CN106424117B - Mantoquita strengthens cathode electro reclamation heavy-metal contaminated soil device - Google Patents
Mantoquita strengthens cathode electro reclamation heavy-metal contaminated soil device Download PDFInfo
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- CN106424117B CN106424117B CN201610904178.8A CN201610904178A CN106424117B CN 106424117 B CN106424117 B CN 106424117B CN 201610904178 A CN201610904178 A CN 201610904178A CN 106424117 B CN106424117 B CN 106424117B
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- 239000002689 soil Substances 0.000 title claims abstract description 150
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 58
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 25
- XPFJYKARVSSRHE-UHFFFAOYSA-K trisodium;2-hydroxypropane-1,2,3-tricarboxylate;2-hydroxypropane-1,2,3-tricarboxylic acid Chemical group [Na+].[Na+].[Na+].OC(=O)CC(O)(C(O)=O)CC(O)=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O XPFJYKARVSSRHE-UHFFFAOYSA-K 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000012528 membrane Substances 0.000 claims abstract description 11
- 238000005341 cation exchange Methods 0.000 claims abstract description 10
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 8
- 239000000523 sample Substances 0.000 claims description 46
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 19
- 239000004917 carbon fiber Substances 0.000 claims description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 19
- 229910002804 graphite Inorganic materials 0.000 claims description 18
- 239000010439 graphite Substances 0.000 claims description 18
- 239000003792 electrolyte Substances 0.000 claims description 17
- 230000001939 inductive effect Effects 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 14
- 239000013049 sediment Substances 0.000 claims description 14
- 238000005276 aerator Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 238000005273 aeration Methods 0.000 claims description 8
- 230000014759 maintenance of location Effects 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 229910021592 Copper(II) chloride Inorganic materials 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 230000001376 precipitating effect Effects 0.000 claims description 4
- 239000010802 sludge Substances 0.000 claims description 4
- 150000001879 copper Chemical class 0.000 claims description 3
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 3
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Inorganic materials [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 3
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims description 3
- 239000012266 salt solution Substances 0.000 claims description 3
- 125000002091 cationic group Chemical group 0.000 claims description 2
- 150000001768 cations Chemical class 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 claims 1
- 239000007853 buffer solution Substances 0.000 abstract description 19
- 230000005520 electrodynamics Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000005067 remediation Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229910052793 cadmium Inorganic materials 0.000 description 33
- 229910052725 zinc Inorganic materials 0.000 description 32
- 239000011701 zinc Substances 0.000 description 32
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 17
- 239000000243 solution Substances 0.000 description 17
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 16
- 229910052745 lead Inorganic materials 0.000 description 16
- 238000005259 measurement Methods 0.000 description 16
- 238000000705 flame atomic absorption spectrometry Methods 0.000 description 14
- 239000010949 copper Substances 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 4
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 238000001962 electrophoresis Methods 0.000 description 2
- 230000005130 electrotropism Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000009418 renovation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
It is that soil chamber is provided between cathode chamber and anode chamber that a kind of mantoquita, which strengthens cathode electro reclamation heavy-metal contaminated soil device, cathode chamber, anode chamber, soil chamber and the volumetric ratio of activated carbon fibre room are 3:3:5-50:1, catholyte is mantoquita, anolyte is citric acid-sodium citrate buffer solution, realizes that 36-500 hour is automatically repaired to heavy-metal contaminated soil under the voltage of 5-50 V.The present apparatus promotes the electrokinesis in electrolytic process using mantoquita as catholyte, and electrodynamics is combined with cation-exchange membrane technology, soil sample pH value when electrolysis is kept to improve remediation efficiency by pH controlling and regulating system and anolyte return system in certain acid range.
Description
Technical field
It is specifically a kind of using mantoquita as catholyte the present invention relates to a kind of prosthetic device of heavy metal pollution of soil
Electrodynamics and cation-exchange membrane technology are combined in electromotion repairing technique together by the device of heavy-metal contaminated soil by liquid.
