CN109158412A - A kind of method of harmless treatment heavy metal soil - Google Patents
A kind of method of harmless treatment heavy metal soil Download PDFInfo
- Publication number
- CN109158412A CN109158412A CN201810667276.3A CN201810667276A CN109158412A CN 109158412 A CN109158412 A CN 109158412A CN 201810667276 A CN201810667276 A CN 201810667276A CN 109158412 A CN109158412 A CN 109158412A
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- metal soil
- carbon black
- nano carbon
- harmless treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 92
- 239000002689 soil Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000006229 carbon black Substances 0.000 claims abstract description 48
- 229910021392 nanocarbon Inorganic materials 0.000 claims abstract description 43
- 239000000203 mixture Substances 0.000 claims abstract description 32
- 244000166124 Eucalyptus globulus Species 0.000 claims abstract 5
- 230000004888 barrier function Effects 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 125000000524 functional group Chemical group 0.000 claims description 5
- 238000002513 implantation Methods 0.000 claims description 5
- 230000004048 modification Effects 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 5
- 239000002105 nanoparticle Substances 0.000 claims description 5
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 229910052793 cadmium Inorganic materials 0.000 abstract description 4
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 229910052745 lead Inorganic materials 0.000 abstract description 4
- 229910052725 zinc Inorganic materials 0.000 abstract description 4
- 238000005067 remediation Methods 0.000 abstract description 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 241000219927 Eucalyptus Species 0.000 description 11
- 239000007789 gas Substances 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 229910052786 argon Inorganic materials 0.000 description 3
- 238000002386 leaching Methods 0.000 description 3
- 239000012495 reaction gas Substances 0.000 description 3
- 238000003556 assay Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 238000003971 tillage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mycology (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Botany (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of methods of harmless treatment heavy metal soil, contain various heavy in heavy metal soil, the exceeded heavy metal of content includes Cu, Cd, Pb, Zn, modified Nano carbon black is added in heavy metal soil by the present invention, and it is uniformly mixed so as to obtain heavy metal soil mixture, then heavy metal soil mixture is sprayed, the moisture content for controlling heavy metal soil mixture is 30 ~ 50%, then eucalyptus is planted on heavy metal soil mixture, eucalyptus adsorbs the heavy metal in heavy metal soil mixture, material and reagent used by the method for the present invention are relatively easy to get and will not cause secondary pollution to environment, heavy metal exceeded in soil can be effectively removed, compensate for the technology vacancy of harmless treatment heavy metal soil, heavy metal soil remediation is achieved the purpose that.
Description
Technical field
The present invention relates to a kind of methods of harmless treatment heavy metal soil, belong to environmental technology field.
Background technique
With the continuous development of industrial technology level, heavy metal pollution of soil is on the rise, and pollution sources are mainly a huge sum of money
Industrial residue, industrial wastewater and Industry Waste caused by Shu Xuan factory, heavy metal smeltery and heavy metal use and processing industry
Gas.Different types of heavy metal soil, characteristic trait have biggish difference, and the final process Disposal Measures taken should also have
Targetedly.The basic principle of heavy-metal contaminated soil disposal technology mainly has solidification and activation at present, surrounds this
Two aspects, correspondingly propose physics, chemistry and bioremediation technology.
Summary of the invention
It is an object of the invention to propose that a kind of method of harmless treatment heavy metal soil, the present invention use modified Nano
Carbon black is modified heavy metal soil, then plants eucalyptus, and heavy metal in soil is transferred in eucalyptus tissue.Compensate for nothing
Evilization handles the technology vacancy of heavy metal soil, has achieved the purpose that heavy metal soil remediation.
The technical scheme is that a kind of method of harmless treatment heavy metal soil, the specific steps are as follows:
(1) dielectric barrier discharge method modified Nano carbon black is used first: nano carbon black is delivered in dielectric barrier discharge device,
In plasma discharge processes, nano-particle carbon passes through region of discharge, and plasma modification occurs, makes the specific surface of carbon black
Long-pending and surface roughness increases and introduces oxygen-containing or nitrogen-containing functional group in carbon blacksurface, then by modified nano carbon black
It is separated with unmodified nano carbon black, obtains the water-soluble and stronger modified Nano carbon black of heavy metal adsorption；
(2) the modified Nano carbon black that step (1) obtains is added in heavy metal soil, and is uniformly mixed so as to obtain the mixing of heavy metal soil
Then body sprays heavy metal soil mixture, the moisture content of control heavy metal soil mixture is 30 ~ 50%, then exists
Eucalyptus is planted on heavy metal soil mixture, eucalyptus adsorbs the heavy metal in heavy metal soil mixture.
