CN106623386A - Electric restoration vertical device for heavy metal contaminated soil - Google Patents
Electric restoration vertical device for heavy metal contaminated soil Download PDFInfo
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- CN106623386A CN106623386A CN201710042701.5A CN201710042701A CN106623386A CN 106623386 A CN106623386 A CN 106623386A CN 201710042701 A CN201710042701 A CN 201710042701A CN 106623386 A CN106623386 A CN 106623386A
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- soil
- vertical cylinder
- polluted soils
- electrokinetic remediation
- heavy metal
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses an electric contaminated soil remediation device which is formed by connecting a plurality of treatment units in series or in parallel. Each processing unit comprises a vertical cylindrical insulating processing box, a vertical cylindrical COMBOPO detachable and replaceable composite cathode, an inert anode, a self-made non-standard programmable SynC alternating current and direct current hybrid power supply, a CAMP bag and the like. The method can be applied to the remediation and treatment of heavy metal and/or organic and/or radioactive contaminated soil and/or sludge and/or solid waste, and can also be applied to the enrichment and extraction of rare and/or rare earth and/or precious metal lean ores.
Description
Technical field
The invention belongs to remediation of heavy metal-contaminated soil field, and in particular to a kind of heavy-metal contaminated soil it is electronic
Prosthetic device.
Background technology
So-called " permanent to repair " is sought to contaminated soil（Including mud and other solid waste）Deng medium
In landfill out.Theoretically, landfill method includes the three major types of physics, chemistry and biology.
Wherein, the electronic technology that amends the law（Electrokinetic processing, EK）Mainly physical technique, although it be possible to
Chemistry or biology technology is combined so as to form new reparation pattern.
Early in the eighties in last century, with regard to someone using electric power to extract soil in heavy metal.1993, American Acar
The article for being intended to explain electro reclamation principle has been delivered first, is represented electric repairing technique and is formally formed.About nineteen ninety-five is left
The right side, it is domestic that small-scale research is done with regard to someone.But the earliest article that the country can find at present is in beginning of this century Zhou Dongmei and Deng
Prosperous sweet smell（2003）Be published in《Agro-environment science journal》On《The electric repairing technique of heavy-metal contaminated soil study into
Exhibition》.
The general principle of electro reclamation is inserted electrodes in contaminated soil, after direct current is applied, soil hole
The aqueous solution in gap produces EOF so that charged metal cation to negative electrode occurs electromigration, while powered anion faces south
Pole migrates, and the superposition of various travel motions carries the soil that heavy metal contaminants leave treatment region, and at negative and positive the two poles of the earth by heavy
The mode such as product or ion exchange, absorption, extraction is removed, so as to reach the purpose of reparation.During electro reclamation, can be with
The phenomenon such as generation electrolysis, EOF and electromigration, major influence factors include the electrolysis of water, soil property, heavy metal species and
Concentration etc..The main research of Chinese scholars includes：
1st, alkaline band how is controlled, remediation efficiency is improved.During electro reclamation, in the space model apart from negative electrode 1/3 ~ 2/3
In enclosing, pH value >=9 " alkaline band " can be produced.Most of heavy metals when alkaline band is run into, just and OH-Combine to form hydroxide
Thing is precipitated, and so as to cause the interruption of transition process, causes repairing failure.In order to control the scope of alkaline band, remediation efficiency is improved,
Many scholars propose improvement idea, common are acid-base neutralization method, cation selective embrane method, electroosmose process, complexing agent method,
Surfactant method, oxidation-reduction method, EK- biotechnologys combination method and LasagnaTMMethod.
2nd, electric power supply mode.Including（1）Galvanic control electric current method and control voltage method；（2）Alterating and direct current is handed over
For the technology and method that use.Usually, galvanic electric-force gradient is (0.4～2V/cm) and current density (2～5mA/
cm2)。
3rd, the research of the mechanism of electro reclamation and its influence factor.Main mode including contaminant transportation, mechanism and its
Mathematical Modeling etc..The impact of research soil types and its property to repairing effect etc..About studying the effect to improving electro reclamation
Rate has great importance.
4th, application study.Cu contaminated soils are repaired including electricity；It is dehydrated from sludge using EOF principle；Utilize
Tween80, nitric acid, EDTA etc. control negative electrode pH；Heavy-metal contaminated soils such as Cr, Pb, Zn, Cd, Hg etc. are repaired using EK.Also wrap
Include the reparation to mud, bed mud and organic pollution contaminated soil.
From in terms of the locus that technology is realized, electric repairing technique is segmented into In-situ, original place strange land and repairs and different
Ground dystopy three major types.The invention belongs to the prosthetic device designed to realize original place ex-situ techniques.Dystopy in situ domestic at present
Technical Exemplary patents technology is as follows.
