CN106694530A - Multi-stage heavy metal-contaminated soil restoration method - Google Patents
Multi-stage heavy metal-contaminated soil restoration method Download PDFInfo
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- CN106694530A CN106694530A CN201611111702.2A CN201611111702A CN106694530A CN 106694530 A CN106694530 A CN 106694530A CN 201611111702 A CN201611111702 A CN 201611111702A CN 106694530 A CN106694530 A CN 106694530A
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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
- B09C1/10—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
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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
Abstract
The invention discloses a multi-stage heavy metal-contaminated soil restoration method. The multi-stage heavy metal-contaminated soil restoration method comprises the following steps that (1) heavy metal is absorbed through a plant restoration technology, specifically, soil is loosened and plowed, a deep pit is dug every one meter, the pits are 10-15 cm deep, seedlings of plants having high heavy metal enrichment capacity are selected and cultivated, then the seedlings are planted into the deep pits and watered for irrigation, people shall pay attention to prevention and treatment of plant diseases and insect pests in the growth period of the seedlings and remove weeds regularly, a chelating agent starts to be applied to the soil after the seedlings enter the stable growth stage, the chelating agent is applied once every 30-50 days, the plants are harvested after being mature, planting is carried out for two years continuously, and accordingly first-stage restoration is completed; and (2) residual heavy metal in the soil is subjected to passivating treatment, specifically, a passivating agent is applied for second-stage restoration, and the soil can directly achieve agricultural utilization after second-stage restoration is completed. The passivating agent is mainly composed of, by weight, biological carbon, organic fertilizers, animal bone meal, modified straw and quick lime.
Description
Technical field
The invention belongs to environmental protection technical field, a kind of multistage reparation side of heavy-metal contaminated soil is specifically related to
Method.
Background technology
Used as large agricultural country, about 95,720,000 hectares of agricultural land area accounts for the 7.7% of world total cultivated area for China, with
The development of modern agricultural technology, China has broken away from the Agriculture Production Modes lived at the mercy of the elements already, and it is new that scientific and technological progress brings
Emerging Agriculture Production Modes bring big breakthrough for the economic development of China, but the soil environment problem for causing therewith is also increasingly tight
Weight, including the blindness of chemical fertilizer is used, and the indirectly-acting of industrial development pollutant all makes soil environment meet with acid test.
Heavy metal pollution of soil problem has turned into global environmental problem, and its good concealment and periodicity are long, to Environment-Ecosystem
Huge threat is constituted, can not only cause the decline of the yield and quality of crops, can also be by the conduction effects mankind of food
Health.According to statistics, China receives the contaminated soil area of heavy metal Cd, Cr, Ni, Zn, Cu, Au, Se, Pb etc. up to more than 2,000 ten thousand
Hectare, its grain contamination for causing every year drastically influence the economic development of the life security and China of the people.
In recent years, improvement of the China to contaminated soil is increasingly paid attention to, current administering method mainly have by heavy metal from
Valence state and form of the heavy metal in soil are removed and changed in soil, to reduce its animal migration and biological effectiveness, including are changed
Learn repairing method, biological restoration and phytoremediation etc., although all with certain repairing effect, but also bring simultaneously
Additional problem, chemical restoration easily brings secondary pollution, simple biological restoration and phytoremediation remediation efficiency mistake
It is low, the especially soil of centering serious pollution, therefore need one kind effective, secondary pollution is small, clearance recovery technique method high
To realize the reparation of heavy metal pollution of soil.
The content of the invention
Present invention solves the technical problem that being to provide a kind of multistage restorative procedure of heavy-metal contaminated soil.
Technical scheme is as follows：
A kind of multistage restorative procedure of heavy-metal contaminated soil, comprises the following steps：
(1) Metal uptake is carried out using phytoremediation technology, concrete operations are as follows：First soil loosen the soil turning over,
At interval of dell is dug down at 1 meter, depth 10-15cm is cheated, the plant that choosing heavy metal has stronger accumulation ability carries out seedling culture
Afterwards, plant in dell, watering Irrigation, seedling growth stage notes the preventing and treating of pest and disease damage, and periodically remove weeds, grown at it
Start, to chelating agent is applied in soil, a chelating agent to be poured at interval of 30-50 days after seedling stationary phase, treat mature plant growth
Gathered in afterwards, continuous plantation 2 years completes one-level reparation；
(2) treatment is passivated to remaining heavy metal in soil again, the processing method is to apply passivator, carries out two grades
Repair, the soil after being repaired through two grades can be directly used for agricultural；The passivator is mainly and is composed of the following components in parts by weight：
Charcoal 30-50 parts, organic fertilizer 28-46 parts, animal bone powder 25-43 parts, modified straw 22-40 parts, quick lime 12-27 parts.
