CN109226224A - A kind of the Polluted Soil elution prosthetic device and operating method of temperature-controllable - Google Patents
A kind of the Polluted Soil elution prosthetic device and operating method of temperature-controllable Download PDFInfo
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- CN109226224A CN109226224A CN201811339427.9A CN201811339427A CN109226224A CN 109226224 A CN109226224 A CN 109226224A CN 201811339427 A CN201811339427 A CN 201811339427A CN 109226224 A CN109226224 A CN 109226224A
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- constant pressure
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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
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The present invention relates to a kind of Polluted Soils of temperature-controllable to elute prosthetic device, including constant pressure bottle, adjustable height tripod, elution column and leacheate collection vessel；The body top surface of constant pressure bottle is provided with liquid injection port, and is furnished with sealing-plug；Body top surface is separately provided with the escape pipe extended in aperture and fixed oriented bottle, and escape pipe extends close to bottom of bottle face；Water outlet is equipped in constant pressure bottle wall at inner bottom surface, escape pipe lowest point is lower than water outlet lowest point；Flexible heater plate is wrapped up on the outside of constant pressure bottle and temperature controller is connected by conducting wire；Adjustable height tripod is equipped with below constant pressure bottle.The beneficial effects of the present invention are: the present apparatus is by having made constant pressure bottle with the constant pressure principle of Markov bottle, constant flow velocity is provided for experiment, constant pressure bottle structure is simply easy to manufacture, pressure head is considered simultaneously, infiltration coefficient can explicitly be obtained, hydraulic gradient, these parameters of flow velocity are more suitable for scene with reference to use.
Description
Technical field
The present invention relates to a kind of Polluted Soil Polluted Soil of elution recovery technique field more particularly to temperature-controllable elution in situ
Prosthetic device and operating method.
Background technique
For a long time, since China's Economic Development Mode is extensive, the industrial structure and unreasonable, the gross contamination emission of layout
High, some areas soil pollution is serious, constitutes and seriously threatens to agricultural product quality and human health.In April, 2014
" national Soil Pollution Investigation bulletin " display of publication on the 17th, national soil environment situation totally allow of no optimist, partly
Area's soil pollution is heavier, and arable soil environmental quality causes anxiety, industry and mining discarded ground soil environment outstanding problem.National soil is total
Exceeding standard rate is 16.1%, and exceeded digit of inorganic pollution accounts for the 82.8% of all exceeded points.
The on-site parameters that the infiltration coefficient and hydraulic gradient of live soil need when being in-situ treatment are carried out real using peristaltic pump
The infiltration coefficient and hydraulic gradient for being not easy to determine Polluted Soil are tested, experiment conclusion is dfficult to apply in Practical Project.Therefore compel to be essential
Seek the effective measures of Polluted Soil improvement.
Summary of the invention
The purpose of the present invention is overcoming deficiency in the prior art, dress is repaired in the Polluted Soil elution for providing a kind of temperature-controllable
It sets and operating method, solves and carry out experiment using peristaltic pump and be not easy to determine the infiltration coefficient and hydraulic gradient of Polluted Soil, experiment
Conclusion is dfficult to apply to the problems in Practical Project.
