CN106475405A - Using charcoal and the method for chelating agent fortification of plants restoration of soil polluted by heavy metal - Google Patents
Using charcoal and the method for chelating agent fortification of plants restoration of soil polluted by heavy metal Download PDFInfo
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- CN106475405A CN106475405A CN201611082891.5A CN201611082891A CN106475405A CN 106475405 A CN106475405 A CN 106475405A CN 201611082891 A CN201611082891 A CN 201611082891A CN 106475405 A CN106475405 A CN 106475405A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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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
- B09C2101/00—In situ
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Abstract
A kind of method that the present invention discloses utilization charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal, the method are comprised the following steps：(1) charcoal base manure is mixed in heavy metal mine tailing matrix prepare cultivation matrix；(2) planting plants in cultivation matrix；(3) apply chelating agent after planting 60～75 days in cultivation matrix.Environmental friendliness of the present invention, low cost, non-secondary pollution, workable, and fostering and apply fertilizer for mine tailing soil can be promoted to improve with quality while heavy metal pollution is reduced.
Description
Technical field
The present invention relates to a kind of method of utilization charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal.
Background technology
In metal mine recovery process, grind through Mechanical Crushing, after screening wherein valuable mineral matter, the solid of discharge
Residue waste is mine tailing.According to statistics, about 8,000,000,000 tons of the gross reserves of the current mine tailing of China, and increased with 10% speed rapidly every year
Long.In the presence of weathering, rain-out and biological factor, the mine tailing release plurality of heavy metal unit of exposed stacking for a long time
The acid waste water that containing sulfur minerals cause in element, residual floating agent and barren rock, to the soil around mining area, surface water and underground
Water, atmospheric environment etc. can cause serious harm.Meanwhile, occupancy of the Tailings Dam to land resource, exacerbate what China had a large population and a few land
Contradiction, constrains social economic development of region and ecological environment security.
Mine tailing Heavy Metal Pollution Control method mainly has three classes at present：Gongwu method, chemical regulation method, biological prosthetic
Method.Research is more, reduces heavy metal pollution of mine by this green bio reactor of plant, and plant utilizes its root system
And rhizosphere microorganism to the Metal uptake in mine tailing or soil, volatilization, conversion, fixation and reach removal purpose.Certainly
So boundary, exists and much has adaptive plant to mine tailing environment, and these plants become in Tailings Dam discarded ground clear-cutting forestland
Pionner, the accumulation ability that their heavy metal show are often more than 100 times of common plant, common for a huge sum of money
The rehabilitation plant of category contaminated soil has Sedum alfredii Hance (Zn), Viola baoshanensis (Cd), ciliate desert-grass (As), native chaste tree shepherd's purse (Pb), Hai Zhouxiang
Ru (Cu) etc..Phytoremediation technology low cost, workable, mine content of beary metal not only can be reduced, can also be increased
Vegetative coverage, effectively solving mine soil corrode, soil erosion the problems such as, also therefore become the head of Mine Abandoned Land pollution control
Selecting technology.Cogongrass is perennial herbaceous plant, and existence and fertility are extremely strong, because of its powerful complicated root system system,
In the barren environment of arid also can growth and breeding, thus frequently as the pionner that mining area is recovered.
However as research deeply, it has been found that the biological effectiveness of heavy metal in soil is relatively low, limits phytoremediation
The development further of technology.Therefore, the biological effectiveness for how increasing heavy metal in the soil liquid becomes raising phytoremediation effect
The focus of rate research.Using means such as microorganism or chelating agents, heavy metal ion is activated, to improve plant for some researchs
The uptake of heavy metal element.Chelating agent material can make the heavy metal that solid phase of soil bond is closed discharge again and enter soil
Solution, becomes solubilised state or easy solvent, so as to effectively improve absorption or the bioaccumulation efficiency of plant heavy metal.As citric acid, grass
The natural small molecule organic acid such as acid, malic acid, can increase the work of metal ion by forming soluble complexes with metal ion
Property and mobility.Different chelating agents are different to the activation of variety classes heavy metal, and such as EDTA (ethylenediamine tetra-acetic acid) is to Pb
Activation capacity most strong, and EDDS (EDDS) is stronger to the activation capacity of Cu.It can be seen that, heavy metal and chelating agent it
Between exist selective, the reasonable selection of chelating agent for can fortification of plants repairing effect there is important effect.Different chelatings
Being applied in combination of agent, it is also possible to significantly improve the absorption efficiency of plant extract heavy metal.
