing layer, the water level that the adjustable downflow weir is used for the simulation water-bearing layer is maintained at specified altitude assignment.
Preferably, the water distribution unit of taking out also includes screen pack, and the screen pack is located at the pumped well screen casing and institute
State at drinking-water pipe intake.
Preferably, the aqueduct is located in the reparation unit, and flow direction is parallel to the mould in the aqueduct
Intend water-bearing layer flow direction.
Preferably, multiple dividing plates perpendicular to the pumped well are laid in the packing layer of the vadose region and arch mistake is formed
Aquaporin, current are in the S-type flowing of vertical direction.
Preferably, the medium filler for absorption degradation is filled in the reaction zone, at least two divider uprights are in described
Aqueduct and it is interspersed in the reaction zone, current pass through the S-type flowing of the dividing plate.
Preferably, the overburden layer includes soil and activated carbon and mixed, the thickness of the overburden layer for 100~
200mm。
Preferably, the top of the pumped well is connected with gas recycling and processing device.
Preferably, the extraction well be located at the pumped well downstream, and the extraction well along water (flow) direction be in array
Arrangement.
Accordingly, the present invention provides a kind of application method for the laboratory simulation device repaired for underground water pollution, when
Any of the above-described described laboratory simulation device never running state conversion for being used for underground water pollution reparation to multistage strengthens ground
When lower water recovery technique and soil vapor extraction technology repair system combined running state, including following use steps：(1) start
First peristaltic pump simultaneously remains on state, then starts the Aeration fan, air exhauster, the second peristaltic pump successively and keep fortune
Row state；(2) sewage is conveyed from the water storage barrel to the simulation water-bearing layer by first peristaltic pump, keeps the simulation
The flow rate of water flow in water-bearing layer is stable；(3) the Aeration fan suction air, after the pressure-regulating device, is supplied gas by described
The volatile contaminant that pipe is delivered in the simulation water-bearing layer, air and the abundant making contact of sewage, sewage passes through gas-liquid circle
Face and shifted to gas phase；(4) air of the part containing volatile contaminant is passed through by the air exhauster in the simulation water-bearing layer
Extraction well is detached to earth's surface, is handled by gas recycling and processing device；Air of the part containing volatile contaminant passes through described anti-
Water ventilated membrane enters the reaction zone, and by the packing layer adsorption treatment of the reaction zone and overburden layer；(5) described second wriggles
The sewage in the simulation water-bearing layer is pumped into the drinking-water pipe by pump by the screen casing of the pumped well, after be delivered to the water guide
Pipe, the reaction zone is uniformly distributed in after flowing to the T-shaped water distributor；(6) pollutant in the reaction zone in sewage is by institute
The packing layer adsorption treatment of reaction zone and overburden layer is stated, the water purification stream seepage flow after processing is back to the vadose region, and flows back into institute
Simulation water-bearing layer is stated, water circulation is formed.
Preferably, when device never running state conversion to multistage reinforcing groundwater remediation technology isolated operation state,
Including following use steps：(1) Aeration fan, air exhauster are closed, starts first peristaltic pump, the second peristaltic pump and protects
Hold running status；(2) sewage is conveyed from the water storage barrel to the simulation water-bearing layer by first peristaltic pump, keeps described
The flow rate of water flow for simulating water-bearing layer is stable；(3) second peristaltic pump draws water the sewage in the simulation water-bearing layer by described
The screen casing of well is pumped into the drinking-water pipe, after be delivered to the aqueduct, flow to after the T-shaped water distributor be uniformly distributed in it is described
Reaction zone；(4) pollutant in the reaction zone in sewage is by the packing layer adsorption treatment of the reaction zone and overburden layer, processing
Water purification stream seepage flow afterwards is back to the vadose region, and flows back into the simulation water-bearing layer, forms water circulation.
Preferably, when device never running state conversion to soil vapor extraction technology isolated operation state, including under
State and use step：(1) second peristaltic pump is closed, starts first peristaltic pump and remains on state, then start successively
The Aeration fan, air exhauster simultaneously remain on state；(2) by first peristaltic pump from the water storage barrel to the simulation
Water-bearing layer conveys sewage, keeps the flow rate of water flow in the simulation water-bearing layer stable；(3) the Aeration fan suction air, through institute
State after pressure-regulating device, the simulation water-bearing layer, air and the abundant making contact of sewage, sewage are delivered to by the snorkel
In volatile contaminant through gas-liquid interface and being shifted to gas phase；(4) part is dirty containing volatility in the simulation water-bearing layer
The air of dye thing is detached to earth's surface by the air exhauster by extraction well, is handled by gas recycling and processing device；Part, which is contained, waves
The air for sending out contact scar thing enters the reaction zone by the waterproof ventilated membrane, and by the reaction zone and the filler of overburden layer
Layer adsorption treatment.
Preferably, strengthen groundwater remediation technology isolated operation State Transferring to multistage from multistage when device and strengthen underground water
When recovery technique and soil vapor extraction technology repair system combined running state, including following use steps：Using following step
It is rapid to replace (1) step：Start first peristaltic pump, the second peristaltic pump and remain on state, then start the aeration successively
Blower fan, air exhauster simultaneously remain on state.
Preferably, when device is from soil vapor extraction technology isolated operation State Transferring to multistage reinforcing groundwater remediation skill
When art and soil vapor extraction technology repair system combined running state, including following use steps：Replaced using following steps
(1) step：Start first peristaltic pump, Aeration fan, air exhauster and remain on state, restart second peristaltic pump
And remain on state.
Preferably, when device is from soil vapor extraction technology isolated operation State Transferring to multistage reinforcing groundwater remediation skill
During art isolated operation state, including following use steps：(1) step is replaced using following steps：Start first peristaltic pump
And state is remained on, the Aeration fan, air exhauster are closed successively, after after the stable level of the simulation water-bearing layer, are restarted
Second peristaltic pump simultaneously remains on state.
