CN108380656A - The processing unit of one heavy metal species soil and its application - Google Patents
The processing unit of one heavy metal species soil and its application Download PDFInfo
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- CN108380656A CN108380656A CN201810075342.8A CN201810075342A CN108380656A CN 108380656 A CN108380656 A CN 108380656A CN 201810075342 A CN201810075342 A CN 201810075342A CN 108380656 A CN108380656 A CN 108380656A
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- heavy metal
- soil
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- anode
- closed case
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
- B09C1/085—Reclamation of contaminated soil chemically electrochemically, e.g. by electrokinetics
Abstract
The present invention provides processing unit and its application of a heavy metal species soil, and the processing unit of the heavy metal soil includes closed case, activation carbon brush anode, carbon cloth air cathode, Bipolar Membrane, load resistance；The Bipolar Membrane is vertically arranged inside the closed case and will be divided into anode chamber and cathode chamber inside the closed case, the anode chamber is for housing the activation carbon brush anode and anolyte, and the cathode chamber is for housing the carbon cloth air cathode and soil；The activation carbon brush anode is connected outside the closed case by conducting wire with carbon cloth air cathode, and the load resistance is connected with the conducting wire.The device for the various heavy metal ion in soil can be enriched with and restore to the greatest extent with dystopy soil restoring technology, and operating process is simple, processing time is short.
Description
Technical field
The present invention relates to the processing units and its application of heavy metal treatment technology more particularly to a heavy metal species soil, belong to
In soil remediation technology field.
Background technology
Soil is human being's production and important material base of living.Plating, process hides, metallurgy, petrochemical industry and pesticide life
The industries such as production can generate the heavy metals such as a large amount of copper, chromium, nickel, lead, enter soil by approach such as irrigation, precipitation, atmospheric sedimentations.
Once contaminated, the ecological value, economic value, social value can not be played soil, not only directly result in land resources
Waste, will also endanger ecological safety and human health.According to statistics, arable land about 1.5 hundred million of the China by heavy metal pollutions such as cadmium, copper
Mu generates the grain of more than 1,000 ten thousand tons of heavy metal pollution every year, and direct economic loss is more than 20,000,000,000 yuan.
CN 104259198A disclose a kind of method of the hexavalent chromium polluted soil of in-situ immobilization heavy metal, utilize microorganism
Anode unit and cathode sets (being equipped with diaphragm) are embedded in contaminated soil by the advantages of fuel cell (MFC), and control process conditions are to inhaling
The heavy metal Cr VI for being attached to cathode sets is restored.
CN 104174648B disclose a kind of method and its special equipment of restoration of soil polluted by heavy metal, include mainly
Anode region, detoxification area, cathodic region.Anode region is made of anode and the microbial culture medium being seeded on anode；Cathodic region is by bearing
The carbon material of carried catalyst and buffering solution composition；Detoxification area is that sodium-chloride water solution separates with cathodic region filter membrane.It will be to be repaired
Multiple heavy-metal contaminated soil air-dries, and sieving obtains heavy metal polluted sludge, then by the aqueous sodium chloride in detoxification area after elution
Liquid replaces with heavy-metal contaminated soil solution, is repaired.
CN 107377608A disclose it is a kind of it is efficient removal acid soil in Cr VI microbial fuel cell unit and
Method, including porous carbon doping biomembrane anode and carbon felt cathode, the anode and cathode is spaced-apart to be embedded in Cr VI dirt
It connects in the acid soil of dye and by conducting wire, external load resistance, proton exchange membrane is laid between anode and cathode or is handed over without proton
Change film.Substrate in microorganism local use soil is as fuel, and the electronics of generation is gathered in anode, to the huge sum of money near anode
Belong to Cr VI to be restored, to promote the degradation and conversion of hexavalent chromium pollutant in acid soil.
As described above, although people have developed the method using microbiological fuel cell restoration of soil polluted by heavy metal,
There are some disadvantages, such as：1, method disclosed in CN104259198A and CN107377608A is only applicable to going for Cr VI
It removes, has certain limitation for the reparation of other heavy metals；2, method disclosed in CN104174648B is by heavy metal pollution
Heavy metal polluted sludge is obtained after soil elution, and the electric current that microbiological fuel cell generates is recycled to move heavy metal from mud
It moves on in catholyte, completes heavy-metal contaminated soil reparation.This method is complicated for operation, and heavy metal is in soil, mud and cathode water
It is migrated in body, there is no completely remove heavy metal from surrounding medium.
