CN102423768A - Method for repairing Pb pollution in soil - Google Patents
Method for repairing Pb pollution in soil Download PDFInfo
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- CN102423768A CN102423768A CN2011103761814A CN201110376181A CN102423768A CN 102423768 A CN102423768 A CN 102423768A CN 2011103761814 A CN2011103761814 A CN 2011103761814A CN 201110376181 A CN201110376181 A CN 201110376181A CN 102423768 A CN102423768 A CN 102423768A
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Abstract
The invention discloses a method for repairing Pb pollution in soil. The invention provides a phytoremediation which is economic and efficient and can also achieve a better treatment effect through processes of planting, propagation, harvesting, extraction and the like at a heavy metal Pb pollution region by using Pb hyper-accumulated plant pogonatherum crinitum. The method can be used for phytoremediation, soil ecological recovery and the like of heavy metal pollution at a mining area, and has the obvious economic and social benefit.
Description
Technical field
The present invention relates to a kind of heavy-metal contaminated soil in-situ remediation method, belong to the recovery technique field of heavy-metal contaminated soil.Specifically utilize heavy metal Pb the super enriching plant rough melic herb (
Pogonatherum crinitum) method of repairing the Pb contaminated soil.
Background technology
China's heavy metal Pb contaminated soil area is big, coverage is wide, toxic action is hidden; And can not be decomposed by edaphon; Accumulate, be converted into the stronger methyl compound of toxicity easily, even can in human body, accumulate and the serious threat human health through food chain.Heavy metal Pb pollution control at present mainly adopts soil moved in to improve the original method, leaching method, use physics and chemical method such as chemical improvement agent, and these methods are expensive not only, can only small area applications, and cause secondary pollution easily, can not tackle the problem at its root.
On the soil that contains pollutant Pb, plant rough melic herb; Absorb the Pb in the contaminated soil in a large number through the rough melic herb root system; And it is transferred to the overground part organ; When plant length is maximum to the upperground part biomass, the plant shoot organ is removed from contaminated soil, thus the purpose that pollutant in soil Pb is removed in realization.The present invention utilizes the super enriching plant rough melic herb to administer the Pb contaminated soil, have cost, workable, do not destroy soil physico-chemical property, do not cause secondary pollution and preventing that contaminated soil wind erosion, water erosion from all having good advantages such as effect.
Summary of the invention
The method that the object of the present invention is to provide Pb in a kind of rehabilitating soil to pollute, this is a kind of not only economical and efficient but also the phytoremediation technology that can reach the Pb contaminated soil of better regulation effect.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
At heavy metal Pb Polluted area plantation rough melic herb, annual March in October to next year old strain has been dug, be divided into several Xiao Cong, every clump has seedling 5-6 root, and 20cm * 15cm opens nest by seeding row spacing, and every nest is planted 1 clump, and blinding compresses.Plant the back and receive 1 time the 1st year winter, annual later on June and October respectively gather in the crops 1 time, extract aerial part, carry out the smelting of Pb and extract.Annual so repeatedly later on offshoot breeding 1 time.
Remarkable advantage of the present invention is: (1) reduces the rehabilitation cost of Pb contaminated soil; (2) heavy-metal contaminated soil is carried out the original position reparation, leave soil alone, can not cause secondary pollution; (3) to preventing that contaminated soil wind erosion, water erosion from all having good effect.
Protecting method of the present invention can be used for mining area heavy metal-polluted plants reparation, soil ecology recovery etc.
The specific embodiment
Embodiment 1:
Annual March in October to next year, old strain has been dug, be divided into several Xiao Cong, every clump has seedling 5-6 root, and 20cm * 15cm opens nest by distance between rows and hills, and every nest is planted 1 clump, and blinding compresses.Plant the back and receive 1 time the 1st year winter, annual later on June and October respectively gather in the crops 1 time, extract aerial part, carry out the smelting of Pb and extract.Annual so repeatedly later on offshoot breeding 1 time.
Embodiment 2:
Annual March in October to next year, old strain has been dug, root is divided into several Xiao Cong after cutting off aerial part (reservation 2-3cm), every clump of 5-6 root, 20cm * 15cm opens nest by distance between rows and hills, and every nest is planted 1 clump, and blinding compresses.Growth was gathered in aerial part after 5-7 month, burned then and reclaimed Pb.
Embodiment 3
The absolute content of rough melic herb aerial part Pb reaches 1231.8 mgkg
-1(greater than 1000 mgkg
-1), the absolute content of Pb reaches 934.11 mgkg in the root
-1, the Pb content of aerial part in the root, the transhipment coefficient is 1.32 (greater than 1), absorption coefficient is 0.313, and can restrain oneself the murder by poisoning of the P in soil b of higher concentration.It is thus clear that rough melic herb has stronger turn-over capacity to heavy metal Pb, can to greatest extent the Pb in the soil be taken away and transfer to aerial part, meet the essential characteristic of super enriching plant.