Preferably, from multistage reinforcing groundwater remediation technology and soil vapor extraction technology repair system combined running state
During conversion to multistage reinforcing groundwater remediation technology isolated operation state, including following use steps：Replaced using following steps
(1) step：Start first peristaltic pump, the second peristaltic pump and remain on state, the Aeration fan, pumping are closed successively
Machine.
Preferably, when device is from multistage reinforcing groundwater remediation technology isolated operation State Transferring to soil vapor extraction skill
During art isolated operation state, including following use steps：(1) step is replaced using following steps：Start first peristaltic pump
And remain on state, second peristaltic pump is closed, after after the stable level of the simulation water-bearing layer, then starts the exposure successively
Gas blower fan, air exhauster simultaneously remain on state.
Furthermore it is preferred that working as device from multistage reinforcing groundwater remediation technology and soil vapor extraction technology repair system
During combined running State Transferring to soil vapor extraction technology isolated operation state, including following use steps：Using following step
It is rapid to replace (1) step：Start first peristaltic pump, Aeration fan, air exhauster and remain on state, close described second compacted
Dynamic pump.
A kind of laboratory simulation device for underground water pollution reparation for being there is provided according to the embodiment of the present application and its use
Method, the device can be used for the laboratory simulation experiment of multistage reinforcing groundwater remediation technology reparation underground water, it can also be used to soil
Earth gas phase extraction technique repairs the laboratory simulation experiment of underground water, can easy, flexibly switching, and need not filling again between the two
Fill out, therefore, have substantially no effect on the process and effect of simulated experiment.In addition, can be organically by the two connected applications laboratory simulation
Experiment, extends the scope of application of device, improves the feature of single device；The device extraction well is dual-purpose well, in multistage
Used in reinforcing groundwater remediation technological system as the screen casing of simulation water-bearing layer sampling pipe, in soil vapor extraction technological system
In be used for volatile contaminant extraction.It repairs unit through whole simultaneously, sample path and pumping path is reduced to most short
While, simulation water-bearing layer environmental disturbances are also minimized；The device reaction area high-strength waterproof ventilated membrane and other regions
Separate, prevent that reaction zone polluted underground water seepage from simulating water-bearing layer, but allow passing through for the volatile contaminant for simulating water-bearing layer；
The unit simulation water-bearing layer Inlet and outlet water uses the adjustable downflow weir of porous sieve plate, is accurately adjusted while water distribution uniformity, charge for remittance
Control simulation water-bearing layer height of water level.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are this Shens
Some embodiments please, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, this Shen
Schematic description and description please is used to explain the application, does not constitute the improper restriction to the application.In the accompanying drawings：
Fig. 1 is that one embodiment of the present of invention is used for the structural representation for the laboratory simulation device that underground water pollution is repaired
Figure；
Fig. 2 is that the A-A sections for the laboratory simulation device that one embodiment of the present of invention is used for underground water pollution reparation show
It is intended to.
Reference：
1：First peristaltic pump；2：Second peristaltic pump；3：Simulate water-bearing layer overfall；
4：Simulate water-bearing layer water inlet；5：Simulate water-bearing layer delivery port；6：Vadose region dividing plate；
7：Vadose region；8：Reaction zone；9：Overburden layer；10：Pumped well；11：Drinking-water pipe；
12：Snorkel；13：Aqueduct；14：Reaction zone sampling pipe；15：Wireway can be closed；
16：Simulate water-bearing layer sampling pipe；17：Extraction well；18：Reaction zone dividing plate；
19：T-shaped water distributor；20：Simulate water-bearing layer；21：Aeration fan；22：Pressure-regulating device；
23：Air exhauster.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In accompanying drawing, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of the application protection.
The main thought of the embodiment of the present application is, according to the technical scheme of the embodiment of the present application, to pass through each in device
The cooperation and switching of part, can be used for multistage reinforcing groundwater remediation technology and the laboratory simulation for repairing underground water are used alone
Experiment, it can also be used to which the laboratory simulation experiment for repairing underground water is used alone in soil vapor extraction technology, can be also used for many
Level reinforcing groundwater remediation technology and soil vapor extraction technical combinations use the laboratory simulation experiment for repairing underground water；Device
Unused state, two kinds of technologies are used alone between state, two kinds of technical tie-up uses flexibly to switch, expanding unit
The scope of application, improves the feature and treatment effect of single device.
To make the purpose, technical scheme and advantage of the application clearer, below in conjunction with drawings and the specific embodiments, to this
Application is described in further detail.
Fig. 1 is that one embodiment of the present of invention is used for the structural representation for the laboratory simulation device that underground water pollution is repaired
Figure.Fig. 2 is that one embodiment of the present of invention is used for the A-A diagrammatic cross-sections for the laboratory simulation device that underground water pollution is repaired.
As depicted in figs. 1 and 2：
Laboratory simulation device for underground water pollution reparation includes：Simulate aqueous layer unit, take out water distribution unit, reparation
Unit, air stripping unit and monitoring unit.
Simulating aqueous layer unit includes water storage barrel, the first peristaltic pump 1 and simulation water-bearing layer 20, and the interior splendid attire of water storage barrel is mould
Intend the underground water being contaminated, water storage barrel is connected by silicone tube with simulation water-bearing layer water inlet 4；First peristaltic pump 1 can be real
Show water storage barrel to the quantitative water delivery in simulation water-bearing layer 20.
Preferably, simulating aqueous layer unit also includes adjustable downflow weir, and adjustable downflow weir is located at simulation water-bearing layer 20
Top, adjustable downflow weir, which is used to simulating the water level in water-bearing layer 20, is maintained at specified altitude assignment.