Invention content
The present invention provides the processing unit of a heavy metal species soil and its application, the device can be with dystopy soil remediation skills
Art is directed to the various heavy metal ion in soil and be enriched with and restore to the greatest extent, and operating process is simple, when processing
Between it is short.
The present invention provides the processing unit of a heavy metal species soil, including closed case, activation carbon brush anode, carbon cloth air
Cathode, Bipolar Membrane, load resistance；
The Bipolar Membrane is vertically arranged inside the closed case and will be divided into anode chamber inside the closed case
And cathode chamber, the anode chamber is for housing the activation carbon brush anode and anolyte, and the cathode chamber is for housing the carbon
Cloth air cathode and soil；
The activation carbon brush anode is connected outside the closed case by conducting wire with carbon cloth air cathode, the load
Resistance is connected with the conducting wire.
The processing unit of heavy metal soil as described above, wherein the activation carbon brush anode surface is attached with electricity production bacterium
The active layer of composition.
The processing unit of heavy metal soil as described above, wherein the anolyte is the mixture of following components：1g/L
Sodium acetate solution, the phosphate buffer solution of 50mmol/L, 12.5mL/L trace element solutions and 5mL/L vitamin solution.
The processing unit of heavy metal soil as described above, wherein the carbon cloth air cathode is fixed on institute by titanium silk
It states on the side wall of closed case.
The processing unit of heavy metal soil as described above, wherein the activation carbon brush anode and the closed case
Plane perpendicular.
The processing unit of heavy metal soil as described above, wherein the activation carbon brush anode and the closed case
Bottom surface is parallel.
The processing unit of heavy metal soil as described above, wherein the resistance value of the load resistance is 1-1500 Ω.
The processing unit of heavy metal soil as described above, wherein further include voltage detector, the voltage detector is used
Voltage on the detection load resistance.
The processing unit of heavy metal soil as described above, wherein the volume ratio of the anode chamber and cathode chamber is 1:4.
The present invention also provides a kind of application of processing unit of any of the above-described heavy metal soil in soil remediation.
The processing unit of the heavy metal soil of the present invention, electric field is generated by itself and drive heavy metal in soil from
The migration of son, since heavy metal ion is with positive charge, metal ion can be specifically as cathode side under the driving of electric field
It to migrating, and is enriched with and restores near cathode, wherein reduction potential can quilt higher than the heavy metal ion of anode potential
It restores and is precipitated on cathode, reduction potential can be enriched in the soil close to cathode less than the heavy metal ion of anode potential
In, by detaching the soil of enriching heavy metal ion with native soil, complete the processing to heavy metal soil.
The implementation of the present invention, at least has the advantage that：
1, the processing unit of heavy metal soil of the invention is simple in structure, under conditions of extraneous offer electric energy is not provided,
It can complete the enrichment to heavy metal in soil and reduction；
2, the processing unit of heavy metal soil of the invention just can be to weight in soil without the auxiliary of any chemical agent
Metal is handled, and is a kind of environmentally protective, inexpensive dystopy soil restoring technology；
3, the processing unit of heavy metal soil of the invention can not only carry out enrichment reduction to the heavy metal in soil, also
Other electrically charged pollutants in soil can be handled；
It is not only easy to operate when 4, carrying out repair process to soil using the processing unit of the heavy metal soil of the present invention,
And the repair process time is controllable.
Description of the drawings
Fig. 1 is the structural schematic diagram of one embodiment of processing unit of heavy metal soil of the present invention；
Fig. 2 is the structural schematic diagram of another embodiment of processing unit of heavy metal soil of the present invention；
Fig. 3 is the structural schematic diagram of the processing unit another embodiment of heavy metal soil of the present invention；
Fig. 4 is the curent change curve under the processing unit 1-2 working conditions of the embodiment of the present invention；
Fig. 5 is the processing unit 1-2 of the embodiment of the present invention and the processing unit 3-4 of reference examples to heavy metal soil treatment
Result schematic diagram.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the attached drawing of the present invention, to this hair
Technical solution in bright embodiment is clearly and completely described, it is clear that described embodiment is that a part of the invention is implemented
Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained under the premise of labour, shall fall within the protection scope of the present invention.