China is large agricultural country, has abundant agricultural crop straw and forest tree resource, and annual stalk yield is 800,000,000 tons, such as
What rationally becomes focus of concern using agriculture and forestry organic waste material.Research finds, by the charcoal of forest and agricultural biomass pyrolysis preparation,
Which all has application potential in terms of soil improvement, reduction of greenhouse gas discharge and contaminated soil remediation.Charcoal pore structure is sent out
Reach, specific surface area is big and has abundant oxygen-containing functional group, and heavy metal unit have stronger adsorption capacity.Additionally, charcoal energy
Enough soil pH value is improved, containing multiple mineral elements, in mine tailing heavy metal pollution phytoremediation, can carry for the growth of pionner
For nutrition.In heavy metal pollution Disused tailing land environment, for charcoal and chelating agent fortification of plants repairing heavy metal pollution
Research few, correlative study can administer offer technical support for heavy metal polluted soil.
Content of the invention
For the problems referred to above, the present invention provides the utilization charcoal of content of beary metal and chelating in a kind of effective reduction mine tailing
The method of agent fortification of plants restoration of soil polluted by heavy metal.
For reaching above-mentioned purpose, the present invention is a kind of to utilize charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal
Method, the method comprises the following steps：
(1) charcoal base manure is mixed in heavy metal mine tailing matrix prepare cultivation matrix；
(2) planting plants in cultivation matrix；
(3) apply chelating agent after planting 60～75 days in cultivation matrix.
Preferably, further comprising the steps of before step (1)：
(1) charcoal is prepared；
(2) charcoal and fertilizer are mixed with charcoal base manure.
Preferably, the concrete steps of step (3)：After cogongrass is planted 60～75 days, concentration is 5～20mmol/L's
EDTA, EDDS or lemon acid sequestering agent are applied in cultivation matrix.
Preferably, the charcoal preparation method is comprised the following steps：
(1) forest and agricultural biomass of collection is cleaned post-drying with water and salt solution to crush；
(2) the broken forest and agricultural biomass is put in retort and is filled with the anoxybiotic filling casing of protective gas,
Pyrolysis charring 4～8 hours under the conditions of 300 DEG C～700 DEG C；
(3) carbonization product obtained after processing pyrolysis charring is cooled to room temperature.
Preferably, the preparation method of the charcoal base manure is comprised the following steps：
(1) 50～80 mesh sieves were crushed charcoal；
(2) according to 25～40 parts of charcoal, 20～30 parts of dry pig manure, 8～15 parts of urea, 10～20 parts of calcium magnesium phosphate, chlorine
Change 5～10 parts of mixing of potassium, prepare charcoal base manure.
Preferably, the heavy metal pollution mine tailing is iron magnesium type mine tailing；The heavy metal pollution mine tailing includes serpentine
Mine tailing, olivine tailing mine and magnetic iron ore mine tailing；By the different iron magnesium type mine tailing matrix and charcoal base manure according to 5～8:
1 mass ratio mixes as cultivation matrix.
Preferably, also comprising the following steps after step (3)：
(1) plant after expiring, the content of beary metal in mine tailing matrix soil is measured；
(2) content of beary metal is not being repaired if being not higher than predetermined value in the mine tailing matrix soil；If mine tailing substrate soil
In earth, the content of heavy metal then returns the step (1) higher than predetermined value.
