CN106111683A - A kind of repairing mine and the method for farming land heavy metal pollution of soil - Google Patents
A kind of repairing mine and the method for farming land heavy metal pollution of soil Download PDFInfo
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- CN106111683A CN106111683A CN201610603809.2A CN201610603809A CN106111683A CN 106111683 A CN106111683 A CN 106111683A CN 201610603809 A CN201610603809 A CN 201610603809A CN 106111683 A CN106111683 A CN 106111683A
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- heavy metal
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- herba hyperici
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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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- Biomedical Technology (AREA)
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- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
Disclosure of the invention a kind of repairing mine and the method for farming land heavy metal pollution of soil, belong to environmental protection and soil remediation field, its method is to plant Herba hyperici attenuati in described mine and farming land soil, the present invention uses the mode planting Herba hyperici attenuati in mine and farming land soil, heavy metal carries out absorbing enrichment, concentration coefficient to cadmium (Cd) is more than 3.5, concentration coefficient to lead (Pb) is more than 2.9, concentration coefficient to hydrargyrum (Hg) is more than 1.9, concentration coefficient to nickel (Ni) and zinc (Zn) is more than 1.3, there is significant Metal uptake concentration effect, low cost, operate, easy to spread, there is significant environmental protection and social benefit.
Description
Technical field
The present invention relates to soil remediation field, particularly relate to a kind of repairing mine and the side of farming land heavy metal pollution of soil
Method.
Background technology
Heavy metal pollution, generally refers to mercury in soils (Hg), cadmium (Cd), lead (Pb), nickel (Ni), zinc (Zn) etc. and exceeds standard.Study carefully
Its reason, mainly includes the discharge etc. of continuous exploitation, the waste water and dregs discharge of nonferrous metallurgy industry, the three industrial wastes etc. in mine
Deng.
Heavy metal is widely distributed in air, water body, soil, organism, and bed mud be often heavy metal storage vault and
Final Destination.When environmental change, generation is converted and discharges and pollutes by the Heavy Metals in bed mud.Heavy metal can not
It is biodegradable, but there is bioaccumulation, enter human body by soil, plant, crops, health is caused greatly danger
Danger.
Western Sichuan is the areal concentration of national famous Pb-Zn deposits, copper mine, iron mine and Rare Earth Mine, these
The mine tailing and the waste water Chang Yin heavy metal that contains high level that produce during mine development and pollute mining soil and neighbouring
Farming land, thus the ecological environment of this area and the healthy of people are caused serious threat.
In order to improve heavy metal pollution, existing method generally comprises two classes, and a class is to use modifying agent, such as heavy metal
Inhibitor, but this method can only play provisional inhibitory action, and overlong time also can cause accumulation；Another is existing
More effective, i.e. utilize plant to carry out absorbing heavy metal, after then being burned by plant harvesting, extract heavy metal, this method
It it is the most thorough and effective method.The existing plant for heavy metal soil remediation includes kind of a common violet, Herba pteridis vittatae, Pu Gong
English, Herba Solani Nigri, little Chinese liquor flower, Sedum alfredii Hance etc..These existing plants for heavy metal soil remediation, on the one hand may deposit
, poor growth not good enough at assimilation effect, growing environment being required the shortcomings such as high, on the other hand, the floristics of existing report has
Limit, along with the expansion of heavy metal pollution scope and increasing the weight of of degree, the more effective plant product that necessary further exploitation is new
Kind.
Summary of the invention
The goal of the invention of the present invention is: provide a kind of repairing mine and the method for farming land heavy metal pollution of soil, with
Solve the problems referred to above.
The technical solution used in the present invention is such that a kind of repairing mine and the side of farming land heavy metal pollution of soil
Method, plants Herba hyperici attenuati in described mine and farming land soil.
Herba hyperici attenuati (Hypericum attenuatum Choisy), for the herbaceos perennial of Hypericaceae, is also one
Plant the plant that vitality is more indomitable, be especially suitable for being grown on mining soil.
Present inventor is by experimental results demonstrate, Herba hyperici attenuati has the absorption concentration effect of excellence for heavy metal,
It is to absorb concentration effect more preferably in particular for cadmium (Cd) and lead (Pb).
As preferred technical scheme: the Seedling Stage at described Herba hyperici attenuati sows plant ash.Seedling Stage at Herba hyperici attenuati is broadcast
Spread plant ash, particularly preferred rice straw ash, can promote that Herba hyperici attenuati is for the sound absorption enrichment of heavy metal.
As preferred technical scheme: the fructescence at described Herba hyperici attenuati gathers in its aerial parts.Test proves that,
The overripe stage of Herba hyperici attenuati, its aerial parts absorbs the heavy metal of enrichment and peaks, at this time gather in its aerial parts, is dried and burns
Landfill separation therein, best results is carried out after burning.It addition, its under ground portion for heavy metal absorption be enriched with very
Little, so considering from the efficiency absorbing concentration effect and harvesting, the most only gather in its aerial parts.
