CN101386018A - Cadmium pollution soil repair method using compositae - Google Patents
Cadmium pollution soil repair method using compositae Download PDFInfo
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- CN101386018A CN101386018A CNA2008102282261A CN200810228226A CN101386018A CN 101386018 A CN101386018 A CN 101386018A CN A2008102282261 A CNA2008102282261 A CN A2008102282261A CN 200810228226 A CN200810228226 A CN 200810228226A CN 101386018 A CN101386018 A CN 101386018A
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Abstract
The invention relates to a method for repairing cadmium contaminated soil by compositae. The adopted technical proposal is that mugwort is planted on the soil containing cadmium contaminants, when the mugwort grows to the maturing stage, the whole mugwort is removed from the contaminated soil; the mugwort is planted on the soil containing the cadmium contaminants, cultivated in the open air, and watered according to the soil water depletion condition, the soil moisture content is adjusted to 50-90% of the field moisture capacity; before the mugwort is planted on the soil containing the cadmium contaminants, every kilogram of soil is respectively added with 300-500mg of urea, 100-300mg of potassium dihydrogen phosphate and 200-400mg of potassium sulfate. The method is simple, easy, efficient and safe; the mugwort is adopted for phytoremediation, which has little environmental perturbation, and low soil deterioration; the accumulated heavy metals can be recovered by advanced technology while the environment is afforested, which creates certain economic benefit. The method has low cost, and is applicable to large-area heavy metal contaminated soil.
Description
Technical field
The present invention relates to a kind of biological renovation method of cadmium pollution soil, specifically a kind of method of utilizing feverfew argy wormwood cadmium pollution soil repair.
Background technology
China's heavy metal pollution of soil is very serious, particularly northern China heavy industry city.In all heavy metal pollution, cadmium is big with its mobility, toxicity is high becomes the most one of heavy metal pollution of paying close attention to.Therefore, restoring cadmium polluted soil has become China's soil sustainable use problem demanding prompt solution.
Phytoremediation technology is a kind of cheapness and effective heavy-metal contaminated soil improvements technology, and the emphasis of work is further to seek and develop enriching plant and the super enriching plant with good heritability at present.Argy wormwood (Artemisia argyi L é vl.et Van.) is a herbaceos perennial, becomes plant height to reach 1 meter, and is widely distributed in China.Its biomass height, well developed root system, growth rate are fast, strong to environmental suitability, and it is very extensive to distribute.
Summary of the invention
In order to address the above problem, the invention provides a kind of plant restoration method of simple, efficient, safe cadmium pollution soil.
To achieve these goals, the technical solution used in the present invention is: a kind of method of utilizing the feverfew cadmium pollution soil repair: plant argy wormwood containing on the soil of cadmium contaminants, when plant after outgrowth season, plant integral body is removed from contaminated soil; Contain on the soil of cadmium contaminants and plant argy wormwood, adopt cultivation in the open, according to soil lack of water situation, water, regulating soil moisture content is 50～90% of field capacity; On containing the soil of cadmium contaminants, before the plantation argy wormwood, in every kilogram soil, add 200～400 milligrams of 300～500 milligrams in urea, 100～300 milligrams of potassium dihydrogen phosphates and potassium sulfates respectively.
Described plantation argy wormwood is meant that the argy wormwood with the seedling phase is planted on the soil that contains cadmium contaminants.
The present invention can adopt the mode of multiple cropping, promptly grows after the maturity period first batch of argy wormwood, and plant integral body is removed from contaminated soil, plants second batch again, repeats said process, until final cadmium pollution soil repair.
The present invention has following advantage:
1. the absorbability of argy wormwood is strong, has concentration coefficient and the high characteristics of transhipment coefficient, and it can for good and all solve the environmental problem of soil heavy metal cadmium to absorption, enrichment and the extraction of heavy metal.It is few to environmental perturbation to utilize argy wormwood to carry out phytoremediation, and soil fail power is little.
2. the plantation of argy wormwood can be stablized the face of land, prevents that heavy-metal contaminated soil from causing contamination because of wind erosion or soil erosion, and can also prevent or reduce heavy metal contaminants to phreatic secondary pollution by the plant transpiration effect.
3. also afforested environment when utilizing the argy wormwood repairing polluted soil, and its heavy metal of accumulating can utilize advanced technology to reclaim, thereby create certain economic benefits.
