CN104492801A - Repair method of petroleum-contaminated soil - Google Patents
Repair method of petroleum-contaminated soil Download PDFInfo
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- CN104492801A CN104492801A CN201410745575.6A CN201410745575A CN104492801A CN 104492801 A CN104492801 A CN 104492801A CN 201410745575 A CN201410745575 A CN 201410745575A CN 104492801 A CN104492801 A CN 104492801A
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Abstract
The invention belongs to the field of soil repair, and relates to a repair method of petroleum-contaminated soil. The repair method comprises the following steps: (1) carrying out ex-situ repair on the petroleum-contaminated soil to be repaired, adding the petroleum-contaminated soil in a mixing tank, adding 7 times weight of water in the mixing tank at a room temperature, heating the mixing tank, and stirring; (2) adding octaphenyl polyoxyethyiene, dimethylododecylamine oxide and aluminium phosphate, and then further stirring for mixing; (3) after stirring, adding betaine and calcium boride in the petroleum-contaminated soil, and further stirring in case of keeping the temperature of the mixing tank invariable; (4) further stirring, and carrying out microwave radiation on the petroleum-contaminated soil in the mixing tank; (5) stopping the microwave radiation, removing upper-layer petroleum and water, and separating lower-layer repaired soil from water.
Description
Technical field
The invention belongs to soil remediation field, relate to a kind of restorative procedure of oil-polluted soils, particularly a kind of high efficiency, repair the restorative procedure of fireballing oil-polluted soils.
Background technology
The pollution caused by the catabolite of crude oil, the elementary processed goods of oil (gasoline, kerosene, diesel oil, heavy oil, lubrication wet goods) and all kinds of oil is made a general reference in oil pollution.The pollution of oil to soil mainly concentrates on topsoil, main manifestations is soil texture for a change, affects the change of soil microbial community, hinders the plant growth that soil is planted even to be passed in advanced bio body with food chain, affect the normal function of relevant organ in body, even cause canceration.The recovery technique of oil-polluted soils roughly can be divided into 3 classes, i.e. physical method, chemical method, biological method.Extraction utilizes organic solvent to extract the petroleum substance in soil, is then separated the material in organic phase, reclaims petroleum substance, and this method is suitable for the little and situation that oil pollution concentration is high of area.Electro reclamation have artificial less, the advantage such as few, the high financial profit of contact poison harmful substances, the ecological environment that do not destory the scene, be more suitable for administering the low compact substance soil of infiltration coefficient.
Summary of the invention
the technical problem solved:in the restorative procedure of oil-polluted soils, electro reclamation is the most common, but electro reclamation relative to chemistry and peripheral doses energy consumption large, and repair time is long, the object of the present invention is to provide the restorative procedure of the oil-polluted soils that a kind of efficiency is high, repair time is short.
technical scheme:the invention discloses a kind of restorative procedure of oil-polluted soils, the restorative procedure of described oil-polluted soils comprises the steps:
(1) oil-polluted soils to be repaired is carried out showering, get oil-polluted soils, be added in blending tank, add the water of 7 times of weight under room temperature in blending tank, heating blending tank, heating tank temperature, to 50-60 DEG C, stirs 30min;
(2) in blending tank, OPEO, DDAO and aluminum phosphate is added, OPEO is the 0.5wt%-2wt% of oil-polluted soils weight, DDAO is oil-polluted soils weight 1wt%-2.5wt%, aluminum phosphate is the 0.3wt%-0.8wt% of oil-polluted soils weight, then proceeds to be uniformly mixed 50min;
(3) after stirring, betaine and calcium boride is added again in oil-polluted soils, betaine addition is the 0.8wt%-1.5wt% of oil-polluted soils weight, and calcium boride addition is the 1.1wt%-1.7wt% of oil-polluted soils weight, keeps temperature-resistant continuation to stir 30min to blending tank;
(4) continue to stir, carry out microwave to oil-polluted soils in blending tank, microwave power is 500-700w, microwave time 60min;
(5) stop microwave, remove upper strata oil and water, after lower floor being repaired, soil is separated with water.
Preferably, the restorative procedure of described a kind of oil-polluted soils, in restorative procedure, microwave irradiation power is 550-650w.