Preferably, simulation water-bearing layer 20 contains provided with simulation water-bearing layer overfall 3, simulation water-bearing layer water inlet 4 and simulation
Water layer delivery port 5, simulation water-bearing layer 20 is from 2~6mm sand grains simulation water-bearing layer.
Taking out water distribution unit includes pumped well 10, drinking-water pipe 11, the second peristaltic pump 2, aqueduct 13 and T-shaped water distributor 19；Take out
Water pipe 11 and snorkel 12 are located in pumped well 10, and pumped well 10 connects simulation water-bearing layer 20 and outside with drinking-water pipe 11, preferably
Ground, the caliber of pumped well 10 is 40~60mm, and pipe range is 600~700mm.The screen casing of the bottom of pumped well 10 is located at simulation water-bearing layer
Below 20 water levels, the intake of drinking-water pipe 11 is located in the middle of screen casing portion on the lower；Preferably, the pipe range of screen casing is 150~200mm,
Screen casing is located at 50~100mm below the simulation water level of water-bearing layer 20.
Second peristaltic pump 2 is located at the top for repairing unit, and the second peristaltic pump 2 is used for the quantitative extraction of underground water, and second is compacted
Dynamic one end of pump 2 connects the top of drinking-water pipe 11, and other end connection aqueduct 13, aqueduct 13 is located in overburden layer 9, aqueduct 13
Other end end vertical connecting T-shaped water distributor 19, T-shaped water distributor 19 is placed in the one end of reaction zone 8 away from drinking-water pipe 11, T-shaped
Multiple micropores are distributed on water distributor 19.
Preferably, the caliber of drinking-water pipe 11 is 6~10mm.Preferably, aqueduct 13, which is located at, repairs in unit, aqueduct 13
Interior flow direction is parallel to the simulation flow direction of water-bearing layer 20.Preferably, the caliber of aqueduct 13 is 10~20mm, and pipe range is
500~600mm.Preferably, the caliber of T-shaped water distributor 19 is 10~20mm, the aperture of the micropore on T-shaped water distributor 19 for 1~
3mm。
Preferably, taking out water distribution unit also includes screen pack, and screen pack is located at the screen casing of pumped well 10 to be taken with drinking-water pipe 11
At the mouth of a river.
Repair the vadose region 7 of unit including bottom, the overburden layer 9 at top and reaction zone 8 therebetween.
Separated between the vadose region 7 of bottom, the overburden layer 9 at top and reaction zone 8 by waterproof ventilated membrane, using poly-
The use polytetrafluoroethylene (PTFE) material of tetrafluoroethene material, the bottom of vadose region 7 is communicated with simulation water-bearing layer 20.
Vadose region 7 is located at the well casing of pumped well 10 periphery；Preferably, the quartz sand that the filling filler of vadose region 7 is 3~5mm
Or haydite, the filling scope of vadose region 7 includes 80~160mm of outside radiation radius centered on pumped well 10.
Current S-type flowing in the vertical direction of the packing layer of vadose region 7；Preferably, laid in the packing layer of vadose region 7
Multiple vadose region dividing plates 6 perpendicular to pumped well 10 and form arch and cross aquaporin, current are in the S-type flowing of vertical direction.
Preferably, the medium filler for absorption degradation is filled in reaction zone 8, can be filled out according to pollutant from respective media
Material, such as zeolite or Zero-valent Iron.In reaction zone 8, at least two reaction zone dividing plates 18 are laid perpendicular to aqueduct 13, and anti-
Answer and be interspersed in area 8, generally, is staggered at the area of 18 side of reaction zone dividing plate 1/4, water of the current in the packed layer of reaction zone 8
Square to S-type flowing.Preferably, through hole is uniformly distributed on reaction zone dividing plate 18, and the aperture of through hole is 15~25mm, Kong Jian
Away from for 5~10mm.
Overburden layer 9 is located at the top of reaction zone 8.Preferably, overburden layer 9 includes soil and activated carbon is mixed, generally, soil
The volume ratio of earth and activated carbon is 4：1, the thickness of overburden layer 9 is 100~200mm.The plant that the top of overburden layer 9 can be planted is also
Adsorbable degraded or enrichment pollutant, adsorbable part enters the volatile contaminant of overburden layer 9 by waterproof ventilated membrane.
Many of vertical runs can close wireway 15 in overburden layer 9, can close the connection reaction zone 8 of wireway 15 and outside,
It can close in the bottom intercalation reaction area 8 of wireway 15, characteristic be repaired according to pollutant, wireway 15 can be closed by opening or closing,
To increase or decrease oxygen content level in reaction zone 8.
Air stripping unit Aeration fan 21, pressure-regulating device 22, snorkel 12, air exhauster 23 and extraction well 17.Expose
Gas blower fan 21 is connected by pressure-regulating device 22 with one end of snorkel 12, and the other end of snorkel 12 stretches to pumped well 10
Water layer water level below；Preferably, the top of pumped well 10 is connected with gas recycling and processing device, is easy at the collection to tail gas
Reason, it is to avoid secondary pollution.
Multiple insertion reaction zones 8 of extraction well 17 and overburden layer 9 positioned at the downstream of pumped well 10, and connection simulation water-bearing layer 20
And outside, extraction well 17 is connected with air exhauster 23.Preferably, extraction well 17 is located at the downstream of pumped well 10, and the edge of extraction well 17
Water (flow) direction to be arranged in array.Extraction well 17 is laid 1~2 along Groundwater Flow direction and arranged, and 3~5 rows, extraction well 17 is vertically worn
Reaction zone 8 and overburden layer 9 are crossed, and in the exposure of overburden layer 9, plays a part of accelerating volatile contaminant to be delivered to earth's surface.