4. the soil through repairing, its content of organic matter and soil fertility all can increase, and generally are applicable to proportion of crop planting, also can be used as other purposes, relatively meet the requirement of the strategy of sustainable development.
5. has very strong feasibility aspect treatment effect and repair time.Repairing effect: total cadmium amount 3.45mg of every basin soil, to repair through argy wormwood and can take away that the cadmium amount is 0.198mg in the basin, cadmium absorptivity once reaches 5.7%.Can make the total cadmium amount of soil decline 0.594mg in the basin according to 3 batches of calculating of plantation in a year, argy wormwood can reach 17.2% to the absorptivity of cadmium in such 1 year.Repair time: adorn native 900g with every basin, 3 strains of plantation argy wormwood, the cadmium total amount before repairing in every basin soil is 3.45mg, after argy wormwood was repaired, the cadmium total amount in every basin soil reached national soil secondary standard value 0.3mgkg
-1When (6.5＜pH＜7.5), be 5～6 years required repair time.
6. the cost of this technology is lower, is applicable to large-area heavy-metal contaminated soil.
The specific embodiment
Below in conjunction with example the present invention is further explained.
Embodiment 1
Soil sample is picked up from the arable layer in long term experiment field, mountain after the Agricultural University Of Shenyang, and (0～20cm), this soil is brown earth, is not subjected to heavy metal pollution.Natural air drying, smash to pieces, impurities removing and cross the 2mm sieve after, the 900g that weighs packs in the plastic tub (20cm (diameter) * 30cm (height)).(analyze pure CdCl with cadmium solution in every basin
22.5H
2O) form is added, and cadmium concentration is respectively 0,10,20,50,100mgkg
-1(oven-dried soil restatement).Add fully mixing of back, regulating soil moisture content is 70% of field capacity.Add urea 400mgkg respectively in every basin soil
-1, potassium dihydrogen phosphate 200mgkg
-1With potassium sulfate 300mgkg
-1, in order to nutrients such as N, P in the additional soil, K.Apply behind the fertilizer fully mixing, balance is after one week, transplants and grown 2 true leaves, grows fine, argy wormwood seedling of the same size, every basin 3 strains, duration of test regularly watered, through 3 months, along soil table clip overground part, collect the root sample, the cadmium content of soil and plant each several part is carried out determination and analysis.The results are shown in Table 1.
The enrichment and transhipment feature (mgkg of argy wormwood to cadmium handled in the single cadmium pollution of table 1
-1)
| Handle | Root | Stem | Leaf | On the ground | Ti |
| T1 | 0.3 | 0.1 | 0.4 | 0.29 | 1.67 |
| AC | — | — | — | — | |
| T2 | 34.5 | 29.7 | 47.6 | 35.12 | 2.01 |
| AC | 3.45 | 2.97 | 4.76 | 3.90 | |
| T3 | 55.4 | 47.9 | 67.8 | 61.19 | 2.09 |
| AC | 2.77 | 2.40 | 3.39 | 3.06 | |
| T4 | 88.2 | 63.8 | 125.9 | 105.59 | 2.15 |
| AC | 1.76 | 1.28 | 2.52 | 2.11 | |
| T5 | 164.6 | 76.6 | 147.5 | 111.14 | 1.36 |
| AC | 1.65 | 0.77 | 1.48 | 1.11 |
AC is a concentration coefficient, and Ti is respectively cadmium and adds concentration 0,10,20,50,100mgkg for transhipment coefficient, T1～T5
-1
Treatment effect: artificially adding single cadmium concentration is 50mgkg
-1The time, the cadmium content of argy wormwood aerial part is 105.59mgkg
-1, surpassed the critical content standard value 100mgkg of cadmium hyperaccumulative plant
-1, argy wormwood root, stem, the descending order of leaf 3 part organ cadmium cumulants are: leaf〉and root〉stem.Under this concentration, argy wormwood aerial part concentration coefficient is 2.11, and transporting coefficient simultaneously, to reach maximum be 2.15, and promptly argy wormwood overground part cadmium content is greater than root cadmium content, S/R〉1.Therefore, can confirm that argy wormwood is a kind of cadmium hyperaccumulative plant.
