CN206153283U - Nanometer zero -valent iron nickel drip washing electrodynamics restores device that ground soil was put to chromium slag muck - Google Patents
Nanometer zero -valent iron nickel drip washing electrodynamics restores device that ground soil was put to chromium slag muck Download PDFInfo
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- CN206153283U CN206153283U CN201621123537.8U CN201621123537U CN206153283U CN 206153283 U CN206153283 U CN 206153283U CN 201621123537 U CN201621123537 U CN 201621123537U CN 206153283 U CN206153283 U CN 206153283U
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Abstract
The utility model provides a nanometer zero -valent iron nickel drip washing electrodynamics restores device that ground soil was put to chromium slag muck, includes electrokinetic remediation device and drip washing system, the electrokinetic remediation device is the electrokinetic remediation device is provided with cathode chamber and anode chamber in soil chamber 's both sides, is provided with the drip washing system at soil chamber 's up end to leachate shower nozzle through the drip washing system sprays soil chamber, realizes restoreing in succession heavy metal contaminated soil's automation. This device utilizes the electrodynamics technique to restore soil jointly with nanometer zero -valent iron nickel bimetal leachate, has shortened the repair duration of soil effectively, has improved the remediation efficiency of soil.
Description
Technical field
This utility model is related to the prosthetic device that a kind of soil weight chromium slag muck puts pollution, and specifically iron salt is used as catholyte
Liquid, nanometer Fe/Ni bimetallics as leacheate, by electrokinetic technique and the dress of the united restoration of soil polluted by heavy metal of elution technique
Put.
Background technology
China is chromium salt production big country of the world, and annual production is produced a large amount of more than 160,000 tons in its production process
Chromium residue.National annual new about 600,000 tons of discharge chromium slag, it is nearly 4,000,000 tons that accumulation heap over the years leaves with chromium slag.Contain 0.3 in chromium slag
～1.5% solubility Cr (VI), Jing rainfalls and surface water wash away, and Cr (VI) enters surrounding soil and subsoil water, and environment is made
Into severe contamination, current China receives the soil of Cr (VI) severe contamination up to more than 1,250 ten thousand tons.Cr VI dissolubility in the solution
Than larger, thus toxicity is also just very strong, is the second largest heavy metal contaminants in soil environment, is only second to lead；Cr VI can be with
Murder by poisoning is produced to human body by modes such as suction, intake or skin contacts, causes a series of diseases such as edema, skin ulcer, pulmonary carcinoma
Become.Content of 6-valence Cr ions is very high in pollution of chromium place, and easily produces diffusion, is a great potential threat to surrounding enviroment,
Such as deal with improperly and will endanger very big.China started to build chromium salt factory from 1958, and it is densely populated that many chromium salt factories are distributed in some
Area, such as Guangzhou, Shanghai, Suzhou, Tianjin, Shenyang, Chongqing etc..In the production process of more than 50 years, substantial amounts of chromium is generated
Slag, account for substantial amounts of accumulation place, rainwater shower through decades, not exclusively infiltration, chromium slag itself, grid periphery by
Contaminated soil also into polluter, causes the pollution of soil environment and water environment.Chromium slag muck puts field and has been classified as China's soil
Pollution keypoint treatment object.Our countries are badly in need of repairing the key technology of chromium slag contaminated soil at present.
Technology of Electrodynamics Renovation can effectively remove the organic and inorganic pollution in soil with it, and compare biography
The soil restoring technology of system has the advantages that low cost, simple to operate, contact harmful toxic matter is few, does not easily cause secondary pollution, closely
What is at home and abroad developed over year is more and more faster.The principle of technology of Electrodynamics Renovation is to add low-voltage direct at contaminated soil two ends
The electrokinesises such as electric field, the electrodialysis produced using electric field, electromigration and electrophoresis, make water-soluble or absorption in soil particle table
The pollutant of layer according to each charged difference and move to different electrode directions, and thing is enriched in electrode district and is collected
Middle process or separation.Wherein electrodialysis are the pore water direction flowings from cathode to anode under electric field action in soil；Electricity is moved
Shifting is the contrary electrode direction migration of charged ion galvanotropism；Electrophoresis is the travel motion of charged colloidal particles in soil.
