CN110369493A - A method of utilizing phytoremediation mercury contaminated soil - Google Patents
A method of utilizing phytoremediation mercury contaminated soil Download PDFInfo
- Publication number
- CN110369493A CN110369493A CN201910627779.2A CN201910627779A CN110369493A CN 110369493 A CN110369493 A CN 110369493A CN 201910627779 A CN201910627779 A CN 201910627779A CN 110369493 A CN110369493 A CN 110369493A
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- CN
- China
- Prior art keywords
- giantreed
- mercury
- soil
- phytoremediation
- contaminated soil
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The invention discloses a kind of methods using phytoremediation mercury contaminated soil.The method using phytoremediation mercury contaminated soil is sprinkled into fulvic acid, turns over to agricultural land soil the following steps are included: mercury contaminated agricultural land soil of the selection total mercury content between 30 ~ 150mg kg-1；Setting plantation block and gutter, the plantation block and distance between drains setting；The complete giantreed seedling cultivation of root system is chosen on the plantation block and carries out cultivation management, gathers in giantreed aerial part after giantreed maturation；Top dressing and fulvic acid are applied to the giantreed for having gathered in aerial part, and the soil on giantreed plant root periphery is turned over；It repeats, until mercury in soils content reaches environmental safety standard, reparation of the completion to mercury contaminated soil.The present invention provides a kind of method using phytoremediation mercury contaminated soil, and environmentally protective, integrated operation is simple, and processing cost is low, convenient for management, the reparation of the mercury contaminated soil suitable for large area.
Description
Technical field
The present invention relates to environmental technology fields, specifically, being related to a kind of method using phytoremediation mercury contaminated soil.
Background technique
Mercury is that a kind of pair of environment and human body endanger biggish element, with constantly mentioning for economic rapid growth and urbanization
Height, the mercury pollution problem very severe of soil, especially causes serious harm, investigation result to agricultural land soil in the whole country
Show that mercury contaminated soil constitutes significant threat to the quality of water environment and agricultural product, because the inorganic mercury in agricultural land soil can
Toxicity is bigger to be converted under sulfate reducing bacteria or chemical action, can pass through the methyl that food chain generates biological amplification
Mercury, and then the bioaccumulation effect of mercury is caused to occur.
Phytoremediation is using the mercury in plant absorption and Enriching soil, to achieve the purpose that purification soil, relative to object
Other restorative procedures such as reason, chemistry belong to safe, at low cost, environmentally friendly Heavy Metal Pollution Control measure, more adaptation ring
The requirement of border protection, is increasingly paid attention to by national governments.But there is also some drawbacks for phytoremediation mercury pollution, such as: arriving mesh
Before until, do not find the super enriching plant of mercury also；Most of mercury exists in the form of inertia in soil；Bioavailable state mercury content
Universal relatively low, individual phytoremediation, plants enriched amount is small, and repairing efficiency is long etc..
Summary of the invention
In order to solve the universal relatively low, plant of the above-mentioned method bioavailable state mercury content using phytoremediation mercury contaminated soil
The small technical problem of object enriching quantity, the present invention provides a kind of method using phytoremediation mercury contaminated soil, environmentally protective, whole
Easy to operate, processing cost is low, convenient for management, the reparation of the mercury contaminated soil suitable for large area.
The present invention provides a kind of methods using phytoremediation mercury contaminated soil, comprising the following steps:
Step 1: selection total mercury content is in 30 ~ 150mg kg-1Between mercury contaminated agricultural land soil, spread into agricultural land soil
Enter 0.3 ~ 15kg m-2Fulvic acid, then agricultural land soil is turned over；
Step 2: to after turning over agricultural land soil setting plantation block and gutter, the plantation block and the distance between drains set
It sets；
Step 3: choosing the complete giantreed seedling cultivation of root system on the plantation block and carrying out cultivation management, when giantreed maturation
Giantreed aerial part is gathered in afterwards；
Step 4: applying top dressing and fulvic acid to the giantreed for having gathered in aerial part, and to the soil on giantreed plant root periphery
It is turned over；
Step 5: repeating said steps four, until mercury in soils content reaches environmental safety standard, completion is to mercury contaminated soil
It repairs.
In a kind of preferred embodiment of the method provided by the invention using phytoremediation mercury contaminated soil, the step
One and the step 4 in, the depth turned over be 15 ~ 20cm.