Embodiment 2
Soil sample is picked up from Song three dirty irrigated areas, soil natural is air-dry, smash to pieces, impurities removing and cross the 2mm sieve after, the 900g that weighs packs in the plastic tub.Add urea 400mgkg respectively in every basin soil
-1, potassium dihydrogen phosphate 200mgkg
-1With potassium sulfate 300mgkg
-1, in order to nutrients such as N, P in the additional soil, K.Apply behind the fertilizer fully mixing, balance is after one week, transplants and grown 2 true leaves, grows fine, argy wormwood seedling of the same size, every basin 3 strains, duration of test regularly watered, through 3 months, along soil table clip overground part, collect the root sample, the cadmium content of soil and plant each several part is carried out determination and analysis.The results are shown in Table 2.
Argy wormwood was to the enrichment and transhipment feature (mgkg of cadmium under table 2 combined pollution was handled
-1)
| Heavy metal | Root | Stem | Leaf | On the ground | AC | Ti |
| Cd | 12.33±1.51 | 8.93±1.23 | 20.83±2.04 | 15.94±0.98 | 3.98 | 1.31 |
| Cu | 10.67±1.30 | 17.88±1.07 | 24.52±1.42 | 24.52±1.42 | 0.70 | 2.35 |
| Zn | 62.03±4.55 | 120.65±14.08 | 90.08±8.50 | 102.30±9.93 | 0.32 | 1.68 |
| Pb | 74.67±4.17 | 21.17±1.38 | 41.00±1.54 | 33.29±1.32 | 0.21 | 0.44 |
AC is a concentration coefficient, and Ti is the transhipment coefficient.
Treatment effect: Song's three contaminated soil cadmium total amounts and available state content are about 3.82mgkg respectively
-1And 2.23mgkg
-1Under this cadmium pollution concentration, poisoning symptom does not appear in argy wormwood, and plant strain growth is normal, and its concentration coefficient and transhipment coefficient reach 3.98 and 1.31 respectively, and argy wormwood root, stem, the descending order of leaf 3 part organ cadmium cumulants are: leaf〉root〉stem.
Repairing effect: total cadmium amount 3.45mg (every basin is adorned native 900g) of every basin soil, to repair through argy wormwood and can take away that the cadmium amount is 0.198mg in the basin, cadmium absorptivity once reaches 5.7%.Can make the total cadmium amount of soil decline 0.594mg in the basin according to 3 batches of calculating of plantation in a year, argy wormwood can reach 17.2% to the absorptivity of cadmium in such 1 year.Adorn native 900g with every basin, 3 strains of plantation argy wormwood, the cadmium total amount before repairing in every basin soil is 3.45mg, after argy wormwood was repaired, the cadmium total amount in every basin soil reached national soil secondary standard value 0.3mgkg
-1(6.5＜pH＜7.5), be 5～6 years required repair time.As seen, utilizing argy wormwood to administer Song's three combined contamination soils is being feasible aspect effect and repair time.
Claims (2)
1, a kind of method of utilizing the feverfew cadmium pollution soil repair is characterized in that: plant argy wormwood containing on the soil of cadmium contaminants, and long after the maturity period when argy wormwood, argy wormwood integral body is removed from contaminated soil; Plant argy wormwood containing on the soil of cadmium contaminants, adopt cultivation in the open, according to soil lack of water situation, water, regulating soil moisture content is 50～90% of field capacity; On containing the soil of cadmium contaminants, before the plantation argy wormwood, in every kilogram soil, add 200～400 milligrams of 300～500 milligrams in urea, 100～300 milligrams of potassium dihydrogen phosphates and potassium sulfates respectively.
2,, it is characterized in that described plantation argy wormwood is meant that the argy wormwood with the seedling phase is planted on the soil that contains cadmium contaminants according to the described method of utilizing the feverfew cadmium pollution soil repair of claim 1.