Preferably, monitoring unit is also included for the laboratory simulation device that underground water pollution is repaired, monitoring unit includes
Multiple sampling pipes, respectively positioned at simulation water-bearing layer 20, reaction zone 8 and vadose region 7.Preferably, it is provided with mould in simulation water-bearing layer 20
Intend water-bearing layer sampling pipe 16, simulation water-bearing layer sampling pipe 16 is located in extraction well 17.Preferably, vertically inserted on the base plate of reaction zone 8
If many reaction zone sampling pipes 14, reaction zone sampling pipe 14 is laid in the T-shaped downstream of water distributor 19, and along the current S types of reaction zone 8
Flow circuits are laid.Preferably, many sampling pipes parallel to pumped well 10 are provided with vadose region 7, by the depth of vadose region dividing plate 6
Degree lays sampling pipe, and the water inlet of at least one sampling pipe is located at the intersection in vadose region 7 and simulation water-bearing layer 20.
The application method for the laboratory simulation device repaired for underground water pollution is described further below, for underground water
The laboratory simulation device of pollution amelioration includes following three kinds of use states：Multistage reinforcing groundwater remediation technology and gaseous phase of soil
Extraction technique repair system combined running state, multistage are strengthened groundwater remediation technology isolated operation state and taken out with gaseous phase of soil
Put forward technology isolated operation state.
When device is in multistage reinforcing groundwater remediation technology and soil vapor extraction technology repair system combined running shape
, may never running status or multistage reinforcing groundwater remediation technology isolated operation state or soil vapor extraction technology list during state
Only running state conversion is to above-mentioned state.
First, device is introduced to take out in never running state conversion to multistage reinforcing groundwater remediation technology and gaseous phase of soil
Put forward the operating method of technology repair system combined running state：
Step 1：Start the first peristaltic pump 1 and remain on state, then start Aeration fan 21, air exhauster 23, the successively
Two peristaltic pumps 2 simultaneously remain on state.
Step 2：There is preprepared simulated groundwater in water storage barrel, the first peristaltic pump 1 is by silicone tube by water storage barrel
It is connected with simulation water-bearing layer water inlet 4, sewage is quantitatively conveyed from water storage barrel to simulation water-bearing layer 20 by the first peristaltic pump 1,
Keep the flow rate of water flow in simulation water-bearing layer 20 stable.
Step 3：Aeration fan 21 is connected by pressure-regulating device 22 with one end of snorkel 12, snorkel 12 it is another
Pumped well 10 is goed deep at end, and the processing of the top of pumped well 10 is connected with gas recycling and processing device, the suction air of Aeration fan 21, through pressure
After apparatus for adjusting force 22, simulation water-bearing layer 20 is delivered in the form of micro-bubble by snorkel 12, air is fully touched with sewage
Hit contact so that gas dissolved water is fully contacted with underground water, the volatile contaminant in sewage through gas-liquid interface and to
Gas phase is shifted.
Step 4：Most of air containing volatile contaminant passes through extraction well by air exhauster 23 in simulation water-bearing layer 20
17 detach to earth's surface, are handled by gas recycling and processing device；The air that fraction contains volatile contaminant passes through waterproof and breathable
Film enters reaction zone 8, and by the packing layer adsorption treatment of reaction zone 8 and overburden layer 9；In the simulation downstream of water-bearing layer 20, air exhauster
23 constantly will simulate the air of water-bearing layer 20 by extraction well 17 extracts out so that quick downstream extraction well 17 of volatile contaminant
It is mobile, and enter the processing of gas recycling and processing device through extraction well 17, reach the purpose for removing volatile contaminant.
Step 5：The well depth of pumped well 10 is to water-bearing layer 20 is simulated, and the pumped well 10 is interior to be provided with drinking-water pipe 11, drinking-water pipe 11
Intake is located at screen casing centre position；The sewage for simulating water-bearing layer 20 is pumped into by the second peristaltic pump 2 by the screen casing of pumped well 10
To drinking-water pipe 11, after be delivered to aqueduct 13, be uniformly distributed in reaction zone 8 after flowing to T-shaped water distributor 19.
Step 6：Pollutant in reaction zone 8 in sewage is by the packing layer adsorption treatment of reaction zone 8 and overburden layer 9, processing
Water purification stream seepage flow afterwards is back to vadose region 7, and flows back into simulation water-bearing layer 20, forms water circulation.Meanwhile, simulation water-bearing layer 20 has
There is certain flow rate, after preceding a collection of polluted underground water extraction, the polluted underground water of upstream is supplemented in time, can be achieved to pollute in underground water
The lasting removal of thing, it is ensured that the stable operation of simulation test device.
Secondly, device is introduced to be in from multistage reinforcing groundwater remediation technology isolated operation State Transferring to multistage reinforcing ground
The operating method of lower water recovery technique and soil vapor extraction technology repair system combined running state：
Step 1：Aeration fan 21, air exhauster 23 are closed, starts the first peristaltic pump 1, the second peristaltic pump 2 and remains on shape
State.
Step 2：There is preprepared simulated groundwater in water storage barrel, the first peristaltic pump 1 is by silicone tube by water storage barrel
It is connected with simulation water-bearing layer water inlet 4, sewage is quantitatively conveyed from water storage barrel to simulation water-bearing layer 20 by the first peristaltic pump 1,
Keep the flow rate of water flow in simulation water-bearing layer 20 stable.
Step 3：The well depth of pumped well 10 is to water-bearing layer 20 is simulated, and the pumped well 10 is interior to be provided with drinking-water pipe 11, drinking-water pipe 11
Intake is located at screen casing centre position；The sewage for simulating water-bearing layer 20 is pumped into by the second peristaltic pump 2 by the screen casing of pumped well 10
To drinking-water pipe 11, after be delivered to aqueduct 13, be uniformly distributed in reaction zone 8 after flowing to T-shaped water distributor 19.
Step 4：Pollutant in reaction zone 8 in sewage is by the packing layer adsorption treatment of reaction zone 8 and overburden layer 9, processing
Water purification stream seepage flow afterwards is back to vadose region 7, and flows back into simulation water-bearing layer 20, forms water circulation.Meanwhile, simulation water-bearing layer 20 has
There is certain flow rate, after preceding a collection of polluted underground water extraction, the polluted underground water of upstream is supplemented in time, can be achieved to pollute in underground water
The lasting removal of thing, it is ensured that the stable operation of simulation test device.
Then, introduce device be in from soil vapor extraction technology isolated operation State Transferring to multistage reinforcing underground water repair
The operating method of recovering technology and soil vapor extraction technology repair system combined running state：
Step 1：The second peristaltic pump 2 is closed, starts the first peristaltic pump 1 and remains on state, then starts aeration wind successively
Machine 21, air exhauster 23 simultaneously remain on state.
Step 2：There is preprepared simulated groundwater in water storage barrel, the first peristaltic pump 1 is by silicone tube by water storage barrel
It is connected with simulation water-bearing layer water inlet 4, sewage is quantitatively conveyed from water storage barrel to simulation water-bearing layer 20 by the first peristaltic pump 1,
Keep the flow rate of water flow in simulation water-bearing layer 20 stable.
Step 3：Aeration fan 21 is connected by pressure-regulating device 22 with one end of snorkel 12, snorkel 12 it is another
Pumped well 10 is goed deep at end, and the processing of the top of pumped well 10 is connected with gas recycling and processing device, the suction air of Aeration fan 21, through pressure
After apparatus for adjusting force 22, simulation water-bearing layer 20 is delivered in the form of micro-bubble by snorkel 12, air is fully touched with sewage
Hit contact so that gas dissolved water is fully contacted with underground water, the volatile contaminant in sewage through gas-liquid interface and to
Gas phase is shifted.
Step 4：Most of air containing volatile contaminant passes through extraction well by air exhauster 23 in simulation water-bearing layer 20
17 detach to earth's surface, are handled by gas recycling and processing device；The air that fraction contains volatile contaminant passes through waterproof and breathable
Film enters reaction zone 8, and by the packing layer adsorption treatment of reaction zone 8 and overburden layer 9；In the simulation downstream of water-bearing layer 20, air exhauster
23 constantly will simulate the air of water-bearing layer 20 by extraction well 17 extracts out so that quick downstream extraction well 17 of volatile contaminant
It is mobile, and enter the processing of gas recycling and processing device through extraction well 17, reach the purpose for removing volatile contaminant.
When device is in multistage reinforcing groundwater remediation technology and soil vapor extraction technology repair system combined running shape
During state, it may turn from multistage reinforcing groundwater remediation technology isolated operation state or soil vapor extraction technology isolated operation state
Shift to above-mentioned state.
First, device is introduced to be in from multistage reinforcing groundwater remediation technology isolated operation State Transferring to multistage reinforcing ground
The operating method of lower water recovery technique and soil vapor extraction technology repair system combined running state：
This method is repaiied with never running state conversion to multistage reinforcing groundwater remediation technology and soil vapor extraction technology
The difference of the operating method of complex system combined running state is：This method step 1 is the first peristaltic pump 1 of startup, the second peristaltic pump 2
And state is remained on, then start Aeration fan 21, air exhauster 23 successively and remain on state, other steps are identical, herein
No longer repeat.
Secondly, introduce device be in from soil vapor extraction technology isolated operation State Transferring to multistage reinforcing underground water repair
The operating method of recovering technology and soil vapor extraction technology repair system combined running state：
This method is repaiied with never running state conversion to multistage reinforcing groundwater remediation technology and soil vapor extraction technology
The difference of the operating method of complex system combined running state is：This method step 1 for start the first peristaltic pump 1, Aeration fan 21,
Air exhauster 23 simultaneously remains on state, restarts the second peristaltic pump 2 and remains on state, other steps are identical, herein no longer
Repeat.
, may be from soil vapor extraction technology when device is in multistage reinforcing groundwater remediation technology isolated operation state
Isolated operation state or multistage reinforcing groundwater remediation technology and soil vapor extraction technology repair system combined running state turn
Shift to above-mentioned state.
First, introduce device be in from soil vapor extraction technology isolated operation State Transferring to multistage reinforcing underground water repair
The operating method of recovering technology isolated operation state：
This method and never running state conversion to the operation side of multistage reinforcing groundwater remediation technology isolated operation state
The difference of method is：This method step 1 closes Aeration fan 21, pumping successively to start the first peristaltic pump 1 and remaining on state
Machine 23, after after the simulation stable level of water-bearing layer 20, restarts the second peristaltic pump 2 and remains on state, other steps are identical,
This is no longer repeated.
Secondly, device is introduced to be in from multistage reinforcing groundwater remediation technology and soil vapor extraction technology repair system group
Running state conversion is closed to the operating method of multistage reinforcing groundwater remediation technology isolated operation state：
This method and never running state conversion to the operation side of multistage reinforcing groundwater remediation technology isolated operation state
The difference of method is：This method step 1 is closed expose successively to start the first peristaltic pump 1, the second peristaltic pump 2 and remaining on state
Gas blower fan 21, air exhauster 23, other steps are identical, no longer repeat herein.
When device is in soil vapor extraction technology isolated operation state, groundwater remediation technology may be strengthened from multistage
Isolated operation state or multistage reinforcing groundwater remediation technology and soil vapor extraction technology repair system combined running state turn
Shift to above-mentioned state.