In a kind of preferred embodiment of the method provided by the invention using phytoremediation mercury contaminated soil, the step
In two, the width of the plantation block is 100 ~ 150cm；The width in the gutter is 25 ~ 30cm, and depth is 10 ~ 15cm.
In a kind of preferred embodiment of the method provided by the invention using phytoremediation mercury contaminated soil, the step
In three, the plant spacing of the giantreed seedling is 2000 ~ 3000 plants/acre, and spacing in the rows is 25 ~ 30cm, and line-spacing is 35 ~ 45cm.
In a kind of preferred embodiment of the method provided by the invention using phytoremediation mercury contaminated soil, the step
In four, the top dressing is compound fertilizer, and amount of application is 20 ~ 30kg/ mus；The amount of application of the fulvic acid is 0.3 ~ 15kg m-2。
Compared to the prior art, the method provided by the invention using phytoremediation mercury contaminated soil has below beneficial to effect
Fruit: this method only needs for giantreed to be planted in mercury contaminated soil, giantreed can effectively absorb with the mercury in Enriching soil, reach
To the purpose of high-efficient purification soil, environmentally protective, integrated operation is simple, and processing cost is low, convenient for management, suitable for large area
The reparation of mercury contaminated soil provides new selection for the phytoremediation of mercury contaminated soil；And giantreed category perennial plant, can
To avoid the plantation repeatedly of annual plant, a large amount of human cost and time cost have been saved.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1
A method of utilizing phytoremediation mercury contaminated soil, comprising the following steps:
S1, selection total mercury content are in 30 ~ 150mg kg-1Between mercury contaminated agricultural land soil, be sprinkled into agricultural land soil
0.3~15kg•m-2Fulvic acid, then agricultural land soil is turned over, the depth turned over is 15cm；
S2, block and gutter, the plantation block and distance between drains setting, institute are planted to the agricultural land soil setting after turning over
The width for stating plantation block is 100cm；The width in the gutter is 25cm, depth 10cm；
S3, the selection complete giantreed seedling cultivation of root system on the plantation block and carry out cultivation management, the plant of giantreed seedling
Density is 2000 plants/acre, spacing in the rows 25cm, line-spacing 35cm, gathers in giantreed aerial part after giantreed maturation；
S4, top dressing and 0.3 ~ 15kg m are applied to the giantreed for having gathered in aerial part-2Fulvic acid, and to giantreed plant root
The soil on periphery is turned over, and the depth turned over is 15cm；The top dressing is compound fertilizer, and amount of application is 20kg/ mus；
S5, the S4 is repeated, until mercury in soils content reaches environmental safety standard, reparation of the completion to mercury contaminated soil.
Embodiment 2
A method of utilizing phytoremediation mercury contaminated soil, comprising the following steps:
S1, selection total mercury content are in 30 ~ 150mg kg-1Between mercury contaminated agricultural land soil, be sprinkled into agricultural land soil
0.3~15kg•m-2Fulvic acid, then agricultural land soil is turned over, the depth turned over is 17cm；
S2, block and gutter, the plantation block and distance between drains setting, institute are planted to the agricultural land soil setting after turning over
The width for stating plantation block is 130cm；The width in the gutter is 28cm, depth 13cm；
S3, the selection complete giantreed seedling cultivation of root system on the plantation block and carry out cultivation management, the plant of giantreed seedling
Density is 2500 plants/acre, spacing in the rows 28cm, line-spacing 40cm, gathers in giantreed aerial part after giantreed maturation；
S4, top dressing and 0.3 ~ 15kg m are applied to the giantreed for having gathered in aerial part-2Fulvic acid, and to giantreed plant root
The soil on periphery is turned over, and the depth turned over is 17cm；The top dressing is compound fertilizer, and amount of application is 25kg/ mus；
S5, the S4 is repeated, until mercury in soils content reaches environmental safety standard, reparation of the completion to mercury contaminated soil.
