CN110000203A - A kind of experimental rig and test method based on electric restoring polluted soil - Google Patents
A kind of experimental rig and test method based on electric restoring polluted soil Download PDFInfo
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- CN110000203A CN110000203A CN201910278876.5A CN201910278876A CN110000203A CN 110000203 A CN110000203 A CN 110000203A CN 201910278876 A CN201910278876 A CN 201910278876A CN 110000203 A CN110000203 A CN 110000203A
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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
- B09C1/08—Reclamation of contaminated soil chemically
- B09C1/085—Reclamation of contaminated soil chemically electrochemically, e.g. by electrokinetics
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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Abstract
The invention discloses a kind of experimental rig and test method based on electric restoring polluted soil；The experimental rig includes system I and system II；The system I includes cathode chamber, anode chamber, soil chamber, anion-exchange membrane and cation-exchange membrane；The system II is fixed by cathode plate with cathode chamber top cover, anode plate and anode chamber's top cover are fixed, and is connected and composed by electric wire and DC power supply；Cathode plate and anode plate in system I are put into cathode chamber and anode chamber；System I and system II composition experimental rig is whole；The test method of the experimental rig includes design device, configuration Polluted Soil, repairing test, adjusts single influence factor and repeat repairing test；The experimental rig is small in size, be easily portable and space utilization degree is high, can simulate various working, improve test efficiency.
Description
Technical field
The invention belongs to environmental geotechnical technical fields, and in particular to a kind of test based on electric restoring polluted soil
Device and test method.
Background technique
With industry, the increase of the aggravation of municipal pollution and agrochemicals type, quantity, soil pollution is increasingly tight
Weight.If not reinforcing contaminated site environmental survey, assessment and administering to repair, remaining pollutant will affect city and Ren Ju in soil
Environment, and enter human body by route of exposure such as contact, breathings, endanger health of human body.So contaminated soil remediation provides soil
Source protection and sustainable development are of great significance.
A large amount of investigation show that China's soil pollution is serious, current soil restoring technology have respective advantage and
The deficiency of itself.And most of China's soil is had effect which has limited many recovery techniques by various heavy combined pollution
With increasing the difficulty of soil remediation.Technology of Electrodynamics Renovation is to insert electrodes into contaminated soil, by applying low pressure
Direct current electric forming electric field, using in soil aperture water or additional electrolyte solution as conducting medium, make it is water-soluble and
It is adsorbed on the pollutant on soil particle surface layer, under the various electro kinetic effects that electric field generates, according to electrically charged difference
And moved to different electrode directions, reaching the pollutant near electrode can be extracted by precipitating, plating or ion exchange
The methods of be removed, to achieve the purpose that reparation.Electric repairing technique is to organic and inorganic and combined pollution soil, sludge
Preferable repairing effect can be achieved with deposit, and to the very intractable sticky Polluted Soil of most of based technique for in-situ remediation
Earth has preferable removal effect, which has a wide range of application, and cost is relatively low, and remediation efficiency is fast, especially to point source dirt
Dye and suddenly accident etc. are with good application prospect.Therefore, carry out electro reclamation heavy-metal composite pollution soil
Research be of great significance.
Although electric repairing technique makes great progress, still it is badly in need of solving there are many problem, such as improves electricity
Dynamic remediation efficiency reduces electro reclamation cost, reduces and cause secondary pollution etc. to environment, this just needs our further systems
Research still lacks the device of contaminated soil heterotopic electro reclamation at present.
Therefore, a kind of experimental rig of repairing polluted soil that can overcome the above problem is needed in the prior art.
Summary of the invention
To realize the present invention purpose and the technical solution adopted is that a kind of such, examination based on electric restoring polluted soil
Experiment device, including system I and system II.
The system I includes cathode chamber, soil chamber, anode chamber, anion-exchange membrane and cation-exchange membrane.
The cathode chamber is that upper end is open, the container of lower end closed.One side wall of the cathode chamber is porous plate I.
The soil chamber is that upper end is open, the container of lower end closed.The two sides of the soil chamber are porous plate II.
