CN102380506A - Method for reclaiming heavy metal-polluted soil - Google Patents
Method for reclaiming heavy metal-polluted soil Download PDFInfo
- Publication number
- CN102380506A CN102380506A CN2011102867633A CN201110286763A CN102380506A CN 102380506 A CN102380506 A CN 102380506A CN 2011102867633 A CN2011102867633 A CN 2011102867633A CN 201110286763 A CN201110286763 A CN 201110286763A CN 102380506 A CN102380506 A CN 102380506A
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- Prior art keywords
- soil
- heavy metal
- heavy
- bluish dogbane
- contaminated soil
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- 239000002689 soil Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 34
- 241000722949 Apocynum Species 0.000 claims description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- 241000196324 Embryophyta Species 0.000 claims description 6
- 229910052793 cadmium Inorganic materials 0.000 claims description 6
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003337 fertilizer Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 2
- 239000011133 lead Substances 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 239000002028 Biomass Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000005065 mining Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 235000017060 Arachis glabrata Nutrition 0.000 description 2
- 244000105624 Arachis hypogaea Species 0.000 description 2
- 235000010777 Arachis hypogaea Nutrition 0.000 description 2
- 235000018262 Arachis monticola Nutrition 0.000 description 2
- 244000178993 Brassica juncea Species 0.000 description 2
- 235000005855 Brassica juncea var. subintegrifolia Nutrition 0.000 description 2
- 240000008067 Cucumis sativus Species 0.000 description 2
- 235000010799 Cucumis sativus var sativus Nutrition 0.000 description 2
- 240000000797 Hibiscus cannabinus Species 0.000 description 2
- 235000015928 Hibiscus cannabinus Nutrition 0.000 description 2
- 240000008436 Ipomoea aquatica Species 0.000 description 2
- 235000019004 Ipomoea aquatica Nutrition 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000020232 peanut Nutrition 0.000 description 2
- 239000003516 soil conditioner Substances 0.000 description 2
- 238000004162 soil erosion Methods 0.000 description 2
- 244000052363 Cynodon dactylon Species 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 240000003589 Impatiens walleriana Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241001330453 Paspalum Species 0.000 description 1
- 241000173219 Paspalum distichum Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 241001464837 Viridiplantae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 230000003050 macronutrient Effects 0.000 description 1
- 235000021073 macronutrients Nutrition 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 229940023569 palmate Drugs 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000005418 vegetable material Substances 0.000 description 1
- 235000016804 zinc Nutrition 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for reclaiming heavy metal-polluted soil. In the method, ambary is grown in the soil polluted by the heavy metal. According to the invention, a fiber crop ambary with the characteristics of heavy metal resistance, barrenness, large biomass, robust roots and the like is used in the method, and the purposes of reclamation, water and soil maintenance, heavy metal fixing and the like can be achieved by planting the ambary on the Multi-metal polluted soil. The method of the invention has economic value and landscape value, and is suitable for popularizing in the heavy metal-polluted farmland and waste land near the mine.
Description
?
Technical field
The present invention relates to the reparation and the application technology of heavy-metal contaminated soil, be specifically related to a kind of utilize the fibre crops bluish dogbane (
Hibiscus cannabinus) method of the various heavy of reclaiming contaminated soil.
Background technology
The heavy metal pollution of soil that activities such as mining, ore dressing and smelting cause has become an environmental problem that is on the rise.What the data of Ministry of Land and Resources showed that the whole nation in 2010 tills the land area has received heavy metal pollution more than 10%; The data of Chinese Ministry of Environmental Protection also show the national grain that receives heavy metal pollution every year up to 1,200 ten thousand tons, and the direct economic loss that causes is above 20,000,000,000 yuan.Heavy metal pollution has caused very important influence for agricultural production, Environmental security and human health on a large scale.
Owing to can't remove large-area heavy metal pollution of soil in a short time; Simultaneously because the structural inconsistency that China has a large population and a few land; Therefore how reasonably to utilize the soil that receives heavy metal pollution; And then the minimizing soil erosion, prevent that the further diffusion etc. of heavy metal from having become the problem that government, academia and business circles are paid close attention to.
At present; Aspect the utilizing of heavy metal pollution soil; Still have following problem: (1) is utilizing the heavy metal pollution soil to carry out aspect the agricultural production; What the present stage concern was more is the screening varieties of edible crops, but this has bigger food safety risk, particularly plantation edible crops in the soil of high pollution; (2) reclaim and prevent aspect the contamination that method commonly used at present is a plantation heavy metal patience plant at contaminated soil, as root of bud dog (
C.dactylon), Paspalum distichum (
Paspalum distichumL.) etc., though these plants can adapt to various poor soil conditions, landscape effect is not good, and lacks economic worth.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of and in heavy-metal contaminated soil, reclaim, have the method for economic worth simultaneously concurrently.