Background technique
The pollution condition of heavy metal-polluted soil is got worse, and crops are planted on contaminated soil, these pollutants can lead to
It crosses food chain effect and enters human body, Japanese cadmium rice event is exactly a distinct example.Therefore, the heavy metal in soil system
Pollution and prevention and treatment are always international difficult point and hot research problem.The recovery technique of heavy metal pollution of soil mainly has at present
Engineering measure, physico-chemical process, chemical repair method and plant restoration method.Engineering measure is mainly to excavate land-fill method
It is main, i.e., so-called soil improvement by importing soil from other places, but this is not a permanent measure, and environmental problem is only endangered area from height and is transferred to less harmful
Area, there is also the negative effects such as land occupation, leakage, pollution surrounding enviroment for landfill method, therefore using less in soil remediation.
Technology of Electrodynamics Renovation is the organic and inorganic pollution that can be effectively removed in soil with it, and is compared
Traditional soil restoring technology has many advantages, such as that at low cost, easy to operate, contact harmful toxic matter is few, does not easily cause secondary pollution,
What is at home and abroad developed in recent years is getting faster, while there are also the Engineering Projects of practical application.Technology of Electrodynamics Renovation
Principle be at contaminated soil both ends plus low-voltage direct electric field, electrodialysis, electromigration and electrophoresis for being generated using electric field etc. are electric
Dynamic effect, make pollutant that is water-soluble or being adsorbed on soil particle surface layer according to respective electrically charged difference and to different
Electrode direction movement, makes enriching pollutants be focused on or be separated in electrode district.Wherein electrodialysis is the hole in soil
Water under electric field action flow from cathode to anode by direction, and electromigration is the opposite electrode direction migration of charged ion electrotropism,
Electrophoresis is the travel motion of charged colloidal particles in soil.However, since electrode reaction can generate respectively greatly in cathode and anode
The OH of amount-And H+, so that the pH value of cathode and anode electrolyte raises and reduces respectively, if without additional limitation, in OH-And H+Phase
PH mutation can be generated by meeting at neutralization, so that heavy metal deposition blocks soil aperture, reduce remediation efficiency.Simultaneously when electrolyte is water
When, electrolysis it is inefficient.In most of electrodynamics experimental provision, all various experiments can be generated because of human factor
Error leads to lower remediation efficiency.
Research finds that electrokinesis can be promoted by adding conductive solution to cathode, using mantoquita as catholyte
When liquid, it can not only promote electrokinesis, moreover it is possible to which consumption electrolysis generates OH-, by can be effective in conjunction with cationic embrane method
Control OH-Into soil, improve soil pH value, improves electromotion repairing technique efficiency.Traditional electrodynamics devices and pH are controlled
It sets up to apply and combine, and remediation efficiency can be improved by effectively removing the attachment on cathode electrode plate.
Summary of the invention
The object of the present invention is to provide a kind of mantoquitas to strengthen cathode electro reclamation heavy-metal contaminated soil device, the device energy
Electrokinesis is enough effectively facilitated, the attachment on cathode electrode plate is removed, improves electromotion repairing technique efficiency.
In order to achieve the above object, measure adopted by the present invention is as follows.
A kind of mantoquita reinforcing cathode electro reclamation heavy-metal contaminated soil device, including anode pH control room, anode dosing
Tank, cathode grug feeding jar, cathode pH control room, anode chamber, soil chamber, carbon fiber room, cation-exchange membrane, cathode chamber, power supply, table
Face mechanical aeration area, cathode pH inducing probes, central tube, precipitating retention area, sediment, pump control line, anode pump, anode electrolysis
Liquid, anolyte inlet tube, anolyte overfall, anode pH inducing probes, anode chemical feed pipe, support frame, support column,
Cathode chemical feed pipe, catholyte overfall, pump control line, catholyte, catholyte inlet tube, cathode pump, sludge
Pump, precipitated liquid discharge pipe, aerator and soil chamber moving track；It is characterized by: in the cathode chamber and the anode chamber
Between be provided with soil chamber and carbon fiber room；The cathode chamber, anode chamber, soil chamber and the volumetric ratio of the Carbon fibe room are 3:
3:5-50:1；The catholyte is mantoquita；The anolyte is citric acid-sodium citrate buffer solution, in 5-50 V
Voltage under 36-500 hours electro reclamations are realized to heavy-metal contaminated soil；Be provided in the cathode chamber first electrode and
Catholyte circulation system, outer upper side are provided with catholyte overfall, and lower section is provided with catholyte inlet tube and company
Connect cathode pump；Second electrode is provided in the anode chamber, bottom is provided with aerator, and outer upper side is provided with anolyte
Overfall, lower section are provided with anolyte inlet tube and jointed anode pump；Support frame, the cathode chamber top are set above device
Cathode grug feeding jar and cathode pH control room are connected by support column；It is controlled above the anode chamber by support column jointed anode pH
Room and anode grug feeding jar.
