CN1810397A - Technology of repairing chromium contaminated soil - Google Patents
Technology of repairing chromium contaminated soil Download PDFInfo
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- CN1810397A CN1810397A CN 200610013190 CN200610013190A CN1810397A CN 1810397 A CN1810397 A CN 1810397A CN 200610013190 CN200610013190 CN 200610013190 CN 200610013190 A CN200610013190 A CN 200610013190A CN 1810397 A CN1810397 A CN 1810397A
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- chromium
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- contaminated soil
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Abstract
The present invention is technology of repairing chromium contaminated soil with vegetation and sewage includes: transferring six-valent chromium from contaminated soil to plant or percolating pond, treating chromium containing sewage in the percolating pond by means of relevant technology, and planting lawn, corn and other crop with luxuriant root system to transfer six-valent chromium from contaminated soil to plant through photosynthesis and root absorption to reach the aim of repairing soil. The said process is safe, and has no secondary pollution, obvious environment utility.
Description
Technical field
The invention relates to the soil remediation technology that is subjected to pollution of chromium after removed by pollution of chromium factory building, ground, underground chromium slag and chromium residue, it relates to and is subjected to that Cr VI reclaims in the chromium-polluted soil, prevents technology hexavalent chromium polluted in the chromium-polluted soil.
Background technology
The chromium slag that chromic salts industry and evanohm industry produce causes severe contamination to environment, so some chromic salts industry is forced to stop production.4,000,000 tons of the chromium quantity of slag are stored up by China at present, have 10 enterprises to stop production and close, country was limited to before 2010 its whole improvement, made contaminated factory building, ground, underground chromium slag, chromium residue and high concentration chrome wastewater are administered the contaminated soil in back to be needed to repair, and no longer produces secondary pollution.It is realized innoxious reparation, realize environmental and ecologically, realize that social benefit is a task of the present invention.The present domestic relevant report of not seeing as yet.
Technology contents
The present invention seeks to overcome contaminated factory building, ground, underground chromium slag, after chromium residue removing and high concentration chrome wastewater are administered, be subjected to the deficiency of the soil remediation aspect of pollution of chromium, utilize a kind of technology that reclaims Cr VI reparation in the soil promptly to provide a kind of simple in structure, easy to implement, prevent the recovery technique of the resource reutilization of chromium-polluted soil contaminated environment.
The present invention gives vegetation to absorb in (plants such as trees, lawn) soil osmosis capillaceous and high concentration chrome wastewater purification techniques in the Cr VI soil, with the Cr VI in the contaminated soil in soil under the effect capillaceous, effect of interpenetrating of underground water capillary or precipitation effect are melted the Cr VI that naturally and are moved in the plant or flow out in the water of continuous filter, purify through the enforcement that continuous filter Zhong Shui is gone round and begun again and to dispose, Cr VI is reached be achieved reparation in the security value (s).
Indication recovery technique principle of the present invention, the one, by capillarity in the soil high concentration chrome wastewater is placed and be lower than in the underground water continuous filter of water level, 3～5 meters of Chi Shen on the underground water plane, high concentration chrome wastewater in high concentration chrome wastewater treatment technology device goes round and begins again clarifier-tank, the 2nd, on chromium-polluted soil, plant trees, the lawn that root system is dense, seeding corn and other crops, absorb water function through photosynthesis and its rhizome, Cr VI is moved in the plant, reach the purpose that chromium-polluted soil is repaired.The present invention is a safe non-secondary pollution, economic benefit, social benefit, the tangible technology of environmental benefit.
Description of drawings
Accompanying drawing is structural representation of the present invention (seeing figure)
1, screened well; 2, contain the chromium water conduit; 3, high-pressure hydraulic pump; 4, contain the chromium water purification installation; 5, contain the chromium concentrating recovery device; 6, purify the cistern groove; 7, high concentration chrome wastewater pond; 8, trees, lawn or other plant.
Claims (4)
1, a kind of technology of repairing chromium contaminated soil is characterized in that: described technology of repairing chromium contaminated soil.
2, according to claims 1, described plant is absorbed in the soil Cr VI and moves in the plant, and capillary percolation effect in the soil flows out in the continuous filter high concentration chrome wastewater.
3, according to claims 2, the described continuous filter high concentration chrome wastewater purifier technology that flows out to.
4, according to claims 3, the described recyclable utilization of purifying waste water contains the chromium concentrate and reclaims resource.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610013190 CN1810397A (en) | 2006-02-21 | 2006-02-21 | Technology of repairing chromium contaminated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610013190 CN1810397A (en) | 2006-02-21 | 2006-02-21 | Technology of repairing chromium contaminated soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1810397A true CN1810397A (en) | 2006-08-02 |
Family
ID=36843593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610013190 Pending CN1810397A (en) | 2006-02-21 | 2006-02-21 | Technology of repairing chromium contaminated soil |
Country Status (1)
| Country | Link |
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| CN (1) | CN1810397A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101889514A (en) * | 2010-07-14 | 2010-11-24 | 四川农业大学 | Method for reducing absorptive amount of heavy metal chromium in soil by crop |
| CN102189099A (en) * | 2011-03-15 | 2011-09-21 | 上海交通大学 | Chromium-barium combined pollution soil treating method based on Na2SO3 |
| CN102228901A (en) * | 2010-06-11 | 2011-11-02 | 中国地质大学（北京） | Treatment method of chromium-polluted soil |
| CN103878171A (en) * | 2014-03-27 | 2014-06-25 | 常州大学 | Ecological treatment bed of chromium contaminated soil |
| CN104438299A (en) * | 2013-09-23 | 2015-03-25 | 天津绿茵景观生态建设股份有限公司 | Comprehensive apparatus for polluted-soil restoration and vegetation recovery |
-
2006
- 2006-02-21 CN CN 200610013190 patent/CN1810397A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102228901A (en) * | 2010-06-11 | 2011-11-02 | 中国地质大学（北京） | Treatment method of chromium-polluted soil |
| CN101889514A (en) * | 2010-07-14 | 2010-11-24 | 四川农业大学 | Method for reducing absorptive amount of heavy metal chromium in soil by crop |
| CN101889514B (en) * | 2010-07-14 | 2012-08-29 | 四川农业大学 | Method for reducing absorptive amount of heavy metal chromium in soil by crop |
| CN102189099A (en) * | 2011-03-15 | 2011-09-21 | 上海交通大学 | Chromium-barium combined pollution soil treating method based on Na2SO3 |
| CN102189099B (en) * | 2011-03-15 | 2012-08-22 | 上海交通大学 | Chromium-barium combined pollution soil treating method based on Na2SO3 |
| CN104438299A (en) * | 2013-09-23 | 2015-03-25 | 天津绿茵景观生态建设股份有限公司 | Comprehensive apparatus for polluted-soil restoration and vegetation recovery |
| CN103878171A (en) * | 2014-03-27 | 2014-06-25 | 常州大学 | Ecological treatment bed of chromium contaminated soil |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |