CN101961725A - Application of dockleaf knotweed to remediation of heavy metal pollution of mine soil and sludge - Google Patents
Application of dockleaf knotweed to remediation of heavy metal pollution of mine soil and sludge Download PDFInfo
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- CN101961725A CN101961725A CN2009103046523A CN200910304652A CN101961725A CN 101961725 A CN101961725 A CN 101961725A CN 2009103046523 A CN2009103046523 A CN 2009103046523A CN 200910304652 A CN200910304652 A CN 200910304652A CN 101961725 A CN101961725 A CN 101961725A
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Abstract
The invention discloses application of dockleaf knotweed to remediation of cadmium, copper, lead and zinc pollution of mine soil and sludge, which is characterized by planting dockleaf knotweed in the mine soil or sludge polluted by heavy metals. The invention has the following beneficial effects: the dockleaf knotweed is planted in the mine soil or sludge by utilizing the enrichment characteristics of dockleaf knotweed toward cadmium, copper, lead, zinc and other heavy metals, and can absorb the accumulated heavy metals such as cadmium, copper, lead, zinc, etc, and most dockleaf knotweed is transported above the ground to achieve the aim of remediating heavy metal pollution of mine soil and sludge; the dockleaf knotweed dispenses with special management in the growth process, thus the cost is lower and the operability is strong; and meanwhile, the invention develops new plant resource varieties for remediation of plants polluted by heavy metals in the mine oil and sludge and brings new progress and development space for deep development of plant remediation technology.
Description
Technical field
The present invention relates to the recovery technique field of heavy metal pollution in the environment, the application of especially a kind of plant pale persicaria in the cadmium of repairing mine soil and mud, copper, lead, zinc heavy metal pollution.
Background technology
Heavy metal in the environment (as cadmium Cd, copper Cu, plumbous Pb, zinc Zn etc.) pollutes and has characteristics such as disguise, chronicity and irreversibility, its pollutant poor mobility, holdup time in medium are grown, can not be degraded by microorganisms, also can influence human health the most at last, cause immeasurable influence through approach such as food chain transmission.
The method of repairing heavy metal pollution mainly comprises engineering reparation, physical chemistry reparation, biological restoration (phytoremediation and microorganism are repaired) and Agro-ecology reparation etc. at present.These methods all have characteristics separately, can reduce the pollution level of heavy metal to a certain extent.Yet, adopt engineering, physico-chemical process remediating heavy metal to have certain limitation, be difficult to extensive large stretch of soil and the mud of handling pollution usually, and can cause the fertility degeneration and the biologically active of soil and mud to descend; And there is long shortcoming of cycle in the Agro-ecology measure.Biological restoration particularly phytoremediation has small investment, efficient height, and does not cause multifrequency natures such as secondary pollution, has shown great potentiality in the heavy metal pollution of environment such as repairing mine soil and mud, becomes the research focus that receives much concern in recent years.
Develop at present the plant that is used for the repairing heavy metal in soil pollution and mainly comprised Thymifoious Euphorbia Herb, giantreed, corn, soybean etc.In addition, thus the inventor had found once in special project research for many years that the wild crowndaisy chrysanthemum of the wild crowndaisy chrysanthemum platymiscium of Papaveraceae slenderstalk dicranostigma herb platymiscium slenderstalk dicranostigma herb and composite family etc. had enriched character to heavy metals such as Cd, Cu, Pb, Zn and can be used for repair process (seeing Chinese patent ZL 200610022669.6 and Chinese patent application 200810045743.5) to heavy metal pollution of soil.
However, be applicable to that the plant variety of heavy metal pollution of soil biological restoration is still very limited; Especially along with fast development of modern industry, various heavy metal pollutions are also serious day by day.In the face of serious day by day heavy metal pollution problem, the plant variety resource that can be used for the heavy metal pollution of soil biological restoration at present is difficult to satisfy actual needs especially, suddenly treats further research and enlarges available resources.But well-knownly be, because the degree of enriching of plant resources will determine which plant whether have some corresponding characteristic on the earth, but is not a pipe course, even spend a large amount of human and material resources and financial resources, also may not just can filter out the plant variety that suits the requirements.