Embodiment 3
A method of utilizing phytoremediation mercury contaminated soil, comprising the following steps:
S1, selection total mercury content are in 30 ~ 150mg kg-1Between mercury contaminated agricultural land soil, be sprinkled into agricultural land soil
0.3~15kg•m-2Fulvic acid, then agricultural land soil is turned over, the depth turned over is 20cm；
S2, block and gutter, the plantation block and distance between drains setting, institute are planted to the agricultural land soil setting after turning over
The width for stating plantation block is 150cm；The width in the gutter is 30cm, depth 15cm；
S3, the selection complete giantreed seedling cultivation of root system on the plantation block and carry out cultivation management, the plant of giantreed seedling
Density is 3000 plants/acre, spacing in the rows 30cm, line-spacing 45cm, gathers in giantreed aerial part after giantreed maturation；
S4, top dressing and 0.3 ~ 15kg m are applied to the giantreed for having gathered in aerial part-2Fulvic acid, and to giantreed plant root
The soil on periphery is turned over, and the depth turned over is 20cm；The top dressing is compound fertilizer, and amount of application is 30kg/ mus；
S5, the S4 is repeated, until mercury in soils content reaches environmental safety standard, reparation of the completion to mercury contaminated soil.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (5)
1. a kind of method using phytoremediation mercury contaminated soil, which comprises the following steps:
Step 1: selection total mercury content is in 30 ~ 150mg kg-1Between mercury contaminated agricultural land soil, spread into agricultural land soil
Enter 0.3 ~ 15kg m-2Fulvic acid, then agricultural land soil is turned over；
Step 2: to after turning over agricultural land soil setting plantation block and gutter, the plantation block and the distance between drains set
It sets；
Step 3: choosing the complete giantreed seedling cultivation of root system on the plantation block and carrying out cultivation management, when giantreed maturation
Giantreed aerial part is gathered in afterwards；
Step 4: applying top dressing and fulvic acid to the giantreed for having gathered in aerial part, and to the soil on giantreed plant root periphery
It is turned over；
Step 5: repeating said steps four, until mercury in soils content reaches environmental safety standard, completion is to mercury contaminated soil
It repairs.
2. the method according to claim 1 using phytoremediation mercury contaminated soil, which is characterized in that the step 1 and
In the step 4, the depth turned over is 15 ~ 20cm.
3. the method according to claim 1 using phytoremediation mercury contaminated soil, which is characterized in that the step 2
In, the width of the plantation block is 100 ~ 150cm；The width in the gutter is 25 ~ 30cm, and depth is 10 ~ 15cm.
4. the method according to claim 1 using phytoremediation mercury contaminated soil, which is characterized in that the step 3
In, the plant spacing of the giantreed seedling is 2000 ~ 3000 plants/acre, and spacing in the rows is 25 ~ 30cm, and line-spacing is 35 ~ 45cm.
5. the method according to claim 1 using phytoremediation mercury contaminated soil, which is characterized in that the step 4
In, the top dressing is compound fertilizer, and amount of application is 20 ~ 30kg/ mus；The amount of application of the fulvic acid is 0.3 ~ 15kg m-2。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910627779.2A CN110369493A (en) | 2019-07-12 | 2019-07-12 | A method of utilizing phytoremediation mercury contaminated soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910627779.2A CN110369493A (en) | 2019-07-12 | 2019-07-12 | A method of utilizing phytoremediation mercury contaminated soil |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1586748A (en) * | 2004-08-05 | 2005-03-02 | 韩志萍 | Repairing wetland heavy metal pollution technology by Arundo donax Linn plant |
| CN109590317A (en) * | 2018-12-03 | 2019-04-09 | 铜仁学院 | The method for repairing mercury contaminated soil |
| CN109622601A (en) * | 2018-12-04 | 2019-04-16 | 浙江清华长三角研究院 | A method of utilizing Low Concentration Mercury polluted farmland soil in cotton and Indian mustard crop rotation reparation |
| CN109647876A (en) * | 2018-12-04 | 2019-04-19 | 浙江清华长三角研究院 | A method of utilizing Low Concentration Mercury polluted farmland soil in ramie nonoculture reparation |
-
2019
- 2019-07-12 CN CN201910627779.2A patent/CN110369493A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1586748A (en) * | 2004-08-05 | 2005-03-02 | 韩志萍 | Repairing wetland heavy metal pollution technology by Arundo donax Linn plant |
| CN109590317A (en) * | 2018-12-03 | 2019-04-09 | 铜仁学院 | The method for repairing mercury contaminated soil |
| CN109622601A (en) * | 2018-12-04 | 2019-04-16 | 浙江清华长三角研究院 | A method of utilizing Low Concentration Mercury polluted farmland soil in cotton and Indian mustard crop rotation reparation |
| CN109647876A (en) * | 2018-12-04 | 2019-04-19 | 浙江清华长三角研究院 | A method of utilizing Low Concentration Mercury polluted farmland soil in ramie nonoculture reparation |
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