Fig. 1 is the structural schematic diagram of one embodiment of processing unit of heavy metal soil of the present invention, and Fig. 2 is heavy metal of the present invention
The structural schematic diagram of another embodiment of processing unit of soil.
As depicted in figs. 1 and 2, the processing unit of the heavy metal soil of the embodiment includes closed case 1, activation carbon brush sun
Pole 2, carbon cloth air cathode 3, Bipolar Membrane 4, load resistance 5；
The Bipolar Membrane 4 is vertically arranged at 1 inside of the closed case and will be divided into anode inside the closed case 1
Room 6 and cathode chamber 7, the anode chamber 6 is for housing the activation carbon brush anode 2 and anolyte, and the cathode chamber 7 is for housing
The carbon cloth air cathode 3 and soil；
The activation carbon brush anode 2 and carbon cloth air cathode 3 are connected outside the closed case 1 by conducting wire 8, described
Load resistance 5 is connected with the conducting wire 8.
Wherein, closed case 1 provides the place of processing for soil, and the present invention does not limit the size of closed case 1,
The size of closed case 1 can carry out adaptability matching according to pending soil volume.
Bipolar Membrane 4 is vertically installed in inside closed case 1, and the inner space of closed case 1 is divided into the horizontal direction
Two spaces without connected relation.It is anode chamber for accommodating activation carbon brush anode 2 and anolyte in the two spaces
6, it is cathode chamber 7 for housing carbon cloth air cathode 3 and pending soil.
Activate the connection of carbon brush anode 2 and carbon cloth air cathode 3 by conducting wire 8 in the outside of closed case 1.Specifically,
One end of conducting wire 8 passes through closed case 1 to enter anode chamber 6 and is connect with activation carbon brush anode 2, and the other end of conducting wire 8 is across closed
Babinet 1 is connect with carbon cloth air cathode 3 into cathode chamber 7, so as to complete carbon brush anode 2 and carbon cloth air cathode 3 is activated
Connection, forms closed circuit.Conducting wire 8 is also connected with load resistance 5 simultaneously.Wherein, conducting wire 8 can be crocodile clip conducting wire.
It should be pointed out that before the processing unit using the heavy metal soil, need to inject anode into anode chamber 6
Liquid, and pending soil is put into cathode chamber 7, wherein anolyte is a kind of solution containing organic matter.
Specifically, due to pushing the electronics of entire processing unit operation generated by the anolyte in anode chamber 6, because
This, in order to ensure the present invention heavy metal soil processing unit good operation, anolyte of the invention can be：1g/L second
Acid sodium solution, the phosphate buffer solution of 50mmol/L, trace element solution (12.5mL/L) and vitamin solution (5mL/L).
Wherein, the composition of trace element solution is as shown in table 1, and the composition of vitamin solution is as shown in table 2.
1 trace element solution concentration of table forms
| Ingredient | Concentration (g/L) |
| NTA | 1.5 |
| MgSO4 | 3 |
| MnSO4·H2O | 0.5 |
| NaCl | 1 |
| FeSO4·7H2O | 0.1 |
| CaCl2·2H2O | 0.1 |
| CoCl2·6H2O | 0.1 |
| ZnCl2 | 0.13 |
| CuSO2·5H2O | 0.01 |
| AlK(SO4)2·12H2O | 0.01 |
| H3BO3 | 0.01 |
| Na2MoO4 | 0.025 |
| NiCl2·6H2O | 0.024 |
| Na2WO4·2H2O | 0.025 |
The composition of 2 vitamin solution of table
Other than above-mentioned composition, anolyte of the invention can also be biodegradable organic wastewater.
Hereinafter, the processing unit operation principle of the heavy metal soil of the present embodiment is introduced.