It between the cathode chamber, anode chamber and soil chamber is separated by porous barrier in the above-mentioned measure taken, it is described
Porous barrier is wrapped up by filter paper；Cation-exchange membrane is wherein added on the partition of carbon fiber room and cathode chamber；The cathode
Electrolyte circulation system is to be communicated with sediment retention area by central tube by surface mechanical aeration area to constitute；The electrode is stone
Electrode ink；The carbon fiber quality of the carbon fiber room is 10-150 g；The citric acid-sodium citrate concentration of the anode chamber is
0.1-6 g/L, the copper salt solution concentration of cathode chamber are 0.02-20 mol/L；The mantoquita is CuCl2、Cu(NO3)2Or
CuSO4；The mounting height of the aerator is lower than the height of catholyte；The mounting height of the central tube is higher than electrode
Highly.
In the above-mentioned measure taken, strengthen the reparation side of cathode electro reclamation heavy-metal contaminated soil device for mantoquita
Method is as follows:
(1) heavy-metal contaminated soil is placed in soil chamber, and carbon fiber is added into carbon fiber room, then hand over cation
It changes film and is attached on hole partition and wrapped up with filter paper；
(2) cathode pH control room and anode pH control room pass through cathode pH inducing probes and anode pH inducing probes induced electricity
The pH value for solving liquid is pumped into catholyte and anolyte by cathode pump and anode pump control, and to the pH of electrolyte into
Row is adjusted；
(3) it is provided with central tube in cathode chamber, by the mechanical aeration of electrolyte surface, electrolyte forms circulation, in
It is sprayed upwards on the inside of heart pipe, washes away the sediment of attachment on the electrode, and retain sediment by sieve in bottom.
Compared with the prior art, a kind of mantoquita reinforcing catholyte electro reclamation heavy metal provided by aforementioned present invention
Contaminated soil device, possessed advantage and good effect are as follows.
Present apparatus the anode chamber and the cathode chamber is provided with pH induction meter, the variation of real-time monitoring the anode chamber and the cathode chamber electrolyte pH, when pH exceeds
When a certain range, the control of anode and cathode pH control room is pumped into electrolyte, maintains anode and cathode electrolyte pH and is in proper range.
The present apparatus is provided with mantoquita as catholyte in conjunction with cation-exchange membrane method, controls soil well
PH value maintains acidic environment, improves the efficiency of electromotion repairing technique heavy-metal contaminated soil.
The present apparatus is provided with Carbon fibe room, can effectively adsorb the gas and heavy metallic salt that electrolysis generates using Carbon fibe
Substance.
The present apparatus is provided with catholyte circulation system, can effectively remove the sediment adhered on electrode plate, mention
High current strength.
Since electrokinesis is there are electromigration, i.e. the opposite electrode direction of charged ion electrotropism migrates the present apparatus,
Cu present in catholyte2+Soil can't be entered, not will cause secondary pollution.
The present apparatus realizes the automatic of continuous processing contaminated soil by auto-adjustment control and soil chamber moving track
Change, reduces human factor bring experimental error.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of specific processing device of the invention.
Fig. 2 is catholyte circulation system structural schematic diagram of the present invention.
Fig. 3 is the schematic perspective view of specific processing device of the invention.
