CN102886379A - Method for biologically and intensively repairing petroleum contaminated soil - Google Patents
Method for biologically and intensively repairing petroleum contaminated soil Download PDFInfo
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- CN102886379A CN102886379A CN2012103765843A CN201210376584A CN102886379A CN 102886379 A CN102886379 A CN 102886379A CN 2012103765843 A CN2012103765843 A CN 2012103765843A CN 201210376584 A CN201210376584 A CN 201210376584A CN 102886379 A CN102886379 A CN 102886379A
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Abstract
The invention provides a method for biologically and intensively repairing petroleum contaminated soil, which comprises the following steps of: 1) laying a protective layer on the ground needed to repair, and placing a perforated pipe with a through hole on the protecting layer; 2) mixing the contaminated soil, a biological capsule type soil purifier and an enhanced flora with the weight ratio of (100-200) to (5-10) to (1-5); 3) pushing the uniformly mixed contaminated soil to the perforated pipe, ventilating and overturning the soil at a fixed period, guaranteeing the mixed contaminated soil to be fully contact with the air, and processing for 15 to 30 days; and 4) observing that the soil is fluffy and the color is of dark brown, which shows that the degradation is finished and the vegetation recovery is performed. The method provided by the invention has the following advantages and beneficial effects: the time is short: the equivalent biological repair work is finished within 3 to 6 months; furthermore, the method for biologically and intensively repairing petroleum contaminated soil can be directly used for repairing the heavy oil polluted soil with high concentration and quickly inhibiting an oil membrane and an oil smell; simultaneously, the range of application is wide, so that the method is utilized with low temperature of below 10 DEG C; and no secondary pollution is produced, and the fed biological soil purifier is thoroughly degraded by other indigenous microorganisms.
Description
Technical field
The present invention relates to field of Environment Protection, relate to particularly a kind of restorative procedure of oil-polluted soils.
Background technology
In oil exploration, exploitation, storing, processing and use procedure, various unpredictable factor club causes large-area soil petroleum pollution, such as accidental release of the gas blowout accident in the oil field development, petroleum pipeline and oil tank etc.After petroleum pollution enters soil, understand the spoiled soil structure, affect the permeability of soil.Greasy dirt adheres on the root system of plant, hinders breathing and the absorption of root system of plant, causes that root system rots and crop production reduction.The reactive group that oil is rich in can be combined with inorganic nitrogen, phosphorus and be limited nitrification and dephosphorylation, thereby the content of soil available nitrogen, phosphorus is reduced, and affects the nutrient absorption of crop.That benzene homologues in the oil and polycyclic aromatic hydrocarbon have is carcinogenic, cause the effects such as change, teratogenesis, and can by food chain step by step enrichment in animal and plant body, be difficult in the petroleum hydrocarbon being permeated the ground polluted underground water by the part of adsorption by soil.
Soil pollutes petroleum-type and has certain self-purification capacity, yet exceed the self-purification capacity of surrounding medium when the polluter that enters soil after, will cause accumulation and the pollution of petroleum substance in environment.At present, the method for elimination soil petroleum pollution mainly contains: physical restoration, chemical restoration, biological restoration etc.
Physical restoration comprises heat treating process, isolation method, soil replacement method etc.; Chemical restoration comprises extraction, soil washing method, chemical oxidization method etc.Since physical restoration and chemical restoration all exist cost high, the defective such as secondary pollution is arranged, so in recent years, the geobiont recovery technique causes people's extensive concern gradually.
Summary of the invention
The purpose of this invention is to provide a kind of method of utilizing biological reinforced remedying oil-polluted soils.