Patent CN1695834（Publication date 2005-11-16）《The electromotion repairing technique method of heavy-metal contaminated soil》：One
The electromotion repairing technique method of heavy metal species contaminated soil, is separated negative electrode with tested soil sample using amberplex, is used in combination
Porous ceramic plate is placed between amberplex and soil prevents and treats amberplex blocking, the H produced using electrode itself+With
OH-, and by the iris action of amberplex, the pH value of soil during electromotion repairing technique is controlled, accelerate pollutant
Dissolution and migration.Anodic dissolution keeps highly acid after process, for cleaning, regenerant ions exchange membrane.Cathode solution keeps highly basic
Property, most of heavy metal cations are combined with alkali generates precipitation, and by precipitation, centrifugal purification purity heavy metal compound is obtained,
And the alkaline cathode solution after being purified is used for the acid of sweetening of the soil.The method has safe and reliable, easy to operate and cost
Cheap the advantages of, the pH value of soil can substantially return to original state after reparation.
Patent CN1714955（Publication date 2006-01-04）《Heavy-metal contaminated soil cathode acidifying electric power repairs work
Skill》：The invention discloses a kind of cathode acidifying electric power repairing process for heavy metal contaminated soil, it is mainly comprised the following steps：By Jing certainly
So ionized water is added in the soil of air-dried decontamination, stir stewing process, the contaminated soil of process loads Electroremediation device
Soil chamber, then stand to after input electrolyte in each pole tank house, then be passed through constant dc current, the heavy metal in contaminated soil
Constantly desorb from soil during reparation, and soil is migrated out in the presence of electric field, so as to realize heavy metal
The improvement of contaminated soil.The technique of the present invention has repair time short, easy to operate, the features such as heavy metal removing rate is higher, has
Obvious economic benefit and social benefit.
Patent CN201511038U（Publication date 2010-06-23）《Electromotive power chromium pollution soil restoration device》：It is a kind of electronic
Power complex repairation chromium-polluted soil device, it includes anode region, cathodic region and power supply, and it also includes porous media sand stone layer and iron
Bits layer, placement anode buffer solution and negative electrode cushioning liquid respectively anode region and cathodic region in, and connect with two poles respectively；
Porous media sand stone layer and iron filings layer are set gradually on anode region and the opposite face in cathodic region, is formed between cathodic region to a huge sum of money
The reparation area that category contaminated soil is repaired.Under electrodynamic action, nearby electrification in the soil liquid to electrode to the utility model there is
The physicochemical properties such as element reaction, oxidation-reduction potential, the pH value in change soil are learned, accelerates the solution of heavy metal on soil solid
Inhale, improve the concentration of heavy metal in the soil liquid, the absorption, accumulation so as to fortification of plants makes many of Soil Microorganism colony
Sample and vigor are greatly increased, and increased the yield of crop.
Patent CN102284474A（Publication date 2011-12-21）《Using electric energy repairing polluted soil and process solid waste
Method and device》：The present invention relates to a kind of repairing polluted soil and process solid waste method and device, Gu soil/
Useless two ends set up negative electrode and anode reaction pond separately, and bottom sets moisturizing layer, supplement in water containing can improve organic pollution and heavy metal exists
The chemical agent of solubility in water, top covers removable contaminant collecting layer, and inside arranges removable artificial focusing band.
Soil/solid waste temperature is set to rise to tens of or even hundreds of degree by applying high voltage and high current, volatile organic contaminant is because of height
Temperature is therefrom evaporated, and Unvolatilized organic pollutant and heavy metal are trapped in after water evaporation collection with the collecting layer that rises to waterborne
In layer, part heavy metal ion is moved in electrode cell and artificial focusing band along direction of an electric field.Yin, yang the two poles of the earth produce hydrogen and
Oxygen is collected separately for burning pollutant evaporate, in collecting layer and in focal zone；Oxygen may also be fabricated which
The pollutant for having cleared in ozone oxidation soil/solid waste or.
Patent CN102357522A（Publication date 2012-02-22）《One kind is using multiple polar electric pole electro reclamation pollution of chromium soil
The method of earth》：The invention discloses a kind of method of multiple polar electric pole electro reclamation chromium-polluted soil, is adapted to the different of contaminated soil
Repair position.The method builds first multipole faradaic reaction device, device by controllable dc source, graphite anode, anode slot,
Rigid plastics expanded metals, soil chamber, cathode can, graphite cathode composition.Using above-mentioned multipole faradaic reaction device, Cr VI is taken dirty
Dye soil, soil moisture content 30～50% removes impurity relatively large in soil, stirs, in being filled into soil chamber, then
Add water in two slot electrodes simultaneously, the liquid level and soil surface in soil chamber for making two slot electrodes is consistent, then
Direct current is passed to, voltage gradient is 1.0～2.0V/cm.Remain powered on the time 120～144 hours, reparation terminates.Reparation terminates
Afterwards, soil is positively retained at 6.0～8.0 from anode region to cathodic region pH；Eh is between 300～85mV.Total chromium clearance reaches
To 74.2～81.5%, hexavalent chromium removal rate reaches 84.1～89.6%.