First, introduce device be in from multistage reinforcing groundwater remediation technology isolated operation State Transferring to gaseous phase of soil take out
Put forward the operating method of technology isolated operation state：
This method and never running state conversion to the area of the operating method of soil vapor extraction technology isolated operation state
It is not：This method step 1 closes the second peristaltic pump 2, water-bearing layer to be simulated to start the first peristaltic pump 1 and remaining on state
After 20 stable levels, then start Aeration fan 21, air exhauster 23 successively and remain on state, other steps are identical, herein not
Repeat again.
Secondly, device is introduced to be in from multistage reinforcing groundwater remediation technology and soil vapor extraction technology repair system group
Running state conversion is closed to the operating method of soil vapor extraction technology isolated operation state：
This method and never running state conversion to the area of the operating method of soil vapor extraction technology isolated operation state
It is not：This method step 1 closes second to start the first peristaltic pump 1, Aeration fan 21, air exhauster 23 and remaining on state
Peristaltic pump 2, other steps are identical, no longer repeat herein.
The operation for the laboratory simulation device for being further described repairing for underground water pollution below by specific embodiment
Effect.
First, repaired using said apparatus isolated operation multistage reinforcing groundwater remediation technical modelling underground water ammonia nitrogen pollution
Experiment, to repair underground water ammonia nitrogen pollution.
The ammonia-nitrogen content of simulated groundwater is 25mg/L.According to above-mentioned application method, multistage reinforcing groundwater remediation is enabled
Technology repair system.Pass through the ammonia of monitoring unit periodically from simulation water-bearing layer and vadose region 7 in sampling detection simulated groundwater
Nitrogen concentration, as a result shows, is filled in reaction zone from zeolite media material, and average grain diameter is 2~5mm；Repair and planted above area
Thing selects general plant；When vadose region 7 is from the filling of 3~6mm of average grain diameter haydites, reparative experiment result shows, ammonia nitrogen concentration
Decline at least more than 20mg/L, total removal rate reaches 92%.
Secondly, repaiied using the pollution of said apparatus isolated operation soil vapor extraction technical modelling underground water volatile benzenes
Multiple experiment, to repair the pollution of underground water volatile benzenes.
According to above-mentioned application method, soil vapor extraction technology is simulated using the present apparatus and repairs polluted soil and underground
Water.Volatile contaminant is mainly benzene homologues and nonaqueous phase liquid in underground water.Device includes simulating aqueous thickness 250mm, send
Tracheal diameter 20mm, 4 extraction wells, individual well aeration quantity is 20L/min, and individual well rate of air sucked in required is 4L/min.Reparative experiment result table
It is bright, volatile contaminant clearance 83%.
Finally, using said apparatus, combined running multistage strengthens groundwater remediation technology and soil vapor extraction technology simultaneously
The organic contamination of repair system simulated groundwater and ammonia and nitrogen pollution reparative experiment, to repair underground water Organic Contamination of Groundwater and ammonia nitrogen
Pollution.
According to above-mentioned application method, using present apparatus simulation by organic contamination and ammonia and nitrogen pollution place, aqueous thickness is simulated
300mm, its infiltration coefficient 10.2m/d.The internal diameter 40mm of pumped well 10, drinking-water pipe, snorkel, sample tube inner diameter are 10mm, if
Put 3 extraction wells.Reaction zone fills 6~8mm zeolites, and 5~7mm haydites are filled in quick vadose region 7.Analogue means pump-out is
0.2L/min, aeration quantity is 20L/min.Reparative experiment result shows, organic pollutant removal rate 72%, ammonia nitrogen removal frank
84%.
In summary, according to the technical scheme of the embodiment of the present application, the one kind provided according to the embodiment of the present application is used for ground
Laboratory simulation device and its application method that lower water pollution is repaired, can be by multistage reinforcing groundwater remediation technology and gaseous phase of soil
The laboratory simulation device of extraction technique Remedy Technology of Contaminated Groundwater combined running, reduces Polluted Groundwater reparative experiment room
Gap between simulated environment and actual environment, true reflection underground water pollution repairs situation, is multistage reinforcing groundwater remediation
The engineer applied of technology and soil vapor extraction technology Remedy Technology of Contaminated Groundwater provides objective theoretical foundation.
Device embodiment described above is only schematical, wherein the unit illustrated as separating component can
To be or may not be physically separate.Those of ordinary skill in the art are not paying the situation of performing creative labour
Under, you can to understand and implement.
Finally it should be noted that：Above example is only to the technical scheme for illustrating the application, rather than its limitations；Although
The application is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or to which part technical characteristic progress equivalent；
And these modification or replace, do not make appropriate technical solution essence depart from each embodiment technical scheme of the application spirit and
Scope.
Claims (22)
1. a kind of laboratory simulation device repaired for underground water pollution, it is characterised in that it includes：
Aqueous layer unit is simulated, the aqueous layer unit of simulation includes water storage barrel, the first peristaltic pump and simulation water-bearing layer, passes through institute
The first peristaltic pump is stated from the water storage barrel to simulation water-bearing layer water delivery；
Water distribution unit is taken out, the water distribution unit of taking out includes pumped well, drinking-water pipe, the second peristaltic pump, aqueduct and T-shaped water distributor；
The drinking-water pipe of the pumped well and position in the inner connects the simulation water-bearing layer and outside, the screen casing position of the bottom of drawing water
Below the water level of the simulation water-bearing layer, the intake of the drinking-water pipe is located at the screen casing bottom；Second peristaltic pump one
The top of the end connection drinking-water pipe, other end connection aqueduct, the other end end vertical connecting T-shaped water distribution of the aqueduct
Multiple micropores are distributed on pipe, the T-shaped water distributor；
Unit is repaired, the reparation unit includes the vadose region of the bottom separated by waterproof ventilated membrane, the overburden layer at top
And reaction zone therebetween；The vadose region is located at pumped well periphery and its bottom and simulation water-bearing layer phase
It is logical；Current are in the S-type flowing of the vadose region packing layer；S-type flowing of the current in the reaction zone packed layer；The earthing
Many of vertical runs can close wireway in layer, and the wireway that closes connects the reaction zone and outside；
Air stripping unit, the air stripping unit includes Aeration fan, pressure-regulating device, snorkel, air exhauster and taken out
Gas well, the Aeration fan is connected by the pressure-regulating device with one end of the snorkel, the snorkel it is another
End is stretched to below the water layer water level of the pumped well；It is anti-described in multiple extraction well insertions positioned at the pumped well downstream
Answer area and overburden layer and connect the simulation water-bearing layer and outside, the extraction well is connected with air exhauster.
