CN1555933A - Plant restoring method of lead polluted soil - Google Patents
Plant restoring method of lead polluted soil Download PDFInfo
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- CN1555933A CN1555933A CNA2004100156514A CN200410015651A CN1555933A CN 1555933 A CN1555933 A CN 1555933A CN A2004100156514 A CNA2004100156514 A CN A2004100156514A CN 200410015651 A CN200410015651 A CN 200410015651A CN 1555933 A CN1555933 A CN 1555933A
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- Prior art keywords
- lead
- soil
- sedum alfredii
- alfredii hance
- overground part
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- 239000002689 soil Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 16
- 241000196324 Embryophyta Species 0.000 claims abstract description 11
- 241000124844 Sedum alfredii Species 0.000 claims description 42
- 230000012010 growth Effects 0.000 claims description 13
- 238000003306 harvesting Methods 0.000 claims description 10
- 239000003337 fertilizer Substances 0.000 claims description 8
- 238000009313 farming Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 241000220286 Sedum Species 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 238000005067 remediation Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010019233 Headaches Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
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- 238000009825 accumulation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009418 agronomic effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
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- 231100000869 headache Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000000777 hematopoietic system Anatomy 0.000 description 1
- GJRGEVKCJPPZIT-UHFFFAOYSA-N isomugineic acid Natural products OC(=O)C(O)CCNC(C(O)=O)C(O)CN1CCC1C(O)=O GJRGEVKCJPPZIT-UHFFFAOYSA-N 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- GJRGEVKCJPPZIT-JBDRJPRFSA-N mugineic acid Chemical compound OC(=O)[C@@H](O)CCN[C@H](C(O)=O)[C@@H](O)CN1CC[C@H]1C(O)=O GJRGEVKCJPPZIT-JBDRJPRFSA-N 0.000 description 1
- 230000003680 myocardial damage Effects 0.000 description 1
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- 239000000049 pigment Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
A vegetative repairing method for the soil polluted by lead features that the plant 'Dongnan sedum' is growing in said soil for absorbing a great deal of lead from the soil and then removed. Its advantages are high effect and low cost.
Description
Technical field
The present invention relates to a kind of plant restoration method of lead-contaminated soil.
Background technology
Plumbous one of the heavy metal contaminants the most general in the environment that become.Human many activities, for example: mining, smelting, burning, use doped fuel, pigment and chemical fertilizer and pesticide or the like all are the main sources of lead contamination.China produces and uses plumbous relevant enterprise, and lead dust and lead fume exceed standard 13-1417 doubly in the air, and leaded grit can directly drop to ground in the atmosphere, or be accumulated in ground with lead containing sludge, or because of leaded sewage, mud is made fertilizer and is used, and all can make soil suffer plumbous pollution.Some suburb, industrial city agricultural land soil lead contents are higher than more than 100 times of background value, and the rice lead content of production is higher than tens of times in uncontamination district.The lead of human body excess intake can cause central lesion, tired out, headache, spasm, phrenoblabia etc. occur.Excessive lead can damage medulla hematopoietic system, causes anaemia, causes artery sclerosis, myocardial damage when acting on cardiovascular system simultaneously.Particularly soil is to plant by the environment of lead contamination, and animal and human beings'health have been brought sizable threat.
At present, comparatively ripe and physical chemistry technology that be used for the heavy metal pollution of soil reparation has: soil moved in to improve the original technology, drip washing technology, heat treatment technics, electrolysis tech, curing technology, vitrifying technology.These physical chemistry recovery techniques respectively have its advantage, but all exist quantities big, the expense costliness, be difficult to launch the improvement of massive pollution soil, cause secondary pollution easily simultaneously and cause soil texture to destroy, ecological problems such as soil activation decline and soil fertility degeneration.Phytoremediation technology is a kind of new method of using plant to remove soil pollutant.Advantages such as compare with conventional repair techniques, it is cheap that phytoremediation technology has expense, do not destroy environment, easily accepted by people more and more cause the attention of soil-plant-environment circle.
Summary of the invention
The object of the invention provides a kind of small investment, non-secondary pollution, the plant in-situ remediation method of improvement lead-contaminated soil.
For achieving the above object, the present invention is by directly planting Sedum alfredii Hance on by lead-contaminated soil, absorb the plumbous overground part that also upwards transports and be transported in a large number by the Sedum alfredii Hance root system, the harvesting overground part is also transferred to other local concentrating with it and is carried out harmless treatment, then can take away a large amount of lead in the soil environment, thereby reach the purpose of from contaminated soil, removing land pollutant fast.