The present invention due to employing above technical scheme, with significant technique effect：
1. cogongrass is used as important pionner type, plants that difficulty is low, and growth is rapid, and population density is high, it is adaptable to big
Area is planted, it is not necessary to special management；As non-consumption plant, heavy metal element can be prevented effectively from and enter food chain.Cogongrass
In adaptation and the enrichment and growth of Disused tailing land, can not only beautify mining area ecological environment, also help mine tailing soil productivity
Lifting.
2. organic and inorganic fertilizer is compounded using charcoal, prepare environment friendly biological charcoal base manure, be applied to heavy metal pollution mine tailing
Reparation, its technique and application process be simple, and production cost is relatively low；Not only reduce that forest and agricultural biomass is unreasonable to be banked up to environment
The pollution effect for causing, can also bring good economic results in society.The basicity that biomass carbon has in itself, effectively can drop
The acidity of low Disused tailing land, its aggregation absorption to nutrient and heavy metal, growth and the heavy metal of plant can be promoted
The absorption of element, improves soil environment quality.
3. in plant vigorous growth period, using EDTA, EDDS or lemon acid sequestering agent, to the heavy metal in mine tailing matrix
Activated, to promote the absorption of rehabilitation plant heavy metal.Now, plant has accumulated larger biomass, and transpiration is stronger,
Can be enriched with short time and transfer is compared with multi-metal, the administration of higher concentration chelating agent can also be avoided to cause dunsiekte
Phenomenon.Using chelating agent fortification of plants repair, be an inexpensive ecological reestablishment, with repaired on a large scale a huge sum of money
The application prospect of category contaminated soil.
Description of the drawings
Fig. 1 is the method flow diagram of the embodiment of the present invention 1；
Fig. 2 is cogongrass biomass under the plantation of dissimilar mine tailing matrix；
Fig. 3 is heavy metal accumulation content in cogongrass plant body under the plantation of dissimilar mine tailing matrix；
In figure S is serpentine type mine tailing, and O is olivine-type mine tailing, and M is magnetic iron ore type mine tailing.
Specific embodiment
With reference to Figure of description, the present invention will be further described.
A kind of utilization charcoal of the present invention and the method for chelating agent fortification of plants restoration of soil polluted by heavy metal, the method bag
Include following steps：(1) charcoal base manure is mixed in heavy metal mine tailing matrix prepare cultivation matrix；(2) plant in cultivation matrix
Plant plant；(3) apply chelating agent after planting 60～75 days in cultivation matrix.
It is femic type by the mine tailing of heavy metal pollution, based on serpentine, olivine and magnetic iron ore, Cr, Mn, Ni, Zn
And the content of the heavy metal element such as Cu is higher.
Embodiment 1
As shown in figure 1, the present embodiment is using serpentine type femic mine tailing as cultivation matrix.
Concrete steps：Forest and agricultural biomass is collected, is air-dried and crushes, under the conditions of 300 DEG C～700 DEG C of anaerobism, pyrolysis charring 4～
Obtain charcoal within 8 hours；By 25～40 parts ground of charcoal, 20～30 parts of dry pig manure, 8～15 parts of urea, calcium magnesium phosphate
10～20 parts, 5～10 parts of potassium chloride, mix, obtain charcoal base manure.
By compounding charcoal base manure and mine tailing matrix with 1:5 mass ratioes, mix, and stably place 15 days.Take cogongrass
Seed is placed in nursery 2 weeks in the culture dish containing nutrient solution；Then, the more uniform seedling of size 40 is selected, is transplanted to mixed culture
In matrix, carry out 75～90 days cultivating, period supplements deionized water daily.When planting to 60～75 days, apply 5mmol/L's
EDTA chelating agent solution is stirred to matrix.Cogongrass is gathered in after plantation is full, gather cogongrass rhizosphere and non-rhizosphere tail
Ore deposit, cogongrass plant deionized water is rinsed, and after drying naturally, dries grinding.
Determine heavy metal in soil content.
Measurement result shows, can strengthen cogongrass heavy metal using charcoal and chelating agent and pollute serpentine type mine tailing
Repairing effect, the content of Mn and Ni element reduce by 8.5% and 11.3% respectively, but the repairing effect to Cr, Cu and Zn is not up to
The level of signifiance.