Further, the preparation method of passivator is in the step (2)：
A. the organic fertilizer is carried out into harmful substance removal of impurities treatment：After collecting fresh animal excrement, plus four times of amount water dilutions,
1h is extracted with the acetone reflux that 8-10 times of concentration measured is 70%, filtrate is discarded after membrane filtration, obtain filter residue, it is standby；
B. taking animal bone will boil 5h after its pulverization process, with ball mill grinding into powder after high temperature drying, cross 160-200
Mesh sieve, it is standby；
C. the modified straw is to take maize straw, peanut straw, cotton stalk, by its with:2：1.5:2 ratio mixing
Scoriform is ground into after dried process, it 10h is impregnated into the ammoniacal liquor that the mass concentration of quintuple is 21%, and adopt in last 6min
With the microwave irradiation that power is 550W, it is washed with deionized water again takes off to pH between 7-7.5 afterwards, after drying and processing, i.e.,
Modified straw is obtained, it is standby；
D. added after mixing above-mentioned charcoal, organic fertilizer, animal bone powder, modified straw, quick lime in the ratio
15% water carries out making compost 30-40h, the as described passivator for being passivated heavy metal in soil in composting tank.
Further, the organic fertilizer is cow dung, chicken manure, sheep manure, pig manure from animal-breeding, can be with arbitrary proportion
It is used in mixed way, containing the harmful substance that secondary pollution is caused to soil in animal fresh excreta, therefore need to be to it before in excrement
Carry out removal of impurities treatment, processing method is in step (1) shown in a.
Further, the plant planted in the phytoremediation technology is Indian mustard and arabidopsis.Heavy metal has
Accumulation ability higher, is mainly used in the reparation of Cd, Cr, Ni, Zn, Cu, Au, Se, Pb heavy metal soil.
Further, the chelating agent is S, and S- EDDSs, citric acid and EDTA's is used in mixed way, and uses matter
Amount ratio is：7:3:1, during addition chelating agent, citric acid is first added, it is little on soil pH influence, adds in proportion again after 3 hours
Enter S, S- EDDSs are fast with degraded, and EDTA, activation capacity are added after the advantage of non-secondary pollution, then 4 hours
By force, the control of its usage amount can reduce the secondary pollution of soil.
Further, the concentration of the chelating agent is 15-20mmol/kg, and in 4-6, this scope can be realized for regulation pH controls
The optimal absorption of heavy metal.
Further, the passivator is mainly used in the passivation and reparation of the soil containing Pb, Cd, Cu, Zn heavy metal.
Further, the Indian mustard is transgenosis Indian mustard, is to lead to the metallothionein polypeptide in animal body
Cross transgenic technology to be transferred in Indian mustard, its absorbability to metal can be improved.
Further, the Indian mustard and arabidopsis are rotated and plant a wheel, first plant Indian mustard, after it is gathered in again
Plantation arabidopsis, can absorb, soil pollution better processing effect to various heavy in soil.
Further, soil of the multistage restorative procedure mainly for middle severe heavy metal pollution.
The beneficial effects of the invention are as follows：The present invention is main to be applicable using multistage restorative procedure restoration of soil polluted by heavy metal
In middle serious pollution soil, Metal uptake first is carried out with phytoremediation technology, the plant strong by planting heavy metal accumulation ability
Thing coordinates the use of chelating agent again, can effectively absorb the heavy metal in soil, then place is passivated to contaminated soil with passivator
Reason, the passivator good stability can effectively reduce migration and the biological effectiveness of heavy metal, and two methods are used cooperatively, can
Influence by heavy metal to soil and crop is reduced to minimum degree.