After injecting anolyte to anode chamber 6 and being put into pending soil to cathode chamber 7, the microbes in anolyte
Decomposing organic matter, so that organic matter betatopic is occurred, oxidation reaction generates carbon dioxide and water, the electrons lost are activated carbon brush
Anode 2 conducts and enters cathode chamber 7, after electronics enters cathode chamber 7, the oxygen in cathode chamber 7 as conducting wire 8 leaves anode chamber 6
It can obtain electronics and reduction reaction generation water occurs.That is, oxidation reaction has occurred in anode chamber 6, cathode chamber 7 is restored
Reaction has different potential differences so as to cause activation carbon brush anode 2 and carbon cloth air cathode 3, this just makes to generate between the two poles of the earth
Electric field and direction of an electric field are to be directed toward carbon cloth air cathode 3 from activation carbon brush anode 2.
Under the action of the potential difference, the positively charged heavy metal ion of soil can be along electric field line side in cathode chamber 7
It is migrated to carbon cloth air cathode 3, makes the content of heavy metal ion distribution gradient in the soil, apart from carbon cloth air cathode 3
The content of more close then heavy metal ion is higher.
Specifically, if the reduction potential of heavy metal ion is higher than anode potential, such heavy metal ion can be come from
Electronics in anode chamber 6 occurs reduction reaction and is precipitated on carbon cloth air cathode 3, completes the reduction of such heavy metal ion
It is precipitated, that is, such heavy metal ion is detached with soil；If the reduction potential of heavy metal ion is less than anode potential, such huge sum of money
It though belonging to ion will not be restored, can be enriched in around carbon cloth air cathode 3, that is, be enriched in close to carbon cloth air cathode
In 3 soil, the soil by will be close to carbon cloth air cathode 3 is detached with native soil, then complete heavy metal with soil
Separation.So far, the device of the invention can will be weighed in the case where not adding outer plus electric energy with low cost and dystopy processing mode
Metal is separated from soil, completes the repair process to soil.
It is envisioned that the device of the invention can also be to carrying positive charge other than heavy metal ion in soil
Any pollutant carries out separating treatment.
The electronics generated in anode chamber 6 is transferred into carbon cloth by conducting wire 8 in order to preferably promote to activate carbon brush anode 2
Air cathode 3, activation carbon brush anode 2 of the invention is the active layer that surface is attached with electricity production bacterium composition, so as to enhance it
Electric conductivity.
Before the processing unit using the heavy metal soil of the present invention, need sequentially to start the cleaning processing carbon brush anode
And activation process, that is, removal carbon brush anode surface impurity forms electricity production bacterium attachment.
The cleaning treatment includes：After carbon brush anode is sequentially impregnated in acetone, peroxy-disulfuric acid amine and sulfuric acid respectively, 450
DEG C fire, the carbon brush anode after being cleaned.
Specifically, carbon brush anode is impregnated at least 12h in acetone soln first, then in the ammonium peroxydisulfate of 200g/L
15min is impregnated in the mixed liquor of the concentrated sulfuric acid of 100mL/L, after taking-up, with distilled water flushing three times, finally in 450 DEG C of horse
Not fire 30min in stove loads positive charge on final carbon brush anode, the carbon brush anode after being cleaned.
The activation process includes：Carbon brush anode after cleaning is connect by the conducting wire equipped with resistance with carbon cloth air cathode
Afterwards, carbon brush anode and carbon cloth air cathode are immersed in the anolyte containing anaerobic sludge (wherein, the matter of anaerobic sludge jointly
Amount is the 20-50% of anolyte quality), after 1-5 weeks, accompanying by the active layer that carbon brush anode surface is formed by electricity production bacterium, obtain
Activate carbon brush anode 2.
In addition, the needs of carbon cloth air cathode 3 of the present invention are prepared via a method which to obtain：Carbon cloth cathode is cut into first
The PTFE of 20mg carbon dusts and 240uL 40% are uniformly mixed the side for being applied to disk, are put into 370 by the disk of a diameter of 3.8cm
DEG C Muffle furnace in fire 25min.After taking-up, then four layer 60% of PTFE solution is applied successively, in 370 DEG C of horse after being painted with every time
Not 10~15min of fire in stove.Finally by 60mg Pt/C catalyst, 50uL water, 400uL Nafion solutions and 200uL isopropyls
It is applied to another side surface of carbon cloth cathode after alcohol mixing, in air naturally dry, it is empty to finally obtain the required carbon cloth of the present invention
Gas cathode 3.