Preferably, the restorative procedure of described a kind of oil-polluted soils, the aluminum phosphate added in restorative procedure and calcium boride are Powdered.
Preferably, the restorative procedure of described a kind of oil-polluted soils, in restorative procedure, OPEO is the 1wt% of oil-polluted soils weight.
Preferably, the restorative procedure of described a kind of oil-polluted soils, in restorative procedure, DDAO is the 2wt% of oil-polluted soils weight.
Preferably, the restorative procedure of described a kind of oil-polluted soils, in restorative procedure, betaine addition is the 1.2wt% of oil-polluted soils weight, and calcium boride addition is the 1.4wt% of oil-polluted soils weight.
Preferably, the restorative procedure of described a kind of oil-polluted soils, described oil-polluted soils PetroChina Company Limited. content is 1mg/Kg-1000mg/Kg.
beneficial effect:the restorative procedure of oil-polluted soils of the present invention is compared with the electric repair method of routine, have that repairing effect is good, remediation efficiency is high, the advantage that repair time is short, oil-polluted soils of the present invention is on the basis of the surfactant of routine, new means oil-polluted soils reparation to good result are found, effectively raise the efficiency of remedying oil-polluted soils, there is very good application prospect.
Detailed description of the invention
Embodiment 1
(1) oil-polluted soils to be repaired is carried out showering, get oil-polluted soils, be added in blending tank, add the water of 7 times of weight under room temperature in blending tank, heating blending tank, heating tank temperature to 60 DEG C, stirs 30min; (2) in blending tank, OPEO, DDAO and aluminum phosphate is added, OPEO is the 2wt% of oil-polluted soils weight, DDAO is oil-polluted soils weight 2.5wt%, aluminum phosphate is the 0.3wt% of oil-polluted soils weight, then proceeds to be uniformly mixed 50min; (3) after stirring, betaine and calcium boride is added again in oil-polluted soils, betaine addition is the 1.5wt% of oil-polluted soils weight, and calcium boride addition is the 1.1wt% of oil-polluted soils weight, keeps temperature-resistant continuation to stir 30min to blending tank; (4) continue to stir, carry out microwave to oil-polluted soils in blending tank, microwave power is 700w, microwave time 60min; (5) stop microwave, remove upper strata oil and water, after lower floor being repaired, soil is separated with water.
Embodiment 2
(1) oil-polluted soils to be repaired is carried out showering, get oil-polluted soils, be added in blending tank, add the water of 7 times of weight under room temperature in blending tank, heating blending tank, heating tank temperature to 50 DEG C, stirs 30min; (2) in blending tank, OPEO, DDAO and aluminum phosphate is added, OPEO is the 0.5wt% of oil-polluted soils weight, DDAO is oil-polluted soils weight 1wt%, aluminum phosphate is the 0.8wt% of oil-polluted soils weight, then proceeds to be uniformly mixed 50min; (3) after stirring, betaine and calcium boride is added again in oil-polluted soils, betaine addition is the 0.8wt% of oil-polluted soils weight, and calcium boride addition is the 1.7wt% of oil-polluted soils weight, keeps temperature-resistant continuation to stir 30min to blending tank; (4) continue to stir, carry out microwave to oil-polluted soils in blending tank, microwave power is 500w, microwave time 60min; (5) stop microwave, remove upper strata oil and water, after lower floor being repaired, soil is separated with water.
Embodiment 3
(1) oil-polluted soils to be repaired is carried out showering, get oil-polluted soils, be added in blending tank, add the water of 7 times of weight under room temperature in blending tank, heating blending tank, heating tank temperature to 60 DEG C, stirs 30min; (2) in blending tank, OPEO, DDAO and aluminum phosphate is added, OPEO is the 0.8wt% of oil-polluted soils weight, DDAO is oil-polluted soils weight 1.3wt%, aluminum phosphate is the 0.4wt% of oil-polluted soils weight, then proceeds to be uniformly mixed 50min; (3) after stirring, betaine and calcium boride is added again in oil-polluted soils, betaine addition is the 1wt% of oil-polluted soils weight, and calcium boride addition is the 1.6wt% of oil-polluted soils weight, keeps temperature-resistant continuation to stir 30min to blending tank; (4) continue to stir, carry out microwave to oil-polluted soils in blending tank, microwave power is 550w, microwave time 60min; (5) stop microwave, remove upper strata oil and water, after lower floor being repaired, soil is separated with water.