2. the laboratory simulation device repaired as claimed in claim 1 for underground water pollution, it is characterised in that also include：
Monitoring unit, the monitoring unit includes multiple sampling pipes, respectively positioned at the simulation water-bearing layer, reaction zone and vadose region.
3. the laboratory simulation device repaired as claimed in claim 2 for underground water pollution, it is characterised in that the simulation
The sampling pipe is provided with water-bearing layer, the sampling pipe is located in the extraction well.
4. the laboratory simulation device repaired as claimed in claim 2 for underground water pollution, it is characterised in that the reaction
Vertically plug many sampling pipes on area's base plate, the sampling pipe is laid in the T-shaped water distributor downstream, and along described anti-
Answer area's current S types flow circuits laying.
5. the laboratory simulation device repaired as claimed in claim 2 for underground water pollution, it is characterised in that the seepage flow
The many sampling pipes parallel to the pumped well are provided with area, the water inlet of at least one sampling pipe is located at described ooze
Flow the intersection in area and the simulation water-bearing layer.
6. the laboratory simulation device repaired as claimed in claim 1 for underground water pollution, it is characterised in that the simulation
Aqueous layer unit also includes adjustable downflow weir, and the adjustable downflow weir is located at the top of the simulation water-bearing layer, described adjustable
The water level that formula downflow weir is used for the simulation water-bearing layer is maintained at specified altitude assignment.
7. the laboratory simulation device repaired as claimed in claim 1 for underground water pollution, it is characterised in that described to take out cloth
Water unit also includes screen pack, and the screen pack is located at the pumped well screen casing and at the drinking-water pipe intake.
8. the laboratory simulation device repaired as claimed in claim 1 for underground water pollution, it is characterised in that the water guide
Pipe is located in the reparation unit, and flow direction is parallel to simulation water-bearing layer flow direction in the aqueduct.
9. the laboratory simulation device repaired as claimed in claim 1 for underground water pollution, it is characterised in that the seepage flow
Multiple dividing plates perpendicular to the pumped well are laid in the packing layer in area and arch is formed and cross aquaporin, current are in vertical direction
S types flow.
10. the laboratory simulation device repaired as claimed in claim 1 for underground water pollution, it is characterised in that described anti-
The medium filler filled in area for absorption degradation is answered, at least two divider uprights are in the aqueduct and in the reaction zone
It is interspersed, current pass through S-type flowing on the dividing plate.
11. the laboratory simulation device repaired as claimed in claim 1 for underground water pollution, it is characterised in that described to cover
Soil layer includes soil and activated carbon is mixed, and the thickness of the overburden layer is 100~200mm.
12. the laboratory simulation device repaired as claimed in claim 1 for underground water pollution, it is characterised in that described to take out
The top of well is connected with gas recycling and processing device.
13. the laboratory simulation device repaired as claimed in claim 1 for underground water pollution, it is characterised in that described to take out
Gas well is located at the downstream of the pumped well, and the extraction well is arranged in array along water (flow) direction.
14. appointing in a kind of application method for the laboratory simulation device repaired for underground water pollution, such as claim 1-13
The laboratory simulation device never running state conversion for being used for underground water pollution reparation to multistage described in one claim is strengthened
Groundwater remediation technology and soil vapor extraction technology repair system combined running state, including following use steps：
(1) start first peristaltic pump and remain on state, then start the Aeration fan successively, it is air exhauster, second compacted
Dynamic pump simultaneously remains on state；
(2) sewage is conveyed from the water storage barrel to the simulation water-bearing layer by first peristaltic pump, keeps the simulation to contain
The flow rate of water flow of water layer is stable；
(3) the Aeration fan suction air, after the pressure-regulating device, is delivered to the simulation by the snorkel and contains
Volatile contaminant in water layer, air and the abundant making contact of sewage, sewage is shifted through gas-liquid interface and to gas phase；
(4) in the simulation water-bearing layer part air containing volatile contaminant by the air exhauster by extraction well detach to
Earth's surface, is handled by gas recycling and processing device；Air of the part containing volatile contaminant is entered by the waterproof ventilated membrane
The reaction zone, and by the packing layer adsorption treatment of the reaction zone and overburden layer；
(5) sewage in the simulation water-bearing layer is pumped into described draw water by second peristaltic pump by the screen casing of the pumped well
Pipe, after be delivered to the aqueduct, be uniformly distributed in the reaction zone after flowing to the T-shaped water distributor；
(6) pollutant in the reaction zone in sewage by the reaction zone and overburden layer packing layer adsorption treatment, after processing
Water purification stream seepage flow be back to the vadose region, and flow back into the simulation water-bearing layer, form water circulation.
15. the application method for the laboratory simulation device repaired as claimed in claim 14 for underground water pollution,
The laboratory simulation device strengthens underground from multistage reinforcing groundwater remediation technology isolated operation State Transferring to multistage
Water recovery technique and soil vapor extraction technology repair system combined running state, including following use steps：
(1) step is replaced using following steps：Start first peristaltic pump, the second peristaltic pump and remain on state, then according to
It is secondary to start the Aeration fan, air exhauster and remain on state.