In figure: 1: anode pH control room；2: anode grug feeding jar；3: cathode grug feeding jar；4: cathode pH control room；5: anode
Room；6: soil chamber；7: carbon fiber room；8: cation-exchange membrane；9: cathode chamber；10: power supply；11: surface mechanical aeration area；12:
Cathode pH inducing probes；13: central tube；14: first electrode；15: precipitating retention area；16: sediment；17: pump control line；18:
Anode pump；19: anolyte inlet tube；20: anolyte overfall；21: anode pH inducing probes；22: second electrode；
23: anode chemical feed pipe；24: support frame；25: support column；26: cathode chemical feed pipe；27: catholyte overfall；28: pump control
Line；29: catholyte inlet tube；30: cathode pump；31: sludge pump；32: precipitated liquid discharge pipe；33: aerator.
A and B is soil chamber moving track；C is soil chamber；D is anode chamber；E is cathode chamber；M is electrolysis liquid surface；N is electricity
It solves pendular ring stream and illustrates direction.
Specific embodiment
As described in attached drawing 1, attached drawing 2 and attached drawing 3, implements a kind of mantoquita provided by aforementioned present invention and strengthen that cathode is electronic to be repaired
Multiple heavy-metal contaminated soil device, which includes anode pH control room 1；Anode grug feeding jar 2；Cathode grug feeding jar 3；Cathode pH control
Room 4 processed；Anode chamber 5；Soil chamber 6；Carbon fiber room 7；Cation-exchange membrane 8；Cathode chamber 9；Power supply 10；Surface mechanical aeration area
11；Cathode pH inducing probes 12；Central tube 13；First electrode 14；Precipitating retention area 15；Sediment 16；Pump control line 17；Anode
Pump 18；Anolyte inlet tube 19；Anolyte overfall 20；Anode pH inducing probes 21；Second electrode 22；Anode adds
Pencil 23；Support frame 24；Support column 25；Cathode chemical feed pipe 26；Catholyte overfall 27；Pump control line 28；Catholyte
Liquid inlet tube 29；Cathode pump 30；Sludge pump 31；Precipitated liquid discharge pipe 32 and aerator 33；And it is made of schematic structure.Its
In: A and B indicates soil chamber moving track；C is soil chamber；D is anode chamber；E is cathode chamber；M indicates electrolysis liquid surface；N indicates electricity
Solve pendular ring stream illustrate direction, the specific composition relationship of the schematic structure be soil chamber 6 between cathode chamber 9 and anode chamber 5 into
The volumetric ratio of row electro reclamation, cathode chamber 9 and anode chamber 5 and soil chamber 6 is designed as between 1:1:3-30, the volumetric ratio be through
The range for the reasonable processing soil that experiment obtains is crossed, design catholyte is mantoquita in conjunction with cation-exchange membrane, control
The pH value of soil keeps certain acidic environment；Anolyte is citric acid-sodium citrate buffer solution；Cathode chamber 9, anode chamber 5
It is to be separated by porous barrier, and porous barrier is wrapped up by filter paper between soil chamber 6, and in carbon fiber room 7 and cathode chamber 9
Partition on add cation-exchange membrane 8；Catholyte circulation system is set simultaneously, which exposed by surface machinery
Gas area 11 is connected to sediment by central tube 13 and retains the composition of area 15；Carbon fibe quality therein is 10-150 g, anode chamber 5
Citric acid-sodium citrate concentration is 0.1-6 g/L, and the copper salt solution concentration of cathode chamber 9 is 0.02-20 mol/L, and mantoquita uses
CuCl2、Cu(NO3)2Or CuSO4, electrode uses graphite electrode, to heavy-metal contaminated soil, realization under the voltage of 5-50V
It is automatically repaired within 36-500 hours, to further increase the efficiency of electromotion repairing technique heavy-metal contaminated soil.
In the specific implementation process, the mounting height of the surface Mechanical aerator in catholyte circulation system is set
Higher than catholyte height；The height that the central tube in catholyte circulation system is arranged is higher than electrode height.