The Polluted Soil of this temperature-controllable elutes prosthetic device, including constant pressure bottle, adjustable height tripod, elution column and
Leacheate collection vessel；
The body top surface of constant pressure bottle is provided with liquid injection port, and is furnished with sealing-plug；Body top surface is separately provided with aperture and fixation is oriented
The escape pipe extended in bottle, escape pipe extend close to bottom of bottle face；Water outlet, outlet are equipped in constant pressure bottle wall at inner bottom surface
Pipe lowest point is lower than water outlet lowest point；Flexible heater plate is wrapped up on the outside of constant pressure bottle and temperature controller is connected by conducting wire；
Adjustable height tripod is equipped with below constant pressure bottle, it includes support board, nut and branch that height tripod, which is adjusted,
Foot, stabilizer blade upper end is equipped with nut and is screwed into the aperture of support board；
Eluting column includes elution column liquid outlet branch pipe, elution column filling section and elution column inlet branch pipe；Constant pressure bottle goes out
The mouth of a river is connect with three way type pipe fitting by the first PVC hose, and three way type pipe fitting and elution column inlet branch pipe pass through second
PVC hose connection, the second PVC hose are equipped with tongs；Elution column loads section and elution column liquid in-out mouth branch pipe passes through flange
It connects, PVC sealing gasket is laid between flange；It elutes column to load for pollution soil layer in the middle part of section, pollution soil layer upper and lower side is thick permeable
Rock layers, elution column load section side wall and are uniformly coated with vaseline；It elutes and is equipped with hollow perspex layer on the outside of column filling section, in
Dead level is filled the water and is sealed by reserved aperture；Flexible heater plate is wrapped up on the outside of perspex layer and temperature control is connected by conducting wire
Device；Elution column liquid outlet branch pipe is connect by third PVC hose with leacheate collection vessel.
As preferred: the body of constant pressure bottle is cylindrical structure.
As preferred: stabilizer blade has screw thread perpendicular to above ground portion, and unthreaded portion and ground are in 45° angle.
As preferred: the junction of PVC hose is wound using adhesive waterproof tape.
As preferred: wherein two connectors of three way type pipe fitting are separately connected the first PVC hose and the second PVC hose, separately
Sealing-plug is arranged in one connector.
As preferred: blind flange being arranged at elution column inlet branch pipe, stabilizer blade is arranged in flange, and elution column loads section and leaching
It washes column inlet branch pipe and passes through flanged joint, be laid with the 2nd PVC sealing gasket between flange, and be bolted flange；Elution
Column liquid outlet branch pipe and elution column load section and pass through flanged joint, the first PVC sealing gasket are laid between flange, and solid by bolt
Determine flange.
As preferred: leacheate collection vessel is container with a lid, is provided among lid convenient for the small of PVC hose entrance
Hole.
The operating method of the Polluted Soil elution prosthetic device of this temperature-controllable, includes the following steps:
1) before elution column loads section filling pollution soil sample, side wall uniformly smears one layer of vaseline；Section is loaded in elution column
The one hollow perspex layer of circle of outside setting, filled the water by reserved aperture to hollow layer, and seal；Before soil sample heating first
Flexible heater plate is wrapped up on the outside of water-bearing layer, and temperature controller is connected by conducting wire and controls temperature；Temperature control device by heat sensor with
The heating to eluent is realized in the connection of constant pressure bottle, while temperature control device can connect elution column and load the outer wall realization of section to earth pillar body
Heating；Temperature range is 10~60 DEG C；
2) when in use, it is divided into normal elution state, supplement elution liquid status and adjusts flow rate regime；Flow velocity is by constant pressure
The height of bottle determines that range is 2.1 × 10-3~1.7 × 10-2Between m/s；
3) under normal elution state, the leacheate in constant pressure bottle enters elution column inlet branch pipe by PVC hose,
Leacheate enters elution column from elution column inlet branch pipe and loads section, first passes around the permeable rock layer in elution column filling section,
Then leacheate sufficiently elutes it even into pollution soil layer, after the completion of elution, is laid on pollution soil layer top
Permeable rock layer enters elution column liquid outlet branch pipe for filtering, by the leacheate of the permeable rock layer, by third PVC hose into
Enter in leacheate collection vessel；
4) in the case where supplement elutes liquid status, the second PVC hose first is clamped with tongs, then supplement and drench to constant pressure bottle inlet
Washing lotion clogs sealing-plug；The sealing-plug on three way type pipe fitting is opened, leacheate is released, observes escape pipe in constant pressure bottle at this time
Liquid level, clog the sealing-plug of three way type pipe fitting when liquid level drops to escape pipe lowest point, open tongs, continue
Elution；
5) in the case where adjusting flow rate regime, when needing to change leacheate and flowing through the flow velocity of earth pillar, pass through and adjust adjustable height
The position of the nut on tripod is spent, and then has adjusted the height of constant pressure bottle, to change head size.