The plant in-situ remediation method of lead-contaminated soil provided by the invention, step is as follows:
With traditional agro-farming method Sedum alfredii Hance is planted in the lead-contaminated soil, use azophoska and fertilizer, promote the growth of Sedum alfredii Hance root system; Gather in overground part first growth 3-4 month or after growing into the 30-40cm height, later every growth was gathered in once in 3 months, and overground part stays stem 2-3cm height during harvesting, and the overground part of harvesting was transferred to other local concentrating carry out harmless treatment.
Sedum alfredii Hance (Sedum alfredii Hance) is a herbaceos perennial, stem, mesophyll matter shape; Root-like stock is horizontal to be walked, the leaf alternate, and bottom Ye Chang comes off.Test shows that Sedum alfredii Hance is different with general plant, and it is a kind of plumbous rich plant that amasss, the lead of high-load in the soil is had very strong restrain oneself, absorption and accumulation ability.Under the water planting condition, Sedum alfredii Hance can be under the 320mgPb/L level normal growth, lead content average out to 518mg/kg can reach 1182mg/kg.Under the field condition, the overground part dry weight can reach 3219kg/ha, and lead content is 177mg/kg.Under the lower situation of soil lead content, also can a large amount of lead of enrichment in the Sedum alfredii Hance body, so it can repair the soil of serious pollution and slight pollution.Absorb lead in a large number by the plantation Sedum alfredii Hance, thereby realize the quick improvement of lead-contaminated soil.
Sedum alfredii Hance can be grown in the soil environment of pH value 5-8, and wide adaptability can be used for restoration of soil polluted by heavy metal in the most of area of China.In implementation process, can also be in conjunction with agronomic measures, as using fertilizer, the physicochemical property of improving the soil promotes moving Sedum alfredii Hance root growth, improves biomass, quickens Sedum alfredii Hance to the absorption of lead with to the transhipment of overground part, improves remediation efficiency.
Sedum alfredii Hance is a herbaceos perennial, it is slower to transplant the back growth fraction in 1 year, gather in first after growth 3-4 month, later every growth harvesting in 3 months once or Sedum alfredii Hance grow into 30-40cm and highly gather in once, overground part stays stem 2-3cm height during harvesting.Therefore when utilizing the Sedum alfredii Hance remediating lead-contaminated soil, notice that the time and the each stem that gather in stay height, in order to avoid the effect that influence is repaired and administered.
The speed of Sedum alfredii Hance vegetative propagation (based on the strain bud) is very fast, can form good ground and cover in short growth period, and its cover degree almost can reach 100%.On the other hand, Sedum alfredii Hance also has the characteristics that are suitable for cradling, and when other environmental condition is comparatively suitable, can cradle 3～4 batches of this plant shoots of results in 1 year.The Sedum alfredii Hance overground part is fit to scale, mechanized operation up to 40 centimetres simultaneously.
The Sedum alfredii Hance of harvesting should be transferred to other place and focus on or carry out resource processing and handle.And can reclaim wherein lead, and avoid producing secondary pollution, can directly produce economic benefit simultaneously.
The present invention is by plantation Sedum alfredii Hance remediating lead-contaminated soil, utilizes Sedum alfredii Hance to the absorption of lead with to the transhipment of overground part, by harvesting the upperground part biomass, reaches the purpose of taking away land pollutant from soil environment.This method is compared with traditional contaminated soil improvement method, small investment, and quantities is little, and administrative skill is less demanding, does not destroy soil physico-chemical property, non-secondary pollution, and can conserve water and soil, beautify the environment.Be a kind of applied range, small investment, maintenance cost low, simple to operate " green recovery technique ".The invention solves the reparation and the governing problem of lead-contaminated soil, have good social benefit, economic benefit and environmental benefit, in the lead-contaminated soil reparation, have broad application prospects.
Description of drawings
Fig. 1 is the variation of the soil available lead of 3 pairs of three kinds of different pH values of the embodiment of the invention, and oral thermometer shows the content of Available Lead in the preceding soil of plantation among the figure,
Available Lead content in the soil of expression plantation back.