The porous plate I of the cathode chamber is opposite with a porous plate II of the soil chamber, the porous plate I with it is described
The cation-exchange membrane is placed between porous plate II, the cathode chamber is docked in the soil chamber.
The anode chamber is that upper end is open, the container of lower end closed.One side wall of the anode chamber is porous plate III.
The porous plate III of the anode chamber and another porous plate II of the soil chamber are opposite, in the porous plate III
The cation-exchange membrane is placed between the porous plate II, the cathode chamber is docked in the soil chamber.
The system II includes cathode plate, anode plate, cathode chamber top cover, anode chamber's top cover, DC power supply and electric wire.
The cathode plate is mounted on the cathode chamber top cover.The anode plate is mounted on anode chamber's top cover.
The cathode plate and the anode plate pass through the electric wire and connect with the DC power supply.
When work, it is filled with the catholyte of various concentration in the cathode chamber, the sun of various concentration is filled in the anode chamber
Contaminated soil to be repaired is added in the soil chamber in pole liquid.The cathode plate is placed in the cathode chamber, passes through cathode ceiling
Lid blocks the opening of cathode chamber.The anode plate is placed in the anode chamber, passes through anode chamber's top cover opening anode chamber
Mouth blocks.The DC power supply is connected, is repaired.
Further, experimental rig further includes data collection system.The cathode plate connects the DC power supply with anode plate
Afterwards, the real-time change and/or monitoring soil of the voltage and current between the data collection system monitoring cathode plate and anode plate
The real-time change of the voltage and current of indoor section soil section.
Further, the junction at the position adjacent thereto porous plate I protrudes horizontally up outer crimping I.It is set on the outer crimping I
There are several screw holes.
The junction at the position adjacent thereto porous plate II protrudes horizontally up outer crimping II.If the outer crimping II is equipped with
Dry screw hole.
The junction at the position adjacent thereto porous plate III protrudes horizontally up outer crimping III.It is set on the outer crimping III
There are several screw holes.
U-shaped leather packing is provided on the outer crimping I, outer crimping II and outer crimping III.
Further, the cathode chamber, soil chamber and the material of anode chamber are organic glass.
Further, the porous plate I, porous plate II and porous plate III are the plate of densely covered cavernous structure.
Further, the end connecting with the electric wire is provided on the cathode plate and anode plate.
Further, the cathode chamber, soil chamber and anode chamber are modularized design.
The cathode plate, anode plate, cathode chamber top cover and anode chamber's top cover are modularized design.
The invention further relates to a kind of test methods of experimental rig based on electric restoring polluted soil, including following step
It is rapid:
1) cathode chamber, soil chamber and anode chamber are made, and by cathode chamber, soil chamber, anode chamber, anion exchange
Film, cation-exchange membrane and U-shaped leather packing are assembled into system I.
2) cathode plate, anode plate, cathode chamber top cover, anode chamber's top cover, DC power supply and electric wire are assembled into system
II。
3) step 1)~2 are repeated), several experimental rigs are assembled, if the quantity of experimental provision is X, if controlling in test
The quantity of the single influence factor of system is M, and each single influence factor has N number of gradient, X=M × N.Wherein, M and N be greater than
Integer equal to 1.
4) it after uniformly smearing vaseline in the soil chamber, then puts at two porous plate II inner walls of soil chamber
Upper filter paper.
5) soil altitude scale line is set in the soil chamber, the contaminated soil for regulating pH value and moisture content is uniform
Be put into soil chamber.
6) pressure pump is utilized, catholyte is pumped into the cathode chamber, anolyte is pumped into the anode chamber.
7) cathode plate is placed in the cathode chamber, the anode plate is placed in the anode chamber.
8) DC power supply is opened, electric restoring polluted soil, in repair process, the data collection system are started
It monitors the real-time change of the voltage and current between cathode plate and anode plate and/or monitors the voltage of soil indoor section soil section
With the real-time change of electric current.
9) after contaminated soil remediation specified time, test is completed, and is closed the DC power supply, is layouted and take in the soil chamber
Sample, and the cathode chamber and anode chamber's electrolyte are collected, detect pollutant concentration.