Annotate: the transhipment coefficient is meant the ratio of plant shoot concentration of element and its underground part respective element concentration, has reacted the ability that plant shifts to aerial part under ground portion heavy metal; Absorption coefficient (also claiming the biological concentration coefficient) is meant the ratio of respective element concentration in plant shoot concentration of element and the soil.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (3)
1. the method that Pb pollutes in the rehabilitating soil is characterized in that: at heavy metal Pb Polluted area plantation rough melic herb.
2. the method that Pb pollutes in the rehabilitating soil according to claim 1 is characterized in that: in annual March in October to next year, the old strain of described rough melic herb has been dug; Be divided into several Xiao Cong, every clump has seedling 5-6 root, and 20cm * 15cm opens nest by seeding row spacing; Every nest is planted 1 clump, and blinding compresses; Plant the back and receive 1 time the 1st year winter, annual later on June and October respectively gather in the crops 1 time, extract aerial part, carry out the smelting of Pb and extract; Annual so repeatedly offshoot breeding 1 time.
3. the method that Pb pollutes in the rehabilitating soil according to claim 2 is characterized in that: described rough melic herb growth was gathered in aerial part after 5-7 month, burned then and reclaimed Pb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103761814A CN102423768A (en) | 2011-11-24 | 2011-11-24 | Method for repairing Pb pollution in soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103761814A CN102423768A (en) | 2011-11-24 | 2011-11-24 | Method for repairing Pb pollution in soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102423768A true CN102423768A (en) | 2012-04-25 |
Family
ID=45957840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103761814A Pending CN102423768A (en) | 2011-11-24 | 2011-11-24 | Method for repairing Pb pollution in soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102423768A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433273A (en) * | 2013-08-12 | 2013-12-11 | 四川农业大学 | Application of willow herb to remediation of heavy metal lead pollution in soil |
| CN109047303A (en) * | 2018-07-03 | 2018-12-21 | 四川农业大学 | A method of induction pleioblastus argenteastriatus absorbs and accumulation P in soil b |
Citations (7)
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| CN1887457A (en) * | 2006-07-14 | 2007-01-03 | 云南省环境科学研究院 | Application and method of utilizing enriching plant in repairing lead polluted soil |
| CN1919484A (en) * | 2006-09-07 | 2007-02-28 | 昆明理工大学 | Plant restoration method for lead pollution of soil |
| CN101372016A (en) * | 2008-10-16 | 2009-02-25 | 昆明理工大学 | Plant repair method for treating soil having combined pollution of arsenic, lead and cadmium |
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| EP2251106A1 (en) * | 2009-05-12 | 2010-11-17 | Institut de Recherche pour le Développement ( IRD) | Use of cistus libanotis to clean heavy metals containing soil |
| KR20100131266A (en) * | 2009-06-05 | 2010-12-15 | 강원대학교산학협력단 | Method for stabilization of heavy metals in soils using heat-treated livestock and fisheries wastes |
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2011
- 2011-11-24 CN CN2011103761814A patent/CN102423768A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887457A (en) * | 2006-07-14 | 2007-01-03 | 云南省环境科学研究院 | Application and method of utilizing enriching plant in repairing lead polluted soil |
| CN1919484A (en) * | 2006-09-07 | 2007-02-28 | 昆明理工大学 | Plant restoration method for lead pollution of soil |
| CN101372016A (en) * | 2008-10-16 | 2009-02-25 | 昆明理工大学 | Plant repair method for treating soil having combined pollution of arsenic, lead and cadmium |
| CN101745520A (en) * | 2008-12-05 | 2010-06-23 | 中国科学院沈阳应用生态研究所 | Pb-pollution soil safe production method by utilizing low Pb-accumulation Chinese cabbage qiu'ao |
| EP2251106A1 (en) * | 2009-05-12 | 2010-11-17 | Institut de Recherche pour le Développement ( IRD) | Use of cistus libanotis to clean heavy metals containing soil |
| KR20100131266A (en) * | 2009-06-05 | 2010-12-15 | 강원대학교산학협력단 | Method for stabilization of heavy metals in soils using heat-treated livestock and fisheries wastes |
| CN101850359A (en) * | 2010-06-18 | 2010-10-06 | 中山大学 | Method for remediating lead-contaminated soil or water |
Non-Patent Citations (2)
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|---|
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| 李艺等: "广西凤凰锰矿区废弃地生态环境问题及恢复治理对策", 《地球与环境》, vol. 35, no. 3, 31 December 2007 (2007-12-31), pages 267 - 272 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433273A (en) * | 2013-08-12 | 2013-12-11 | 四川农业大学 | Application of willow herb to remediation of heavy metal lead pollution in soil |
| CN103433273B (en) * | 2013-08-12 | 2014-11-05 | 四川农业大学 | Application of willow herb to remediation of heavy metal lead pollution in soil |
| CN109047303A (en) * | 2018-07-03 | 2018-12-21 | 四川农业大学 | A method of induction pleioblastus argenteastriatus absorbs and accumulation P in soil b |
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Application publication date: 20120425 |