Patent CN104492796A（Publication date 2015-04-08）《A kind of method of electro reclamation heavy-metal contaminated soil》：
The invention belongs to soil remediation field, discloses a kind of method of electro reclamation heavy-metal contaminated soil, described method and step
Including as follows：The soil of configuration simulation heavy metal pollution is standby；Self-control electrokinetic tests device：Mainly include 5 reactive tanks, successively
Sequentially it is：, there is the permeable coefficient tensor containing molecular sieve anode chamber, soil chamber, cathode chamber, soil chamber and anode chamber between reactive tank
PRB, additionally contains Yin/Yang pole electrode and Yin/Yang pole working solution, and DC voltage-stabilizing power supply including Yin/Yang pole room；Again
Contaminated soil is filled in self-control electrokinetic tests device；Operation electrokinetic tests, its soil is taken after one week carries out Analysis of Heavy Metal
Test.
Patent CN204276511U（Publication date 2015-04-22）《A kind of prosthetic device of heavy-metal contaminated soil》：It is a kind of
The prosthetic device of heavy-metal contaminated soil, using movable wind-solar complementary electric power system as Electrokinetic Remediation of Polluted Soils confession
Power supply, by wind-power electricity generation and solar cell power generation direct current is exported, while charged with battery, by battery to electronic
Prosthetic appliance provides stable electric energy, and the output of battery is connected respectively with the positive and negative electrode at electro reclamation equipment two ends, positive and negative
Electrode is individually placed in anode pool, cathode pool, is connected with both sides work liquid storage tank respectively by pump and pipeline outside anode pool, cathode pool
Connect, heavy-metal contaminated soil is placed in the middle of electro reclamation equipment, and the sintered glass filter disc by both sides and anode pool, negative electrode
Pond separates.The utility model as the power supply of Electrokinetic Remediation of Polluted Soils, solves movable wind-solar complementary electric power system
The difficult problem of remote contaminated site transmission of electricity, energy saving effectively reduces the operating cost of the technology.
Patent CN104550215A（Publication date 2015-04-29）《The method of electro reclamation heavy-metal contaminated soil and set
It is standby》：A kind of method of electro reclamation heavy-metal contaminated soil, at contaminated soil two ends electrolytic cell is arranged, and electrolytic cell is inserted into electricity
Pole, connects in-between the electrodes the voltage source of adjustable electrode potential, if contaminant ion or contaminant compound positively charged,
It is higher than positive electrode potential absolute value then to arrange negative electrode potential absolute value.Additionally, by feeding device and pumping equipment respectively with electricity
Xie Chi is connected, and is that electrolyte is added and discharged in electrolytic cell.The invention also discloses electro reclamation heavy-metal contaminated soil sets
Standby, it includes voltage source, soil chamber, electrolytic cell, electrode, discharging tube, feed tube and liquid feeding pump.The present invention can improve pollutant
Clearance, reducing energy consumption, and equipment is simple, with low cost.
Patent CN103418607A（Publication date 2013-12-04）《A kind of contaminated soil magnetic helps electro reclamation device》：This
It is bright to disclose a kind of contaminated soil magnetic and help electro reclamation device.By the effect in extra electric field and magnetic field, the pollution in soil is made
Material accelerates to be enriched in predetermined region, reaches the purpose of cleaning soil.Apparatus of the present invention include electrode solution adding tube, positive plate,
Treatment region, cathode column, electrode chamber, magnet, shell, electrode solution delivery pipe.Contaminated soil is placed in into treatment region, electrode solution is through pipe
Road enters electrode chamber area, and then the pollutant in the presence of additional electromagnetic field in soil is migrated rapidly, improves local pollution
The concentration of thing.Present configuration is simple, construction cost is low, easily operated, and can realize multiple pollutant in soil
Degraded is removed.
Patent CN103406347A（Publication date 2013-11-27）《One kind can be used for heavy metal and organic matter in Enriching soil
Method》：The invention discloses a kind of method that can be used for heavy metal and organic matter in Enriching soil, it is characterised in that by taking
Build electrokinetic enrichment system and electric field is formed in soil, by EOF, electromigration by the heavy metal and organic matter in soil
A certain region is enriched in, is then separated, purified；The electrokinetic enrichment system electrokinetic enrichment system is by controllable direct current
Source, anode chamber, cathode chamber, soil, electrode, cation-exchange membrane composition；Anode chamber and anode, cathode chamber and negative electrode are located at electronic
The both sides of reaction system, soil is located at the centre of two electrodes, and cation-exchange membrane is arranged between cathode chamber and soil, and controllable is straight
Stream power supply jointed anode and negative electrode.Using the present invention provide method be enriched with, the more plants enriched time is short, not by nature because
Plain impact and heavy metal is enriched with and do not have selectivity, and then reaches the purpose of changing rejected material to useful resource and rehabilitating soil.
