CN110340137A - A kind of heavy-metal contaminated soil restorative procedure - Google Patents
A kind of heavy-metal contaminated soil restorative procedure Download PDFInfo
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- CN110340137A CN110340137A CN201910659705.7A CN201910659705A CN110340137A CN 110340137 A CN110340137 A CN 110340137A CN 201910659705 A CN201910659705 A CN 201910659705A CN 110340137 A CN110340137 A CN 110340137A
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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
- B09C1/08—Reclamation of contaminated soil chemically
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a kind of heavy-metal contaminated soil restorative procedures, including step are as follows: the contaminated soil place for treating improvement is checked, if it was found that when dangerous content leaks, the source of leaks for removing dangerous substance is taken timely measure immediately, and the soil in contaminated soil place is sampled, analyze pollutant classification and pollution range on the contaminated soil place；The contaminated soil place is dug clearly, determines that the range dug clearly reaches the boundary of pollution range, then soil conditioner is spread on to the surface layer of soil, and plough under in soil；Soil place is backfilled, then is carried out an acceptance inspection to soil place, the soil place repaired.Through the above way, the present invention, to the sampling of soil and the selection of later period soil conditioner, can there is extraordinary repairing effect by early period to the soil of heavy metal pollution, high-efficient, low in cost, it is easy to operate, it is ensured that crop growth and people live no security risk.
Description
Technical field
The present invention relates to contaminated soil Treatment process fields, more particularly to a kind of heavy-metal contaminated soil restorative procedure.
Background technique
Soil is one layer of unconsolidated material of earth land surface, by various mineral in granular form, organic substance, moisture, air,
The composition such as microorganism.Soil not only provides mechanical support ability for plant growth, and can provide for plant growth and development required
The fertility element such as water, fertilizer, air and heat.Due to population sharp increase, industry is grown rapidly, and solid waste is constantly to soil surface
It stacks and topples over, harmful waste water is constantly permeated into soil, and the pernicious gas and floating dust in atmosphere are also constantly dropped to rainwater
In soil.It is excessive when containing harmful substance in soil, more than the self-purification capacity of soil, will cause composition of the soil, structure and
Function changes, and microbial activities is suppressed, and harmful substance or its decomposition product gradually accumulate in the soil, and people eats this
The plant of kind soil plantation, or the water for flowing through this soil was drunk, the health of meeting harmful to human.Heavy metal in soil can pass through
Food chain migration and enrichment indirect enrichment generate health risk in human body, it is therefore desirable to there is heavy metal pollution
Soil repaired.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of heavy-metal contaminated soil restorative procedure, regulation effect is good.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of heavy-metal contaminated soil is provided
Restorative procedure, including step are as follows:
(1) the contaminated soil place for treating improvement is checked, if find dangerous content leaks, is taken in time immediately
The source of leaks of dangerous substance is removed in measure, and is sampled to the soil in the contaminated soil place, and the contaminated soil is analyzed
Pollutant classification and pollution range on place；
(2) the contaminated soil place dug clearly according to pollution range that step (1) determines, determines and described digs clearly
Range reaches the boundary of pollution range, then soil conditioner is spread on to the surface layer of soil, and ploughs under in soil, wherein the soil
Conditioner includes hydroxyl rock phosphate in powder, red mud, pyroligneous acid, lime, steel slag, adsorbent, charcoal, calcium dihydrogen phosphate and ferric sulfate；
(3) soil place is backfilled, then carried out an acceptance inspection to the soil place, the soil place repaired.
In a preferred embodiment of the present invention, sampling depth when sampling described in step (1) is to ensure that heterogeneity
At least one soil sampling of soil layer.
In a preferred embodiment of the present invention, it is layouted in step (1) by random distributed points method, layout method, system of judgement
Method, subregion layout what one or more of method was sampled in conjunction with the soil to the contaminated soil place.
In a preferred embodiment of the present invention, determine that the range dug clearly reaches the side of pollution range in step (2)
Boundary is to be sampled by the side wall on pollution range boundary with hole bottom and detect to obtain.
In a preferred embodiment of the present invention, the content of soil conditioner each component described in step (2) are as follows: with weight
Part meter, 20-25 parts of hydroxyl rock phosphate in powder, 10-13 parts of red mud, 2-5 parts of pyroligneous acid, 20-25 parts of lime, 5-8 parts of steel slag, adsorbent 2-
4 parts, 16-20 parts of charcoal, 12-15 parts of calcium dihydrogen phosphate, 1-3 parts of ferric sulfate.