Soil chemistry elution technique principle is acted on the heavy metal in solid phase of soil with reagent, is formed deliquescent heavy
Metal ion or metal complex, then rush pollutant to outside root layer with clear water, recycle the chemical combination containing certain ligand
Thing shower soil, is allowed to form more stable complex with heavy metal ion；Or with anion solution, such as carbonate,
Phosphate rinses soil, makes heavy metal form compound precipitation.Drip washing has can remove a large amount of pollutant, the expansion of limit pollution thing
Dissipate, spend less, simple operation and other advantages.The key problem in technology of the method is to find a kind of huge sum of money that can extract various forms
Category, and do not destroy the eluent device of Soil structure.
Nano zero valence iron refers to zero-valent iron particle of the particle diameter in the range of 1-100 nm, big with specific surface area, reproducibility
Strong the features such as.Due to the specific surface area and surface energy of its granule it is larger, so as to superior absorption property and very high reduction
Activity；Its distinctive skin effect and small-size effect, can improve the reactivity and treatment effeciency of Zero-valent Iron.Research shows
Nano zero valence iron can effectively remove the heavy metals such as Zn, Cr, Cu, Pb, Ag.Nano zero valence iron is in the reaction with heavy metal contaminants
In show higher activity, can pass through change toxic metals ionic valence condition or adsorption, so as to reduce its toxicity.
There is viewpoint to think, there are 3 kinds of reducing agents in zero-valent metal ferrum system：Metallic iron (F0）, ferrous ion (Fe2+) and hydrogen
(H2).Nano zero-valence ferroalloy powder has many special physics, chemical property, wherein ferrum nickel due to quantum size effect
Alloy is a kind of material of traditional optimal stability.
Utility model content
For pollution of chromium in effective rehabilitating soil, the utility model proposes a kind of nano zero valence iron nickel drip washing electrodynamics
Repair the device that chromium slag muck puts ground soil.
Realize that the concrete technical scheme that said apparatus are taken is as follows：
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device of ground soil, including electro reclamation device
And elution circuit；It is characterized in that：The electro reclamation device includes cathode chamber, anode chamber and soil chamber, and in soil chamber
Upper surface is provided with the leacheate shower nozzle of elution circuit, and soil chamber is sprayed by leacheate shower nozzle；Under soil chamber
Side is provided with a track or conveyer belt to be used to separate soil chamber, to realize that the continuous automatically controlled of place soil is put to chromium slag muck repaiies
It is multiple；
The electro reclamation device is that anode pH control rooms pass through anode pH probe induced electrolyte pH, by anode pump control
Line traffic control anode pump processed pumps into anolyte, and carries out the regulation of electrolyte pH；Negative electrode grug feeding jar and negative electrode pH control rooms are logical
Negative electrode pH probe induced electrolyte phs are crossed, line traffic control negative electrode pump is controlled by negative electrode pump and is pumped into catholyte, and carry out electricity
The regulation of solution liquid pH；Anode chamber, soil chamber, cathode chamber, cathode electrode and anode electrode, respectively by the subsidiary filter paper of hole dividing plate
Separate, and pass freely through liquid and ion；Cationic membrane prevents the OH that negative electrode is produced-Into soil chamber；Catholyte overflows
Mouthful）The alkaline solution of spilling is discharged Jing after processing；By filter cloth and quartz sand filtration leacheate；Electrolysis unit also includes：Aeration
Pipe, catholyte overfall, anolyte feed tube, anode chemical feed pipe, negative electrode chemical feed pipe, external power supply, discharge pipeline, dirt
Dredge pump and the anode chamber and the cathode chamber base；
The elution circuit is by the nano zero valence iron nickel bimetal suspension of leacheate storage chamber and sour circulation fluid reserve room
In acid solution, respectively Jing leacheates shower nozzle and acid solution shower nozzle are sprayed in soil；The leacheate shower nozzle is to be uniformly arranged on soil
The top of earth room；The acid solution shower nozzle is uniformly arranged near negative electrode soil top, and the acid solution is to lead to anode spillage
Cross elevator pump and be collected in sour fluid reservoir and reused.