Embodiment 4
(1) oil-polluted soils to be repaired is carried out showering, get oil-polluted soils, be added in blending tank, add the water of 7 times of weight under room temperature in blending tank, heating blending tank, heating tank temperature to 50 DEG C, stirs 30min; (2) in blending tank, OPEO, DDAO and aluminum phosphate is added, OPEO is the 1.8wt% of oil-polluted soils weight, DDAO is oil-polluted soils weight 2.2wt%, aluminum phosphate is the 0.7wt% of oil-polluted soils weight, then proceeds to be uniformly mixed 50min; (3) after stirring, betaine and calcium boride is added again in oil-polluted soils, betaine addition is the 1.4wt% of oil-polluted soils weight, and calcium boride addition is the 1.3wt% of oil-polluted soils weight, keeps temperature-resistant continuation to stir 30min to blending tank; (4) continue to stir, carry out microwave to oil-polluted soils in blending tank, microwave power is 650w, microwave time 60min; (5) stop microwave, remove upper strata oil and water, after lower floor being repaired, soil is separated with water.
Embodiment 5
(1) oil-polluted soils to be repaired is carried out showering, get oil-polluted soils, be added in blending tank, add the water of 7 times of weight under room temperature in blending tank, heating blending tank, heating tank temperature to 55 DEG C, stirs 30min; (2) in blending tank, OPEO, DDAO and aluminum phosphate is added, OPEO is the 1wt% of oil-polluted soils weight, DDAO is oil-polluted soils weight 2wt%, aluminum phosphate is the 0.6wt% of oil-polluted soils weight, then proceeds to be uniformly mixed 50min; (3) after stirring, betaine and calcium boride is added again in oil-polluted soils, betaine addition is the 1.2wt% of oil-polluted soils weight, and calcium boride addition is the 1.4wt% of oil-polluted soils weight, keeps temperature-resistant continuation to stir 30min to blending tank; (4) continue to stir, carry out microwave to oil-polluted soils in blending tank, microwave power is 600w, microwave time 60min; (5) stop microwave, remove upper strata oil and water, after lower floor being repaired, soil is separated with water.
Comparative example 1
(1) oil-polluted soils to be repaired is carried out showering, get oil-polluted soils, be added in blending tank, add the water of 7 times of weight under room temperature in blending tank, heating blending tank, heating tank temperature to 60 DEG C, stirs 30min; (2) in blending tank, OPEO, DDAO and aluminum phosphate is added, OPEO is the 2wt% of oil-polluted soils weight, DDAO is oil-polluted soils weight 2.5wt%, aluminum phosphate is the 0.3wt% of oil-polluted soils weight, then proceeds to be uniformly mixed 50min; (3) continue to stir, carry out microwave to oil-polluted soils in blending tank, microwave power is 700w, microwave time 60min; (4) stop microwave, remove upper strata oil and water, after lower floor being repaired, soil is separated with water.
Before oil-polluted soils reparation, soil PetroChina Company Limited. content is 132.5mg/Kg, and under keeping phase humidity condition after repairing, test the content of soil PetroChina Company Limited. after repairing, result is as following table:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | |
| Oil content (mg/Kg) | 34.8 | 37.2 | 20.1 | 17.7 | 7.5 | 67.9 |
After garden beet alkali and calcium boride are repaired soil again, its remediation efficiency improves greatly, therefore oil-polluted soils restorative procedure of the present invention has possessed the advantage that repairing effect is good, efficiency is high, the time is short, can be used as the reparation of novel restorative procedure for oil pollution near oil fields soil.