Further, carbon cloth air cathode 3 is fixed on especially by titanium silk on the side wall of closed case 1.Wherein, the side wall
Refer to the short transverse of closed case 1 and the side that width direction is constituted.Since the carbon cloth air cathode 3 of the present invention is round
Shape, therefore 3 one faces of the carbon cloth air cathode are bonded setting with above-mentioned side wall completely.
On the basis of the above, the activation carbon brush anode 2 of heavy metal soil of the present invention can have following two mounting means：
The first：As shown in Figure 1, the plane perpendicular of Activation Activation carbon brush anode 2 and closed case 1.
That is, using the height of closed case 1 as reference, activation carbon brush anode 2 be with 1 height side of closed case
The inside of closed case 1 is set to parallel direction.
When activation carbon brush anode 2 is set to closed case 1 in a manner of with the plane perpendicular of closed case 1, Ke Yitong
Spend the processing time for adjusting the distance controlling of activated carbon brush anode 2 and carbon cloth air cathode 3 to heavy metal in soil.Specifically,
Activation carbon brush anode 2 is smaller at a distance from carbon cloth air cathode 3, and interior resistance is smaller, and system electric current just will increase, in soil
The rate that heavy metal is migrated to carbon cloth air cathode 3 increases, and further shortens the processing time of soil.
Second：As shown in Fig. 2, activation carbon brush anode 2 is parallel with the bottom surface of closed case 1.
That is, using the height of closed case 1 as reference, activation carbon brush anode 2 be with 1 height side of closed case
The inside of closed case 1 is set to vertical direction.
When activation carbon brush anode 2 is set to closed case 1 in a manner of parallel with the bottom surface of closed case 1, Ke Yitong
Processing time of the distance controlling to heavy metal in soil of the bottom end and carbon cloth air cathode 3 that adjust activated carbon brush anode 2 is spent,
In, the bottom end of activation carbon brush anode 2 refers to that one end not connect with conducting wire 8.Specifically, the bottom end of activation carbon brush sun grade 2 with
The distance of carbon cloth air cathode 3 is smaller, and interior resistance is smaller, and system electric current just will increase, to which heavy metal in soil is empty to carbon cloth
The rate that gas cathode 3 migrates increases, and further shortens the processing time of soil.
The present invention is not limited in the mounting means that carbon brush anode 2 is activated in the processing unit of specific heavy metal soil.
Further, the resistance value of load resistance of the invention is 1-1500 Ω.
Wherein, the processing time of heavy metal in soil can also be controlled by controlling the resistance value size of load resistance
System.Specifically, the resistance value of load resistance is smaller, and system electric current just will increase, to which heavy metal in soil is to carbon cloth air cathode 3
The rate of migration increases, and further shortens the processing time of soil.But to avoid short circuit the case where, occurs, and bears
1 Ω must not be less than by carrying the resistance value of resistance.
Fig. 3 is the structural schematic diagram of the processing unit another embodiment of heavy metal soil of the present invention, in above-described embodiment
On the basis of, as shown in figure 3, the processing unit of the heavy metal soil of the present invention further includes voltage detector.Wherein, Fig. 3 is in Fig. 1
Shown on the basis of embodiment.
It is because the microorganism in anolyte is to having in anolyte since the anolyte in anode chamber 6 can generate electronics
Machine object is aoxidized and is obtained, and after a period of time has passed, the organic matter in anolyte is exhausted, to cause occur
Oxidation reaction generates the case where electronics.
In order to avoid the generation of the above situation, can voltage inspection be set in the processing dress of the heavy metal soil of the present invention
Device 9 is surveyed, to detect the voltage between carbon brush sun grade 2 and carbon cloth air cathode 3.When the organic matter in anolyte is exhausted
Afterwards, carbon brush sun grade 2 and the electric current of carbon cloth air cathode 3 will reduce, and will then be reflected by voltage detector 9.When
When the voltage detected is less than or equal to 20mV, supplement replacement can be carried out to anolyte, the microorganism in guarantee anolyte is just
Normal metabolism growth.