Patent CN203380185U（Publication date 2014-01-08）《A kind of device of utilization Electroremediation contaminated soil》：
The utility model discloses a kind of device of utilization Electroremediation contaminated soil, reacts comprising dc source (1), soil remediation
Device (13), electrode (6), cation-exchange membrane (8).The device can be by applying DC voltage, forming direct current at soil two ends
, heavy metal, organic matter etc. is removed under the effect such as electromigration and EOF.Can be used for the heavy metal in various soil
And the removal of organic matter.It is quick, effective using this device repairing polluted soil, do not affected by natural cause.
Patent CN103736718A（Publication date 2014-04-23）《The electric repair method and its dress of heavy-metal contaminated soil
Put》：The present invention relates to the electric repair method and its device of heavy-metal contaminated soil, a kind of heavy metal polluted soil of present invention offer
The electro reclamation device of earth, described device include preprocessing system, D.C. regulated power supply, electronic electrode etc., master control system and
After-treatment system, wherein, master control system connects and controls the preprocessing system, D.C. regulated power supply and after-treatment system；
D.C. regulated power supply provides power supply for electronic electrode.Electronic soil restoring technology is capable of achieving the original position of heavy-metal contaminated soil and repaiies
It is multiple, secondary pollution is not produced, processing cost is relatively low.Solve conventional soil restoring technology equipment investment height, processing cost high, easy
Cause the difficult problems such as secondary pollution.
Patent CN103752596A（Publication date 2014-04-30）《The method and dress of metal ion in repairing polluted soil
Put》：The invention discloses in a kind of repairing polluted soil metal ion method and device.The method is by electrodynamics and quiet
Two kinds of recovery techniques of Electrospun nano-fibers film PRB are used in combination with the metal ion in repairing polluted soil.The device includes
Soil chamber and be respectively arranged on anode chamber, the cathode chamber at soil chamber two ends, between soil chamber and anode chamber, soil chamber and cathode chamber it
Between be respectively provided with one layer of Electrospun nano-fibers film PRB, anode is provided with anode room, negative electrode, anode and the moon are provided with negative electrode room
Pole is connected respectively with the two ends of dc source.The method of the present invention and device are by electrodynamics and Electrospun nano-fibers film
PRB is combined with the mechanical strength and resistance to chemical corrosion that improve PRB reaction mediums, the metal that can efficiently remove in contaminated soil
Ion.
Patent CN102806228A（Publication date 2012-12-05）《A kind of contaminated soil heterotopic electro reclamation device and its side
Method》：The purpose of the present invention is to avoid focusing phenomenon from occurring, shorten the electro reclamation time, is repaiied so as to improve repairing effect and reduction
Multiple expense.The technical scheme adopted to realize the object of the invention is a kind of such, contaminated soil heterotopic electro reclamation device,
Including soil bearing system, electrode system and electrode working solution spray system.The bottom porous layer I of the soil bearing system.
The electrode system includes being separately positioned on the Top electrode and bottom electrode of soil bearing system upper and lower, described upper and lower during work
Electrode institute is electrically charged contrary.The electrode working solution spray system includes being arranged on some sprays below the soil bearing system
Mouth is drenched, during work, the spray nozzle sprays upwards working solution.
Patent CN102941217A（Publication date 2013-02-27）《A kind of drum type brake arrangement electrode Electroremediation device and
Method》：The invention discloses a kind of drum type brake arranges electrode Electroremediation apparatus and method, belong to environmental protection equipment technology neck
Domain.The device of the present invention is had the annular or arc-shaped electrode of together circle center by electrode solution storage bin, electrode fluid valve, at least two
Room and electrode, electrode flow meters, liquid feeding pump valve, fluid filling pump, adsorption layer composition；Electrode be located at electrode room in, and with it is external
Dc source is connected；Electrode chamber is connected with fluid filling pump.Described method is：By the pollution feelings to pending contaminated site
Condition, selects suitable electrode chamber quantity, by electrode chamber and electrode embedment underground, by fluid filling pump by electrode solution injecting electrode room；
It is powered to electrode, so that the heavy metal ion inside contaminated site is adsorbed on the sorbing material on adsorption layer, so as to reach
To the purpose for removing removing heavy metals.The apparatus structure of the present invention is simple, and easy to use, low engineering cost, use range is wide；The present invention
The method of offer have the advantages that it is economical, efficiently, it is energy-conservation, quick.
Patent CN103170499A（Publication date 2013-06-26）《A kind of soil or Heavy Metals in Sludge and organic pollution
Electronic minimizing technology》：The present invention provides the electronic minimizing technology of a kind of soil or Heavy Metals in Sludge and organic pollution, should
Fang Fangfa uses following electronic removal device, and it includes：Rotary drum, is coated with thereon conductive material, conductive material outside
It is coated with the reaction wood bed of material；Gear, it is provided around the rotary drum；Outside closed loop hinge crawler belt, it is by conductive material
Make, and by being engaged on the gear and closed loop operating；Closed loop conveys crawler belt, and it is used for conveying soil or sludge, and wears
The gap crossed between the outside closed loop hinge crawler belt and the rotary drum and be pressed in the rotary drum.By making
With described device and the suitable operation technological parameter of selection, the effective and rapid ground of energy is while remove polluted soil or the weight in sludge
Metal and/or organic pollution, easy to operate, removal efficiency is high, with good prospects for commercial application.