It addition, present inventor is by experimental results demonstrate, use the mode of Herba hyperici attenuati and Herba Hyperici Japonici miscegenation, permissible
Improve the Herba hyperici attenuati absorption for heavy metal especially hydrargyrum (Hg).Wherein, Herba Hyperici Japonici (Hypericum japonicum
Thunb.) being Guttiferae annual herb plant, the mode of miscegenation uses the mode of cross sowing in line, preferably Herba hyperici attenuati and Herba Hyperici Japonici
Sown area than for 7:3.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows: the present invention use in mine and
The mode of farming land soil plantation Herba hyperici attenuati, heavy metal carries out absorbing enrichment, be more than 3.5 to the concentration coefficient of cadmium (Cd),
Concentration coefficient to lead (Pb) is more than 2.9, to the concentration coefficient of hydrargyrum (Hg) be more than 1.9, to nickel (Ni) and the richness of zinc (Zn)
Collection coefficient is more than 1.3, has significant Metal uptake concentration effect, low cost, operates, it is easy to promote, and has notable
Environmental protection and social benefit.
Detailed description of the invention
The present invention is described in detail below.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, to the present invention
It is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to
Limit the present invention.
Embodiment 1:
Mining area, city of Leshan sichuan and around plant Herba hyperici attenuati on farming land vacant lot within 10 kilometers, plantation density is for often to put down
Rice plantation 10 strains, gather in its aerial parts, crushed after being dried after Herba hyperici attenuati aerial parts is withered, extract and separate a huge sum of money therein
Belong to, then carry out the assay of heavy metal.
The present invention uses concentration coefficient (bioaccumulation coefficient) to evaluate and test its suction for heavy metal
Receiving accumulation ability, concentration coefficient refers to constituent content and the ratio of respective element content in soil at a certain position of plant, is to weigh
The important indicator of plant Heavy Metal Accumulation capacity of water, concentration coefficient is the biggest, and its accumulation ability is the strongest.The concentration coefficient of the present invention
It it is the weight/mass percentage composition of the weight/mass percentage composition heavy metal corresponding to soil of heavy metal in the Herba hyperici attenuati aerial parts of harvesting
Ratio,
Through measuring, the present embodiment is 3.56 to the concentration coefficient of cadmium (Cd), be 2.91 to the concentration coefficient of lead (Pb), to hydrargyrum
(Hg) concentration coefficient is 1.93, concentration coefficient to nickel (Ni) and zinc (Zn) is respectively 1.33 and 1.31；Its top dryly
Point content of beary metal: cadmium (Cd) is 361.03mg/kg, lead (Pb) is 169.37 mg/kg, hydrargyrum (Hg) be 90.05 mg/kg,
Nickel (Ni) and zinc (Zn) are respectively 63.73 mg/kg and 501.91 mg/kg.
Embodiment 2:
Mining area, city of Leshan sichuan and around plant Herba hyperici attenuati on farming land vacant lot within 10 kilometers, plantation density is for often to put down
Rice plantation 10 strains, and sow rice straw ash at the Seedling Stage of Herba hyperici attenuati, the amount of sowing is 0.5kg/m2, at Herba hyperici attenuati aerial parts
Gather in its aerial parts, crushed after being dried after Ku Wei, extract and separate heavy metal therein, then carry out measuring containing of heavy metal
Fixed；
The method using embodiment 1 is measured, the present embodiment to the concentration coefficient of cadmium (Cd) be 3.99, enrichment to lead (Pb)
Coefficient is 3.53, to the concentration coefficient of hydrargyrum (Hg) be 2.65, concentration coefficient to nickel (Ni) and zinc (Zn) be respectively 1.79 Hes
1.89；The content of beary metal of its dry aerial parts: cadmium (Cd) is 393.55mg/kg, lead (Pb) is 176.57 mg/kg, hydrargyrum
(Hg) be 99.34 mg/kg, nickel (Ni) and zinc (Zn) be respectively 69.35 mg/kg and 573.07 mg/kg.Prove to add vegetation
After ash, its Metal uptake ability dramatically increases.
Embodiment 3:
Mining area, city of Leshan sichuan and around plant Herba hyperici attenuati on farming land vacant lot within 10 kilometers, plantation density is for often to put down
Rice plantation 10 strains, and sow rice straw ash at the Seedling Stage of Herba hyperici attenuati, the amount of sowing is 0.5kg/m2, gather in its ground at fructescence
Upper part, crushed after being dried, extract and separate heavy metal therein, then carry out the assay of heavy metal.
The method using embodiment 1 is measured, and the present embodiment is 4.13 to the concentration coefficient of cadmium (Cd), to lead (Pb)
Concentration coefficient is 3.61, is more than 2.69 to the concentration coefficient of hydrargyrum (Hg), concentration coefficient to nickel (Ni) and zinc (Zn) is respectively
1.81 and 1.89；The content of beary metal of its dry aerial parts: cadmium (Cd) is 397.51mg/kg, lead (Pb) is 179.63 mg/
Kg, hydrargyrum (Hg) is 99.93 mg/kg, nickel (Ni) and zinc (Zn) are respectively 70.61 mg/kg and 581.09 mg/kg.Prove in mistake
The ripe phase gather in, its aerial parts content of beary metal than its withered time higher, it is advantageous to overripe stage harvesting.