Claims (7)
1. a restorative procedure for oil-polluted soils, is characterized in that the restorative procedure of described oil-polluted soils comprises the steps:
(1) oil-polluted soils to be repaired is carried out showering, get oil-polluted soils, be added in blending tank, add the water of 7 times of weight under room temperature in blending tank, heating blending tank, heating tank temperature, to 50-60 DEG C, stirs 30min;
(2) in blending tank, OPEO, DDAO and aluminum phosphate is added, OPEO is the 0.5wt%-2wt% of oil-polluted soils weight, DDAO is oil-polluted soils weight 1wt%-2.5wt%, aluminum phosphate is the 0.3wt%-0.8wt% of oil-polluted soils weight, then proceeds to be uniformly mixed 50min;
(3) after stirring, betaine and calcium boride is added again in oil-polluted soils, betaine addition is the 0.8wt%-1.5wt% of oil-polluted soils weight, and calcium boride addition is the 1.1wt%-1.7wt% of oil-polluted soils weight, keeps temperature-resistant continuation to stir 30min to blending tank;
(4) continue to stir, carry out microwave to oil-polluted soils in blending tank, microwave power is 500-700w, microwave time 60min;
(5) stop microwave, remove upper strata oil and water, after lower floor being repaired, soil is separated with water.
2. the restorative procedure of a kind of oil-polluted soils according to claim 1, is characterized in that in the restorative procedure of described oil-polluted soils, microwave irradiation power is 550-650w.
3. the restorative procedure of a kind of oil-polluted soils according to claim 1, is characterized in that the aluminum phosphate that adds in the restorative procedure of described oil-polluted soils and calcium boride are Powdered.
4. the restorative procedure of a kind of oil-polluted soils according to claim 1, is characterized in that in the restorative procedure of described oil-polluted soils, OPEO is the 1wt% of oil-polluted soils weight.
5. the restorative procedure of a kind of oil-polluted soils according to claim 1, is characterized in that in the restorative procedure of described oil-polluted soils, DDAO is the 2wt% of oil-polluted soils weight.
6. the restorative procedure of a kind of oil-polluted soils according to claim 1, it is characterized in that in the restorative procedure of described oil-polluted soils, betaine addition is the 1.2wt% of oil-polluted soils weight, calcium boride addition is the 1.4wt% of oil-polluted soils weight.
7. the restorative procedure of a kind of oil-polluted soils according to claim 1, is characterized in that described oil-polluted soils PetroChina Company Limited. content is 1mg/Kg-1000mg/Kg.
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| CN201410745575.6A CN104492801B (en) | 2014-12-09 | 2014-12-09 | A kind of restorative procedure of oil-polluted soils |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105414161A (en) * | 2015-12-23 | 2016-03-23 | 江苏盖亚环境工程有限公司 | Remediation method for soil in petroleum-polluted saline and alkali land |
| CN105689381A (en) * | 2016-01-22 | 2016-06-22 | 中国科学院上海高等研究院 | Quick remediation and petroleum product recycling method and device for petroleum-contaminated soil through microwaves |
| CN108064191A (en) * | 2015-09-05 | 2018-05-22 | 特尔姆（鼎科）环境公司 | Use improvement activator repairing polluted soil and water |
| US11292038B2 (en) | 2020-05-09 | 2022-04-05 | China University Of Petroleum | Combined treatment method of petroleum-contaminated soil |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108064191A (en) * | 2015-09-05 | 2018-05-22 | 特尔姆（鼎科）环境公司 | Use improvement activator repairing polluted soil and water |
| CN108064191B (en) * | 2015-09-05 | 2021-07-27 | 特尔姆（鼎科）环境公司 | Remediation of contaminated soil and water using improved activators |
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| US11292038B2 (en) | 2020-05-09 | 2022-04-05 | China University Of Petroleum | Combined treatment method of petroleum-contaminated soil |
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| CN104492801B (en) | 2016-08-17 |
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Address after: 215000 Jiangsu city of Suzhou province Dushu Lake Industrial Park of the Graduate School of Nanjing University A505 room Patentee after: JIANGSU GAIYA ENVIRONMENTAL SCIENCE AND TECHNOLOGY CO., LTD. Address before: 215000 Jiangsu city of Suzhou province Dushu Lake Industrial Park of the Graduate School of Nanjing University A505 room Patentee before: JIANGSU GAIYA ENVIRONMENTAL ENGINEERING CO., LTD. |