10) different governing factor test samples are designed, step 4)~9 are repeated) carry out electro reclamation test, until needing to examine
Each influence factor considered, which is tested, to be completed.Wherein, the governing factor include initial aqueous rate, cathode plate and anode plate material,
Electrolysis time, power-on voltage, magnetic field strength and auxiliary reagent.
11) to each group experimental data obtained in step 10) carry out interpretation of records, analysis relatively after, obtain each influence because
Element determines its optimum composition method to the affecting laws of electro reclamation heavy metal polluted soil efficiency.
Further, in the step 8), it is intermittently power-on or lasting energization that the DC power supply, which is powered,.
The solution have the advantages that unquestionable, it has the advantage that
1) various factors during the adjustable electro reclamation of the present invention, the contaminated soil for the treatment of region can realize quick height
The reparation of effect.
2) present invention in U-shaped leather packing is pressed from both sides between cathode chamber, anode chamber and soil chamber, make it is sealed around, being capable of guarantee test
Water when progress in electrode solution and soil does not ooze out.
3) the anions and canons exchange membrane in the present invention, which can be avoided, leads to the problem of pH transition inside soil, improve and repair
Efficiency.
4) cathode chamber, anode chamber, soil chamber can replace different sizes according to demand in the present invention.
5) cathode chamber, anode chamber, soil chamber are independent in the present invention, and anions and canons exchange membrane can be replaced at any time.
6) experimental rig of the invention is small in size, be easily portable and space utilization degree is high, can simulate various working, improve
Test efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention；
Fig. 2 is the structural schematic diagram of apparatus of the present invention system I；
Fig. 3 is the structural schematic diagram of apparatus of the present invention system II；
Fig. 4 is cathode chamber, soil chamber and the structural schematic diagram of anode chamber.
In figure: cathode chamber 1, porous plate I101, outer crimping I102, soil chamber 2, porous plate II201, outer crimping II202, sun
Pole room 3, porous plate III301, outer crimping III302, anion-exchange membrane 4, cation-exchange membrane 5, U-shaped leather packing 6, cathode plate 7,
Anode plate 8, cathode chamber top cover 9, anode chamber's top cover 10, DC power supply 11 and electric wire 12.
Specific embodiment
Below with reference to embodiment, the invention will be further described, but should not be construed the above-mentioned subject area of the present invention only
It is limited to following embodiments.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and used
With means, various replacements and change are made, should all include within the scope of the present invention.
Embodiment 1:
Referring to Fig. 1 to Fig. 4, this implementation discloses a kind of experimental rig based on electric restoring polluted soil, including system I
With system II.
The system I includes cathode chamber 1, soil chamber 2, anode chamber 3, anion-exchange membrane 4 and cation-exchange membrane 5.
The cathode chamber 1 is that upper end is open, the container of lower end closed.One side wall of the cathode chamber 1 is porous plate
I101.In the present embodiment, the generally rectangular box of cathode chamber 1, the rectangular box includes bottom plate I and four pieces of side plate I.Described four pieces
Side plate I is successively labeled as the first side plate, the second side plate, third side plate and the 4th side plate.First side plate, the second side plate and
Four side plates are straight side plate I.The third side plate is porous plate I101.The junction at the position adjacent thereto porous plate I101
Protrude horizontally up outer crimping I102.The outer crimping I102 is equipped with several screw holes.U-shaped leather packing is provided on the outer crimping I102
6。
The soil chamber 2 is that upper end is open, the container of lower end closed.The two sides of the soil chamber 2 are porous plate
II201.In the present embodiment, the soil chamber 2 generally rectangular box, the rectangular box includes bottom plate II and four pieces of side plate II.
Four pieces of side plate II are successively labeled as the 5th side plate, the 6th side plate, heptalateral plate and the 8th side plate.6th side plate and
Eight side plates are straight side plate II.5th side plate and heptalateral plate are porous plate II201.Each porous plate II201 and its
The junction of adjacent regions protrudes horizontally up outer crimping II202.The outer crimping II202 is equipped with several screw holes.The outer volume
U-shaped leather packing 6 is provided on the II202 of side.