As Figure 2-3, biomass of the cogongrass plant in serpentine tailing is 15.5 ± 1.6g (dry weight), is significantly higher than
Olivine-type and magnetic iron ore type mine tailing, high organic content cause serpentine tailing and the property of soil to be closer to.Cogongrass is planted
Strain heavy metal element shows concentration effect, and the enriching quantity to Ni, Mn and Cr can respectively reach 88.5mg kg-1,58.9mg
Kg-1 and 27.5mg kg-1, but the accumulation effect to Zn and Cu is not notable, be due to the content in mine tailing matrix relatively low.
Continue compounding charcoal base manure and mine tailing matrix with 1:5 mass ratioes, mix, and stably place 15 days.Take
Cogongrass seed is placed in nursery 2 weeks in the culture dish containing nutrient solution；Then, the more uniform seedling of size 40 is selected, is transplanted to mixing
In culture matrix, carry out 75～90 days cultivating, period supplements deionized water daily.When planting to 60～75 days, apply 5mmol/L
EDTA chelating agent solution to matrix, stir.Cogongrass is gathered in after plantation is full, gather cogongrass rhizosphere and non-rhizosphere
Mine tailing, cogongrass plant deionized water is rinsed, and after drying naturally, dries grinding；Until the cultivation of serpentine type femic mine tailing
In matrix, content of beary metal is not higher than predetermined value.
The present embodiment can promote to repair using the method for charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal
Multiple good growth of the plant in serpentine tailing matrix, by the complex activation of chelating agent heavy metal element, greatly improves
Absorption efficiency of the plant to heavy metal element in mine tailing, with environmental friendliness, non-secondary pollution, low cost and workable,
Impact of the heavy metallic mineral to environment is greatly reduced, protective effect is served to ecological environment.
Embodiment 2
Based on embodiment 1, the present embodiment is using olivine-type femic mine tailing as cultivation matrix, the charcoal base that will be compounded
Fertilizer is with mine tailing matrix with 1:6 mass ratioes, mix, and stably place 18 days.Take cogongrass seed and be placed in the culture dish containing nutrient solution
Middle nursery 2 weeks；Then, the more uniform seedling 35 of size is selected, in transplanting to mixed culture matrix, the initial stage waters 300ml, enters
Row is cultivated for 75～90 days.Period supplements deionized water daily.When planting to 60～75 days, apply the EDDS chelating agent of 10mmol/L
Solution, stirs.After plantation expires, collection cogongrass plant, cogongrass rhizosphere and non-rhizosphere mine tailing, cogongrass plant is spent respectively
Ionized water is rinsed, and after drying naturally, dries grinding.
Determine content of beary metal in mine tailing matrix soil.
Measurement result shows, can strengthen cogongrass heavy metal using charcoal and chelating agent and pollute olivine-type mine tailing
Repairing effect, the content of Mn and Ni element significantly reduce 7.8% and 9.8%, but the repairing effect to other heavy metals is not up to
The level of signifiance.
As Figure 2-3, plant after expiring, biomass of the cogongrass plant in olivine tailing mine is that 10.3 ± 1.2g is (dry
Weight), low compared with serpentine tailing.Cogongrass plant pair heavy metal element shows concentration effect, and the enriching quantity to Ni, Mn and Cr can divide
70.8mg kg-1,44.1mg kg-1 and 23.8mg kg-1 is not reached, but the accumulation effect to Zn and Cu is not notable, due to tail
Content in ore deposit matrix is relatively low caused.
Continue compounding charcoal base manure and mine tailing matrix with 1:6 mass ratioes, mix, and stably place 18 days.Take
Cogongrass seed is placed in nursery 2 weeks in the culture dish containing nutrient solution；Then, the more uniform seedling 35 of size is selected, transplants to mixed
Close in culture matrix, the initial stage waters 300ml, carry out 75～90 days cultivating.Period supplements deionized water daily.Plant to 60～75
It when, apply 10mmol/L EDDS chelating agent solution, stir.After plantation expires, cogongrass plant, cogongrass rhizome is gathered respectively
Border and non-rhizosphere mine tailing, cogongrass plant deionized water is rinsed, and after drying naturally, dries grinding；Until olivine sections magnesium
In matter mine tailing cultivation matrix, content of beary metal is not higher than predetermined value.