For realizing above-mentioned goal of the invention, technical scheme of the present invention is as follows:
A kind of method of utilizing biological reinforced remedying oil-polluted soils is characterized in that: realize by following steps:
1) lays protective layer on the ground that needs are repaired, place the perforated pipe that has through hole at protective layer;
2) mix polluted soil, biological capsule type soil sanitation agent, reinforcement flora, it is 100-200:0.15-1:1-5 that the three adds part by weight;
3) polluted soil behind the mixing is deposited on the perforated pipe, regularly ventilates and stir soil, guarantee itself and fully the contacting of air, processed 15-30 days;
4) observe soil fluffy, the color dark brown shows and degrades completely, carries out revegetation.
The extraction of described biological capsule type soil sanitation agent is divided into Four processes:
1) screening and cultivation have the microorganism fungus kind of strong absorption and degradation capability to petroleum substance;
2) bacterial classification is carried out the mummification dehydration;
3) the oil content material in the extraction bacterial classification;
4) bacterial classification is carried out overlay film, form capsule, make it to possess to the quick absorption of petroleum substance and transfer to intracellular function.
The invention has the beneficial effects as follows:
1) time is short: use biological capsule type soil sanitation agent to need the cycle in 1 year to compare with conventional oil soil pollution biological restoration, can finish equal biological restoration work in the month at 3-6, if be used in conjunction with again the biological reinforced flora of targetedly oil pollution, can shorten to repairing efficiency in 2-3 month;
2) remarkably productive: as can be directly used in and to repair the high density heavy oil contaminated soil, can suppress oil film fast, oil is smelt;
3) wide accommodation: biological capsule type soil sanitation agent can be used under-10 ℃ low temperature in the sump oil adsorption by soil;
4) environment-friendly degradable: do not have secondary pollution, the bion soil sanitation agent that adds can thoroughly be decomposed by other indigenous microorganism.
The specific embodiment
1 one kinds of methods of utilizing biological reinforced remedying oil-polluted soils of embodiment
Realize by following steps:
1) lays protective layer on the ground that needs are repaired, place the perforated pipe that has through hole at protective layer;
2) mix polluted soil 200kg, biological capsule type soil sanitation agent 0.15kg, reinforcement flora 2kg;
3) polluted soil behind the mixing is deposited on the perforated pipe, regularly ventilates and stir soil, guarantee itself and fully the contacting of air, processed 30 days;
4) observe soil fluffy, the color dark brown shows and degrades completely, carries out revegetation.
The extraction of described biological capsule type soil sanitation agent is divided into Four processes:
1) screening and cultivation have the microorganism fungus kind of strong absorption and degradation capability to petroleum substance;
2) bacterial classification is carried out the mummification dehydration;
3) the oil content material in the extraction bacterial classification;
4) bacterial classification is carried out overlay film, form capsule, make it to possess to the quick absorption of petroleum substance and transfer to intracellular function.
Embodiment 2
1) lays protective layer on the ground that needs are repaired, place the perforated pipe that has through hole at protective layer;
2) mix polluted soil 100kg, biological capsule type soil sanitation agent 0.6kg, reinforcement flora 4.4kg;
3) polluted soil behind the mixing is deposited on the perforated pipe, regularly ventilates and stir soil, guarantee itself and fully the contacting of air, processed 30 days;
4) observe soil fluffy, the color dark brown shows and degrades completely, carries out revegetation.
Treatment effect: the clearance of capsule-type soil sanitation agent counterweight oily substance can reach nearly 100%, is higher than other absorption efficiency organic and inorganic absorbent the highest 50% and 20% far away.
| Type | Clearance |
| Capsule-type soil sanitation agent | 100％ |
| Inorganic type | 20％ |
| Organic type | 50％ |
Below principle of the present invention and feature are described, institute only gives an actual example and to be used for explanation the present invention, is not be used to limiting scope of the present invention.
The above is preferred embodiment of the present invention only, is not limited to the present invention, and is within the spirit and principles in the present invention all, and any modification of making and be equal to replacement all should be included within protection scope of the present invention.