Patent CN103316909A（Publication date 2013-09-25）《For heavy metal or the electric power of organic material contaminated soil
Learn prosthetic device and method》：The invention belongs to technical field of environmental management, more particularly to a kind of dirty for heavy metal or organic matter
The electromotion repairing technique device and method of dye soil.The device is by dc source, anode chamber, gas collector, soil chamber, sun
Pole electrode and cathode electrode are constituted.Apparatus of the present invention are under electric press, and the electrode electrochemistry element of soil liquid generation nearby is anti-
Should, the physicochemical property such as oxidation-reduction potential, pH value in change soil can make hypotonicity by HP-β-CD
One higher electrical conductivity of soil conservation, accelerate soil solid on heavy metal or organic matter desorption.
It is of the invention to have huge difference in the form of whole equipment and the building block etc. of each unit with existing technology.
The content of the invention
To solve the above problems, the invention discloses a kind of Electrokinetic Remediation of Polluted Soils device, the device is by a process
Unit is constituted or consisted of serial or parallel connection several processing units；The processing unit includes：Vertical cylinder insulate
Treatment box, vertical cylinder COMBOPO detachable changeable type composite cathodes, inert anode, the nonstandard programmable SynC of self-control hand over straight
Stream hybrid power supply, CAMP bags；Vertical cylinder COMBOPO is accommodated in the vertical cylinder insulation processing case detachable more
Change formula composite cathode, inert anode, CAMP bags.
Further, the vertical cylinder insulation processing case is made up of one of fiberglass, insulation rubber cushion, insulation board.
Further, one of the inert anode optional graphite, titanium alloy, platinum is made.
Further, the radius r of the vertical cylinder insulation processing case1For 0.10m ~ 50m, height H1For 0.20m ~
20m。
Further, the vertical cylinder insulation processing case is combined with vertical cylinder COMBOPO detachable changeable types
Negative electrode is coaxial；The radius r of the vertical cylinder COMBOPO detachable changeable type composite cathodes2For 0.01 ~ 30m, height H2For
0.20m~20m。
Further, the output current voltage of the nonstandard programmable SynC alternating/direct current hybrid power supplies of the self-control is：
AC0.1V0.01A ~ 100000V10000A/DC0.1V0.01A ~ 100000V10000A, by computer or other PLC technologies
Unit is controlled.By computer or other PLC technology unit controls, can be according to formula { [A i ]-[D j ]} k , i=1,2,…,
N; j=1,2,…,M;K=1,2 ..., L is programmed circular flow.
Further, additive can be injected into the vertical cylinder by conduit with the additive injector for having cup scale metered exhausted
Edge treatment box bottom；Injection rate Q of additive is pressed formula Q=pW and calculates and obtain, and wherein p is adjustment factor, and W is vertical cylinder
The quality of soil in insulation processing case.The additive is water and/or liquid chemical challenges and/or solution.Typically, for tool
There are the composition and the type of additive of Different Soil/mud/solid waste/ore/waste water, p is needed by lab scale
To determine.Additive injector can be directly mounted at the top for the treatment of box, and using gravity injecting additive is directly added；Can also be other
Put, with pump plus injecting additive；If need not inject additive in repair process, additive injector can be omitted.According to Q=pW
After being calculated the consumption of additive, it is also possible to do not use additive injector and directly pour the additive for having configured into process
Mix in case and with substance to be processed.
Further, described device is applied to heavy metal/organic matter/radioactive pollution soil and/or mud and/or solid
Discarded object repair process.VOCs, SVOCs, the POPs of described device suitable for soil and/or mud and/or solid waste
With the low temperature desorption of the organic pollution such as PCBs.Described device is applied to the enrichment and extraction of rare and/or noble metal lean ore,
Can be used for industrial and mining enterprises' wastewater treatment containing pollutant.
Beneficial effects of the present invention are embodied in following aspects：
First, " original place dystopy " technology is employed, the power wastage that electrode ground connection can be avoided to cause completely applies electric power
In soil remediation, the energy was both saved, reparation speed had been improve again, and further saved the aspects such as human and material resources and financial resources
Cost.
Second, using vertical cylinder treatment box and COMBOPO detachable changeable type composite cathodes, it is convenient to omit many
Transmission device, for the heavy metal/organic matter/alpha-contamination soil/mud/waste residue or to be enriched with lean of fixed location
The process of ore deposit ore is convenient, and single batch treating capacity is bigger.Cation heavy metal can also be concentrated, by precipitation, absorption
It is that the recycling of heavy metal is possibly realized by the cathode material of heavy metal " imprison in " volume very little with the mode such as solidification.