The outer crimping I102 of the cathode chamber 1 is opposite with the outer crimping II202 of 2 side of soil chamber, and described more
The cation-exchange membrane 5 is placed between orifice plate I101 and the porous plate II201, the cathode chamber 1 and the soil chamber 2 are logical
Cross bolt docking.I.e. cathode chamber 1 and soil chamber 2 successively screw in outer crimping I102 and outer crimping II202 by bolt, so that cathode
Room 1 is closely joined together with soil chamber 2.It is worth noting that being provided on U-shaped leather packing 6 and outer crimping I102 and outer crimping
The corresponding hole of the screw hole of II202 plays the role of leakproof so that U-shaped leather packing 6 fits closely.
The anode chamber 3 is that upper end is open, the container of lower end closed.One side wall of the anode chamber 3 is porous plate
III301.In the present embodiment, the anode chamber 3 generally rectangular box, the rectangular box include bottom plate III and four blocks of side plates
III.Four pieces of side plate III are successively labeled as the 9th side plate, the tenth side plate, the tenth side plate and the 12nd side plate.Described
Nine side plates are porous plate III301.Tenth side plate, the tenth side plate and the 12nd side plate are straight side plate III.It is described more
The junction at the position adjacent thereto orifice plate II I301 protrudes horizontally up outer crimping III302.The outer crimping III302 is equipped with several
Screw hole.U-shaped leather packing 6 is provided on the outer crimping III302.
The outer crimping III302 of the anode chamber 3 is opposite with the outer crimping II202 of 2 other side of soil chamber, and in institute
It states and is placed in the cation-exchange membrane 5 between porous plate III301 and the porous plate II201, the cathode chamber 1 and the soil
It is docked by bolt earth room 2.I.e. cathode chamber 1 and soil chamber 2 successively screw in outer crimping I102 and outer crimping II202 by bolt,
So that cathode chamber 1 is closely connect with soil chamber 2.It is worth noting that being provided on U-shaped leather packing 6 and outer crimping III302 and outer
The corresponding hole of the screw hole of crimping II202 plays the role of leakproof so that U-shaped leather packing 6 fits closely.
In the present embodiment, the size of anion-exchange membrane 4 and cation-exchange membrane 5 uses hollow greater than in system I
Sectional dimension.I.e. the size of anion-exchange membrane 4 and cation-exchange membrane 5 is all larger than porous plate I101, porous plate II201 and more
The size of orifice plate II I301.
The system II includes cathode plate 7, anode plate 8, cathode chamber top cover 9, anode chamber's top cover 10, DC power supply 11 and electricity
Line 12.
The cathode plate 7 is mounted on the cathode chamber top cover 9.The anode plate 8 is mounted on anode chamber's top cover 10
On.To be easy to disassemble, it is respectively provided with a hole on cathode chamber top cover 9 and anode chamber's top cover 10, by the way that cathode plate 7 is inserted into cathode ceiling
The hole of lid 9, anode plate 8 is inserted into the mounting means in the hole of anode chamber's top cover 10, it can be achieved that quick disassembly.
The cathode plate 7 and the anode plate 8 are connect by the electric wire 12 with the DC power supply 11.
When work, it is filled with the catholyte of various concentration in the cathode chamber 1, fills different concentration in the anode chamber 3 and enters
Contaminated soil to be repaired is added in the soil chamber 2 in anolyte.The cathode plate 7 is placed in the cathode chamber 1, the yin
Pole room top cover 9 is covered in 1 upper end of cathode chamber, is blocked the opening of cathode chamber 1 by cathode chamber top cover 9.The anode plate 8 is put
It is placed in the anode chamber 3, anode chamber's top cover 10 is covered in 3 upper end of anode chamber, by anode chamber's top cover 10 by anode
The open of room 3 blocks.The DC power supply 11 is connected, is repaired.
Further, experimental rig further includes data collection system.The cathode plate 7 connects the direct current with anode plate 8
After power supply 11, the real-time change and/or soil of voltage and current between the data collection system monitoring cathode plate 7 and anode plate 8
The real-time change of the voltage and current of 2 inner part soil section of earth room.