The beneficial effects of the present invention are:
1, the present apparatus provides constant flow velocity by having made constant pressure bottle with the constant pressure principle of Markov bottle for experiment,
Constant pressure bottle structure is simply easy to manufacture, while considering pressure head, can explicitly obtain infiltration coefficient, hydraulic gradient, flow velocity this
A little parameters are more suitable for scene with reference to use.
2, the present apparatus loads in elution column and is equipped with the aqueous perspex layer of a circle on the outside of section, and it is straight to solve flexible heater plate
It connects and is wrapped on the outside of elution column filling section, the big problem of each section soil moisture difference.Temperature control device is connected on the outside of constant pressure bottle,
Convenient for the temperature of Non-leaching agent and the soil body, improves soil body permeance property and improve the efficiency that elution is repaired.Before loading soil sample,
Elution column side wall has uniformly smeared one layer of vaseline, before permeable rock layer is put into, puts on one layer of latex film on the outside, solves leaching
The problem of washing lotion and the soil body are unable to fully haptoreaction, and leacheate is preferentially flowed out from side wall.Connection elution column inlet branch pipe with
The PVC hose of constant pressure bottle is equipped with three way type pipe fitting, and the flow velocity for solving the constant pressure bottle water outlet when supplementing leacheate occurs
Acute variation and the problem of cause experimental error.It is using flange that elution column, which loads section and inlet branch pipe and liquid outlet branch pipe all,
It connects, PVC sealing gasket is laid between flange, be bolted flange, guarantee that entire elution column is in sealing state, filled section
The soil body solves the problems, such as that the soil body floats with water flow up and down by steady pressure.
3, leacheate is flowed out from earth pillar bottom end injection top, solves in lessivation leacheate easily preferentially from side wall stream
It is dynamic, the problem of can not being come into full contact with the soil body.And leacheate and the soil body are heated, improve the infiltration of the soil body
Property, and the chemical reaction of certain eluents and pollutant can be made to accelerate thus more effectively that pollutant is clear from the soil body
It removes, makes to elute remediation efficiency maximization.Improved elution column Quick-detachable cleaning, soil sample can completely be taken out for dividing after processing
Analysis.
4, elution recovery technique of the invention can dystopy or in-situ immobilization Polluted Soil, heavy metal and organic dirt can be handled simultaneously
Contaminate object, the soil body after reparation can safe utilization again, be with a wide range of applications.
5, the present invention intends the field repair in laboratory simulation Polluted Soil, tests simulation in advance using small-size laboratory, can
With the effect that the practical elution in basic parameter prediction scene obtained according to laboratory is repaired, to be Polluted Soil body field repair work
Offer reference frame is provided.
6, present invention elution efficiency compared with tradition pollutes soil body elution device is high, and structure is simple, and analog elutes in situ
Polluted Soil is repaired, and can be applied to the pollution soil body of low-permeability.
Detailed description of the invention
Fig. 1 is that the Polluted Soil of temperature-controllable of the present invention elutes the structural schematic diagram of prosthetic device；
Fig. 2 is elution column the schematic diagram of the section structure.
Description of symbols: constant pressure bottle 1, escape pipe 2, sealing-plug 3, water outlet 4, adjustable height tripod 5, branch are held round
Plate 6, nut 7, stabilizer blade 8, the first PVC hose 9A, the second PVC hose 9B, third PVC hose 9C, three way type pipe fitting 10, sealing
Folder 11, elution column 12, elution column liquid outlet branch pipe 13A, elution column inlet branch pipe 13B, the first PVC sealing gasket 14A, second
PVC sealing gasket 14B, elution column load section 15, perspex layer 16, flexible heater plate 17A, temperature controller 17B, conducting wire 17C, all
Intellectual circle 18, pollution soil layer 19, permeable rock layer 20, leacheate collection vessel 21.