Cylindric COMBOPO detachable changeable types composite cathode also has control soil acidity or alkalinity and accelerates the work of heavy metal transformation speed
With.
3rd, cylindric treatment box is coaxial with cylindric COMBOPO detachable changeable types composite cathode, can make processing
Anode inside case is equal everywhere with the distance of negative electrode so that soil treatment becomes uniform.
Description of the drawings
Fig. 1 is the cross-sectional view of a unit of electro reclamation device of the present invention.
In Fig. 1,1 is vertical cylinder insulation processing case；2 is inert anode；3 is CAMP bags；4 is vertical cylinder
COMBOPO detachable changeable type composite cathodes；5 is cathode material room；6 is the fixing axle of composite cathode.
Specific embodiment
Feature of present invention is described in further detail with reference to embodiments.
As shown in figure 1, Electrokinetic Remediation of Polluted Soils device of the present invention is made up of or by some a processing unit
Individual processing unit is consisted of serial or parallel connection.The processing unit includes：Vertical cylinder insulation processing case（1）；Inertia sun
Pole（2）；CAMP bags（3）；Vertical cylinder COMBOPO detachable changeable type composite cathodes（4）；Cathode material room（5）；Compound the moon
The fixing axle of pole（6）, make nonstandard programmable SynC alternating/direct current hybrid power supplies by oneself, wherein, the vertical cylinder insulation position
Reason case（1）Inside can accommodate inert anode（2）, CAMP bags（3）, vertical cylinder COMBOPO detachable changeable type composite cathodes
（4）.Vertical cylinder insulation processing case is preferably made up of fiberglass.Inert anode selects graphite material.Vertical cylinder insulate
The radius r for the treatment of box1For 0.10m ~ 50m, height H1For 0.20m ~ 20m.Vertical cylinder insulation processing case and vertical cylinder
COMBOPO detachable changeable type composite cathodes are coaxial；The half of the vertical cylinder COMBOPO detachable changeable type composite cathodes
Footpath r2For 0.01 ~ 30m, height H2For 0.20m ~ 20m.
The electro reclamation device course of work of heavy-metal contaminated soil of the present invention is as follows：
Contaminated soil is originated：Nearby heavy metal polluted soil of farmland is native with Guizhou wanshan mercury area mercury pollution for Hunan contaminated site
The mixture of earth.
Polluted heavy metals element：Cd, Cu, Pb, Zn and Hg etc..
Heavy metal element concentrations versus before and after the mixture soil electro reclamation of table 1
Heavy metal concentration in initial soil：It is shown in Table 1.The pollutant of this mixed soil is mainly heavy metal Cd, Cu, Pb, Zn and Hg,
Their concentration is respectively 2.38mg/kg, 248.34 mg/kg, 649.75 mg/kg, 505.69 mg/kg and 370.84 mg/
kg.They are respectively beyond national 11.90 times, 7.10 times, 18.56 times, 5.06 times and 2472.27 of soil quality standard primary standard
Times；Beyond 2.38 times, 0.62 times, 1.30 times, 1.01 times and 247.23 times of grade III Standard.
Repair flow process：（1）Will by device with it is vehicle-mounted enter scene.（2）With artificial or mechanical system by soil to be repaired（It is original
Soil）About 2m3Dig out, be transferred in the cloth bag in treatment box, quantity is depending on treatment box size.（3）Add a special huge sum of money
Category activator, then 1:1 ratio adds clean water, stirs, in being placed in cloth bag.（2）On electrode according to separate procedure and when
Between alternate the alternating current and direct current for applying certain voltage and electric current, respectively through 24 hours and 48 hours after, equivalent is adopted
In collection cloth bag the pedotheque of different exemplary positions several, after sufficiently mixing, send laboratory assay Cd, Cu, Pb therein
With the concentration of the element such as Zn.
Repairing effect is analyzed：After 24 are processed, the concentration of 5 elements such as Cd, Cu, Pb, Zn and Hg becomes respectively in soil
Into 1.65 mg/kg, 188.26 mg/kg, 554.68 mg/kg, 496.98 mg/kg and 337.70mg/kg, heavy metal goes
Except rate is respectively 30.67%, 24.19%, 14.63%, 1.72% and 8.94%.8.25 times relative to soil quality primary standard,
Again, 5.38 times, 15.85 times, 4.97 times and 2251.33 times；1.65 times relative to soil quality grade III Standard, 0.47 times,
1.11 times, 0.99 times and 225.13 times.