The specific embodiment
Embodiment 1
Transplant Sedum alfredii Hance in the soil of different lead contamination levels, use azophoska, growing period manages by traditional crop management method, transplants back 4 months results aerial parts.After measured, under the 200mg/kg level of pollution, the dry output of Sedum alfredii Hance is 926kg/ha, and the overground part lead content is 2l0mg/kg, and the lead of taking away from soil is 194g/ha; Under the 400mg/kg level of pollution, the dry output of Sedum alfredii Hance is 1148kg/ha, and the overground part lead content is 180mg/kg, and the lead of taking away from soil is 207g/ha; Under the 800mg/kg level of pollution, the dry output of Sedum alfredii Hance is 981kg/ha, and the overground part lead content is 186mg/kg, and the lead of taking away from soil is 182g/ha; Under the 1600mg/kg level of pollution, the dry output of Sedum alfredii Hance is 878kg/ha, and the overground part lead content is 230mg/kg, and the lead of taking away from soil is 202g/ha.As can be seen, Sedum alfredii Hance removing ability to soil lead under different levels of pollution does not have significant difference, can be applied to the reparation of lead-contaminated soil in various degree.
Embodiment 2
In the lead-contaminated soil of leaded 1469mg/kg, transplant Sedum alfredii Hance, transplant for the first time back 4 months results aerial parts, fill the gaps with seedlings after the results, carry out after-crop after 3 months, use azophoska and fertilizer after each results, growing period manages by traditional crop management method.After measured, for the first time after the results, the dry output of Sedum alfredii Hance is 1277kg/ha, and the overground part lead content is 177mg/kg, and the lead of taking away from soil is for O.23kg/ha.After the after-crop, the output of Sedum alfredii Hance is 3219kg/ha, and the overground part lead content is 139mg/kg, takes away plumbous for O.48kg/ha from soil.The soil lead content is changed to 1403mg/kg by 1469mg/kg after twice results, be equivalent to the total plumbous minimizing 4.49% in the soil, later every growth 3 months harvesting once or Sedum alfredii Hance grow into 30-40cm and highly gather in once, lead content in the soil constantly reduces, thereby reach the purpose of from soil environment, removing land pollutant, finally realize the reparation of lead-contaminated soil.Test shows and uses azophoska and fertilizer, can obviously promote the growth of Sedum alfredii Hance, has improved biomass, has promoted root system to the absorption of lead with to the transhipment of overground part, improves remediation efficiency.
Embodiment 3
At leaded 6011mg/kg, transplant Sedum alfredii Hance in the lead-contaminated soil of different pH values, use azophoska, growing period manages by traditional crop management method, transplants back 4 months results aerial parts.After measured, under the 5.O level, the dry output of Sedum alfredii Hance is 1680kg/ha, and the overground part lead content is 162mg/kg, and the lead of taking away from soil is 272g/ha; Under pH value 5.5 levels, the dry output of Sedum alfredii Hance is 1530kg/ha, and the overground part lead content is 146mg/kg, and the lead of taking away from soil is 223g/ha; Under pH value 6.3 levels, the dry output of Sedum alfredii Hance is 1635kg/ha, and the overground part lead content is 121mg/kg, and the lead of taking away from soil is 198g/ha.Behind the plantation Sedum alfredii Hance, the available state of the soil of three kinds of different pH values (DTPA extracts attitude) lead content becomes 655mg/kg, 649mg/kg, 509mg/kg (see figure 1) by 564mg/kg, 555mg/kg, 616mg/kg respectively.As can be seen, under acid condition, the soil available lead content raises behind the plantation Sedum alfredii Hance, and along with the rising of soil pH, Available Lead content reduces.To the removing ability difference of soil lead, the removing ability is higher under the acid condition, under alkali condition under different pH levels for Sedum alfredii Hance, can pass through the mugineic acid material, regulate as acid fertilizer, increase plumbous validity, improve remediation efficiency by reducing soil pH.