Summary of the invention
The inventor is in the research work of being engaged in the heavy metal pollution reparation for many years, after plants such as finding slenderstalk dicranostigma herb, wild crowndaisy chrysanthemum has enriched character to heavy metals such as Cd, Cu, Pb, Zn, find once more: sorrel polygonaceae pale persicaria platymiscium pale persicaria (Latin is called Malva sinensis Cavan) also all has significant enriched character to heavy metals such as the Cd in the environment such as mine soil and mud, Cu, Pb, Zn.Therefore, purpose of the present invention is exactly the problem that can be used for the plant variety inadequate resource of heavy metal pollution of soil biological restoration at above-mentioned, and the application in the cadmium of a kind of new plant variety pale persicaria at repairing mine soil and mud, copper, lead, the zinc heavy metal pollution is provided.
In order to realize the foregoing invention purpose, the technical solution used in the present invention is as follows:
The application of pale persicaria in the cadmium of repairing mine soil and mud, copper, lead, zinc heavy metal pollution planted pale persicaria in the mine soil of heavy metal pollution or mud and to be got final product.
The vitality of pale persicaria is very vigorous, is easy to survive, and can directly transplant or seed sowing be grown; Can survive under field conditions (factors), in its whole growth process, not need to carry out special management.
Can be by the aerial part of regular toothing harvesting plant, its root can continue survival, growth, or because of its seed diffusivity is strong with the wind, the natural propagation growth fast, do not need annual plantation, can effectively reduce Cd, the Cu in contaminated soil and the mud, the content of heavy metals such as Pb, Zn, thus repairing polluted soil and mud.
Pale persicaria among the present invention, for sorrel polygonaceae pale persicaria belongs to 2 years or herbaceos perennial (Latin is called Polygonum lapathifolium Linn), through experimental study, prove that it mainly has enriched character to heavy metals such as Cd, Cu, Pb, Zn.The present invention has made full use of pale persicaria just to above-mentioned Cd, Cu, Pb, the enriched character of heavy metals such as Zn, with its transplanting or with its seed sowing to the contaminated by heavy metals mine soil and mud, Cd in absorption and accumulation mine soil and the mud, Cu, Pb, heavy metals such as Zn, and its major part is transported to aerial part, reduce Cd in mine soil and the mud, Cu, Pb, the content of Zn etc., when treating that aerial part forms certain biomass, but the toothing harvesting is extracted continuously, reduces Cd in contaminated soil and the mud thereby reach, Cu, Pb, the purpose of Zn content.
Compared with prior art, the invention has the beneficial effects as follows:
The inventor finds that by experimental study for many years pale persicaria has significant enriched character to heavy metals such as cadmium, copper, lead, zinc.The present invention utilizes this enriched character of pale persicaria to heavy metals such as cadmium, copper, lead, zinc just, it is planted in mine soil or mud, but heavy metals such as absorption and accumulation cadmium, copper, lead, zinc, and its major part is transported to aerial part, to reach the purpose that repairing mine soil and sludge heavy-metal pollute.And, because the vitality of pale persicaria is very vigorous, be easy to survive, in its whole growth process, all do not need to carry out special management, thereby cost is lower, workable; Simultaneously also developed new plant resource variety, for the deep development of phytoremediation technology has brought new progress and development space for heavy metal-polluted plants reparation in mine soil and the mud.
The specific embodiment
The present invention is described in further detail below in conjunction with the specific embodiment.
But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment.
Embodiment 1
The application that present embodiment is a pale persicaria in the cadmium of repairing mine soil, copper, lead, zinc heavy metal pollution, its concrete practice is:
Adopt direct transplanting method, under the natural conditions, plantation sorrel polygonaceae pale persicaria platymiscium pale persicaria (Polygonum lapathifol ium Linn) in the soil of the plumbous zinc ore district's heavy metal pollution of the Yingjing dotey of Sichuan Province water hole;
Carry out the aerial part of toothing harvesting plant after 3 months, recording wherein, the weight percentage of Cd, Cu, Pb, Zn four heavy metal species is respectively: 116.9mg kg
-1, 256.9mg kg
-1, 640.8mg kg
-1, 2114.3mg kg
-1
Embodiment 2
Present embodiment is the application of pale persicaria in the cadmium of repairing mud, copper, lead, zinc heavy metal pollution, and its concrete practice is:
Adopt seed direct-seeding under the natural conditions, plantation sorrel polygonaceae pale persicaria platymiscium pale persicaria (Polygonum lapathifolium Linn) in the mud of the plumbous zinc ore district's heavy metal pollution of the rich spring in Hanyuan County, Sichuan Province;
Carry out the aerial part of toothing harvesting plant after 85 days, recording wherein, the weight percentage of Cd, Cu, Pb, Zn four heavy metal species is respectively: 108.6mg kg
-1, 204.8mg kg
-1, 685.3mg kg
-1, 2213.7mg kg
-1
By the foregoing description 1 and 2 as seen, utilization of the present invention is planted pale persicaria in the mine soil of heavy metal pollution or mud, can absorb Cd, Cu, heavy metals such as Pb, Zn in the contaminated soil significantly, thereby reach the purpose of effective repairing mine soil and sludge heavy-metal pollution.
