CN102350437A - Method for carrying out stabilization obstruction on soil with slight heavy metal pollution - Google Patents
Method for carrying out stabilization obstruction on soil with slight heavy metal pollution Download PDFInfo
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- CN102350437A CN102350437A CN201110197685XA CN201110197685A CN102350437A CN 102350437 A CN102350437 A CN 102350437A CN 201110197685X A CN201110197685X A CN 201110197685XA CN 201110197685 A CN201110197685 A CN 201110197685A CN 102350437 A CN102350437 A CN 102350437A
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Abstract
The invention provides a method for carrying out a stabilization obstruction on soil with slight heavy metal pollution, and aims to solve a problem of no feasible treatment method for heavy metal slightly polluted soil characterized by large area and huge cubic meter of earth. Main points of the invention lay in that a medicament layer, a non-woven fabric layer, a filling layer and a cover layer are successively laid on the soil with slight heavy metal pollution; the filling layer contains one or all of an organic filling material and an inorganic filling material; the cover layer refers to non-woven fabric or polyethylene membrane. The present invention has beneficial effects that because of convenient and low cost construction, the method is suitable for heavy metal slightly polluted soil characterized by large area and huge cubic meter of earth.
Description
Technical field
The present invention relates to a kind of method that the soil to slight heavy metal pollution is administered.The soil of said slight heavy metal pollution; Be meant that its content of beary metal arrives ultra B grade standard value below one times in " exhibition land used soil environment quality assessment standard (provisional) " (HJ 350-2007) A grade standard value, and heavy metal leaching concentration is lower than " integrated wastewater discharge standard " threshold value.Refer to the stabilisation blocking method on the said improvement method.
Background technology
It is outstanding that present China leaves over environmental problem in the industrial pollution place, and wherein the place heavy metal pollution of soil accounts for very big proportion.Domestic heavy-metal contaminated soil improvement technology is applied to large tracts of land, it is also few typically to administer case history.The improvement choice of technology in heavy metal pollution place is directly related with the validity of regulation effect, security, engineering exploitativeness and economy.The general contaminated soil that is directed against is classified, and selects corresponding improvement recovery technique again for use.Present domestic heavy metal pollution place is administered with recovery technique and is mainly comprised original position improvement technology and dystopy improvement technology.Original position is administered technology can be divided into in-situ control technology and in-situ treatment technology.Dystopy is administered technical point and is excavated and the dystopy disposal technology.Dystopy is administered and to be meant that contaminated soil is excavated temporary transient or forever leaves original position and administer, dystopy dispose can be on contaminated site or the strange land carry out.
For the soil of severe heavy metal pollution, particularly leach the contaminated soil that concentration surpasses " hazardous waste judging standard-leachings toxicity discriminating " (GB 5085.3-2007) index of correlation value and should dig clearly and the dystopy landfill with reference to hazardous waste.
The soil of moderate heavy metal pollution, its leaching concentration are lower than " hazardous waste judging standard-leaching toxicity is differentiated " index of correlation value but are higher than " integrated wastewater discharge standard " (GB8978-1996) middle relevant numerical.This type heavy-metal contaminated soil can be used technology such as strange land curing or chemical leaching and handle.
The soil of slight heavy metal pollution; Its content of beary metal arrives ultra B grade standard value below one times in " exhibition land used soil environment quality assessment standard (provisional) " (HJ 350-2007) A grade standard value, and heavy metal leaching concentration is lower than " integrated wastewater discharge standard " threshold value.Such pollution has characteristics such as area is big, the earthwork is many, is difficult to use above-mentioned prior art and carries out treatment and disposal.And it is significant to solve this type pollution, economic benefit and obvious social benefit.
Summary of the invention
To the soil of slight heavy metal pollution, the present invention provides a kind of soil to slight heavy metal pollution to implement the method that stabilisation intercepts, and pollution factor is carried out stabilisation intercept.
The objective of the invention is to realize like this: on the soil of slight heavy metal pollution, lay medicament layer, nonwoven layer, packing layer, cover layer successively; Said packing layer be meant in organic filler and the inorganic filler any or all, said cover layer is nonwoven or polyethylene film.
According to the pollution factor migrate attribute, medicament layer has absorption and static stabilization, and promptly the stabilisation composition in the medicament can react with the downward diffusion and the heavy metal pollution factor of precipitation, and the pollution factor form is changed, and migrate attribute receives obvious inhibition; Absorption composition in the medicament can adsorb the upwards pollution factor of migration, and its absorption period of saturation can reach more than decades.
Nonwoven protection medicament layer does not mix upper layer of material, and when rainy, makes rainwater infiltration and do not accumulate.
Organic filler, inorganic filler can be cut off pollution factor fully with the moisture capillary migration that makes progress, and block its migrating channels, guarantee that the face of land or planting soil are not contaminated.
If the place after the improvement is used for plantation, then cover layer is selected nonwoven, on nonwoven, lays planting soil; If the place after the improvement is used for square, road etc., then cover layer is selected polyethylene film, on polyethylene film, lays the basal layer of square or road, like cement layer or stone layer etc.
Compared with prior art, the invention has the beneficial effects as follows: it not only can effectively administer the lighter soil of heavy metal pollution, and is also convenient and with low cost because of constructing, and is fit to administer the lighter soil of heavy metal pollution that area is big, mostly the earthwork is characteristics.
Description of drawings
Further specify the present invention below in conjunction with accompanying drawing.
Fig. 1 is a sketch map of the present invention.