Claims (1)
1, the plant restoration method of lead-contaminated soil is characterized in that: with traditional agro-farming method Sedum alfredii Hance is planted in the lead-contaminated soil, use azophoska and fertilizer, promote the growth of Sedum alfredii Hance root system; Gather in overground part first growth 3-4 month or after growing into the 30-40cm height, later every growth was gathered in once in 3 months, and overground part stays stem 2-3cm height during harvesting, and the overground part of harvesting was transferred to other local concentrating carry out harmless treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410015651 CN1281346C (en) | 2004-01-05 | 2004-01-05 | Plant restoring method of lead polluted soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410015651 CN1281346C (en) | 2004-01-05 | 2004-01-05 | Plant restoring method of lead polluted soil |
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| Publication Number | Publication Date |
|---|---|
| CN1555933A true CN1555933A (en) | 2004-12-22 |
| CN1281346C CN1281346C (en) | 2006-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410015651 Expired - Fee Related CN1281346C (en) | 2004-01-05 | 2004-01-05 | Plant restoring method of lead polluted soil |
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| Country | Link |
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| CN (1) | CN1281346C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100367844C (en) * | 2005-05-27 | 2008-02-13 | 南京农业大学 | Method for improving chelation evoked repairing efficiency |
| CN100427227C (en) * | 2006-09-07 | 2008-10-22 | 昆明理工大学 | Plant restoration method for lead pollution of soil |
| CN100457300C (en) * | 2006-07-27 | 2009-02-04 | 云南省环境科学研究院 | Method for repairing lead polluted soil using super enriching plant Tephrosia candida |
| CN100457301C (en) * | 2006-07-31 | 2009-02-04 | 云南省环境科学研究院 | Method for restoring soil polluted by lead by utilizing super enrichment plant-Debregeasia saeneb |
| CN101524702B (en) * | 2009-04-21 | 2010-12-08 | 辽宁石油化工大学 | Method for restoring lead polluted soil by in-situ strengthening plant |
| CN101014425B (en) * | 2004-09-10 | 2011-07-06 | 中部电力株式会社 | Method of purifiying heavy metal-containing soil |
| CN102189096A (en) * | 2010-03-05 | 2011-09-21 | 四川农业大学 | Remediation method for lead contamination in mine soil |
| CN102658291A (en) * | 2012-05-29 | 2012-09-12 | 江苏山水建设集团有限公司 | Method for improving vegetation containing lead tailing sand |
| CN105921513A (en) * | 2016-06-12 | 2016-09-07 | 武汉理工大学 | Method of accelerating accumulation of heavy metals cadmium and zinc by sedum alfredii hance |
| CN107876551A (en) * | 2017-08-24 | 2018-04-06 | 中国科学院地理科学与资源研究所 | Eight treasures (choice ingredients of certain special dishes) red-spotted stonecrop repairs method, activator and the application of cadmium and/or lead-contaminated soil |
| CN108906875A (en) * | 2018-07-05 | 2018-11-30 | 安徽袁粮水稻产业有限公司 | A kind of method for comprehensive repairing of lead contamination rice soil |
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| CN100518970C (en) * | 2007-02-16 | 2009-07-29 | 中国科学院南京土壤研究所 | Renovation method for plant in soil of zinc-cadmium combined pollution |
| CN109622604A (en) * | 2018-12-24 | 2019-04-16 | 北京农业智能装备技术研究中心 | A kind of method of phytoremediation lead-contaminated soil |
-
2004
- 2004-01-05 CN CN 200410015651 patent/CN1281346C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101014425B (en) * | 2004-09-10 | 2011-07-06 | 中部电力株式会社 | Method of purifiying heavy metal-containing soil |
| CN100367844C (en) * | 2005-05-27 | 2008-02-13 | 南京农业大学 | Method for improving chelation evoked repairing efficiency |
| CN100457300C (en) * | 2006-07-27 | 2009-02-04 | 云南省环境科学研究院 | Method for repairing lead polluted soil using super enriching plant Tephrosia candida |
| CN100457301C (en) * | 2006-07-31 | 2009-02-04 | 云南省环境科学研究院 | Method for restoring soil polluted by lead by utilizing super enrichment plant-Debregeasia saeneb |
| CN100427227C (en) * | 2006-09-07 | 2008-10-22 | 昆明理工大学 | Plant restoration method for lead pollution of soil |
| CN101524702B (en) * | 2009-04-21 | 2010-12-08 | 辽宁石油化工大学 | Method for restoring lead polluted soil by in-situ strengthening plant |
| CN102189096A (en) * | 2010-03-05 | 2011-09-21 | 四川农业大学 | Remediation method for lead contamination in mine soil |
| CN102658291A (en) * | 2012-05-29 | 2012-09-12 | 江苏山水建设集团有限公司 | Method for improving vegetation containing lead tailing sand |
| CN105921513A (en) * | 2016-06-12 | 2016-09-07 | 武汉理工大学 | Method of accelerating accumulation of heavy metals cadmium and zinc by sedum alfredii hance |
| CN107876551A (en) * | 2017-08-24 | 2018-04-06 | 中国科学院地理科学与资源研究所 | Eight treasures (choice ingredients of certain special dishes) red-spotted stonecrop repairs method, activator and the application of cadmium and/or lead-contaminated soil |
| CN108906875A (en) * | 2018-07-05 | 2018-11-30 | 安徽袁粮水稻产业有限公司 | A kind of method for comprehensive repairing of lead contamination rice soil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1281346C (en) | 2006-10-25 |
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