Based on the prosthetic device described in above-mentioned technical proposal, the electrolyte of the cathode chamber is the ferrum of 0.02-10mol/L
Salt；The electrolyte of the anode chamber is the citric acid-sodium citrate buffer solution of pH value 2-6；The leacheate is 0.05-10g/L
Nanometer Fe/Ni bimetallic suspensions；The iron salt is Fe2(SO4)3Or Fe (NO3)3、FeCl3；The cathode chamber, anode
Room is 3 with the volumetric ratio of soil chamber: 3：5-50；The electrode is graphite electrode, and the supply voltage of graphite electrode is 5-50V；
It is 36-300 hours that the nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts repair time of device of ground soil.
Based on the prosthetic device described in above-mentioned technical proposal, the nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck
The restorative procedure for putting the device of ground soil is realized by elution circuit, and concrete grammar follow these steps to carry out：
（1）Heavy-metal contaminated soil is placed in into soil chamber, and activated carbon fiber is added to carbon fiber room, then by cation
Film is attached on hole dividing plate and is wrapped up by filter paper；
（2）By negative electrode pH control rooms and anode pH control rooms by pH probe induced electrolyte phs, control negative electrode pump and
Anode pump pumps into catholyte and anolyte, and the pH to electrolyte is adjusted control；
（3）Nanometer Fe/Ni bimetallic the suspensions of 0.05-10 g/L are added in leacheate storage chamber, is sprayed by leacheate
Head is uniformly sprayed in contaminated soil and carries out drip washing；
（4）Repair process Anodic acidic electrolysis spillage, by catholyte elevator pump sour circulation fluid deposit is pumped into
Room, Jing acid solutions shower nozzle instills the soil near negative electrode, adjusts the pH of its soil；Negative electrode alkaline electrolysises spillage is by processing heel row
Go out；
（5）The heavy metal precipitation thing Jing discharge pipelines that negative electrode is generated are discharged, and are recycled Jing after processing；
（6）Filter cloth and quartz sand of the leacheate through soil chamber bottom is discharged, and is collected discharge after process.
Wherein, the elution circuit is by the nano zero valence iron nickel bimetal suspension of leacheate storage chamber and using negative electrode electricity
Solution spillage elevator pump is stored in the acid solution of sour circulation fluid reserve room, and respectively Jing leacheates shower nozzle and acid solution shower nozzle are sprayed at soil
In, realize the reparation of heavy metal contaminated soil.
Compared with prior art, above-mentioned the provided a kind of nano zero valence iron nickel drip washing electromotion repairing technique of this utility model
Chromium slag muck puts the device of ground soil, has the advantage that as follows with good effect.
This device is combined as the electrodynamics of catholyte using iron salt with nano zero valence iron nickel bimetal leacheate
Restoration of soil polluted by heavy metal, the OH for effectively preventing negative electrode to produce-Into soil, while shortening repair time, improve
Remediation efficiency.
This device is provided with pH induction meters in the anode chamber and the cathode chamber, and the changing value of real-time monitoring the anode chamber and the cathode chamber electrolyte pH works as pH
Beyond certain limit when, anode and cathode pH control room is adjusted and controls to pump into electrolyte liquid by pump, is kept at anode and cathode electrolyte pH
In proper range, electrolysis remediation efficiency is improve.
This device is effectively stripped of chromium using the extremely strong reproducibility of nano zero valence iron nickel bimetal leacheate and adsorptivity
Pollutant.