Claims (3)
1. the application of pale persicaria in the cadmium of repairing mine soil and mud, copper, lead, zinc heavy metal pollution is characterized in that: pale persicaria is planted in the mine soil of heavy metal pollution or mud get final product.
2. application according to claim 1 is characterized in that: described pale persicaria is directly transplanted or the pale persicaria seed sowing is planted in the mine soil or mud of heavy metal pollution.
3. application according to claim 1 is characterized in that: the aerial part that the pale persicaria of plantation is carried out the periodical reaping plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103046523A CN101961725A (en) | 2009-07-22 | 2009-07-22 | Application of dockleaf knotweed to remediation of heavy metal pollution of mine soil and sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103046523A CN101961725A (en) | 2009-07-22 | 2009-07-22 | Application of dockleaf knotweed to remediation of heavy metal pollution of mine soil and sludge |
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| CN101961725A true CN101961725A (en) | 2011-02-02 |
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| CN2009103046523A Pending CN101961725A (en) | 2009-07-22 | 2009-07-22 | Application of dockleaf knotweed to remediation of heavy metal pollution of mine soil and sludge |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847707A (en) * | 2012-08-31 | 2013-01-02 | 四川农业大学 | Remediation method for heavy metal lead pollution in mine |
| CN103071669A (en) * | 2013-01-08 | 2013-05-01 | 华东师范大学 | Method for soil heavy metal pollution remediation through grass family with enrichment capacity |
| CN103433272A (en) * | 2013-07-30 | 2013-12-11 | 西南科技大学 | Method for restoring soil polluted by high-concentration uranium with garden sorrel |
| CN103586268A (en) * | 2013-11-05 | 2014-02-19 | 四川农业大学 | Application of lantana camara to remediation of heavy metal zinc, lead and copper polluted soil |
| CN110140608A (en) * | 2019-06-18 | 2019-08-20 | 广西壮族自治区农业科学院 | A kind of cultural method that roselle yields two crops a year |
| CN110523772A (en) * | 2019-08-29 | 2019-12-03 | 安徽禾美环保集团有限公司 | A kind of chromium-copper combined pollution plant restoration method |
| CN111499001A (en) * | 2020-04-28 | 2020-08-07 | 杰瑞环保科技有限公司 | Phytoremediation technology for polluted water body |
-
2009
- 2009-07-22 CN CN2009103046523A patent/CN101961725A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847707A (en) * | 2012-08-31 | 2013-01-02 | 四川农业大学 | Remediation method for heavy metal lead pollution in mine |
| CN102847707B (en) * | 2012-08-31 | 2014-08-06 | 四川农业大学 | Remediation method for heavy metal lead pollution in mine |
| CN103071669A (en) * | 2013-01-08 | 2013-05-01 | 华东师范大学 | Method for soil heavy metal pollution remediation through grass family with enrichment capacity |
| CN103071669B (en) * | 2013-01-08 | 2014-03-05 | 华东师范大学 | Method for soil heavy metal pollution remediation through grass family with enrichment capacity |
| CN103433272A (en) * | 2013-07-30 | 2013-12-11 | 西南科技大学 | Method for restoring soil polluted by high-concentration uranium with garden sorrel |
| CN103586268A (en) * | 2013-11-05 | 2014-02-19 | 四川农业大学 | Application of lantana camara to remediation of heavy metal zinc, lead and copper polluted soil |
| CN110140608A (en) * | 2019-06-18 | 2019-08-20 | 广西壮族自治区农业科学院 | A kind of cultural method that roselle yields two crops a year |
| CN110140608B (en) * | 2019-06-18 | 2021-03-26 | 广西壮族自治区农业科学院 | Method for cultivating roselle twice a year |
| CN110523772A (en) * | 2019-08-29 | 2019-12-03 | 安徽禾美环保集团有限公司 | A kind of chromium-copper combined pollution plant restoration method |
| CN111499001A (en) * | 2020-04-28 | 2020-08-07 | 杰瑞环保科技有限公司 | Phytoremediation technology for polluted water body |
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Open date: 20110202 |