Embodiment 4:
Mining area, city of Leshan sichuan and around plant Herba hyperici attenuati and Herba Hyperici Japonici on farming land vacant lot within 10 kilometers, use and hand over
The mode of fork sowing, the sown area of Herba hyperici attenuati and Herba Hyperici Japonici ratio is for 7:3, and plantation density is that every square meter plants 10 strains, and is catching up with
The Seedling Stage of mountain whip sows rice straw ash, and the amount of sowing is 0.5kg/m2, gather in its aerial parts, dried powder at fructescence
Broken, extract and separate heavy metal therein, then carry out the assay of heavy metal.
The method using embodiment 1 is measured, and the present embodiment is 4.31 to the concentration coefficient of cadmium (Cd), to lead (Pb)
Concentration coefficient is 3.85, is more than 3.95 to the concentration coefficient of hydrargyrum (Hg), concentration coefficient to nickel (Ni) and zinc (Zn) is respectively
1.85 and 1.91；The content of beary metal of its dry aerial parts: cadmium (Cd) is 419.37mg/kg, lead (Pb) is 191.61 mg/
Kg, hydrargyrum (Hg) is 151.39 mg/kg, nickel (Ni) and zinc (Zn) are respectively 75.21 mg/kg and 592.16 mg/kg.Prove with
After Herba Hyperici Japonici miscegenation, Herba hyperici attenuati is greatly enhanced for the absorption accumulation ability of heavy metal especially hydrargyrum (Hg).
Claims (3)
1. a repairing mine and the method for farming land heavy metal pollution of soil, it is characterised in that: at described mine and farming land
Soil plantation Herba hyperici attenuati:.
Method the most according to claim 1, it is characterised in that: the Seedling Stage at described Herba hyperici attenuati sows plant ash.
Method the most according to claim 1, it is characterised in that: the fructescence at described Herba hyperici attenuati gathers in its aerial parts.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610603809.2A CN106111683A (en) | 2016-07-28 | 2016-07-28 | A kind of repairing mine and the method for farming land heavy metal pollution of soil |
| CN201610651617.9A CN106180163A (en) | 2016-07-28 | 2016-07-28 | A kind of repairing mine and the method for farming land heavy metal pollution of soil |
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| CN201610603809.2A CN106111683A (en) | 2016-07-28 | 2016-07-28 | A kind of repairing mine and the method for farming land heavy metal pollution of soil |
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| CN201610651617.9A Pending CN106180163A (en) | 2016-07-28 | 2016-07-28 | A kind of repairing mine and the method for farming land heavy metal pollution of soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365497A (en) * | 2018-12-17 | 2019-02-22 | 桂林理工大学 | A method of stablizing cadmium pollution mine soil using Mine ecology type Lindley Butterflybush Herb |
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| CN1559711A (en) * | 2004-03-05 | 2005-01-05 | 中山大学 | Plant repairing method of agricultural land polluted by heavy metal |
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| CN103299740A (en) * | 2013-05-14 | 2013-09-18 | 深圳市如茵生态环境建设有限公司 | Treatment method for recovering mine wasteland vegetation |
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| CN102009063A (en) * | 2009-09-08 | 2011-04-13 | 卢立晃 | Plant restoration method for agricultural land contaminated by leather industrial chromium heavy metal |
| CN103272835A (en) * | 2013-05-30 | 2013-09-04 | 中国矿业大学 | Method for repairing mild contamination farmland soil by utilizing earthnut-type and tuber-type plants |
| CN105057328A (en) * | 2015-08-06 | 2015-11-18 | 惠州市东江园林工程有限公司 | Heavy-metal soil remediation method for mine |
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2016
- 2016-07-28 CN CN201610603809.2A patent/CN106111683A/en active Pending
- 2016-07-28 CN CN201610651617.9A patent/CN106180163A/en active Pending
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| CN1559711A (en) * | 2004-03-05 | 2005-01-05 | 中山大学 | Plant repairing method of agricultural land polluted by heavy metal |
| CN102380504A (en) * | 2010-09-03 | 2012-03-21 | 中国科学院沈阳应用生态研究所 | Method utilizing liana honeysuckles to remedy cadmium contaminated soil |
| CN103299740A (en) * | 2013-05-14 | 2013-09-18 | 深圳市如茵生态环境建设有限公司 | Treatment method for recovering mine wasteland vegetation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109365497A (en) * | 2018-12-17 | 2019-02-22 | 桂林理工大学 | A method of stablizing cadmium pollution mine soil using Mine ecology type Lindley Butterflybush Herb |
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| CN106180163A (en) | 2016-12-07 |
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