After 48 are processed, the concentration of 5 elements such as Cd, Cu, Pb, Zn and Hg has respectively become 0.71 mg/ in soil
Kg, 75.66 mg/kg, 229.56 mg/kg, 134.25 mg/kg and 97.33 mg/kg；The clearance of heavy metal is respectively
70.17%th, 69.53%, 64.67%, 73.45% and 73.75%；3.55 times relative to soil quality primary standard, 2.16 times,
6.56 times, 1.34 times and 648.87 times；0.71 times, 0.19 times, 0.46 times, 0.27 times relative to soil quality grade III Standard and
64.89 times.Therefore, in addition to Hg elements, Cd, Cu, Pb and Zn element has been reached below three-level quality standard；Enter one
The analysis test result of step shows, due to being mixed into the Hg contaminated soils from mercury ore area in soil, shared by residual form therein
Ratio is higher；After 48 hours are processed, there is the THg of high level in soil, but remaining Hg is mainly the Hg of residual form,
The harm of Hg pollutions mitigates significantly.
As can be seen here, using this device, the weight such as Cd, Cu, Pb, Zn and Hg that can be in 48 hours in effective reduction soil
Metallic element.After the process of 48 hours, the concentration of all elements declines more than 64%, wherein under Hg elements in soil
Range of decrease degree is maximum, reaches about 73.75%.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to this
The restriction of the embodiment of invention.For those of ordinary skill in the field, on the basis of the above description can be with
Make other changes in different forms.Here all of embodiment cannot be exhaustive.It is every to belong to the present invention
The obvious change extended out of technical scheme or change row still in protection scope of the present invention.
Claims (10)
1. a kind of Electrokinetic Remediation of Polluted Soils device, it is characterised in that the device is made up of or by several processing unit
Processing unit is consisted of serial or parallel connection；The processing unit includes：Vertical cylinder insulation processing case, vertical cylinder
COMBOPO detachable changeable type composite cathodes, inert anode, make by oneself nonstandard programmable SynC alternating/direct current hybrid power supplies,
CAMP bags；Vertical cylinder COMBOPO detachable changeable type composite cathodes, lazy are accommodated in the vertical cylinder insulation processing case
Property anode, CAMP bags.
2. Electrokinetic Remediation of Polluted Soils device according to claim 1, it is characterised in that the vertical cylinder insulation position
Reason case is made up of one of fiberglass, insulation rubber cushion, insulation board.
3. Electrokinetic Remediation of Polluted Soils device according to claim 1, it is characterised in that the inert anode may be selected stone
One of ink, titanium alloy, platinum are made.
4. Electrokinetic Remediation of Polluted Soils device according to claim 1, it is characterised in that the vertical cylinder insulation position
The radius r of reason case1For 0.10m ~ 50m, height H1For 0.20m ~ 20m.
5. Electrokinetic Remediation of Polluted Soils device according to claim 1, it is characterised in that the vertical cylinder insulation position
Reason case is coaxial with vertical cylinder COMBOPO detachable changeable type composite cathodes；The vertical cylinder COMBOPO is detachable more
Change the radius r of formula composite cathode2For 0.01 ~ 30m, height H2For 0.20m ~ 20m.
6. Electrokinetic Remediation of Polluted Soils device according to claim 1, it is characterised in that the self-control is nonstandard programmable
The output current voltage of SynC alternating/direct current hybrid power supplies is：AC0.1V0.01A~100000V10000A/DC0.1V0.01A~
100000V10000A, by computer or other PLC technology unit controls.
7. Electrokinetic Remediation of Polluted Soils device according to claim 1, it is characterised in that the available addition for having a cup scale metered
Additive is injected the vertical cylinder insulation processing bottom portion by agent injector by conduit；Injection rate Q of additive is by public affairs
Formula Q=pW is calculated and obtained, and wherein p is adjustment factor, and W is the quality of soil in vertical cylinder insulation processing case.
8. Electrokinetic Remediation of Polluted Soils device according to claim 1, it is characterised in that described device is applied to a huge sum of money
Category/organic matter/radioactive pollution soil and/or mud and/or solid waste repair process.
9. Electrokinetic Remediation of Polluted Soils device according to claim 1, it is characterised in that described device is applied to soil
And/or the low temperature desorption of the organic pollution such as mud and/or VOCs, SVOCs, POPs and PCBs in solid waste.