This device is provided with a track or conveyer belt below soil chamber, for the anode chamber and the cathode chamber and soil chamber point
From to realize the continuous processing of contaminated soil.
Description of the drawings
Fig. 1 is the structural representation that this utility model processes prosthetic device.
Fig. 2 is anode cell configuration schematic diagram of the present utility model.
Fig. 3 is the soil chamber side structure schematic diagram of this utility model figure patent.
Fig. 4 is the cathode chamber structural representation of this utility model figure patent.
Fig. 5 is the leacheate shower nozzle distributed architecture schematic diagram of this utility model figure patent.
In figure：1：Anode pH control rooms；2：Anode grug feeding jar；3：Leacheate storage chamber；4：Sour circulation fluid reserve room；5：Negative electrode
Grug feeding jar；6：Negative electrode pH control rooms；7：Anode chamber；8：Soil chamber；10：Cationic membrane；11：Cathode chamber；12：Cathode electrode；13：
Negative electrode pH probes；14：The subsidiary filter paper of hole dividing plate；15：Catholyte overfall；16：Catholyte feed tube；17：It is cloudy
Pole pump；19：Filter cloth；20：Quartz sand；21：Acid solution shower nozzle；22：Leacheate shower nozzle；23：Acid solution pipe；24：Anode pH probes；25：
Anode electrode；26：Aeration tube；27：Catholyte spillage elevator pump；28：Catholyte overfall；29：Anode pump；30：
Anolyte feed tube；31：Anode chemical feed pipe；32：Negative electrode chemical feed pipe；33：External power supply；34：Discharge pipeline；35：Sludge pump；
36：The anode chamber and the cathode chamber base；37：Anode pump control line；38：Negative electrode pump control line；39：Anolyte spillage riser；40：
Anode chamber；41：Cathode chamber；42：Interface in anode chamber；43：Anode chamber's lower interface；44：Interface in soil chamber；45：Under soil chamber
Interface；46：Interface on cathode chamber；47：Cathode chamber lower interface.
Specific embodiment
Specific embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing.
Implement a kind of above-mentioned nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck provided by the utility model and put ground
The device of soil, the device includes electro reclamation device and elution circuit；Its composition is：The electro reclamation device is to be located at
Cathode chamber 11 is provided with the leacheate shower nozzle 22 of elution circuit with the upper surface of soil chamber 8 of the centre of anode chamber 7, and by leacheate
Shower nozzle 22 sprays to soil chamber 8；The lower section of soil chamber 8 is provided with a track or conveyer belt is used for dividing for soil chamber 8
From to realize putting chromium slag muck the continuous repair of place soil.
Implementing a kind of elution circuit includes：The leacheate storage chamber 3 of storage nano Zero-valent Iron nickel bimetal suspension；Using the moon
Pole is electrolysed spillage elevator pump 27 and acid solution is stored in into sour circulation fluid reserve room 4；Through acid solution shower nozzle 21 and leacheate shower nozzle 22
In being sprayed into soil；Wherein leacheate shower nozzle 22 is evenly arranged in soil top；Acid solution shower nozzle 21 is evenly arranged near negative electrode
Soil top；Anode spillage is collected in sour fluid reservoir, is reused.
Implementing a kind of Electroremediation device includes：Anode pH control rooms 1 sense electrolyte pH by pH probes 24, by sun
Pole pump control line 37 controls anode pump 29 and pumps into anolyte to adjust pH；Anode grug feeding jar 2；Negative electrode grug feeding jar 5；Negative electrode pH is controlled
Room processed 6 senses electrolyte pH by negative electrode pH probes 13, controls negative electrode pump 17 by negative electrode pump control line 38 and pumps into catholyte
Adjust pH；Anode chamber 7；Soil chamber 8；Cationic membrane 10 prevents the OH- that negative electrode is produced from entering soil；Cathode chamber 11；For electrode 12
With 25；The subsidiary filter paper 14 of hole dividing plate, fixing soil, liquid and ion are passed freely through；What catholyte overfall 15 overflowed
Discharge after alkaline solution is up to standard Jing after processing；Catholyte enters pipeline 16；Filter cloth 19 and quartz sand 20 filter leacheate；Aeration
Pipe 26 plays stirring action；Catholyte overfall 28；Anolyte enters pipeline 30；Anode chemical feed pipe 31；Negative electrode dosing
Pipe 32；External power supply 33；Discharge pipeline 34, thus the precipitate that negative electrode is produced is excluded；Sludge pump 35；The anode chamber and the cathode chamber base 36.