Further, since cathode chamber 7 is for placing pending soil, it can be to cathode chamber 7 and anode chamber 6
Volume be defined.In general, the volume ratio of anode chamber 6 and cathode chamber 7 is 1:4.
Furthermore it is noted that the soil placed in cathode chamber 7 needs for water saturated soil, i.e., in soil to have
Saturation moisture.
Further, the size of activation carbon brush anode 2 and carbon cloth air cathode 3 can according to the volume of closed case 1 into
Row adaptability limits.
Device through the invention can carry out dystopy improvement to the soil containing pollutants such as heavy metals, specifically, will
Pending soil is put into cathode chamber 7, and anolyte is filled with anode chamber 6, with the progress of oxidation reaction in anolyte, loses
Electronics will be transferred to by activating carbon brush anode 2 and conducting wire 8 in cathode chamber 7, in activation carbon brush anode 2 and carbon cloth air cathode
The potential difference for being directed toward carbon cloth air cathode 3 is generated between 3.Under the action of the potential difference, the weight with positive charge in soil
Metal ion can be migrated to carbon cloth air cathode 3, wherein the high heavy metal ion of reduction potential can be on carbon cloth air cathode 3
Reduction is precipitated, and the low heavy metal ion of reduction potential can be enriched in the soil of carbon cloth air cathode 3, by will be close to
The soil of carbon cloth air cathode 3 is detached with native soil, completes heavy metal clear operation, to be handled pending soil
Restore.
Hereinafter, utilizing the processing unit of heavy metal soil shown in Fig. 3 and the processing unit counterweight of reference examples in the present invention
The soil of metallic pollution carries out processing improvement, wherein cathode in the processing unit of reference examples is not connected with anode, remaining and this
The processing unit of invention is identical.
Take the processing unit of identical two heavy metal soil of the invention, number 1,2.
Take the processing unit of the heavy metal soil of identical two reference examples, number 3,4.
Wherein, the dimensions of the closed case of aforementioned four processing unit is 14cm*5cm*5cm, respectively to four sun
Anolyte is filled in pole room, anolyte is the mixture of following components：The phosphate-buffered of 1g/L sodium acetate solutions, 50mmol/L
Solution, 12.5mL/L trace element solutions and 5mL/L vitamin solution.Wherein trace element solution and vitamin solution be respectively such as
Shown in Tables 1 and 2.
It is put into the cathode chamber of processing unit 1 containing Cd2+Soil, be put into the cathode chamber of processing unit 2 containing Cu2+
Soil, be put into the cathode chamber of processing unit 3 containing Cd2+Soil, be put into the cathode chamber of processing unit 1 containing Cu2+'s
Soil, wherein the Cd in the cathode chamber of processing unit 12+Concentration and the Cd in the cathode chamber of processing unit 32+Concentration is identical, place
Manage the Cu in the cathode chamber of device 22+Concentration and the Cu in the cathode chamber of processing unit 42+Concentration is identical.
The anode and cathode of processing unit 1 and 2 is separately connected, the voltage change of detection process device 1-2, and when voltage is examined
Survey device in voltage be less than 20mV when, to anode chamber supplement anolyte, after 49 days, to the ion concentration in processing unit 1-4 into
Row detection.Fig. 4 is the curent change curve under the processing unit 1-2 working conditions of the embodiment of the present invention.
Specifically, 3 sample tap S1-S3 are respectively opened up on the top of the cathode chamber of processing unit 1-4, wherein S1 and anode
Vertical range be 2cm, the vertical range of S2 and anode is 4cm, and the vertical range of S3 and anode is 6cm.
Ion concentration detection is carried out from 3 sample tap S1-S3 samplings in device 1-4 respectively, as a result sees Fig. 5.Fig. 5 is this
Result schematic diagrams of the processing unit 1-2 of the inventive embodiments and processing unit 3-4 of reference examples to heavy metal soil treatment.