Medium discharge-blocking device is dielectric barrier discharge plasma apparatus in the step (1), and nano carbon black conveying makes
Use screw-feeder.
Dielectric barrier discharge method modified Nano carbon black carries out at normal temperatures and pressures in the step (1).
The mass ratio of modified Nano carbon black and heavy metal soil is 0.5 ~ 1.5:100 in step (2), mixes and uses rotary tillage
Machine.
One eucalyptus of every square metre of plantation on heavy metal soil mixture in step (2), implantation time are 10 ~ 30 days.
Purity >=95% of nano carbon black in the step (1).
The beneficial effects of the present invention are:
Method flow of the invention is relatively simple, and used material and reagent are relatively easy to get and will not cause to environment secondary
Pollution, can effectively remove heavy metal exceeded in soil, compensate for the technology vacancy of heavy metal soil remediation, reached harmless
Change the purpose of removal heavy metal in soil.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1: as shown in Figure 1, the method for this harmless treatment heavy metal soil, the specific steps are as follows:
(1) dielectric barrier discharge method modified Nano carbon black is used first: the nano carbon black (purity 95%) of buying is passed through into spiral
Feeder is delivered in dielectric barrier discharge device, and the stream of reaction gas air, argon gas in electric discharge device is adjusted by flowmeter
Amount, in plasma discharge processes, nano-particle carbon passes through region of discharge, and plasma modification occurs, makes the ratio of carbon black
Surface area and surface roughness increase and introduce oxygen-containing or nitrogen-containing functional group in carbon blacksurface, after being modified 15min, close electricity
Source increases gas flow, then modified nano carbon black is separated with unmodified nano carbon black, obtains water solubility and again
The stronger modified Nano carbon black of metal adsorption ability, modifying process carry out under 25 DEG C, 1 atmospheric pressure；
(2) the modified Nano carbon black that step (1) obtains is added in heavy metal soil, wherein modified Nano carbon black and heavy metal
The mass ratio of soil is 0.5:100, and is uniformly mixed so as to obtain heavy metal soil mixture, is then sprayed to heavy metal soil mixture
Leaching, the moisture content of control heavy metal soil mixture are 30%, then every square metre of plantation one on heavy metal soil mixture
Eucalyptus, implantation time are 10 days, and eucalyptus adsorbs the heavy metal in heavy metal soil mixture.
It takes the resulting heavy metal soil mixture sample of step (2) to carry out assay, obtains going for each heavy metal in soil
Except rate is as shown in table 1, by the heavy metal soil that the method for the present invention is handled, the wherein removal rate point of heavy metal Cu, Cd, Pb, Zn
Not Wei rate be 78.31%, 73.22%, 76.13%, 74.88%.
Table 1
Embodiment 2:(1) dielectric barrier discharge method modified Nano carbon black is used first: by the nano carbon black (purity 97%) of buying
Be delivered in dielectric barrier discharge device by screw-feeder, and by flowmeter adjust electric discharge device in reaction gas air,
The flow of argon gas, in plasma discharge processes, nano-particle carbon passes through region of discharge, and plasma modification occurs, makes
The specific surface area and surface roughness of carbon black increase and introduce oxygen-containing or nitrogen-containing functional group, modified 25min in carbon blacksurface
Afterwards, power supply is closed, gas flow is increased, then modified nano carbon black is separated with unmodified nano carbon black, obtains
The water-soluble and stronger modified Nano carbon black of heavy metal adsorption, modifying process carry out under 25 DEG C, 1 atmospheric pressure；
(2) the modified Nano carbon black that step (1) obtains is added in heavy metal soil, wherein modified Nano carbon black and heavy metal
The mass ratio of soil is 0.8:100, and is uniformly mixed so as to obtain heavy metal soil mixture, is then sprayed to heavy metal soil mixture
Leaching, the moisture content of control heavy metal soil mixture are 40%, then every square metre of plantation one on heavy metal soil mixture
Eucalyptus, implantation time are 20 days, and eucalyptus adsorbs the heavy metal in heavy metal soil mixture.
It takes the resulting heavy metal soil mixture sample of step (2) to carry out assay, obtains going for each heavy metal in soil
Except rate is as shown in table 2, by the heavy metal soil that the method for the present invention is handled, the wherein removal rate point of heavy metal Cu, Cd, Pb, Zn
Not Wei rate be 82.09%, 79.81%, 81.01%, 79.68%.