The present embodiment can promote to repair using the method for charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal
Multiple good growth of the plant in olivine tailing mine matrix, by the complex activation of chelating agent heavy metal element, greatly improves
Absorption efficiency of the plant to heavy metal element in mine tailing, with environmental friendliness, non-secondary pollution, low cost and workable,
Impact of the heavy metallic mineral to environment is greatly reduced, protective effect is served to ecological environment.
Embodiment 3
Based on embodiment 1, the present embodiment is using the magnesia mine tailing of magnetic iron ore sections as cultivation matrix, the charcoal base that will be compounded
Fertilizer is with mine tailing matrix with 1:8 mass ratioes, mix, and stably place 20 days.Take cogongrass seed and be placed in the culture dish containing nutrient solution
Middle nursery 2 weeks；Then, the more uniform seedling 40 of size is selected, in transplanting to mixed culture matrix, the initial stage waters 350ml, enters
Row is cultivated for 75～90 days, and period supplements deionized water daily.When planting to 60～75 days, apply the citric acid chelating of 15mmol/L
Agent solution is stirred to matrix.After plantation expires, cogongrass is gathered in, cogongrass rhizosphere and non-rhizosphere mine tailing is gathered, will
Cogongrass plant deionized water is rinsed, and after drying naturally, dries grinding.
Determine content of beary metal in mine tailing matrix soil.
Measurement result shows, can strengthen cogongrass heavy metal using charcoal and chelating agent and pollute magnetic iron ore type mine tailing
Repairing effect, the content of Cr, Mn and Ni element reduce by 7.6%, 8.1% and 12.8% respectively, but the repairing effect to Cu and Zn
The not up to level of signifiance.
As Figure 2-3, plant after expiring, biomass of the cogongrass plant in magnetic iron ore mine tailing is only 7.8 ± 1.2g/ basin
(dry weight), this be due to magnetite ore particles fine and close, caused by the root system of plant is difficult to absorb nutrient.Cogongrass plant pair heavy metal element
Concentration effect is shown, the enriching quantity to Ni, Mn and Cr can respectively reach 68.6mg kg-1,43.7mg kg-1 and 40.4mg
Kg-1, but the accumulation effect to Zn and Cu is not notable, be due to the content in mine tailing matrix relatively low.
Continue compounding charcoal base manure and mine tailing matrix with 1:8 mass ratioes, mix, and stably place 20 days.Take
Cogongrass seed is placed in nursery 2 weeks in the culture dish containing nutrient solution；Then, the more uniform seedling 40 of size is selected, transplants to mixed
Close in culture matrix, the initial stage waters 350ml, carry out 75～90 days cultivating, period supplements deionized water daily.Plant to 60～75
It when, apply 15mmol/L citric acid chelating agent solution to matrix, stir.After plantation expires, cogongrass is received
Cut, cogongrass rhizosphere and non-rhizosphere mine tailing is gathered, cogongrass plant deionized water is rinsed, after drying naturally, dry grinding；Until
In the magnesia mine tailing cultivation matrix of magnetic iron ore sections, content of beary metal is not higher than predetermined value.
The present embodiment can promote to repair using the method for charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal
Multiple good growth of the plant in magnetic iron ore mine tailing matrix, by the complex activation of chelating agent heavy metal element, greatly improves
Absorption efficiency of the plant to heavy metal element in mine tailing, with environmental friendliness, non-secondary pollution, low cost and workable,
Impact of the heavy metallic mineral to environment is greatly reduced, protective effect is served to ecological environment.