16. the application method for the laboratory simulation device repaired as claimed in claim 14 for underground water pollution,
The laboratory simulation device strengthens groundwater remediation from soil vapor extraction technology isolated operation State Transferring to multistage
Technology and soil vapor extraction technology repair system combined running state, including following use steps：
(1) step is replaced using following steps：Start first peristaltic pump, Aeration fan, air exhauster and remain on state,
Restart second peristaltic pump and remain on state.
17. appointing in a kind of application method for the laboratory simulation device repaired for underground water pollution, such as claim 1-13
The laboratory simulation device never running state conversion for being used for underground water pollution reparation to multistage described in one claim is strengthened
Groundwater remediation technology isolated operation state, including following use steps：
(1) Aeration fan, air exhauster are closed, starts first peristaltic pump, the second peristaltic pump and remains on state；
(2) sewage is conveyed from the water storage barrel to the simulation water-bearing layer by first peristaltic pump, keeps the simulation to contain
The flow rate of water flow of water layer is stable；
(3) sewage in the simulation water-bearing layer is pumped into described draw water by second peristaltic pump by the screen casing of the pumped well
Pipe, after be delivered to the aqueduct, be uniformly distributed in the reaction zone after flowing to the T-shaped water distributor；
(4) pollutant in the reaction zone in sewage by the reaction zone and overburden layer packing layer adsorption treatment, after processing
Water purification stream seepage flow be back to the vadose region, and flow back into the simulation water-bearing layer, form water circulation.
18. the application method for the laboratory simulation device repaired as claimed in claim 17 for underground water pollution,
The laboratory simulation device strengthens groundwater remediation from soil vapor extraction technology isolated operation State Transferring to multistage
Technology isolated operation state, including following use steps：
(1) step is replaced using following steps：Start first peristaltic pump and remain on state, the aeration is closed successively
Blower fan, air exhauster, after after the stable level of the simulation water-bearing layer, restarting second peristaltic pump and remain on state.
19. the application method for the laboratory simulation device repaired as claimed in claim 17 for underground water pollution,
The laboratory simulation device is combined from multistage reinforcing groundwater remediation technology and soil vapor extraction technology repair system
Running state conversion to multistage strengthens groundwater remediation technology isolated operation state, including following use steps：
(1) step is replaced using following steps：Start first peristaltic pump, the second peristaltic pump and remain on state, successively
Close the Aeration fan, air exhauster.
20. appointing in a kind of application method for the laboratory simulation device repaired for underground water pollution, such as claim 1-13
The laboratory simulation device never running state conversion that being used for described in one claim, underground water pollution repaired is to gaseous phase of soil
Extraction technique isolated operation state, including following use steps：
(1) second peristaltic pump is closed, starts first peristaltic pump and remains on state, then start the aeration successively
Blower fan, air exhauster simultaneously remain on state；
(2) sewage is conveyed from the water storage barrel to the simulation water-bearing layer by first peristaltic pump, keeps the simulation to contain
The flow rate of water flow of water layer is stable；
(3) the Aeration fan suction air, after the pressure-regulating device, is delivered to the simulation by the snorkel and contains
Volatile contaminant in water layer, air and the abundant making contact of sewage, sewage is shifted through gas-liquid interface and to gas phase；
(4) in the simulation water-bearing layer part air containing volatile contaminant by the air exhauster by extraction well detach to
Earth's surface, is handled by gas recycling and processing device；Air of the part containing volatile contaminant is entered by the waterproof ventilated membrane
The reaction zone, and by the packing layer adsorption treatment of the reaction zone and overburden layer.
21. the application method for the laboratory simulation device repaired as claimed in claim 20 for underground water pollution, the reality
Room analogue means is tested individually to transport from multistage reinforcing groundwater remediation technology isolated operation State Transferring to soil vapor extraction technology
Row state, including following use steps：
(1) step is replaced using following steps：Start first peristaltic pump and remain on state, close described second and wriggle
Pump, after after the stable level of the simulation water-bearing layer, then starts the Aeration fan, air exhauster and remains on state successively.
22. the application method for the laboratory simulation device repaired as claimed in claim 20 for underground water pollution,
The laboratory simulation device is combined from multistage reinforcing groundwater remediation technology and soil vapor extraction technology repair system
Running state conversion is to soil vapor extraction technology isolated operation state, including following use steps：
(1) step is replaced using following steps：Start first peristaltic pump, Aeration fan, air exhauster and remain on state,
Close second peristaltic pump.
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| CN107907652B (en) * | 2017-09-27 | 2020-04-28 | 上海勘察设计研究院(集团)有限公司 | Effective extraction rate calculation method for groundwater remediation by extraction method |
| CN109078973A (en) * | 2018-06-27 | 2018-12-25 | 东南大学 | A kind of hyposmosis contaminated area underground water aeration restorative procedure |
| CN109454100B (en) * | 2018-10-11 | 2021-06-25 | 江苏大地益源环境修复有限公司 | Precipitation treatment method and device for in-situ soil and underground water remediation |
| CN109300386B (en) * | 2018-11-28 | 2021-03-16 | 贵州大学 | Experimental device for treating polluted karst underground water of leachate in phosphogypsum yard |
| CN110187059B (en) * | 2019-05-30 | 2020-07-31 | 中国环境科学研究院 | In-situ column experiment simulation system and simulation method for underground water well |
| CN112577856A (en) * | 2019-09-29 | 2021-03-30 | 中国石油化工股份有限公司 | Experimental device for researching migration rule of pollutants in underground water under artificial disturbance |
| CN112285321B (en) * | 2020-10-09 | 2021-06-01 | 合肥工业大学 | VOCs polluted soil body aeration repair test device and test method |
| CN112808760B (en) * | 2021-03-09 | 2022-04-15 | 河北民族师范学院 | Polluted soil in-situ leaching remediation method based on bionic transpiration |
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