Specific embodiment
The present invention is described further below with reference to embodiment.The explanation of following embodiments is merely used to help understand this
Invention.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, also
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection scope of the claims in the present invention
It is interior.
The Polluted Soil of the temperature-controllable elutes prosthetic device, can elute in situ recovery technique in laboratory simulation, can
Reliable technical parameter is provided for field repair contaminated site.The Polluted Soil of the temperature-controllable elutes prosthetic device, including perseverance
Pressure bottle 1, adjustable height tripod 5, elution column 12, leacheate collection vessel 21.
Elution column 12 includes: elution column liquid outlet branch pipe 13A, elution column filling section 15, elution column inlet from top to bottom
Branch pipe 13B.
Constant pressure bottle 1 is made with Markov bottle principle, and body is cylinder, and body top surface is provided with 3cm liquid injection port, equipped with close
Blocking 3, top surface are separately provided with 6mm aperture, and opening is fixed with the escape pipe extended into bottle 2, escape pipe 2 outer diameter 6mm, interior
Diameter 3mm, the escape pipe 2 extend at the 1cm of bottom of bottle face, and water outlet 4 is arranged at inner bottom surface 2cm on 1 wall of constant pressure bottle,
4 outer diameter 3mm of water outlet, internal diameter 2mm, 2 lowest point of escape pipe should be lower than 4 lowest point of water outlet, avoid leacheate liquid level lower than out
It can also continue to flow out from water outlet 4 when tracheae 2, the leacheate speed flowed out at this time is not constant flow rate, influences experimental result
Reliability.Flexible heater plate 17A is wrapped up on the outside of constant pressure bottle 1, and temperature is controlled by conducting wire 17C connection temperature controller 17B.
Adjustable height tripod 5 includes: support board 6, nut 7, stabilizer blade 8, and stabilizer blade 8 has spiral shell perpendicular to above ground portion
Line, unthreaded portion and ground are in 45° angle, and 8 upper end of stabilizer blade is screwed into nut 7, and stabilizer blade 8 is screwed into branch with that end of nut 7 and is held round
Three apertures of plate 6.
Constant pressure bottle 1 is placed on adjustable height tripod 5, and elution column 12 and the water outlet 4 of constant pressure bottle 1 are soft by PVC
Pipe connection, wherein water outlet 4 is connect with three way type pipe fitting 10 by the first PVC hose 9A, three way type pipe fitting 10 and elution
By the second PVC hose 9B connection, junction is wound with adhesive waterproof tape, prevents from leaking column inlet branch pipe 13B.Three way type pipe connects
First 10 wherein two connectors are separately connected PVC hose, and sealing-plug is arranged in another connector.When in normal elution, three way type pipe is connect
First 10 sealing-plug is in sealing state；When requiring supplementation with leacheate, the second PVC hose 9B first is clamped with tongs 11, then
Leacheate is injected to 1 inlet of constant pressure bottle, clogs sealing-plug.The sealing-plug on three way type pipe fitting 10 is opened, leacheate is released,
The liquid level for observing escape pipe 2 in constant pressure bottle 1 at this time, clogs sealing-plug when liquid level drops to 2 lowest point of escape pipe, opens sealing
Folder 11, continues to elute.This method avoid 4 flow velocitys of water outlet of the constant pressure bottle 1 when supplementing leacheate, and acute variation occurs
And cause experimental error.It elutes column inlet branch pipe 13B and blind flange is set, stabilizer blade is set in flange, elution column 12 is facilitated to pacify
It is placed on experiment porch, elution column loads section 15 and elution column inlet branch pipe 13B uses flanged joint, is laid with second between flange
PVC sealing gasket 14B, is bolted flange, guarantees that entire elution column 12 be in sealing state, the filled section soil body it is upper and lower by
To steady pressure, the compactness for polluting soil layer 19 will not change, the elution in situ of simulating pollution soil.Column is eluted to load in section 15
Diameter 5cm, whole long 7cm, middle part are 5cm pollution soil layers 19, and pollution 19 upper and lower side of soil layer is 1cm thickness permeable rock layer 20, is being loaded
Before soil sample, side wall uniformly smears one layer of vaseline 18.It elutes column liquid outlet branch pipe 13A and elution column is loaded section 15 and connected using flange
It connects, the first PVC sealing gasket 14A is laid between flange, is bolted flange.Elute column liquid outlet branch pipe 13A connection third
PVC hose 9C, junction are wound with adhesive waterproof tape, prevent from leaking.Third PVC hose 9C is passed into leacheate collection vessel 21,
Leacheate collection vessel 21 is container with a lid, and the aperture entered convenient for PVC hose is opened among lid, to reduce experiment
Middle leacheate because elute the time it is longer due to caused by volatilization loss.