Preferably, the cathode chamber 1, soil chamber 2 and the material of anode chamber 3 are organic glass.
Preferably, the porous plate I102, porous plate II202 and porous plate III301 are the plate of densely covered cavernous structure.
Preferably, the end connecting with the electric wire 12 is provided on the cathode plate 7 and anode plate 8.
Preferably, the cathode chamber 1, soil chamber 2 and anode chamber 3 are modularized design.The cathode plate 7, anode plate
8, cathode chamber top cover 9 and anode chamber's top cover 10 are modularized design.Different sizes can be replaced according to demand.
Experimental rig provided in this embodiment based on electric restoring polluted soil, cathode chamber 1, anode chamber 3 and soil chamber 2
Between press from both sides U-shaped leather packing 6, be bolted, make sealed around, it is ensured that test carry out when electrode solution and soil in water it is not permeable
Out, anion-exchange membrane 4 and cation-exchange membrane 5, which can be avoided, leads to the problem of pH transition inside soil, improve remediation efficiency,
Since cathode chamber 1, anode chamber 3 and soil chamber 2 to be independent, anion-exchange membrane 4 and cation-exchange membrane 5 can be with
Shi Genghuan.
Embodiment 2:
Referring to Fig. 1 to Fig. 4, the present embodiment discloses a kind of test side of experimental rig based on electric restoring polluted soil
Method, comprising the following steps:
1) cathode chamber 1, soil chamber 2 and anode chamber 3 are made by design size, wherein cathode chamber 1 and anode chamber 102
Size be 4cm × 6cm × 8cm, the size of soil chamber 2 is 12cm × 6cm × 8cm.By cathode chamber 1, soil chamber 2, anode
Room 3, anion-exchange membrane 4, cation-exchange membrane 5 and U-shaped leather packing 6 are assembled into system I, specifically, in cathode chamber 1 and soil chamber
Put two U-shaped leather packings 6 between 2, be put into cation-exchange membrane 5 among two U-shaped leather packings 6, anode chamber 3 and soil chamber 2 it
Between put two U-shaped leather packings 6, anion-exchange membrane 4 is put among two U-shaped leather packings 6, by cathode chamber 1 and soil chamber 2, anode
Room 3 is fixed with soil chamber 2 with bolt.
2) by the cathode plate 7, anode plate 8, cathode chamber top cover 9, anode chamber's top cover 10, DC power supply 11 and 12 groups of electric wire
Dress is system II, specifically, cathode chamber top cover 9 and cathode plate 7 are linked together, anode chamber's top cover 10 is connect with anode plate 8
Together, cathode plate 7 and anode plate 8 are connect with DC power supply 11 by electric wire 12.
In this embodiment, an experimental rig is only assembled.
3) after uniformly smearing vaseline in the soil chamber 2, then in two porous plate II202 inner walls of soil chamber 2
Put filter paper in place.
4) soil altitude scale line is set in the soil chamber 2, the contaminated soil for regulating pH value and moisture content is equal
Even is put into soil chamber 2.
5) pressure pump is utilized, catholyte is pumped into the cathode chamber 1, anolyte is pumped into the anode chamber 3.
6) cathode plate 7 is placed in the cathode chamber 1, the anode plate 8 is placed in the anode chamber 3.
7) DC power supply 11 is opened, starts electric restoring polluted soil, it is intermittently logical that the DC power supply 11, which is powered,
Electricity or lasting energization, in the present embodiment, using lasting energization.In repair process, the cathode plate 7 is connected with anode plate 8
After the DC power supply 11, the real-time change of voltage and current between the data collection system monitoring cathode plate 7 and anode plate 8
And/or the real-time change of the voltage and current of 2 inner part soil section of soil chamber.
8) after contaminated soil remediation specified time, test is completed, and the DC power supply 11 is closed, in 2 cloth of soil chamber
Point sampling, and 3 electrolyte of the cathode chamber 1 and anode chamber is collected, detect pollutant concentration.