The method for carrying out soil remediation using said apparatus, comprises the following steps that.
（1）The soil 8 of contaminated soil room will have been loaded by interface in the soil chamber interface 44 in soil chamber 8 and anode chamber
42nd, interface 46 connects on cathode chamber；The soil chamber lower interface 45 and anode chamber's lower interface 43 of soil chamber 8, cathode chamber lower interface 47
Connection；The two sides of soil chamber 8 are provided with the space dividing plate of attachment filter paper；Continuous processing contaminated soil can be realized.
（2）Electrolyte is pumped into respectively to cathode chamber and anode chamber, and negative electrode is iron nitrate solution, and anode is citric acid, Fructus Citri Limoniae
The organic acid such as acid-sodium citrate.
（3）Nano zero valence iron nickel bimetal suspension prepared by addition is provided with agitating device in leacheate storage chamber.
（4）After electrolysis, anode acidic electrolysis bath is stored in acid circulation storage chamber 4, is adjusted near negative electrode as sour leacheate
Soil pH.
（5）Add different chemical reagent according to the anode chamber and the cathode chamber not in the same direction of soil pollutant to increase removal effect, will change
Learn reagent to pump in anode grug feeding jar 2 and negative electrode grug feeding jar 5.
（6）Pass through in electrolytic process and negative electrode pH probes 13 and anode pH probes 24, detect the pH of the anode chamber and the cathode chamber electrolyte,
Pass to anode pH control rooms 1 and the control negative electrode of negative electrode pH control rooms 6 pump 17 and anode pump 29 pumps into buffer and adjusts electrolyte pH.
（7）Leacheate flows through filter cloth and quartz sand oozes out, and processes rear discharge up to standard；Catholyte spillage, reaches after process
Mark discharge.
（8）The precipitate that negative electrode is generated is discharged by sludge pump.
Specific embodiment of the present utility model is further illustrated below by embodiment.
Embodiment 1
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 30 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the FeCl of 3 mol/L3Solution, eluent concentration is 3 g/L, and experimental period is 144 h, using flame
Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：85.6%.
Embodiment 2
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 30 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the FeCl of 5 mol/L3Solution, eluent concentration is 3 g/L, and experimental period is 144h, former using flame
Son absorbs sends out the content of beary metal determined in soil sample；The clearance of chromium is：86.7%.
Embodiment 3
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 30 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the Fe of 3 mol/L2(SO4)3Solution, eluent concentration is 3 g/L, and experimental period is 144h, using fire
Flame Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：87.8%.
Embodiment 4
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 30 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the Fe of 3 mol/L2(SO4)3Solution, eluent concentration is 3 g/L, and experimental period is 144 h, using fire
Flame Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：89.1%.
Embodiment 5
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 30 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the Fe (NO of 3 mol/L3)3Solution, eluent concentration is 3 g/L, and experimental period is 144 h, using fire
Flame Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：86.9%.
Embodiment 6
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 30 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the Fe (NO of 5 mol/L3)3Solution, eluent concentration is 3 g/L, and experimental period is 144 h, using fire
Flame Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：88.3%.
Embodiment 7
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg.Voltage is 30 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the Fe (NO of 3 mol/L3)3Solution, eluent concentration is 5 g/L, and experimental period is 144 h, using fire
Flame Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：89.5%.