It should be pointed out that the present invention administer heavy metal pollution mine tailing during, the plantation of plant, plantation the cycle and
The applied amount of charcoal base manure, need to according to the change of Tailings Dam type appropriate adaptation, so as to reach preferable repairing and treating.
According to embodiment, the present invention is using charcoal and the side of chelating agent fortification of plants restoration of soil polluted by heavy metal
Method can promote good growth of the rehabilitation plant in mine tailing matrix, by the complex activation of chelating agent heavy metal element, greatly
Big improve absorption efficiency of the plant to heavy metal element in mine tailing, with environmental friendliness, non-secondary pollution, low cost and operable
Property strong, greatly reduce impact of the heavy metallic mineral to environment, protective effect served to ecological environment.
More than, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto, any it is familiar with sheet
Those skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in, should all cover
Within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should be defined by claim is defined.
Claims (7)
1. a kind of method of utilization charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal, it is characterised in that：The party
Method is comprised the following steps：
(1) charcoal base manure is mixed in heavy metal mine tailing matrix prepare cultivation matrix；
(2) planting plants in cultivation matrix；
(3) apply chelating agent after planting 60～75 days in cultivation matrix.
2. a kind of method of utilization charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal as claimed in claim 1,
It is characterized in that：Further comprising the steps of before step (1)：
(1) charcoal is prepared；
(2) charcoal and fertilizer are mixed with charcoal base manure.
3. a kind of method of utilization charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal as claimed in claim 1,
It is characterized in that：The concrete steps of step (3)：After cogongrass is planted 60～75 days, concentration is 5～20mmol/L's
EDTA, EDDS or lemon acid sequestering agent are applied in cultivation matrix.
4. a kind of method of utilization charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal as claimed in claim 2,
It is characterized in that：The charcoal preparation method is comprised the following steps：
(1) forest and agricultural biomass of collection is cleaned post-drying with water and salt solution to crush；
(2) the broken forest and agricultural biomass is put in retort and is filled with the anoxybiotic filling casing of protective gas, at 300 DEG C
Pyrolysis charring 4～8 hours under the conditions of～700 DEG C；
(3) carbonization product obtained after processing pyrolysis charring is cooled to room temperature.
5. a kind of method of utilization charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal as claimed in claim 2,
It is characterized in that：The preparation method of the charcoal base manure is comprised the following steps：
(1) 50～80 mesh sieves were crushed charcoal；
(2) according to 25～40 parts of charcoal, 20～30 parts of dry pig manure, 8～15 parts of urea, 10～20 parts of calcium magnesium phosphate, potassium chloride 5
～10 parts of mixing, prepare charcoal base manure.
6. a kind of method of utilization charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal as claimed in claim 1,
It is characterized in that：The heavy metal pollution mine tailing is iron magnesium type mine tailing；The heavy metal pollution mine tailing include serpentine tailing,
Olivine tailing mine and magnetic iron ore mine tailing；By the different iron magnesium type mine tailing matrix and charcoal base manure according to 5～8:1 mass
Than mixing as cultivation matrix.
7. a kind of method of utilization charcoal and chelating agent fortification of plants restoration of soil polluted by heavy metal as claimed in claim 1,
It is characterized in that：Also comprise the following steps after step (3)：
(1) plant after expiring, the content of beary metal in mine tailing matrix soil is measured；
(2) content of beary metal is no longer repaired if being not higher than predetermined value in the mine tailing matrix soil；If in mine tailing matrix soil
The content of heavy metal then returns the step (1) higher than predetermined value.