9) different governing factor test samples are designed, step 3)~8 are repeated) carry out electro reclamation test, until needing to examine
Each influence factor considered, which is tested, to be completed.Wherein, the governing factor includes the material of initial aqueous rate, cathode plate 7 and anode plate 8
Material, electrolysis time, power-on voltage, magnetic field strength and auxiliary reagent.
10) interpretation of records is carried out after analysis relatively to each group experimental data obtained in step 9) and obtains each influence factor
To the affecting laws of electro reclamation heavy metal polluted soil efficiency, its optimum composition method is determined.
Embodiment 3:
Referring to Fig. 1 to Fig. 4, the present embodiment discloses a kind of test side of experimental rig based on electric restoring polluted soil
Method, comprising the following steps:
1) cathode chamber 1, soil chamber 2 and anode chamber 3 are made by design size, wherein cathode chamber 1 and anode chamber 102
Size be 4cm × 6cm × 8cm, the size of soil chamber 2 is 12cm × 6cm × 8cm.By cathode chamber 1, soil chamber 2, anode
Room 3, anion-exchange membrane 4, cation-exchange membrane 5 and U-shaped leather packing 6 are assembled into system I, specifically, in cathode chamber 1 and soil chamber
Put two U-shaped leather packings 6 between 2, be put into cation-exchange membrane 5 among two U-shaped leather packings 6, anode chamber 3 and soil chamber 2 it
Between put two U-shaped leather packings 6, anion-exchange membrane 4 is put among two U-shaped leather packings 6, by cathode chamber 1 and soil chamber 2, anode
Room 3 is fixed with soil chamber 2 with bolt.
2) by the cathode plate 7, anode plate 8, cathode chamber top cover 9, anode chamber's top cover 10, DC power supply 11 and 12 groups of electric wire
Dress is system II, specifically, cathode chamber top cover 9 and cathode plate 7 are linked together, anode chamber's top cover 10 is connect with anode plate 8
Together, cathode plate 7 and anode plate 8 are connect with DC power supply 11 by electric wire 12.
3) step 1)~2 are repeated), multiple experimental rigs are assembled, if the quantity of experimental rig is X, if controlled in test
The quantity of single influence factor is M, and each single influence factor has N number of gradient, then the experimental rig quantity needed is X=M
×N.Wherein, X is the integer greater than 1.One experimental rig is used to measure one of gradient of a single influence factor.
4) after uniformly smearing vaseline in the soil chamber 2, then in two porous plate II202 inner walls of soil chamber 2
Put filter paper in place.
5) soil altitude scale line is set in the soil chamber 2, the contaminated soil for regulating pH value and moisture content is equal
Even is put into soil chamber 2.
6) pressure pump is utilized, catholyte is pumped into the cathode chamber 1, anolyte is pumped into the anode chamber 3.
7) cathode plate 7 is placed in the cathode chamber 1, the anode plate 8 is placed in the anode chamber 3.
8) DC power supply 11 is opened, starts electric restoring polluted soil, it is intermittently logical that the DC power supply 11, which is powered,
Electricity or it is lasting be powered, in the present embodiment, using intermittently power-on, energization 12h, power-off 6h, be powered for 24 hours, power-off 12h, be powered
48h, power-off 24 hours, are tested 6 days altogether.In repair process, the cathode plate 7 connects the DC power supply with anode plate 8
After 11, the real-time change and/or soil chamber 2 of voltage and current between the data collection system monitoring cathode plate 7 and anode plate 8
The real-time change of the voltage and current of inner part soil section, in multiple experimental rigs, each channel pair of data collection system
An experimental rig should be monitored.
9) after the 6 day time of contaminated soil remediation, test is completed, and is closed the DC power supply 11, is layouted in the soil chamber 2
Sampling, and 3 electrolyte of the cathode chamber 1 and anode chamber is collected, detect pollutant concentration.
10) different governing factor test samples are designed, step 4)~9 are repeated) carry out electro reclamation test, until needing to examine
Each influence factor considered, which is tested, to be completed.Wherein, the governing factor includes the material of initial aqueous rate, cathode plate 7 and anode plate 8
Material, electrolysis time, power-on voltage, magnetic field strength and auxiliary reagent.