The specific embodiment
1, the place of using the present invention the to administer embodiment that is used to plant
On the soil of slight heavy metal pollution, lay medicament (this medicament is the pulvis of agent of base chemical stabilization and mineral matter sorbing material mixed preparing) layer, nonwoven layer, packing layer, nonwoven, thickness planting soil successively greater than 600mm.
Said packing layer be meant particle diameter be the organic filler of 5 ~ 10mm and in the inorganic filler any or all, according to local annual precipitation and evaporation capacity, the thickness of packing layer is selected between 50 ~ 100mm.The thickness of said medicament layer is 6-10mm, and the seam crossing of nonwoven has at least 200mm to overlap.
2, the place of using the present invention to administer is used for the embodiment of square or road
On the soil of slight heavy metal pollution, lay the basal layer of medicament (this medicament is the pulvis of agent of base chemical stabilization and mineral matter sorbing material mixed preparing) layer, nonwoven layer, packing layer, polyethylene film, square or road successively.All the other are identical with embodiment 1.
Claims (2)
1. the soil to slight heavy metal pollution is implemented the method that stabilisation intercepts, and it is characterized in that: on the soil of slight heavy metal pollution, lay medicament layer, nonwoven layer, packing layer, cover layer successively; Said packing layer be meant in organic filler and the inorganic filler any or all, said cover layer is nonwoven or polyethylene film.
2. implement the method that stabilisation intercepts according to the described soil to slight heavy metal pollution of claim 1, it is characterized in that: said medicament layer is to lay layer by the pulvis of agent of base chemical stabilization and mineral matter sorbing material mixed preparing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110197685A CN102350437B (en) | 2011-07-15 | 2011-07-15 | Method for carrying out stabilization obstruction on soil with slight heavy metal pollution |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110197685A CN102350437B (en) | 2011-07-15 | 2011-07-15 | Method for carrying out stabilization obstruction on soil with slight heavy metal pollution |
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| CN102350437A true CN102350437A (en) | 2012-02-15 |
| CN102350437B CN102350437B (en) | 2012-09-05 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316903A (en) * | 2013-03-21 | 2013-09-25 | 珠海市中科信息技术开发有限公司 | Method for repairing heavy metal polluted soil by chemical combined leaching |
| CN103537481A (en) * | 2013-10-30 | 2014-01-29 | 江苏上田环境修复有限公司 | Preparation method of curing isolation impervious body for organic pollutants |
| CN106670229A (en) * | 2017-03-03 | 2017-05-17 | 湖南艾布鲁环保科技有限公司 | Ecological restoration method of tailings reservoir |
| CN107876560A (en) * | 2017-11-13 | 2018-04-06 | 江苏省农业科学院 | The barrier governing system in situ and method of contaminated soil and underground water |
| CN108057714A (en) * | 2018-01-22 | 2018-05-22 | 湖南力永环保科技股份有限公司 | A kind of capillary evaporation film for soil remediation |
| CN109877146A (en) * | 2019-03-11 | 2019-06-14 | 深圳市铁汉生态环境股份有限公司 | A kind of As polluted soil repairs structure and restorative procedure |
| CN110374132A (en) * | 2019-05-24 | 2019-10-25 | 中节能大地环境修复有限公司 | A kind of cinder field or the Ecosystem restoration system and construction method of tailings stack antiseepage barrier |
| CN114918241A (en) * | 2022-04-28 | 2022-08-19 | 中国科学院沈阳应用生态研究所 | In-situ physical-chemical synergistic blocking method for composite contaminated soil |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316903A (en) * | 2013-03-21 | 2013-09-25 | 珠海市中科信息技术开发有限公司 | Method for repairing heavy metal polluted soil by chemical combined leaching |
| CN103316903B (en) * | 2013-03-21 | 2016-04-06 | 珠海市中科信息技术开发有限公司 | The chemical combined leaching repairing method of a kind of heavy-metal contaminated soil |
| CN103537481A (en) * | 2013-10-30 | 2014-01-29 | 江苏上田环境修复有限公司 | Preparation method of curing isolation impervious body for organic pollutants |
| CN106670229A (en) * | 2017-03-03 | 2017-05-17 | 湖南艾布鲁环保科技有限公司 | Ecological restoration method of tailings reservoir |
| CN106670229B (en) * | 2017-03-03 | 2019-08-13 | 湖南艾布鲁环保科技有限公司 | A kind of ecological recovery method of Tailings Dam |
| CN107876560A (en) * | 2017-11-13 | 2018-04-06 | 江苏省农业科学院 | The barrier governing system in situ and method of contaminated soil and underground water |
| CN108057714A (en) * | 2018-01-22 | 2018-05-22 | 湖南力永环保科技股份有限公司 | A kind of capillary evaporation film for soil remediation |
| CN108057714B (en) * | 2018-01-22 | 2024-04-12 | 湖南力永环保科技股份有限公司 | Capillary evaporation film for soil treatment |
| CN109877146A (en) * | 2019-03-11 | 2019-06-14 | 深圳市铁汉生态环境股份有限公司 | A kind of As polluted soil repairs structure and restorative procedure |
| CN110374132A (en) * | 2019-05-24 | 2019-10-25 | 中节能大地环境修复有限公司 | A kind of cinder field or the Ecosystem restoration system and construction method of tailings stack antiseepage barrier |
| CN114918241A (en) * | 2022-04-28 | 2022-08-19 | 中国科学院沈阳应用生态研究所 | In-situ physical-chemical synergistic blocking method for composite contaminated soil |
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| CN102350437B (en) | 2012-09-05 |
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