Table 2
Embodiment 3:(1) dielectric barrier discharge method modified Nano carbon black is used first: by the nano carbon black (purity 99%) of buying
Be delivered in dielectric barrier discharge device by screw-feeder, and by flowmeter adjust electric discharge device in reaction gas air,
The flow of argon gas, in plasma discharge processes, nano-particle carbon passes through region of discharge, and plasma modification occurs, makes
The specific surface area and surface roughness of carbon black increase and introduce oxygen-containing or nitrogen-containing functional group, modified 35min in carbon blacksurface
Afterwards, power supply is closed, gas flow is increased, then modified nano carbon black is separated with unmodified nano carbon black, obtains
The water-soluble and stronger modified Nano carbon black of heavy metal adsorption, modifying process carry out under 25 DEG C, 1 atmospheric pressure；
(2) the modified Nano carbon black that step (1) obtains is added in heavy metal soil, wherein modified Nano carbon black and heavy metal
The mass ratio of soil is 1.5:100, and is uniformly mixed so as to obtain heavy metal soil mixture, is then sprayed to heavy metal soil mixture
Leaching, the moisture content of control heavy metal soil mixture are 50%, then every square metre of plantation one on heavy metal soil mixture
Eucalyptus, implantation time are 30 days, and eucalyptus adsorbs the heavy metal in heavy metal soil mixture.
The results are shown in Table 3 for the present embodiment, by the method handle heavy metal soil, wherein heavy metal Cu, Cd,
The removal rate of Pb, Zn are respectively that rate is 82.89%, 80.01%, 80.62%, 79.58%.
Table 3
In conjunction with attached drawing, the embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned implementations
Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention
Various changes can be made.
Claims (6)
1. a kind of method of harmless treatment heavy metal soil, which is characterized in that specific step is as follows:
(1) dielectric barrier discharge method modified Nano carbon black is used first: nano carbon black is delivered in dielectric barrier discharge device,
In plasma discharge processes, nano-particle carbon passes through region of discharge, and plasma modification occurs, makes the specific surface of carbon black
Long-pending and surface roughness increases and introduces oxygen-containing or nitrogen-containing functional group in carbon blacksurface, then by modified nano carbon black
It is separated with unmodified nano carbon black, obtains the water-soluble and stronger modified Nano carbon black of heavy metal adsorption；
(2) the modified Nano carbon black that step (1) obtains is added in heavy metal soil, and is uniformly mixed so as to obtain the mixing of heavy metal soil
Then body sprays heavy metal soil mixture, the moisture content of control heavy metal soil mixture is 30 ~ 50%, then exists
Eucalyptus is planted on heavy metal soil mixture, eucalyptus adsorbs the heavy metal in heavy metal soil mixture.
2. the method for harmless treatment heavy metal soil according to claim 1, it is characterised in that: in the step (1)
Dielectric barrier discharge device is dielectric barrier discharge plasma apparatus, and nano carbon black conveying uses screw-feeder.
3. the method for harmless treatment heavy metal soil according to claim 1, it is characterised in that: in the step (1)
Dielectric barrier discharge method modified Nano carbon black carries out at normal temperatures and pressures.
4. the method for harmless treatment heavy metal soil according to claim 1, it is characterised in that: modified in step (2)
The mass ratio of nano carbon black and heavy metal soil is 0.5 ~ 1.5:100, mixes and uses rotary cultivator.
5. the method for harmless treatment heavy metal soil according to claim 1, it is characterised in that: a huge sum of money in step (2)
One eucalyptus of every square metre of plantation on dependent territory earth mixture, implantation time are 10 ~ 30 days.
6. the method for harmless treatment heavy metal soil according to claim 1, it is characterised in that: in the step (1)
Purity >=95% of nano carbon black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810667276.3A CN109158412A (en) | 2018-06-26 | 2018-06-26 | A kind of method of harmless treatment heavy metal soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810667276.3A CN109158412A (en) | 2018-06-26 | 2018-06-26 | A kind of method of harmless treatment heavy metal soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109158412A true CN109158412A (en) | 2019-01-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810667276.3A Pending CN109158412A (en) | 2018-06-26 | 2018-06-26 | A kind of method of harmless treatment heavy metal soil |
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| Country | Link |
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| CN (1) | CN109158412A (en) |
Cited By (2)
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| CN110511083A (en) * | 2019-09-09 | 2019-11-29 | 湖南鑫恒环境科技有限公司 | A kind of farm leaves waste destruction agent and preparation method thereof |
| CN113058989A (en) * | 2021-03-16 | 2021-07-02 | 苏州益亮生态修复有限公司 | Method for restoring farmland polluted by heavy metals |
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