11) to each group experimental data obtained in step 10) carry out interpretation of records, analysis relatively after, obtain each influence because
Element determines its optimum composition method to the affecting laws of electro reclamation heavy metal polluted soil efficiency.
Test method provided by the embodiment can simulate various working, improve test by assembling multiple groups experimental rig
Efficiency.
Claims (9)
1. a kind of experimental rig based on electric restoring polluted soil, it is characterised in that: including the system I and system II；
The system I includes cathode chamber (1), soil chamber (2), anode chamber (3), anion-exchange membrane (4) and cation-exchange membrane
(5)；
The cathode chamber (1) is that upper end is open, the container of lower end closed；One side wall of the cathode chamber (1) is porous plate I
(101)；
The soil chamber (2) is that upper end is open, the container of lower end closed；The two sides of the soil chamber (2) are porous plate II
(201)；
One porous plate II (201) of the porous plate I (101) of the cathode chamber (1) and the soil chamber (2) relatively, described
It is placed between porous plate I (101) and the porous plate II (201) cation-exchange membrane (5), cathode chamber (1) docking
On the soil chamber (2)；
The anode chamber (3) is that upper end is open, the container of lower end closed；One side wall of the anode chamber (3) is porous plate III
(301)；
The porous plate III (301) of the anode chamber (3) and another porous plate II (201) of the soil chamber (2) relatively,
The cation-exchange membrane (5), the cathode chamber are placed between the porous plate III (301) and the porous plate II (201)
(1) soil chamber (2) are docked at；
The system II includes cathode plate (7), anode plate (8), cathode chamber top cover (9), anode chamber's top cover (10), DC power supply
(11) and electric wire (12)；
The cathode plate (7) is mounted on the cathode chamber top cover (9)；The anode plate (8) is mounted on anode chamber's top cover
(10) on；
The cathode plate (7) and the anode plate (8) are connect by the electric wire (12) with the DC power supply (11).
When work, it is filled with the catholyte of various concentration in the cathode chamber (1), is filled with various concentration in the anode chamber (3)
Anolyte, the soil chamber (2) is middle to be added contaminated soil to be repaired；The cathode plate (7) is placed in the cathode chamber (1)
In, the opening of cathode chamber (1) is blocked by cathode chamber top cover (9)；The anode plate (8) is placed in the anode chamber (3)
In, the opening of anode chamber (3) is blocked by anode chamber's top cover (10)；The DC power supply (11) are connected, are repaired.
2. a kind of experimental rig based on electric restoring polluted soil according to claim 2, it is characterised in that: test dress
Setting further includes data collection system；After the cathode plate (7) connects the DC power supply (11) with anode plate (8), the data
Acquisition system monitors the real-time change and/or monitoring soil chamber (2) of the voltage and current between cathode plate (7) and anode plate (8)
The real-time change of the voltage and current of inner part soil section.
3. a kind of experimental rig based on electric restoring polluted soil according to claim 1, it is characterised in that: described more
The junction at orifice plate I (101) position adjacent thereto protrudes horizontally up outer crimping I (102)；The outer crimping I (102) is equipped with several
Screw hole；
The junction at the porous plate II (201) position adjacent thereto protrudes horizontally up outer crimping II (202)；The outer crimping II
(202) several screw holes are equipped with；
The junction at the porous plate III (301) position adjacent thereto protrudes horizontally up outer crimping III (302)；The outer crimping
III (302) is equipped with several screw holes；
U-shaped leather packing (6) are provided on the outer crimping I (102), outer crimping II (202) and outer crimping III (302).
4. a kind of experimental rig based on electric restoring polluted soil according to claim 1, it is characterised in that: the yin
The material of pole room (1), soil chamber (2) and anode chamber (3) is organic glass.
5. a kind of experimental rig based on electric restoring polluted soil according to claim 1, it is characterised in that: described more
Orifice plate I (102), porous plate II (201) and porous plate III (301) are the plate of densely covered cavernous structure.