A kind of method of the heavy-metal contaminated soil of reclaiming comprises: in heavy-metal contaminated soil, plant bluish dogbane.
To characteristics such as the high concentration heavy-metal residual of heavy-metal contaminated soil, macronutrient scarcity, soil texture differences; The present invention is in earlier stage a large amount of screening operation bases; The plant that obtains this excellence of the bluish dogbane material of reclaiming: its drought-enduring, impoverishment tolerant; Can on many metallic pollutions soil such as the lead of pH >=4, zinc, copper, cadmium, arsenic, grow, and few to the uptake of heavy metal.
Vegetable material used herein is available from Chinese crudefiber crop research institute, and concrete grammar is managed according to general bluish dogbane kind method for planting for directly in heavy-metal contaminated soil, sowing bluish dogbane, gathers in the crops after 150 days-180 days to get final product.Can suitably use chemical fertilizer or fertilizer, to improve output.
The taxology characteristic of the fibre crops bluish dogbane that the present invention is used is following:
Bluish dogbane (
Hibiscus cannabinus), annual herb, stem is upright, and is high 3～5 meters, thick 1.5～2.0 centimetres, is green, purple, red or light red.Leaf divides palmate decomposite leaf type and wealthy ovum blade profile.Spend yellowish or milky, style 5 splits, and column cap is purple or red.Capsule, seed are kidney shape.
Compared with prior art, the present invention has following beneficial effect:
(1) fibre crops bluish dogbane used in the present invention has fast growth, and biomass is big, characteristics such as well developed root system, and have stronger heavy metal patience, and be adapted at planting in the heavy-metal contaminated soil, can effectively prevent the diffusion and the soil erosion of heavy metal pollution;
(2) fibre crops bluish dogbane used in the present invention has characteristics drought-enduring, impoverishment tolerant, requires low to liquid manure;
(3) fibre crops bluish dogbane used in the present invention has the few characteristics of heavy metal uptake, and plantation can not influence the quality of its stem stalk in heavy-metal contaminated soil;
(4) fibre crops bluish dogbane used in the present invention, its stem micromicro is used to make paper, fiberboard etc., has higher economic value;
(5) fibre crops bluish dogbane used in the present invention is non-edible crops, with respect to the edible crops, can effectively reduce the risk that heavy metal gets into human body;
(6) the high 3-5 rice of fibre crops bluish dogbane used in the present invention is the green plants that yields positive results, and has good landscape effect;
(7) fibre crops bluish dogbane used in the present invention can reduce the content of heavy metal in soil gradually through plantation for many years.
The specific embodiment:
Embodiment 1: the reclaim screening of industrial crops of heavy-metal contaminated soil
According to the natural conditions of big Golconda mining area periphery polluted agricultural land, choose with pea, cucumber, the peanut of seed for edible part; With water spinach, the leaf mustard of leaf for edible part; Three major types industrial crops such as fibre crops bluish dogbane are as test material.Be about at the contaminated soil total metals: plumbous 1500mg/kg, zinc 470mg/kg, copper 660mg/kg, cadmium 9.7mg/kg, pH plants on the soil between the 2-3, suitably applies soil conditioner (like lime stone, dolomite, flyash etc.) and regulates pH.Selecting the content of beary metal of edible part is performance assessment criteria.The result finds: the content of the leaf lead of water spinach, leaf mustard, zinc, copper, cadmium surpasses pollutant limit standard in the state food significantly; And plumbous content also exceeds standard in the peanut seed of pea beanpod, cucumber pericarp, some processing.And select the reclaim plant of this unedible industrial crops of bluish dogbane for use as heavy-metal contaminated soil, can effectively reduce human health risk.
Embodiment 2: big Golconda mining area, Guangdong Province periphery polluted agricultural land is reclaimed
In 1 mu in big Golconda mining area periphery high pollution agro-farming abandoned land plantation bluish dogbane.This area's contaminated soil total metals is about: plumbous 1500mg/kg, and zinc 470mg/kg, copper 660mg/kg, cadmium 9.7mg/kg, pH are between 2-3, and pollution level is higher, and general crops can't grow.Suitably applying soil conditioner (like lime stone, dolomite, flyash etc.) is transferred to pH more than 6.The bluish dogbane of on soil, planting again, and manage according to the bluish dogbane kind method for planting in the general agricultural land soil, its output is more than 20t/ha; Reach normal agricultural land soil yield level, the total metals of bluish dogbane skin is: plumbous < 6mg/>kg, zinc < 140mg/>kg; Copper < 12mg/>kg, cadmium < 1.5mg/>kg.