In a preferred embodiment of the present invention, adsorbent described in step (2) is one of montmorillonite, zeolite or two
Kind mixing.
In a preferred embodiment of the present invention, further include in step (3) check and accept after the later period be managed, final-period management is
It is once monitored every 1-2.
The beneficial effects of the present invention are: heavy-metal contaminated soil restorative procedure of the invention, adopts soil by early period
The selection of sample and later period soil conditioner can have extraordinary repairing effect to the soil of heavy metal pollution, high-efficient, at low cost
It is honest and clean, it is easy to operate, the content of heavy metal in soil can be made to comply with the national standard requirements, it is ensured that crop growth and people live
Life is without security risk.
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 one:
A kind of heavy-metal contaminated soil restorative procedure, including step are provided are as follows:
(1) the contaminated soil place for treating improvement is checked, during detection, if finding dangerous content leaks
When, it is assessed with the extent of injury the case where leakage rapidly, collect the information of leakage situation, taken timely measure immediately clear
Except the source of leaks of dangerous substance；
(2) soil in the contaminated soil place is sampled, when sampling will prevent from intersecting dirty and secondary pollution, sampling
Depth is ensured that at least one soil sampling of heterogeneity soil layer, and vertically make a variation biggish soil especially for soil properties
When earth, the point arrangement method that when sampling uses has random distributed points method, judgement layout method, subregion of method, system of layouting to layout in method
It is one or more of combine, pollutant classification and pollution range on the contaminated soil place are analyzed, wherein the random distributed points
Method is suitable for pollution uniform soil respectively, and the judgement layouts method suitable for the specific soil of potential pollution, the system cloth
Point method have universality, the subregion layout method be suitable for pollute respectively it is uneven and it is known pollute distribution situation soil；
(3) the contaminated soil place dug clearly according to pollution range that step (2) determine, determines and described digs clearly
Range reaches the boundary of pollution range, can be sampled by the side wall on pollution range boundary with hole bottom, according to detection
As a result it determines, it is subsequent without doing over again again after all repairing to prevent；
(4) soil conditioner is spread on to the surface layer of soil, and is ploughed under in soil, it is right for administering the soil of heavy metal pollution
It in other pollutant classifications, chooses corresponding repair mode and is administered, wherein the soil conditioner includes hydroxyl phosphorus ore
Stone, red mud, pyroligneous acid, lime, steel slag, adsorbent, charcoal, calcium dihydrogen phosphate and ferric sulfate, the soil conditioner each group
The content divided are as follows: in parts by weight, 23 parts of hydroxyl rock phosphate in powder, 12 parts of red mud, 3 parts of pyroligneous acid, 23 parts of lime, 6 parts of steel slag, illiteracy are de-
1 part of stone, 2 parts of zeolite, 18 parts of charcoal, 13 parts of calcium dihydrogen phosphate, 2 parts of ferric sulfate, according to the size in soil place, selection is suitable
The soil conditioner of quality；
(5) soil place is backfilled, it is ensured that the foundation pit in soil place is anti-to blend the perfect of earth's surface barrier measures, then right
The soil place carries out an acceptance inspection, and the later period is managed after examination, and final-period management is once monitored every 1-2, obtains
The soil place repaired.
Embodiment two:
A kind of heavy-metal contaminated soil restorative procedure is provided, remaining step is the same as example 1.The difference is that step (4)
Described in soil conditioner include hydroxyl rock phosphate in powder, red mud, pyroligneous acid, lime, steel slag, adsorbent, charcoal, calcium dihydrogen phosphate
And ferric sulfate, the content of the soil conditioner each component are as follows: in parts by weight, 20 parts of hydroxyl rock phosphate in powder, 13 parts of red mud, the wooden vinegar
Sour 2 parts, 25 parts of lime, 5 parts of steel slag, 4 parts of montmorillonite, 16 parts of charcoal, 15 parts of calcium dihydrogen phosphate, 1 part of ferric sulfate, according to soil
The size in place selects the soil conditioner of appropriate mass.
Embodiment three:
A kind of heavy-metal contaminated soil restorative procedure is provided, remaining step is the same as example 1.The difference is that step (4)
Described in soil conditioner include hydroxyl rock phosphate in powder, red mud, pyroligneous acid, lime, steel slag, adsorbent, charcoal, calcium dihydrogen phosphate
And ferric sulfate, the content of the soil conditioner each component are as follows: in parts by weight, 25 parts of hydroxyl rock phosphate in powder, 10 parts of red mud, the wooden vinegar
Sour 5 parts, 20 parts of lime, 8 parts of steel slag, 2 parts of zeolite, 20 parts of charcoal, 12 parts of calcium dihydrogen phosphate, 3 parts of ferric sulfate, according to soil field
The size on ground selects the soil conditioner of appropriate mass.