The one hollow perspex layer 16 of circle of outside setting of section 15 is loaded in elution column, by reserved aperture to hollow
Layer water filling, and seal.Flexible heater plate 17A is first wrapped up on the outside of water-bearing layer before soil sample heating, passes through conducting wire 17C connection temperature controller
17B controls temperature.Temperature control device connect the heating realized to eluent, while temperature control device with constant pressure bottle 1 by heat sensor
Elution column can be connected and load heating of the outer wall realization of section 15 to earth pillar body.Present apparatus application can be made by adjusting temperature by heating
In the low soil body of permeability, and improve the remediation efficiency of eluent.It is loaded in elution column and increases aqueous barrier, energy on the outside of section 15
The effect for playing heating water bath, is heated evenly soil sample integrally, and outer wall connects temperature control device, easy to operate, improves experiment knot
The reliability of fruit.
Before elution column loads the filling pollution soil sample of section 15, side wall uniformly smears one layer of vaseline 18, is avoided that leacheate
Directly occur contacting the generation of non-uniform phenomenon with the soil body by side wall outflow.It can be pressed into from contaminated site and adopt in elution column 12
What is taken is undisturbed pollution soil sample, and scene pollution soil sample can also be simulated taking human as preparation and is loaded as pollution soil layer 19.
The temperature of the Polluted Soil elution prosthetic device of the temperature-controllable is that by flexible heater plate 17A, temperature controller 17B and have
What machine glassy layer 16 codetermined, range is usually 10~60 DEG C.The device when in use, is divided into normal elution state, supplement
It elutes liquid status and adjusts flow rate regime.Its flow velocity is to determine that range is 2.1 by the height (i.e. head size) of constant pressure bottle 1
×10-3~1.7 × 10-2Between m/s.Under normal elution state, the leacheate in constant pressure bottle 1 enters leaching by PVC hose
Column inlet branch pipe 13B is washed, leacheate enters elution column from elution column inlet branch pipe 13B and loads section 15, first passes around leaching
The permeable rock layer 20 in column filling section 15 is washed, permeable rock layer 20 can make leacheate be evenly distributed, and enhancing elution effect is then drenched
Washing lotion sufficiently elutes it even into pollution soil layer 19, after the completion of elution, to avoid elution column liquid outlet branch pipe
13A is leached the soil clogging that liquid is mingled with, and is laid with permeable rock layer 20 for filtering on pollution 19 top of soil layer, passes through the permeable stone
The leacheate of layer 20 enters elution column liquid outlet branch pipe 13A, is entered in leacheate collection vessel 21 by third PVC hose 9C.