Claims (2)
1. method of utilizing biological reinforced remedying oil-polluted soils is characterized in that: realize as follows:
1) lays protective layer on the ground that needs are repaired, place the perforated pipe that has through hole at protective layer;
2) mix polluted soil, biological capsule type soil sanitation agent, reinforcement flora, it is 100-200:0.15-1:1-5 that the three adds part by weight;
3) polluted soil behind the mixing is deposited on the perforated pipe, regularly ventilates and stir soil, guarantee itself and fully the contacting of air, processed 15-30 days;
4) observe soil fluffy, the color dark brown shows and degrades completely, carries out revegetation.
2. a kind of method of utilizing biological reinforced remedying oil-polluted soils according to claim 1, it is characterized in that: the extraction of described biological capsule type soil sanitation agent is divided into Four processes:
1) screening and cultivation have the microorganism fungus kind of strong absorption and degradation capability to petroleum substance;
2) bacterial classification is carried out the mummification dehydration;
3) the oil content material in the extraction bacterial classification;
4) bacterial classification is carried out overlay film, form capsule, make it to possess to the quick absorption of petroleum substance and transfer to intracellular function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012103765843A CN102886379A (en) | 2012-09-28 | 2012-09-28 | Method for biologically and intensively repairing petroleum contaminated soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103765843A CN102886379A (en) | 2012-09-28 | 2012-09-28 | Method for biologically and intensively repairing petroleum contaminated soil |
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| CN102886379A true CN102886379A (en) | 2013-01-23 |
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| CN2012103765843A Pending CN102886379A (en) | 2012-09-28 | 2012-09-28 | Method for biologically and intensively repairing petroleum contaminated soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907331A (en) * | 2015-05-27 | 2015-09-16 | 山东康诚石油化工科技股份有限公司 | Soil biological repair method |
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| CN101050435A (en) * | 2007-03-16 | 2007-10-10 | 山东省科学院生物研究所 | Solid microbe agent for degrading petroleum pollution, and petroleum products, and preparation method |
| CN101063120A (en) * | 2007-04-05 | 2007-10-31 | 大连理工大学 | Gram-negative bacteria microcapsule and preparation method thereof |
| CN101234392A (en) * | 2008-02-29 | 2008-08-06 | 中国海洋大学 | Device and method for biologically repairing high concentration petroleum pollution soil |
| CN102199589A (en) * | 2010-12-27 | 2011-09-28 | 北京师范大学 | Immobilized microspheres for remediation of petroleum contaminated soil, preparation method thereof and application thereof |
| CN102199430A (en) * | 2010-12-27 | 2011-09-28 | 北京师范大学 | Immobilized microsphere for remedying calcium carbonate-containing petroleum polluted soil as well as preparation method and application |
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2012
- 2012-09-28 CN CN2012103765843A patent/CN102886379A/en active Pending
Patent Citations (5)
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| CN101050435A (en) * | 2007-03-16 | 2007-10-10 | 山东省科学院生物研究所 | Solid microbe agent for degrading petroleum pollution, and petroleum products, and preparation method |
| CN101063120A (en) * | 2007-04-05 | 2007-10-31 | 大连理工大学 | Gram-negative bacteria microcapsule and preparation method thereof |
| CN101234392A (en) * | 2008-02-29 | 2008-08-06 | 中国海洋大学 | Device and method for biologically repairing high concentration petroleum pollution soil |
| CN102199589A (en) * | 2010-12-27 | 2011-09-28 | 北京师范大学 | Immobilized microspheres for remediation of petroleum contaminated soil, preparation method thereof and application thereof |
| CN102199430A (en) * | 2010-12-27 | 2011-09-28 | 北京师范大学 | Immobilized microsphere for remedying calcium carbonate-containing petroleum polluted soil as well as preparation method and application |
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| 韩冬冬，于才渊，周禹君: "石油污染土壤生物修复菌剂的微胶囊包被研究", 《干燥技术与设备》 * |
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| CN104907331A (en) * | 2015-05-27 | 2015-09-16 | 山东康诚石油化工科技股份有限公司 | Soil biological repair method |
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Application publication date: 20130123 |