Implementation method of the above-mentioned implementing device for restoration of soil polluted by heavy metal is as follows:
(1) heavy-metal contaminated soil is placed in soil chamber 6, then carbon fiber is added into Carbon fibe room 7, it then will be positive
Amberplex 8 is attached on hole partition and is wrapped up with filter paper；
(2) cathode pH control room 4 and anode pH control room 1 pass through cathode pH inducing probes 12 and anode pH inducing probes
The pH value of 21 induction electrolyte is pumped into catholyte and anolyte by cathode pump 30 and 18 control of anode pump, and right
The pH of electrolyte is adjusted；
(3) it is provided with central tube 13 in cathode chamber 9, by the mechanical aeration of electrolyte surface, electrolyte forms a ring
Stream sprays upwards through 13 inside of central tube, washes away the sediment of attachment on the first electrode, and sediment is passed through sieve in bottom
Net retention.
By implementing above-mentioned apparatus, and repair process is carried out to heavy-metal contaminated soil with above-mentioned apparatus, achieves and make us
The specific embodiment of satisfied effect, repair process is as follows.
Embodiment 1
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:3.Soil sample is picked up from
Somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, and anolyte is pH=3
Citric acid-sodium citrate buffer solution, cathode be 1 mol/L CuCl2Conductive solution, experimental period is 400 h, using fire
Heavy metal after the hair measurement of flame Atomic absorption is repaired in soil sample.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows: 72.8%,
70.6%、70.2%。
Embodiment 2
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the CuCl of 3 mol/L2Conductive solution, experimental period are 400 h, are used
Heavy metal after Flame Atomic Absorption Spectrometry hair measurement is repaired in soil sample.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows: 75.1
%、73.6%、72.8 %。
Embodiment 3
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the CuCl of 5 mol/L2Conductive solution, experimental period are 400 h, are used
Heavy metal after Flame Atomic Absorption Spectrometry hair measurement is repaired in soil sample.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows: 78.6
%、75.3 %、74.8 %。
Embodiment 4
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the CuCl of 7 mol/L2Conductive solution, experimental period are 400 h, are used
Heavy metal after Flame Atomic Absorption Spectrometry hair measurement is repaired in soil sample.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows:
80.2%、78.2%、77.3%。
Embodiment 5
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the CuCl of 9 mol/L2Conductive solution, experimental period are 400 h, are used
Heavy metal after Flame Atomic Absorption Spectrometry hair measurement is repaired in soil sample.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows: 81.7
%、79.3 %、78.4 %。
Embodiment 6
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the CuSO of 1 mol/L4Conductive solution, experimental period are 400 h, are used
Heavy metal after Flame Atomic Absorption Spectrometry hair measurement is repaired in soil sample.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows:
71.3%、70.2%、69.8%。
Embodiment 7
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the CuSO of 3 mol/L4Conductive solution, experimental period are 400 h, are used
Heavy metal after Flame Atomic Absorption Spectrometry hair measurement is repaired in soil sample.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows:
74.6%、73.5%、72.1%。
Embodiment 8
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the CuSO of 5 mol/L4Conductive solution, experimental period are 400 h, are used
Heavy metal after Flame Atomic Absorption Spectrometry hair measurement is repaired in soil sample.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows:
77.4%、76.2%、74.9%。
Embodiment 9
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the CuSO of 7 mol/L4Conductive solution, experimental period are 400 h, are used
Heavy metal after Flame Atomic Absorption Spectrometry hair measurement is repaired in soil sample.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows:
79.1%、77.5%、76.4%。
Embodiment 10
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the CuSO of 9 mol/L4Conductive solution, experimental period are 400 h, are used
Heavy metal after Flame Atomic Absorption Spectrometry hair measurement is repaired in soil sample.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows: 81.2
%、79.5 %、78.3 % 。
Embodiment 11
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the Cu (NO of 1 mol/L3)2Conductive solution, experimental period are 400 h, are adopted
The heavy metal after measurement is repaired in soil sample is sent out with Flame Atomic Absorption Spectrometry.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows:
70.5%、69.2%、68.4%。
Embodiment 12