Specific embodiment
Embodiment 1：
A kind of multistage restorative procedure of heavy-metal contaminated soil, comprises the following steps：
(1) Metal uptake is carried out using phytoremediation technology, concrete operations are as follows：First soil loosen the soil turning over,
At interval of dell is dug down at 1 meter, depth 10cm is cheated, after the plant that choosing heavy metal has stronger accumulation ability carries out seedling culture,
Plant in dell, watering Irrigation, seedling growth stage notes the preventing and treating of pest and disease damage, and periodically remove weeds, children is grown at it
Start, to chelating agent is applied in soil, a chelating agent to be poured at interval of 30 days after seedling stationary phase, after general after mature plant growth
Its harvesting, continuous plantation 2 years, completes one-level reparation；
(2) treatment is passivated to remaining heavy metal in soil again, the processing method is to apply passivator, carries out two grades
Repair, the soil after being repaired through two grades can be directly used for agricultural；The passivator is mainly and is composed of the following components in parts by weight：
30 parts of charcoal, 28 parts of organic fertilizer, 25 parts of animal bone powder, 22 parts of modified straw, 12 parts of quick lime.
The preparation method of the passivator is：
A. the organic fertilizer is carried out into harmful substance removal of impurities treatment：After collecting fresh animal excrement, plus four times of amount water dilutions,
Concentration with 8 times of amounts is 70% acetone reflux extraction 1h, and filtrate is discarded after membrane filtration, obtains filter residue, standby；
B. taking animal bone will boil 5h after its pulverization process, with ball mill grinding into powder after high temperature drying, cross 160 mesh
Sieve, it is standby；
C. the modified straw is to take maize straw, peanut straw, cotton stalk, by it with 2：1.5:2 ratio mixing
Scoriform is ground into after dried process, it 10h is impregnated into the ammoniacal liquor that the mass concentration of quintuple is 21%, and adopt in last 6min
With the microwave irradiation that power is 550W, it is washed with deionized water again takes off to pH 7 afterwards, after drying and processing, obtains final product modified straw
Stalk, it is standby；
D. added after mixing above-mentioned charcoal, organic fertilizer, animal bone powder, modified straw, quick lime in the ratio
15% water carries out making compost 30h, the as described passivator for being passivated heavy metal in soil in composting tank.
Wherein, the organic fertilizer is cow dung, chicken manure, sheep manure, pig manure from animal-breeding, can be mixed with arbitrary proportion
Use, the harmful substance that secondary pollution is caused to soil is contained in animal fresh excreta, therefore it need to be carried out before in excrement
Removal of impurities is processed, and processing method is in step (1) shown in a；The plant planted in the phytoremediation technology is Indian mustard and plan
Southern mustard.Heavy metal has accumulation ability higher, is mainly used in repairing for Cd, Cr, Ni, Zn, Cu, Au, Se, Pb heavy metal soil
It is multiple；The chelating agent is S, and S- EDDSs, citric acid and EDTA's is used in mixed way, and use quality ratio is：7:3:
1, during addition chelating agent, citric acid is first added, it is little on soil pH influence, is proportionally added into S, S- ethylenediamines after 3 hours again
Disuccinic acid, it is fast with degraded, EDTA is added after the advantage of non-secondary pollution, then 4 hours, activation capacity is strong, its usage amount
Control can reduce the secondary pollution of soil；The concentration of the chelating agent is 15mmol/kg, and 4, this scope can be real for regulation pH controls
The optimal absorption of existing heavy metal；The passivator is mainly used in the passivation and reparation of the soil containing Pb, Cd, Cu, Zn heavy metal；
The Indian mustard is transgenosis Indian mustard, is that the metallothionein polypeptide in animal body is transferred into print by transgenic technology
In degree leaf mustard, its absorbability to metal can be improved；The Indian mustard and arabidopsis are rotated and plant a wheel, first plant India
Leaf mustard, after arabidopsis is planted again after its harvesting, can absorb to various heavy in soil, and soil pollution treatment effect is more
It is good；Soil of the multistage restorative procedure mainly for middle severe heavy metal pollution.