Under supplement elution liquid status, since the elution time is more than 2d, it may appear that the situation of leacheate deficiency first clamps the with tongs 11
Two PVC hose 9B, then leacheate is supplemented to 1 inlet of constant pressure bottle, clog sealing-plug；Open the sealing on three way type pipe fitting 10
Plug releases leacheate, observes the liquid level of escape pipe 2 in constant pressure bottle 1 at this time, clogs when liquid level drops to 2 lowest point of escape pipe
The sealing-plug of three way type pipe fitting 10 opens tongs 11, continues to elute.It adjusts under flow rate regime, is drenched when needing to change
It, can be by adjusting the position of the nut 7 on adjustable height tripod 5 when washing lotion flows through the flow velocity of earth pillar, and then have adjusted perseverance
The height of pressure bottle 1, to change head size.
In the elution reparative experiment of Polluted Soil, experimental period is long, high to the sealing requirements of elution column.For prevent the soil body with
Water flow is floated, and soil body filled section up and down should be by steady pressure.For the reliability for guaranteeing experimental result, leacheate and soil should fill
Divide haptoreaction, needs that leacheate is avoided preferentially to flow out from side wall.
Claims (8)
1. a kind of Polluted Soil of temperature-controllable elutes prosthetic device, it is characterised in that: including constant pressure bottle (1), adjustable height three
Foot prop (5), elution column (12) and leacheate collection vessel (21)；
The body top surface of constant pressure bottle (1) is provided with liquid injection port, and is furnished with sealing-plug (3)；Body top surface is separately provided with aperture and is fixed with
The escape pipe (2) extended into bottle, escape pipe (2) extend close to bottom of bottle face；It is equipped at inner bottom surface on constant pressure bottle (1) wall
Water outlet (4), escape pipe (2) lowest point are lower than water outlet (4) lowest point；Flexible heater plate (17A) is wrapped up on the outside of constant pressure bottle (1)
And pass through conducting wire (17C) connection temperature controller (17B)；
Be equipped with below constant pressure bottle (1) adjustable height tripod (5), adjustable height tripod (5) include support board (6),
Nut (7) and stabilizer blade (8), stabilizer blade (8) upper end is equipped with nut (7) and is screwed into the aperture of support board (6)；
Eluting column (12) includes elution column liquid outlet branch pipe (13A), elution column filling section (15) and elution column inlet branch pipe
(13B)；The water outlet (4) of constant pressure bottle (1) is connect with three way type pipe fitting (10) by the first PVC hose (9A), three way type pipe
Connector (10) is connect with elution column inlet branch pipe (13B) by the second PVC hose (9B), and the second PVC hose (9B) is equipped with
Tongs (11)；It elutes column and loads section (15) and elute column liquid in-out mouth branch pipe and pass through flanged joint, PVC sealing is laid between flange
Liner；It elutes column to load for pollution soil layer (19) in the middle part of section (15), pollution soil layer (19) upper and lower side is thick permeable rock layer (20), leaching
It washes column filling section (15) side wall and is uniformly coated with vaseline (18)；Column is eluted to load on the outside of section (15) equipped with hollow organic glass
Layer (16), hollow layer are filled the water and are sealed by reserved aperture；Flexible heater plate (17A) is wrapped up simultaneously on the outside of perspex layer (16)
Temperature controller (17B) is connected by conducting wire (17C)；It elutes column liquid outlet branch pipe (13A) and passes through third PVC hose (9C) and leacheate
Collection vessel (21) connection.
2. the Polluted Soil of temperature-controllable according to claim 1 elutes prosthetic device, it is characterised in that: constant pressure bottle (1)
Body is cylindrical structure.
3. the Polluted Soil of temperature-controllable according to claim 1 elutes prosthetic device, it is characterised in that: stabilizer blade (8) is vertical
Screw thread is had in above ground portion, unthreaded portion and ground are in 45° angle.
4. the Polluted Soil of temperature-controllable according to claim 1 elutes prosthetic device, it is characterised in that: the company of PVC hose
Place is met to wind using adhesive waterproof tape.
5. the Polluted Soil of temperature-controllable according to claim 1 elutes prosthetic device, it is characterised in that: three way type pipe fitting
(10) wherein two connectors are separately connected the first PVC hose (9A) and the second PVC hose (9B), and sealing-plug is arranged in another connector.