Following result can be obtained by Fig. 5：
In the processing unit 1-2 of the embodiment of the present invention, the heavy metal ion in soil corresponding to 3 sample tap S1-S3
Concentration is sequentially increased, therefore can prove that the device of the invention can be handled the soil containing heavy metal ion, is realized
The enrichment and reduction of heavy metal in soil ion.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. the processing unit of a heavy metal species soil, which is characterized in that including closed case, activation carbon brush anode, carbon cloth air
Cathode, Bipolar Membrane, load resistance；
The Bipolar Membrane is vertically arranged inside the closed case and will be divided into anode chamber and the moon inside the closed case
Pole room, for housing the activation carbon brush anode and anolyte, the cathode chamber is empty for housing the carbon cloth for the anode chamber
Gas cathode and soil；
The activation carbon brush anode is connected outside the closed case by conducting wire with carbon cloth air cathode, the load resistance
It connects with the conducting wire.
2. the processing unit of heavy metal soil according to claim 1, which is characterized in that the activation carbon brush anode surface
It is attached with the active layer of electricity production bacterium composition.
3. the processing unit of heavy metal soil according to claim 1, which is characterized in that the anolyte is following components
Mixture：1g/L sodium acetate solutions, the phosphate buffer solution of 50mmol/L, 12.5mL/L trace element solutions and 5mL/L
Vitamin solution.
4. the processing unit of heavy metal soil according to claim 1, which is characterized in that the carbon cloth air cathode passes through
Titanium silk is fixed on the side wall of the closed case.
5. the processing unit of heavy metal soil according to claim 4, which is characterized in that the activation carbon brush anode and institute
State the plane perpendicular of closed case.
6. the processing unit of heavy metal soil according to claim 4, which is characterized in that the activation carbon brush anode and institute
The bottom surface for stating closed case is parallel.
7. the processing unit of heavy metal soil according to claim 5 or 6, which is characterized in that the electricity of the load resistance
Resistance value is 1-1500 Ω.
8. the processing unit of heavy metal soil according to claim 1, which is characterized in that further include voltage detector, institute
Voltage detector is stated for detecting the voltage on the load resistance.
9. the processing unit of heavy metal soil according to claim 1, which is characterized in that the anode chamber and cathode chamber
Volume ratio is 1:4.
10. application of the processing unit of any heavy metal soil of claim 1-9 in soil remediation.
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| CN110510709A (en) * | 2019-08-06 | 2019-11-29 | 东华大学 | A kind of removable Cd2+Primary battery and its application |
| CN110947751A (en) * | 2019-12-13 | 2020-04-03 | 华中科技大学 | Device and method for restoring cadmium-polluted soil through electric auxiliary leaching |
| CN110967388A (en) * | 2018-09-30 | 2020-04-07 | 深圳市北京大学深圳研究院分析测试中心有限公司 | Soil heavy metal in-situ monitor |
| CN112845559A (en) * | 2021-01-05 | 2021-05-28 | 清华大学 | System and method for deep layering treatment of heavy metal contaminated soil |
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| 杨政伟等: "土壤微生物燃料电池的研究进展及展望", 《化工学报》 * |
| 高淑红: "Shewanella oneidensis-MR-1生物阴极对酸性橙7的还原脱色效果及机制研究", 《中国优秀硕士论文全文数据库工程科技I辑》 * |
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| CN110967388A (en) * | 2018-09-30 | 2020-04-07 | 深圳市北京大学深圳研究院分析测试中心有限公司 | Soil heavy metal in-situ monitor |
| CN110510709A (en) * | 2019-08-06 | 2019-11-29 | 东华大学 | A kind of removable Cd2+Primary battery and its application |
| CN110947751A (en) * | 2019-12-13 | 2020-04-03 | 华中科技大学 | Device and method for restoring cadmium-polluted soil through electric auxiliary leaching |
| CN110947751B (en) * | 2019-12-13 | 2021-07-02 | 华中科技大学 | Device and method for restoring cadmium-polluted soil through electric auxiliary leaching |
| CN112845559A (en) * | 2021-01-05 | 2021-05-28 | 清华大学 | System and method for deep layering treatment of heavy metal contaminated soil |
| CN112845559B (en) * | 2021-01-05 | 2022-07-19 | 清华大学 | System and method for deep layering treatment of heavy metal contaminated soil |
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