Embodiment 2：
A kind of multistage restorative procedure of heavy-metal contaminated soil, comprises the following steps：
(1) Metal uptake is carried out using phytoremediation technology, concrete operations are as follows：First soil loosen the soil turning over,
At interval of dell is dug down at 1 meter, depth 12.5cm is cheated, the plant that choosing heavy metal has stronger accumulation ability carries out seedling culture
Afterwards, plant in dell, watering Irrigation, seedling growth stage notes the preventing and treating of pest and disease damage, and periodically remove weeds, grown at it
Start, to chelating agent is applied in soil, a chelating agent to be poured at interval of 40 days, after after mature plant growth after seedling stationary phase
Gathered in, continuous plantation 2 years completes one-level reparation；
(2) treatment is passivated to remaining heavy metal in soil again, the processing method is to apply passivator, carries out two grades
Repair, the soil after being repaired through two grades can be directly used for agricultural；The passivator is mainly and is composed of the following components in parts by weight：
40 parts of charcoal, 37 parts of organic fertilizer, 34 parts of animal bone powder, 31 parts of modified straw, 19.5 parts of quick lime.
The preparation method of the passivator is：
A. the organic fertilizer is carried out into harmful substance removal of impurities treatment：After collecting fresh animal excrement, plus four times of amount water dilutions,
Concentration with 9 times of amounts is 70% acetone reflux extraction 1h, and filtrate is discarded after membrane filtration, obtains filter residue, standby；
B. taking animal bone will boil 5h after its pulverization process, with ball mill grinding into powder after high temperature drying, cross 180 mesh
Sieve, it is standby；
C. the modified straw is to take maize straw, peanut straw, cotton stalk, by it with 2：1.5:2 ratio mixing
Scoriform is ground into after dried process, it 10h is impregnated into the ammoniacal liquor that the mass concentration of quintuple is 21%, and adopt in last 6min
With the microwave irradiation that power is 550W, it is washed with deionized water again takes off to pH 7.3 afterwards, after drying and processing, obtains final product modified
Stalk, it is standby；
D. added after mixing above-mentioned charcoal, organic fertilizer, animal bone powder, modified straw, quick lime in the ratio
15% water carries out making compost 35h, the as described passivator for being passivated heavy metal in soil in composting tank.
Wherein, the organic fertilizer is cow dung, chicken manure, sheep manure, pig manure from animal-breeding, can be mixed with arbitrary proportion
Use, the harmful substance that secondary pollution is caused to soil is contained in animal fresh excreta, therefore it need to be carried out before in excrement
Removal of impurities is processed, and processing method is in step (1) shown in a；The plant planted in the phytoremediation technology is Indian mustard and plan
Southern mustard.Heavy metal has accumulation ability higher, is mainly used in repairing for Cd, Cr, Ni, Zn, Cu, Au, Se, Pb heavy metal soil
It is multiple；The chelating agent is S, and S- EDDSs, citric acid and EDTA's is used in mixed way, and use quality ratio is：7:3:
1, during addition chelating agent, citric acid is first added, it is little on soil pH influence, is proportionally added into S, S- ethylenediamines after 3 hours again
Disuccinic acid, it is fast with degraded, EDTA is added after the advantage of non-secondary pollution, then 4 hours, activation capacity is strong, its usage amount
Control can reduce the secondary pollution of soil；The concentration of the chelating agent is 17.5mmol/kg, and 5, this scope can for regulation pH controls
Realize the optimal absorption of heavy metal；The passivator is mainly used in the passivation of the soil containing Pb, Cd, Cu, Zn heavy metal and repaiies
It is multiple；The Indian mustard is transgenosis Indian mustard, is to turn the metallothionein polypeptide in animal body by transgenic technology
Enter in Indian mustard, its absorbability to metal can be improved；The Indian mustard and arabidopsis are rotated and plant a wheel, are first planted
Indian mustard, after arabidopsis is planted again after its harvesting, can absorb, soil pollution treatment effect to various heavy in soil
More preferably；Soil of the multistage restorative procedure mainly for middle severe heavy metal pollution.
Embodiment 3：
A kind of multistage restorative procedure of heavy-metal contaminated soil, comprises the following steps：
(1) Metal uptake is carried out using phytoremediation technology, concrete operations are as follows：First soil loosen the soil turning over,
At interval of dell is dug down at 1 meter, depth 15cm is cheated, after the plant that choosing heavy metal has stronger accumulation ability carries out seedling culture,
Plant in dell, watering Irrigation, seedling growth stage notes the preventing and treating of pest and disease damage, and periodically remove weeds, children is grown at it
Start, to chelating agent is applied in soil, a chelating agent to be poured at interval of 50 days after seedling stationary phase, after general after mature plant growth
Its harvesting, continuous plantation 2 years, completes one-level reparation；
(2) treatment is passivated to remaining heavy metal in soil again, the processing method is to apply passivator, carries out two grades
Repair, the soil after being repaired through two grades can be directly used for agricultural；The passivator is mainly and is composed of the following components in parts by weight：
50 parts of charcoal, 46 parts of organic fertilizer, 43 parts of animal bone powder, 40 parts of modified straw, 27 parts of quick lime.