6. the Polluted Soil of temperature-controllable according to claim 1 elutes prosthetic device, it is characterised in that: elution column inlet
Blind flange is set at branch pipe (13B), and stabilizer blade is arranged in flange, and elution column loads section (15) and elution column inlet branch pipe (13B)
By flanged joint, it is laid with the 2nd PVC sealing gasket (14B) between flange, and be bolted flange；Elute column liquid outlet branch
It manages (13A) and elution column loads section (15) and passes through flanged joint, be laid with the first PVC sealing gasket (14A) between flange, and pass through spiral shell
Bolt mounting flange.
7. the Polluted Soil of temperature-controllable according to claim 1 elutes prosthetic device, it is characterised in that: leacheate, which is collected, to be held
Device (21) is container with a lid, and the aperture entered convenient for PVC hose is provided among lid.
8. a kind of operating method of the Polluted Soil elution prosthetic device of temperature-controllable as described in claim 1, which is characterized in that
Include the following steps:
1) before elution column loads section (15) filling pollution soil sample, side wall uniformly smears one layer of vaseline (18)；It is filled out in elution column
The hollow perspex layer (16) of one circle of outside setting of section (15) is filled, is filled the water by reserved aperture to hollow layer, and seal；
Flexible heater plate (17A) first is wrapped up on the outside of water-bearing layer before soil sample heating, passes through conducting wire (17C) connection temperature controller (17B) control
Temperature；Temperature control device connect the heating realized to eluent with constant pressure bottle (1) by heat sensor, while temperature control device can connect
It elutes column and loads heating of the outer wall realization of section (15) to earth pillar body；Temperature range is 10~60 DEG C；
2) when in use, it is divided into normal elution state, supplement elution liquid status and adjusts flow rate regime；Flow velocity is by constant pressure bottle
(1) height determines that range is 2.1 × 10-3~1.7 × 10-2Between m/s；
3) under normal elution state, the leacheate in constant pressure bottle (1) enters elution column inlet branch pipe by PVC hose
(13B), leacheate enter elution column from elution column inlet branch pipe (13B) and load section (15), first pass around elution column and load
Permeable rock layer (20) in section (15), then leacheate sufficiently elutes it even into pollution soil layer (19), drenches
After the completion of washing, permeable rock layer (20) are laid with for filtering on pollution soil layer (19) top, pass through the elution of the permeable rock layer (20)
Liquid enters elution column liquid outlet branch pipe (13A), is entered in leacheate collection vessel (21) by third PVC hose (9C)；
4) it in the case where supplement elutes liquid status, is first clamped the second PVC hose (9B) with tongs (11), then to constant pressure bottle (1) feed liquor
Mouth supplement leacheate, clogs sealing-plug；The sealing-plug on three way type pipe fitting (10) is opened, leacheate is released, observation is permanent at this time
The liquid level of pressure bottle (1) interior escape pipe (2) clogs three way type pipe fitting (10) when liquid level drops to escape pipe (2) lowest point
Sealing-plug is opened tongs (11), continues to elute；
5) in the case where adjusting flow rate regime, when needing to change leacheate and flowing through the flow velocity of earth pillar, pass through and adjust adjustable height three
The position of nut (7) on foot prop (5), and then the height of constant pressure bottle (1) is had adjusted, to change head size.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811339427.9A CN109226224A (en) | 2018-11-12 | 2018-11-12 | A kind of the Polluted Soil elution prosthetic device and operating method of temperature-controllable |
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|---|---|---|---|
| CN201811339427.9A CN109226224A (en) | 2018-11-12 | 2018-11-12 | A kind of the Polluted Soil elution prosthetic device and operating method of temperature-controllable |
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| CN109226224A true CN109226224A (en) | 2019-01-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208277A (en) * | 2020-01-16 | 2020-05-29 | 北京科技大学 | Coupling up-flow type device for adsorbing heavy metal in soil |
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Application publication date: 20190118 |