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the Cu (NO of 3 mol/L3)2Conductive solution, experimental period are 400 h, are adopted
The heavy metal after measurement is repaired in soil sample is sent out with Flame Atomic Absorption Spectrometry.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows:
72.1%、70.6%、70.1%。
Embodiment 13
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the Cu (NO of 5 mol/L3)2Conductive solution, experimental period are 400 h, are adopted
The heavy metal after measurement is repaired in soil sample is sent out with Flame Atomic Absorption Spectrometry.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows:
75.3 %、73.1 %、72.2 % 。
Embodiment 14
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the Cu (NO of 7 mol/L3)2Conductive solution, experimental period are 400 h, are adopted
The heavy metal after measurement is repaired in soil sample is sent out with Flame Atomic Absorption Spectrometry.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows:
78.2 %、76.8 %、76.2 % 。
Embodiment 15
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:1:3.Soil sample is adopted
From somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 30 V, anolyte pH
=3 citric acid-sodium citrate buffer solution, cathode are the Cu (NO of 9 mol/L3)2Conductive solution, experimental period are 400 h, are adopted
The heavy metal after measurement is repaired in soil sample is sent out with Flame Atomic Absorption Spectrometry.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows:
80.1 %、78.7 %、77.6 % 。
Embodiment 16
A kind of mantoquita strengthens the device of cathode electro reclamation heavy-metal contaminated soil, and cathode 1 and anode 2 are graphite plate system
Electrode, and respectively with the cathode of power supply 8, anode be connected.The volumetric ratio of yin, yang pole room and soil chamber is 1:3.Soil sample is picked up from
Somewhere contaminated soil, lead, cadmium, zinc concentration are 172,13,650 mg/kg respectively.Voltage is 50 V, and anolyte is pH=3
Citric acid-sodium citrate buffer solution, cathode be 1 mol/L CuCl2Conductive solution, experimental period is 400 h, using fire
Heavy metal after the hair measurement of flame Atomic absorption is repaired in soil sample.The removal rate that Pb, Cd, Zn are obtained after reparation is respectively as follows: 82.3%,
80.7%、80.1%。
Examples detailed above is to enumerate several in concrete application, and the invention is not limited to the specific embodiment party of these types
Case, one of ordinary skilled in the art can make the specific implementation of diversified forms in scope of the presently claimed invention
Scheme, these embodiments belong to protection scope of the present invention.
Claims (9)
1. a kind of mantoquita strengthens cathode electro reclamation heavy-metal contaminated soil device, including anode pH control room (1), anode dosing
Tank (2), cathode grug feeding jar (3), cathode pH control room (4), anode chamber (5), soil chamber (6), carbon fiber room (7), cation are handed over
Change film (8), cathode chamber (9), power supply (10), surface mechanical aeration area (11), cathode pH inducing probes (12), central tube (13),
First electrode (14), precipitating retention area (15), sediment (16), pump control line (17), anode pump (18), anolyte feed liquor
Manage (19), anolyte overfall (20), anode pH inducing probes (21), second electrode (22), anode chemical feed pipe (23), branch
Support (24), support column (25), cathode chemical feed pipe (26), catholyte overfall (27), pump control line (28), catholyte
Liquid inlet tube (29), cathode pump (30), sludge pump (31), precipitated liquid discharge pipe (32), aerator (33), anolyte,
Catholyte and soil chamber moving track；It is characterized by: being arranged between the cathode chamber (9) and the anode chamber (5)
There are soil chamber (6) and carbon fiber room (7)；The cathode chamber (9), anode chamber (5), soil chamber (6) and the carbon fiber room (7)
Volumetric ratio be 3:3:5-50:1；The catholyte is mantoquita；The anolyte is that citric acid-sodium citrate is slow
Fliud flushing realizes 36-500 hours electro reclamations under the voltage of 5-50 V to heavy-metal contaminated soil；In the cathode chamber (9)
It is provided with first electrode (14) and catholyte circulation system, outer upper side is provided with catholyte overfall (27), lower section
It is provided with catholyte inlet tube (29) and connects cathode pump (30)；Second electrode (22), bottom are provided in the anode chamber (5)
Portion is provided with aerator (33), and outer upper side is provided with anolyte overfall (20), and lower section is provided with anolyte feed liquor
Manage (19) and jointed anode pump (18)；Support frame (24) are set above device, pass through support column (25) above the cathode chamber (9)
Connect cathode grug feeding jar (3) and cathode pH control room (4)；Pass through support column (25) jointed anode pH above the anode chamber (5)
Control room (1) and anode grug feeding jar (2).