Embodiment 3: mining area, Geju City, Yunnan Province periphery polluted agricultural land is reclaimed
Da Tun ballast metallic pollution farmland plantation bluish dogbane is 2 hectares in Geju City, Yunnan.This area's contaminated soil content of beary metal is about: plumbous 3000mg/kg, zinc 1500mg/kg, copper 400mg/kg, arsenic 800mg/kg.Soil pH is between 6-7.In contaminated soil, directly sow bluish dogbane, and manage according to the bluish dogbane kind method for planting in the general agricultural land soil.Bluish dogbane output reaches normal agricultural land soil yield level more than 25t/ha.
Claims (4)
1. the method for the heavy-metal contaminated soil of reclaiming is characterized in that: in heavy-metal contaminated soil, plant bluish dogbane.
2. the method for claim 1 is characterized in that, described heavy-metal contaminated soil is meant lead, zinc, copper, cadmium, As polluted soil.
3. the method for claim 1 is characterized in that, the time of said plantation bluish dogbane is 150-180 days, can gather in the crops.
4. the method for claim 1 is characterized in that, uses chemical fertilizer or fertilizer during said plantation bluish dogbane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102867633A CN102380506A (en) | 2011-09-26 | 2011-09-26 | Method for reclaiming heavy metal-polluted soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102867633A CN102380506A (en) | 2011-09-26 | 2011-09-26 | Method for reclaiming heavy metal-polluted soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102380506A true CN102380506A (en) | 2012-03-21 |
Family
ID=45820575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102867633A Pending CN102380506A (en) | 2011-09-26 | 2011-09-26 | Method for reclaiming heavy metal-polluted soil |
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| Country | Link |
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| CN (1) | CN102380506A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102934581A (en) * | 2012-11-22 | 2013-02-20 | 中国科学院亚热带农业生态研究所 | Planting method of flax in heavy-metal contaminated soil |
| CN102989753A (en) * | 2012-12-04 | 2013-03-27 | 常州大学 | Method for assisting vegetable crops to restore Cd-Zn-Pb composite contaminated soil by EDTA (Ethylene Diamine Tetraacetic Acid) |
| CN102989752A (en) * | 2012-12-04 | 2013-03-27 | 常州大学 | Method for assisting vegetable crops to restore Cd-Cu-Pb composite contaminated soil by EDTA (Ethylene Diamine Tetraacetic Acid) |
| CN103947326A (en) * | 2014-05-12 | 2014-07-30 | 中山大学 | Method for ionic rare earth mine tailing land improvement and vegetation reclamation |
| CN106550749A (en) * | 2016-10-28 | 2017-04-05 | 中国农业科学院麻类研究所 | It is a kind of to strengthen the method that bluish dogbane absorbs Cd in soil |
| CN110038884A (en) * | 2019-06-05 | 2019-07-23 | 湖南鹏田农业科技有限公司 | It is a kind of to improve bluish dogbane to the processing method of heavy metal cadmium remediation efficiency in acid soil |
| CN113058984A (en) * | 2021-03-25 | 2021-07-02 | 中山大学 | Phytoremediation method for heavily cadmium-lead polluted farmland |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102934581A (en) * | 2012-11-22 | 2013-02-20 | 中国科学院亚热带农业生态研究所 | Planting method of flax in heavy-metal contaminated soil |
| CN102934581B (en) * | 2012-11-22 | 2013-09-04 | 中国科学院亚热带农业生态研究所 | Planting method of flax in heavy-metal contaminated soil |
| CN102989753A (en) * | 2012-12-04 | 2013-03-27 | 常州大学 | Method for assisting vegetable crops to restore Cd-Zn-Pb composite contaminated soil by EDTA (Ethylene Diamine Tetraacetic Acid) |
| CN102989752A (en) * | 2012-12-04 | 2013-03-27 | 常州大学 | Method for assisting vegetable crops to restore Cd-Cu-Pb composite contaminated soil by EDTA (Ethylene Diamine Tetraacetic Acid) |
| CN103947326A (en) * | 2014-05-12 | 2014-07-30 | 中山大学 | Method for ionic rare earth mine tailing land improvement and vegetation reclamation |
| CN106550749A (en) * | 2016-10-28 | 2017-04-05 | 中国农业科学院麻类研究所 | It is a kind of to strengthen the method that bluish dogbane absorbs Cd in soil |
| CN106550749B (en) * | 2016-10-28 | 2019-05-21 | 中国农业科学院麻类研究所 | A method of enhancing bluish dogbane absorbs Cd in soil |
| CN110038884A (en) * | 2019-06-05 | 2019-07-23 | 湖南鹏田农业科技有限公司 | It is a kind of to improve bluish dogbane to the processing method of heavy metal cadmium remediation efficiency in acid soil |
| CN113058984A (en) * | 2021-03-25 | 2021-07-02 | 中山大学 | Phytoremediation method for heavily cadmium-lead polluted farmland |
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Application publication date: 20120321 |