The beneficial effects of the present invention are:
One, the heavy-metal contaminated soil restorative procedure is by early period to the sampling of soil and the choosing of later period soil conditioner
It takes, can have extraordinary repairing effect to the soil of heavy metal pollution, this soil conditioner has the improvement of heavy metal pervasive
Property；
Two, the heavy-metal contaminated soil restorative procedure is high-efficient, low in cost, easy to operate, can make weight in soil
The content of metal complies with the national standard requirements, it is ensured that crop growth and people live no security risk.
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 (7)
1. a kind of heavy-metal contaminated soil restorative procedure, which is characterized in that including step are as follows:
(1) the contaminated soil place for treating improvement is checked, if find dangerous content leaks, is taken timely measure immediately
The source of leaks of dangerous substance is removed, and the soil in the contaminated soil place is sampled, analyzes the contaminated soil place
Upper pollutant classification and pollution range；
(2) the contaminated soil place is dug clearly according to the pollution range that step (1) determines, determines the range dug clearly
Reach the boundary of pollution range, then soil conditioner is spread on to the surface layer of soil, and plough under in soil, wherein the soil conditioning
Agent includes hydroxyl rock phosphate in powder, red mud, pyroligneous acid, lime, steel slag, adsorbent, charcoal, calcium dihydrogen phosphate and ferric sulfate；
(3) soil place is backfilled, then carried out an acceptance inspection to the soil place, the soil place repaired.
2. heavy-metal contaminated soil restorative procedure according to claim 1, which is characterized in that sampled described in step (1)
When sampling depth be to ensure that at least one soil sampling of heterogeneity soil layer.
3. heavy-metal contaminated soil restorative procedure according to claim 1, which is characterized in that by random in step (1)
Method, judgement layout method, subregion of method, system of layouting of layouting layout one or more of method in conjunction with to the contaminated soil place
What soil was sampled.
4. heavy-metal contaminated soil restorative procedure according to claim 1, which is characterized in that described in being determined in step (2)
The boundary that the range dug clearly reaches pollution range is sampled and detects with hole bottom by the side wall on pollution range boundary
It obtains.
5. heavy-metal contaminated soil restorative procedure according to claim 1, which is characterized in that soil described in step (2)
The content of conditioner each component are as follows: in parts by weight, 20-25 parts of hydroxyl rock phosphate in powder, 10-13 parts of red mud, 2-5 parts of pyroligneous acid, stone
20-25 parts grey, 5-8 parts of steel slag, 2-4 parts of adsorbent, 16-20 parts of charcoal, 12-15 parts of calcium dihydrogen phosphate, 1-3 parts of ferric sulfate.
6. heavy-metal contaminated soil restorative procedure according to claim 1, which is characterized in that adsorbed described in step (2)
Agent is the mixing of one or both of montmorillonite, zeolite.
7. heavy-metal contaminated soil restorative procedure according to claim 1, which is characterized in that step further includes testing in (3)
The later period is managed after receipts, and final-period management is once monitored every 1-2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910659705.7A CN110340137A (en) | 2019-07-22 | 2019-07-22 | A kind of heavy-metal contaminated soil restorative procedure |
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| CN201910659705.7A CN110340137A (en) | 2019-07-22 | 2019-07-22 | A kind of heavy-metal contaminated soil restorative procedure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110885690A (en) * | 2019-12-12 | 2020-03-17 | 河南省科学院生物研究所有限责任公司 | Stabilizer for in-situ remediation of soil heavy metal pollution and application thereof |
| CN111360051A (en) * | 2020-04-10 | 2020-07-03 | 福建联拓环境治理有限公司 | Remediation method for heavy metal pollution of soil |
| CN112974497A (en) * | 2021-03-29 | 2021-06-18 | 河南鸣皋智能科技有限公司 | Agricultural heavy metal pollution farmland soil repair system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110885690A (en) * | 2019-12-12 | 2020-03-17 | 河南省科学院生物研究所有限责任公司 | Stabilizer for in-situ remediation of soil heavy metal pollution and application thereof |
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| CN112974497A (en) * | 2021-03-29 | 2021-06-18 | 河南鸣皋智能科技有限公司 | Agricultural heavy metal pollution farmland soil repair system |
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Application publication date: 20191018 |