The preparation method of the passivator is：
A. the organic fertilizer is carried out into harmful substance removal of impurities treatment：After collecting fresh animal excrement, plus four times of amount water dilutions,
Concentration with 10 times of amounts is 70% acetone reflux extraction 1h, and filtrate is discarded after membrane filtration, obtains filter residue, standby；
B. taking animal bone will boil 5h after its pulverization process, with ball mill grinding into powder after high temperature drying, cross 200 mesh
Sieve, it is standby；
C. the modified straw is to take maize straw, peanut straw, cotton stalk, by it with 2：1.5:2 ratio mixing
Scoriform is ground into after dried process, it 10h is impregnated into the ammoniacal liquor that the mass concentration of quintuple is 21%, and adopt in last 6min
With the microwave irradiation that power is 550W, it is washed with deionized water again takes off to pH 7.5 afterwards, after drying and processing, obtains final product modified
Stalk, it is standby；
D. added after mixing above-mentioned charcoal, organic fertilizer, animal bone powder, modified straw, quick lime in the ratio
15% water carries out making compost 40h, the as described passivator for being passivated heavy metal in soil in composting tank.
Wherein, the organic fertilizer is cow dung, chicken manure, sheep manure, pig manure from animal-breeding, can be mixed with arbitrary proportion
Use, the harmful substance that secondary pollution is caused to soil is contained in animal fresh excreta, therefore it need to be carried out before in excrement
Removal of impurities is processed, and processing method is in step (1) shown in a；The plant planted in the phytoremediation technology is Indian mustard and plan
Southern mustard.Heavy metal has accumulation ability higher, is mainly used in repairing for Cd, Cr, Ni, Zn, Cu, Au, Se, Pb heavy metal soil
It is multiple；The chelating agent is S, and S- EDDSs, citric acid and EDTA's is used in mixed way, and use quality ratio is：7:3:
1, during addition chelating agent, citric acid is first added, it is little on soil pH influence, is proportionally added into S, S- ethylenediamines after 3 hours again
Disuccinic acid, it is fast with degraded, EDTA is added after the advantage of non-secondary pollution, then 4 hours, activation capacity is strong, its usage amount
Control can reduce the secondary pollution of soil；The concentration of the chelating agent is 20mmol/kg, and 6, this scope can be real for regulation pH controls
The optimal absorption of existing heavy metal；The passivator is mainly used in the passivation and reparation of the soil containing Pb, Cd, Cu, Zn heavy metal；
The Indian mustard is transgenosis Indian mustard, is that the metallothionein polypeptide in animal body is transferred into print by transgenic technology
In degree leaf mustard, its absorbability to metal can be improved；The Indian mustard and arabidopsis are rotated and plant a wheel, first plant India
Leaf mustard, after arabidopsis is planted again after its harvesting, can absorb to various heavy in soil, and soil pollution treatment effect is more
It is good；Soil of the multistage restorative procedure mainly for middle severe heavy metal pollution.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
Modified with to the technical scheme described in previous embodiment, or equivalent is carried out to which part technical characteristic；And
These modifications are replaced, and do not make the spirit and model of the essence disengaging embodiment of the present invention technical scheme of appropriate technical solution
Enclose.
Claims (10)
1. the multistage restorative procedure of a kind of heavy-metal contaminated soil, it is characterised in that comprise the following steps：
(1) Metal uptake is carried out using phytoremediation technology, concrete operations are as follows：First soil loosen the soil turning over, every
Dell is dug down at 1 meter, depth 10-15cm is cheated, after the plant that choosing heavy metal has stronger accumulation ability carries out seedling culture, planted
Enter in dell, watering Irrigation, seedling growth stage notes the preventing and treating of pest and disease damage, and periodically remove weeds, seedling is grown at it
Start, to chelating agent is applied in soil, a chelating agent to be poured at interval of 30-50 days after stationary phase, after general after mature plant growth
Its harvesting, continuous plantation 2 years, completes one-level reparation；
(2) treatment is passivated to remaining heavy metal in soil again, the processing method is to apply passivator, carries out two grades and repaiies
Multiple, the soil after being repaired through two grades can be directly used for agricultural；The passivator is mainly and is composed of the following components in parts by weight：It is raw
30-50 parts, organic fertilizer 28-46 parts, animal bone powder 25-43 parts, modified straw 22-40 parts, quick lime 12-27 parts of thing charcoal.