2. the apparatus according to claim 1, it is characterised in that: the cathode chamber (9), anode chamber (5) and soil chamber (6) it
Between be to be separated by porous barrier, the porous barrier is wrapped up by filter paper；The wherein partition of carbon fiber room (7) and cathode chamber (9)
It is upper to be added with cation-exchange membrane (8).
3. the apparatus according to claim 1, it is characterised in that: the catholyte circulation system is exposed by surface machinery
Gas area (11) is connected to sediment retention area (15) by central tube (13) and constitutes.
4. the apparatus according to claim 1, it is characterised in that: the electrode is graphite electrode.
5. the apparatus according to claim 1, it is characterised in that: the carbon fiber quality of the carbon fiber room (7) is 10-150
g。
6. the apparatus according to claim 1, it is characterised in that: the citric acid-sodium citrate concentration of the anode chamber (5) is
0.1-6 g/L, the copper salt solution concentration of cathode chamber (9) are 0.02-20 mol/L；The mantoquita is CuCl2、Cu(NO3)2Or
CuSO4。
7. the apparatus according to claim 1, it is characterised in that: the mounting height of the aerator (33) is lower than cathode electricity
Solve the height of liquid.
8. the apparatus according to claim 1, it is characterised in that: it is high that the mounting height of the central tube (13) is higher than electrode
Degree.
9. the apparatus according to claim 1, it is characterised in that: the mantoquita strengthens cathode electro reclamation heavy metal polluted soil
The restorative procedure of earth device is as follows:
(1) heavy-metal contaminated soil is placed in soil chamber (6), and carbon fiber is added in carbon fiber room (7), it then will be cationic
Exchange membrane (8) is attached on hole partition and is wrapped up with filter paper；
(2) cathode pH control room (4) and anode pH control room (1) pass through cathode pH inducing probes (12) and anode pH inducing probes
(21) pH value for incuding electrolyte is pumped into catholyte and anode electrolysis by cathode pump (30) and anode pump (18) control
Liquid, and the pH of electrolyte is adjusted；
(3) central tube (13) are provided in cathode chamber (9), by the mechanical aeration of electrolyte surface, electrolyte forms circulation, warp
It is sprayed upwards on the inside of central tube (13), washes away the sediment of attachment on the electrode, and retain sediment by sieve in bottom.
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| CN107597836A (en) * | 2017-10-13 | 2018-01-19 | 中国石油大学(华东) | A kind of experimental method and experimental provision of electrodynamics processing oil-polluted soils |
| CN110434168A (en) * | 2019-08-28 | 2019-11-12 | 枣庄学院 | A kind of closed soil electro reclamation experimental tank of volume adjustable |
| CN110479757B (en) * | 2019-09-02 | 2024-02-09 | 河南工程学院 | Electric restoration device and restoration method for composite heavy metal contaminated soil |
| CN114378111A (en) * | 2021-11-30 | 2022-04-22 | 西安建筑科技大学 | Device and method for removing loess heavy metal pollution based on electrodynamics and mineralogy |
| CN114472495A (en) * | 2022-01-21 | 2022-05-13 | 西安建筑科技大学 | Device and method for electrokinetic remediation of polluted soil by combining chelating agent and permeable reactive barrier |
| CN116251832B (en) * | 2023-01-14 | 2024-05-14 | 西安建筑科技大学 | Method and system for electrically repairing heavy metal contaminated soil by cementing and strengthening biocatalyst |
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| CN1695834A (en) * | 2005-06-09 | 2005-11-16 | 上海交通大学 | Method of electrodynamics for restoring soil polluted by heavy metal |
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