10. Electrokinetic Remediation of Polluted Soils device according to claim 1, it is characterised in that described device is applied to rare
And/or the enrichment and extraction of noble metal lean ore, it can also be used to industrial and mining enterprises' wastewater treatment containing pollutant.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108103518A (en) * | 2018-01-23 | 2018-06-01 | 陕西师范大学 | It is a kind of to return combination electrode device of lead reparation and preparation method thereof and restorative procedure for cultural artifact surface white lead |
| CN109332372A (en) * | 2018-12-14 | 2019-02-15 | 浙江中地净土科技有限公司 | A kind of electro reclamation vertical unit of heavy-metal contaminated soil |
| CN109596462A (en) * | 2018-10-25 | 2019-04-09 | 中国辐射防护研究院 | A kind of three-dimensional radioactivity Leaching Experiments equipment |
| CN109731902A (en) * | 2019-01-17 | 2019-05-10 | 天津友爱环保科技有限公司 | A kind of movable type electrochemical soil prosthetic device |
| CN110856858A (en) * | 2018-08-24 | 2020-03-03 | 北京中岩大地科技股份有限公司 | In-situ decontamination method for polluted soil containing high-concentration pollutants |
| CN114192567A (en) * | 2021-12-08 | 2022-03-18 | 江苏澳洋生态园林股份有限公司 | Process for improving acidified contaminated soil |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5137608A (en) * | 1989-11-30 | 1992-08-11 | Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College | Electrochemical decontamination of soils or slurries |
| JP2003320366A (en) * | 2002-05-02 | 2003-11-11 | Nippon Steel Corp | Method for cleaning contaminated soil |
| CN102513348A (en) * | 2011-12-15 | 2012-06-27 | 中国科学院南京土壤研究所 | Electric complex-strengthening repairing method and device of heavy metal-organic co-contaminated soil |
| CN102941217A (en) * | 2012-11-15 | 2013-02-27 | 华北电力大学 | Electric power repairing device and method for cylindrical arrangement electrode |
| CN103316909A (en) * | 2013-07-05 | 2013-09-25 | 华北电力大学 | Electrodynamic remediation device and method for soil polluted by heavy metal or organic matters |
| CN103752596A (en) * | 2014-01-27 | 2014-04-30 | 湖南省交通规划勘察设计院 | Method and device for repairing metal ions in contaminated soil |
| CN105880272A (en) * | 2016-02-22 | 2016-08-24 | 华中农业大学 | Leaching repair system for heavy metal contaminated soil |
| CN205659980U (en) * | 2016-05-30 | 2016-10-26 | 湖南恒凯环保科技投资有限公司 | Joint fenton oxidation strengthening biological of electric power migration restores reactor that phenol pollutes soil |
-
2017
- 2017-01-20 CN CN201710042701.5A patent/CN106623386B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5137608A (en) * | 1989-11-30 | 1992-08-11 | Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College | Electrochemical decontamination of soils or slurries |
| JP2003320366A (en) * | 2002-05-02 | 2003-11-11 | Nippon Steel Corp | Method for cleaning contaminated soil |
| CN102513348A (en) * | 2011-12-15 | 2012-06-27 | 中国科学院南京土壤研究所 | Electric complex-strengthening repairing method and device of heavy metal-organic co-contaminated soil |
| CN102941217A (en) * | 2012-11-15 | 2013-02-27 | 华北电力大学 | Electric power repairing device and method for cylindrical arrangement electrode |
| CN103316909A (en) * | 2013-07-05 | 2013-09-25 | 华北电力大学 | Electrodynamic remediation device and method for soil polluted by heavy metal or organic matters |
| CN103752596A (en) * | 2014-01-27 | 2014-04-30 | 湖南省交通规划勘察设计院 | Method and device for repairing metal ions in contaminated soil |
| CN105880272A (en) * | 2016-02-22 | 2016-08-24 | 华中农业大学 | Leaching repair system for heavy metal contaminated soil |
| CN205659980U (en) * | 2016-05-30 | 2016-10-26 | 湖南恒凯环保科技投资有限公司 | Joint fenton oxidation strengthening biological of electric power migration restores reactor that phenol pollutes soil |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108103518A (en) * | 2018-01-23 | 2018-06-01 | 陕西师范大学 | It is a kind of to return combination electrode device of lead reparation and preparation method thereof and restorative procedure for cultural artifact surface white lead |
| CN108103518B (en) * | 2018-01-23 | 2023-04-18 | 陕西师范大学 | Composite electrode device for repairing white lead on surface of cultural relic and preparation method and repair method thereof |
| CN110856858A (en) * | 2018-08-24 | 2020-03-03 | 北京中岩大地科技股份有限公司 | In-situ decontamination method for polluted soil containing high-concentration pollutants |
| CN109596462A (en) * | 2018-10-25 | 2019-04-09 | 中国辐射防护研究院 | A kind of three-dimensional radioactivity Leaching Experiments equipment |
| CN109596462B (en) * | 2018-10-25 | 2021-07-23 | 中国辐射防护研究院 | Three-dimensional radioactive leaching experimental equipment |
| CN109332372A (en) * | 2018-12-14 | 2019-02-15 | 浙江中地净土科技有限公司 | A kind of electro reclamation vertical unit of heavy-metal contaminated soil |
| CN109731902A (en) * | 2019-01-17 | 2019-05-10 | 天津友爱环保科技有限公司 | A kind of movable type electrochemical soil prosthetic device |
| CN114192567A (en) * | 2021-12-08 | 2022-03-18 | 江苏澳洋生态园林股份有限公司 | Process for improving acidified contaminated soil |
| CN115365288A (en) * | 2022-09-02 | 2022-11-22 | 中南大学 | Electric repair device and repair method for heavy metal contaminated soil by combining low-temperature driving |
| CN115365288B (en) * | 2022-09-02 | 2024-02-27 | 中南大学 | Low-temperature-driven combined heavy metal polluted soil electric restoration device and restoration method |
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