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| CN106881348A (en) * | 2017-03-22 | 2017-06-23 | 辽宁石油化工大学 | A kind of method that utilization Chinese silvergrass, charcoal and Pig raising wastewater improve oil-polluted soils utilization rate |
| CN107116096A (en) * | 2017-05-16 | 2017-09-01 | 湖北加德科技股份有限公司 | A kind of pyrolyzing sludge carbon and the united heavy metal soil remediation method of bioanalysis |
| CN108271452A (en) * | 2017-12-15 | 2018-07-13 | 安徽金阳光农业服务有限公司 | One kind being rich in heavy metal tailing phytoremediation |
| CN108326023A (en) * | 2018-02-28 | 2018-07-27 | 中山大学 | The method that wing pod Cassia tora and charcoal joint repair Tailings Dam |
| CN108393346A (en) * | 2018-05-14 | 2018-08-14 | 东华大学 | A kind of method that calper calcium peroxide-charcoal repairs agricultural soil |
| CN108672485A (en) * | 2018-05-14 | 2018-10-19 | 东华大学 | A kind of method of heavy metal and organic pollution in reparation agricultural soil |
| CN108892342A (en) * | 2018-07-17 | 2018-11-27 | 苏州科技大学 | A kind of preparation method of the fixed composite material of Sediments heavy metal |
| CN109174935A (en) * | 2018-09-20 | 2019-01-11 | 鞍钢集团矿业有限公司 | A method of tailing is planted using microbial bacterial agent and modifying agent and is afforested |
| CN110328223A (en) * | 2018-08-01 | 2019-10-15 | 中国科学院地球化学研究所 | A kind of polluted agricultural land restorative procedure for realizing high mercury pollution area secure agricultural production using charcoal |
| CN112404122A (en) * | 2020-10-28 | 2021-02-26 | 武汉市秀谷科技有限公司 | Planting and cultivating method for farmland heavy metal-enriched plants |
| US11124461B2 (en) | 2019-07-04 | 2021-09-21 | Incitec Pivot Limited | Fertilizer |
| CN114405989A (en) * | 2022-01-26 | 2022-04-29 | 湖南省棉花科学研究所 | Method for promoting cadmium absorption of cotton and application thereof |
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| CN106881348A (en) * | 2017-03-22 | 2017-06-23 | 辽宁石油化工大学 | A kind of method that utilization Chinese silvergrass, charcoal and Pig raising wastewater improve oil-polluted soils utilization rate |
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| CN108271452A (en) * | 2017-12-15 | 2018-07-13 | 安徽金阳光农业服务有限公司 | One kind being rich in heavy metal tailing phytoremediation |
| CN108326023A (en) * | 2018-02-28 | 2018-07-27 | 中山大学 | The method that wing pod Cassia tora and charcoal joint repair Tailings Dam |
| CN108393346A (en) * | 2018-05-14 | 2018-08-14 | 东华大学 | A kind of method that calper calcium peroxide-charcoal repairs agricultural soil |
| CN108672485A (en) * | 2018-05-14 | 2018-10-19 | 东华大学 | A kind of method of heavy metal and organic pollution in reparation agricultural soil |
| CN108892342A (en) * | 2018-07-17 | 2018-11-27 | 苏州科技大学 | A kind of preparation method of the fixed composite material of Sediments heavy metal |
| CN108892342B (en) * | 2018-07-17 | 2021-09-07 | 苏州科技大学 | Preparation method of composite material for fixing heavy metals in water body sediment |
| CN110328223A (en) * | 2018-08-01 | 2019-10-15 | 中国科学院地球化学研究所 | A kind of polluted agricultural land restorative procedure for realizing high mercury pollution area secure agricultural production using charcoal |
| CN109174935A (en) * | 2018-09-20 | 2019-01-11 | 鞍钢集团矿业有限公司 | A method of tailing is planted using microbial bacterial agent and modifying agent and is afforested |
| US11124461B2 (en) | 2019-07-04 | 2021-09-21 | Incitec Pivot Limited | Fertilizer |
| US11691929B2 (en) | 2019-07-04 | 2023-07-04 | Incitec Fertilizers Pty Limited | Fertiliser |
| CN112404122A (en) * | 2020-10-28 | 2021-02-26 | 武汉市秀谷科技有限公司 | Planting and cultivating method for farmland heavy metal-enriched plants |
| CN114405989A (en) * | 2022-01-26 | 2022-04-29 | 湖南省棉花科学研究所 | Method for promoting cadmium absorption of cotton and application thereof |
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Application publication date: 20170308 |