6. a kind of experimental rig based on electric restoring polluted soil according to claim 1, it is characterised in that: the yin
The end connecting with the electric wire (12) is provided on pole plate (7) and anode plate (8).
7. a kind of experimental rig based on electric restoring polluted soil according to claim 1, it is characterised in that: the yin
Pole room (1), soil chamber (2) and anode chamber (3) are modularized design；
The cathode plate (7), anode plate (8), cathode chamber top cover (9) and anode chamber's top cover (10) are modularized design.
8. a kind of test method based on experimental rig described in claim 2, which comprises the following steps:
1) cathode chamber (1), soil chamber (2) and anode chamber (3) are made, and by cathode chamber (1), soil chamber (2), anode chamber
(3), anion-exchange membrane (4), cation-exchange membrane (5) and U-shaped leather packing (6) are assembled into system I；
2) by the cathode plate (7), anode plate (8), cathode chamber top cover (9), anode chamber's top cover (10), DC power supply (11) and electricity
Line (12) is assembled into system II；
3) step 1)~2 are repeated), several experimental rigs are assembled, if the quantity of experimental provision is X, if controlled in test
The quantity of single influence factor is M, and each single influence factor has N number of gradient, X=M × N；Wherein, M and N be more than or equal to
1 integer；
4) after the interior uniform smearing vaseline of the soil chamber (2), then in two porous plate II (201) of soil chamber (2)
Filter paper is put at wall；
5) soil altitude scale line is set in the soil chamber (2), the contaminated soil for regulating pH value and moisture content is uniform
Be put into soil chamber (2)；
6) pressure pump is utilized, catholyte is pumped into the cathode chamber (1), anolyte is pumped into the anode chamber (3)；
7) cathode plate (7) is placed in the cathode chamber (1), the anode plate (8) is placed in the anode chamber (3)
In；
8) DC power supply (11) is opened, electric restoring polluted soil, in repair process, the data collection system are started
Monitor the real-time change and/or monitoring soil chamber (2) inner part soil of the voltage and current between cathode plate (7) and anode plate (8)
The real-time change of the voltage and current of earth section；
9) after contaminated soil remediation specified time, test is completed, and the DC power supply (11) is closed, in the soil chamber (2) cloth
Point sampling, and the cathode chamber (1) and anode chamber (3) electrolyte are collected, detect pollutant concentration；
10) different governing factor test samples are designed, step 4)~9 are repeated) carry out electro reclamation test, until in need of consideration
Each influence factor test is completed；Wherein, the governing factor includes the material of initial aqueous rate, cathode plate (7) and anode plate (8)
Material, electrolysis time, power-on voltage, magnetic field strength and auxiliary reagent；
11) interpretation of records is carried out after analysis relatively to each group experimental data obtained in step 10) and obtains each influence factor pair
The affecting laws of electro reclamation heavy metal polluted soil efficiency, determine its optimum composition method.
9. a kind of test method of experimental rig based on electric restoring polluted soil according to claim 8, feature
Be: in the step 8), it is intermittently power-on or lasting energization that the DC power supply (11), which is powered,.
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| CN110434168A (en) * | 2019-08-28 | 2019-11-12 | 枣庄学院 | A kind of closed soil electro reclamation experimental tank of volume adjustable |
| CN110614270A (en) * | 2019-08-26 | 2019-12-27 | 北京石油化工学院 | Experimental device and method for repairing organic contaminated soil by coupling resistance heating with microorganisms |
| CN111903268A (en) * | 2020-08-15 | 2020-11-10 | 宁夏农林科学院 | Alkali extraction machine for treating saline-alkali soil |
| CN112264450A (en) * | 2020-09-23 | 2021-01-26 | 天津大学 | Device applied to simulating low-permeability soil electrokinetic remediation and using method |
| CN113385527A (en) * | 2021-05-31 | 2021-09-14 | 山东大学 | Method and device for repairing heavy metal contaminated soil suspension by adopting pulse current |
| CN113909287A (en) * | 2021-10-28 | 2022-01-11 | 徐海艳 | Heavy metal contaminated soil is with electronic prosthetic devices |
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