2. a kind of multistage restorative procedure of the heavy-metal contaminated soil according to claim requirement 1, is characterised by, described
(2) preparation method of passivator is in：
A. the organic fertilizer is carried out into harmful substance removal of impurities treatment：After collecting fresh animal excrement, plus four times of amount water dilutions, with 8-
The concentration of 10 times of amounts is 70% acetone reflux extraction 1h, and filtrate is discarded after membrane filtration, obtains filter residue, standby；
B. taking animal bone will boil 5h after its pulverization process, with ball mill grinding into powder after high temperature drying, cross 160-200 mesh
Sieve, it is standby；
C. the modified straw is to take maize straw, peanut straw, cotton stalk, by its with:2：1.5:2 ratio combination drying
Scoriform is ground into after treatment, it 10h is impregnated into the ammoniacal liquor that the mass concentration of quintuple is 21%, and work(is used in last 6min
Rate is the microwave irradiation of 550W, is washed with deionized water again takes off to pH between 7-7.5 afterwards, after drying and processing, obtains final product and changes
Property stalk, it is standby；
D. 15% is added after mixing above-mentioned charcoal, organic fertilizer, animal bone powder, modified straw, quick lime in the ratio
Water carries out making compost 30-40h, the as described passivator for being passivated heavy metal in soil in composting tank.
3. a kind of multistage restorative procedure of the heavy-metal contaminated soil according to claim requirement 1, is characterised by, described to have
Machine fertilizer is cow dung, chicken manure, sheep manure, pig manure from animal-breeding, can be used in mixed way with arbitrary proportion.
4. a kind of multistage restorative procedure of heavy-metal contaminated soil according to claim 1, it is characterised in that the plant
The plant planted in recovery technique is Indian mustard and arabidopsis.
5. a kind of multistage restorative procedure of heavy-metal contaminated soil according to claim 1, it is characterised in that the chelating
Agent is S, and S- EDDSs, citric acid and EDTA's is used in mixed way.
6. a kind of multistage restorative procedure of heavy-metal contaminated soil according to claim 1, it is characterised in that the chelating
The concentration of agent is 15-20mmol/kg, and regulation pH controls are in 4-6.
7. a kind of multistage restorative procedure of heavy-metal contaminated soil according to claim 1, it is characterised in that the passivation
Agent is mainly used in the passivation and reparation of the soil containing Pb, Cd, Cu, Zn heavy metal.
8. a kind of multistage restorative procedure of heavy-metal contaminated soil according to claim 1, it is characterised in that the India
Leaf mustard is transgenosis Indian mustard, is that the metallothionein polypeptide in animal body is transferred into Indian mustard by transgenic technology
In.
9. a kind of multistage restorative procedure of heavy-metal contaminated soil according to claim 1, it is characterised in that the India
Leaf mustard and arabidopsis are rotated and plant a wheel, first plant Indian mustard, and arabidopsis is planted again after it is gathered in.
10. the multistage restorative procedure of a kind of heavy-metal contaminated soil according to claim 1, it is characterised in that described many
Soil of the level restorative procedure mainly for middle severe heavy metal pollution.
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| CN107497836A (en) * | 2017-08-04 | 2017-12-22 | 郭婷 | effective heavy metal soil remediation method |
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| CN108517212A (en) * | 2018-02-02 | 2018-09-11 | 吴洪生 | A kind of soil heavy metal combined pollution eluant, eluent production method and application |
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| CN110369478A (en) * | 2018-04-13 | 2019-10-25 | 陈淡宁 | The method for comprehensive repairing of heavy-metal contaminated soil |
| CN110523762A (en) * | 2019-08-20 | 2019-12-03 | 北京上水环境科技发展有限公司 | A kind of administering method of alkaline land soil heavy metal pollution |
| CN110698290A (en) * | 2019-11-04 | 2020-01-17 | 昆明学院 | Modifier for planting tobacco in acidic and cadmium-polluted soil |
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