Embodiment 8
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 30 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the Fe (NO of 3 mol/L3)3Solution, eluent concentration is 7 g/L, and experimental period is 144 h, using fire
Flame Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：90.3%.
Embodiment 9
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 30 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the FeCl of 3 mol/L3Solution, eluent concentration is 5 g/L, and experimental period is 144 h, using flame
Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：88.7%.
Embodiment 10
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 30 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the FeCl of 3 mol/L3Solution, eluent concentration is 7 g/L, and experimental period is 144 h, using flame
Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：89.3%.
Embodiment 11
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 30 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the Fe of 3 mol/L2(SO4)3Solution, eluent concentration is 5 g/L, and experimental period is 144 h, using fire
Flame Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：90.5%.
Embodiment 12
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 30 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the Fe of 3 mol/L2(SO4)3Solution, eluent concentration is 7 g/L, and experimental period is 144 h, using fire
Flame Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：91.2%.
Embodiment 13
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 50 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the Fe (NO of 3 mol/L3)3Solution, eluent concentration is 3 g/L, and experimental period is 144 h, using fire
Flame Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：94.5%.
Embodiment 14
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 50 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the FeCl of 3 mol/L3Solution, eluent concentration is 3 g/L, and experimental period is 144 h, using flame
Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：91.4%.
Embodiment 15
A kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device on ground, and negative electrode and anode are graphite cake
The electrode of system, and negative pole respectively with power supply, positive pole be connected；Yin, yang pole room is 1 with the volumetric ratio of soil chamber：3；Take from chromium
Slag muck puts place soil, and its chromium concn is 150 mg/kg；Voltage is 50 V, and anolyte is the citric acid-citric acid of pH=3
Sodium buffer, negative electrode is the Fe of 3 mol/L2(SO4)3Solution, eluent concentration is 3 g/L, and experimental period is 144 h, using fire
Flame Atomic Absorption sends out the content of beary metal determined in soil sample；The clearance of chromium is：96.7%.
Examples detailed above is enumerate in concrete application several, and this utility model is not limited to this several specific enforcement
Scheme, one of ordinary skilled in the art in right of the present utility model, can make the tool of various ways
Body embodiment, these embodiments belong to protection domain of the present utility model.
Claims (6)
1. a kind of nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck put ground soil device, including electro reclamation device and
Elution circuit；It is characterized in that：The electro reclamation device includes cathode chamber（11）, anode chamber（7）With soil chamber（8）, and
Soil chamber（8）Upper surface be provided with the leacheate shower nozzle of elution circuit（22）, by leacheate shower nozzle（22）To soil chamber（8）
Sprayed；In soil chamber（8）Lower section be provided with a track or conveyer belt and be used to separate soil chamber（8）, to realize to chromium
Slag muck puts the continuous automatically controlled reparation of place soil；
The electro reclamation device is anode pH control rooms（1）By anode pH probes（24）Sensing electrolyte pH, by anode
Pump control line（37）Control anode pump（29）Anolyte is pumped into, and carries out the regulation of electrolyte pH；Negative electrode grug feeding jar（5）And
Negative electrode pH control rooms（6）By negative electrode pH probes (13）Sensing electrolyte ph, by negative electrode pump control line（38）Control negative electrode
Pump（17）Catholyte is pumped into, and carries out the regulation of electrolyte pH；Anode chamber（7）, soil chamber（8）, cathode chamber（11）, negative electrode
Electrode（12）And anode electrode（25）, respectively by the subsidiary filter paper of hole dividing plate（14）Separate, and pass freely through liquid and ion；
Cationic membrane（10）The OH for preventing negative electrode from producing-Into soil chamber（8）；Catholyte overfall（15）The alkaline solution of spilling
Discharge Jing after processing；By filter cloth（19）And quartz sand（20）Filter leacheate；Electrolysis unit also includes：Aeration tube（26）, it is cloudy
Pole electrolyte overfall（28）, anolyte feed tube（30）, anode chemical feed pipe（31）, negative electrode chemical feed pipe（32）, external electricity
Source（33）, discharge pipeline（34）, sludge pump（35）With the anode chamber and the cathode chamber base（36）；
The elution circuit is by leacheate storage chamber（3）Nano zero valence iron nickel bimetal suspension and sour circulation fluid reserve room
（4）In acid solution, respectively Jing leacheate shower nozzles（22）With acid solution shower nozzle（21）In being sprayed at soil；The leacheate shower nozzle（22）
It is to be uniformly arranged on soil chamber（8）Top；The acid solution shower nozzle（21）It is to be uniformly arranged near negative electrode soil top, it is described
Acid solution is anode spillage to be collected in sour fluid reservoir by elevator pump to be reused.
2. nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck according to claim 1 puts the device of ground soil, its
It is characterised by：The cathode chamber（11）Electrolyte be 0.02-10mol/L iron salt；The anode chamber（7）Electrolyte be pH
The citric acid-sodium citrate buffer solution of value 2-6；The leacheate is the nanometer Fe/Ni bimetallic suspensions of 0.05-10g/L.
3. nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck according to claim 2 puts the device of ground soil, its
It is characterised by：The iron salt is Fe2(SO4)3Or Fe (NO3)3、FeCl3。
4. according to claim 1 nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts the device of ground soil, and it is special
Levy and be：The cathode chamber（11）, anode chamber（7）With soil chamber（8）Volumetric ratio be 3: 3：5-50.
5. nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck according to claim 1 puts the device of ground soil, its
It is characterised by：The electrode is graphite electrode, and the supply voltage of graphite electrode is 5-50V.
6. nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck according to claim 1 puts the device of ground soil, its
It is characterised by：It is 36- that the nano zero valence iron nickel drip washing electromotion repairing technique chromium slag muck puts repair time of device of ground soil
300 hours.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621123537.8U CN206153283U (en) | 2016-10-15 | 2016-10-15 | Nanometer zero -valent iron nickel drip washing electrodynamics restores device that ground soil was put to chromium slag muck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621123537.8U CN206153283U (en) | 2016-10-15 | 2016-10-15 | Nanometer zero -valent iron nickel drip washing electrodynamics restores device that ground soil was put to chromium slag muck |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424107A (en) * | 2016-10-15 | 2017-02-22 | 太原理工大学 | Device of leaching and electrokinetically remediating chromium slag stacking place by nanometer zero-valent iron and nickel |
| WO2019218652A1 (en) * | 2018-05-18 | 2019-11-21 | 青岛理工大学 | Solar electrokinetic remediation apparatus for heavy metal contaminated soil |
| CN114774129A (en) * | 2022-03-29 | 2022-07-22 | 中冶南方都市环保工程技术股份有限公司 | Electrolyte for electrically repairing hexavalent chromium polluted soil and electric repairing method |
-
2016
- 2016-10-15 CN CN201621123537.8U patent/CN206153283U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424107A (en) * | 2016-10-15 | 2017-02-22 | 太原理工大学 | Device of leaching and electrokinetically remediating chromium slag stacking place by nanometer zero-valent iron and nickel |
| CN106424107B (en) * | 2016-10-15 | 2022-08-16 | 太原理工大学 | Device for electrokinetic remediation of chromium slag stacking place by leaching nano zero-valent iron and nickel |
| WO2019218652A1 (en) * | 2018-05-18 | 2019-11-21 | 青岛理工大学 | Solar electrokinetic remediation apparatus for heavy metal contaminated soil |
| CN114774129A (en) * | 2022-03-29 | 2022-07-22 | 中冶南方都市环保工程技术股份有限公司 | Electrolyte for electrically repairing hexavalent chromium polluted soil and electric repairing method |
| CN114774129B (en) * | 2022-03-29 | 2024-01-23 | 中冶南方都市环保工程技术股份有限公司 | Electrolyte for electrically repairing hexavalent chromium polluted soil and electrically repairing method |
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