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| CNA2008102282261A CN101386018A (en) | 2008-10-22 | 2008-10-22 | Cadmium pollution soil repair method using compositae |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786097A (en) * | 2010-03-03 | 2010-07-28 | 彭国平 | Phytoremediation technology for heavy metal contaminated soil |
| CN101954372A (en) * | 2010-09-14 | 2011-01-26 | 南京农业大学 | Application of jerusalem artichokes in repairing cadmium (Cd) polluted environment |
| CN101670359B (en) * | 2009-10-30 | 2011-06-29 | 四川农业大学 | Application of polygonum chinense L. in restoring cadmium pollution of mining soil and sludge |
| CN102172608A (en) * | 2011-01-24 | 2011-09-07 | 四川农业大学 | Application of artemisia stolonifera in repairing of heavy metal cadmium polluted soil |
| CN102310074A (en) * | 2010-07-01 | 2012-01-11 | 淮南矿业(集团)有限责任公司 | Method for repairing cadmium polluted soil by compositae plants |
| RU2455812C2 (en) * | 2009-12-21 | 2012-07-20 | Федеральное государственное образовательное учреждение высшего профессионального образования Кабардино-Балкарская государственная сельскохозяйственная академия им. В.М. Кокова | Method of soil detoxification |
| CN102826925A (en) * | 2012-08-30 | 2012-12-19 | 中国农业大学 | Rhizosphere regulating agent for promoting cadmium-contaminated soil phytoremediation and application method thereof |
| CN102873085A (en) * | 2012-09-28 | 2013-01-16 | 中国科学技术大学 | Phytoremediation method for soil polluted by antimony and application of phytoremediation method |
| CN104785513A (en) * | 2015-04-13 | 2015-07-22 | 辽宁石油化工大学 | Phytoremediation method for cadmium-zinc compound contaminated soil |
| CN108817078A (en) * | 2018-07-31 | 2018-11-16 | 西施生态科技股份有限公司 | A method of utilizing compositae plant cadmium pollution soil repair |
| CN109731908A (en) * | 2019-01-30 | 2019-05-10 | 中国科学院亚热带农业生态研究所 | A method of light moderate heavy-metal contaminated soil is repaired using artemisia selengensis |
| CN110293128A (en) * | 2019-07-24 | 2019-10-01 | 中国科学院亚热带农业生态研究所 | A method of light moderate heavy-metal contaminated soil is repaired using mugwort wormwood artemisia |
-
2008
- 2008-10-22 CN CNA2008102282261A patent/CN101386018A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670359B (en) * | 2009-10-30 | 2011-06-29 | 四川农业大学 | Application of polygonum chinense L. in restoring cadmium pollution of mining soil and sludge |
| RU2455812C2 (en) * | 2009-12-21 | 2012-07-20 | Федеральное государственное образовательное учреждение высшего профессионального образования Кабардино-Балкарская государственная сельскохозяйственная академия им. В.М. Кокова | Method of soil detoxification |
| CN101786097A (en) * | 2010-03-03 | 2010-07-28 | 彭国平 | Phytoremediation technology for heavy metal contaminated soil |
| CN102310074A (en) * | 2010-07-01 | 2012-01-11 | 淮南矿业(集团)有限责任公司 | Method for repairing cadmium polluted soil by compositae plants |
| CN101954372A (en) * | 2010-09-14 | 2011-01-26 | 南京农业大学 | Application of jerusalem artichokes in repairing cadmium (Cd) polluted environment |
| CN102172608A (en) * | 2011-01-24 | 2011-09-07 | 四川农业大学 | Application of artemisia stolonifera in repairing of heavy metal cadmium polluted soil |
| CN102826925A (en) * | 2012-08-30 | 2012-12-19 | 中国农业大学 | Rhizosphere regulating agent for promoting cadmium-contaminated soil phytoremediation and application method thereof |
| CN102873085A (en) * | 2012-09-28 | 2013-01-16 | 中国科学技术大学 | Phytoremediation method for soil polluted by antimony and application of phytoremediation method |
| CN104785513A (en) * | 2015-04-13 | 2015-07-22 | 辽宁石油化工大学 | Phytoremediation method for cadmium-zinc compound contaminated soil |
| CN108817078A (en) * | 2018-07-31 | 2018-11-16 | 西施生态科技股份有限公司 | A method of utilizing compositae plant cadmium pollution soil repair |
| CN109731908A (en) * | 2019-01-30 | 2019-05-10 | 中国科学院亚热带农业生态研究所 | A method of light moderate heavy-metal contaminated soil is repaired using artemisia selengensis |
| CN110293128A (en) * | 2019-07-24 | 2019-10-01 | 中国科学院亚热带农业生态研究所 | A method of light moderate heavy-metal contaminated soil is repaired using mugwort wormwood artemisia |
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Open date: 20090318 |