CN112812779A - Coastal petroleum polluted soil remediation agent and application thereof - Google Patents
Coastal petroleum polluted soil remediation agent and application thereof Download PDFInfo
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- CN112812779A CN112812779A CN202011485272.7A CN202011485272A CN112812779A CN 112812779 A CN112812779 A CN 112812779A CN 202011485272 A CN202011485272 A CN 202011485272A CN 112812779 A CN112812779 A CN 112812779A
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- petroleum
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- polluted soil
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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
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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
Abstract
The invention belongs to the technical field of petroleum pollution remediation treatment, and particularly provides a coastal petroleum polluted soil remediation agent which comprises the following components: vermiculite, perlite, plant ash, cement, pine needle soil, vinasse, plant straws, fungi, a humectant and animal waste. The components of the invention are coordinated and matched, and the petroleum-polluted soil can be efficiently repaired. The results of the embodiment show that the repairing agent provided by the invention is particularly suitable for the actual situation of petroleum-polluted soil in coastal mountain environments, can repair the petroleum-polluted soil with high salt, high alkali and high humidity, and can play a repairing role below 37 ℃.
Description
Technical Field
The invention relates to the technical field of petroleum pollution remediation treatment, and particularly relates to a coastal petroleum polluted soil remediation agent and application thereof.
Background
Petroleum is one of the most important energy sources on earth, and is required as an energy source and a raw material in daily production and life. In China today, as the most developing countries in the world and the major oil producing countries, the production conditions and pollution control technologies are relatively lagged behind.
Common techniques for treating petroleum-contaminated soil are physical, chemical and biological methods.
The physical method is a common method for restoring petroleum-polluted soil, and the treatment modes mainly comprise an incineration method, a soil replacement method and an isolation method. Although the physical method can effectively remove the target substance without changing the chemical property of the target substance, the method mostly causes secondary pollution, and the equipment is complex and the early preparation workload is huge because the chemical property of the target substance is not changed, so that the physical method repair cost is directly increased, and the wide popularization of the technology is hindered.
The chemical method is to separate, recover or change the property of the petroleum-related pollutants by using a specific chemical reaction, so that the petroleum-related pollutants become substances without toxic effect on the environment. Although the oil removal effect is good, the operation process is complex, the investment cost is high, and chemical reagents are required to be added, and the added chemical reagents are easy to destroy the normal ecological balance of the soil environment, so that secondary pollution is caused.
The biological method is the most environment-friendly treatment scheme in the soil remediation industry at present, mainly utilizes the biological metabolic behavior to degrade pollutants, artificially enhances the self-cleaning capacity of soil, can remove pollutants, and has a certain recovery effect on the soil quality. However, the existing biological method has too long repair cycle, is difficult to manage, cannot adapt to the needs of actual projects, and also has obstacles in popularization. Moreover, the terrain environment of China is complex, the climate is various, and the number of technologies which can be combined with the actual technology of China is relatively small; in particular, bioremediation for petroleum pollution in special soil environments with low temperature, high salt content, high alkali content and high humidity is lacked.
Disclosure of Invention
In view of the above, the invention provides a coastal petroleum polluted soil remediation agent and application thereof, and the soil remediation agent provided by the invention can be used for bioremediation of petroleum pollution in special soil environments with low temperature, high salt, high alkali and high humidity, and can effectively degrade and fix oil in polluted soil.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a coastal petroleum polluted soil remediation agent, which comprises the following components: vermiculite, perlite, plant ash, cement, pine needle soil, vinasse, plant straws, fungi, a humectant and animal waste.
Preferably, the dosage of each component is respectively as follows by mass parts: 1-5 parts of vermiculite, 10 parts of perlite, 5-15 parts of plant ash, 5-10 parts of cement, 5-12 parts of pine needle soil, 1-5 parts of vinasse, 20-30 parts of plant straw, 5-10 parts of humectant and 10-25 parts of animal manure; the number of viable bacteria of fungi in the coastal petroleum polluted soil repairing agent is more than or equal to 106cfu/g。
Preferably, the humectant is a mixture of hydroxyethyl cellulose, fly ash, polyaspartic acid, methacrylamide and chitosan;
the mass ratio of the mixture of the hydroxyethyl cellulose, the fly ash, the polyaspartic acid, the methacrylamide and the chitosan is (20-30): (0.5-2): (10-12): 20: (20-30);
the grain size of the plant straw is less than or equal to 10 mm; the pH value of the cement is 7-8.
Preferably, the fungus is a compound fungus of Arundinacea spinosa, white rot fungus and Phanerochaete chrysosporium; the number of viable bacteria of the Argentina spinosa, the white rot fungi and the Phanerochaete chrysosporium in the composite fungi is 1:1: 1.
Preferably, the particle size of the plant straw is 1-5 mm; the plant straw is provided in the form of corn straw biochar; the pH value of the cement is 7-8.
The invention also provides application of the coastal petroleum polluted soil remediation agent in the technical scheme in remediation of petroleum polluted soil.
Preferably, the application specifically comprises: directly spraying the coastal petroleum polluted soil remediation agent on the petroleum polluted soil to be remedied; the mass of the soil remediation agent is 3-5% of the mass of the soil.
Preferably, the salt content of the petroleum polluted soil to be repaired is 5.6-6.6 g/kg, and the pH value is 7.5-8; the water content of the petroleum-polluted soil to be repaired is 75-85%.
Preferably, the application is carried out at 37 ℃.
The invention provides a coastal petroleum polluted soil remediation agent, which comprises the following components: vermiculite, perlite, plant ash, cement, pine needle soil, vinasse, plant straws, fungi, a humectant and animal waste. The components of the invention are coordinated and matched, and the petroleum-polluted soil can be efficiently repaired. The results of the embodiment show that the repairing agent provided by the invention is particularly suitable for the actual situation of petroleum-polluted soil in coastal mountain environments, can repair the petroleum-polluted soil with high salt, high alkali and high humidity, and can play a repairing role below 37 ℃.
Detailed Description
The invention provides a coastal petroleum polluted soil remediation agent, which comprises the following components: vermiculite, perlite, plant ash, cement, pine needle soil, vinasse, plant straws, fungi, a humectant and animal waste.
The coastal petroleum polluted soil restoration agent provided by the invention preferably comprises 1-5 parts of vermiculite by mass, and further preferably 1.2-2 parts of vermiculite by mass. In the invention, the vermiculite can effectively improve the structure of soil, store water and preserve soil moisture, improve the air permeability and water content of the soil and change acid soil into neutral soil; also has buffering effect, prevents rapid change of pH value, slowly releases the fertilizer in the crop growth medium, and allows slight excess use of the fertilizer without harm to plants; the vermiculite can also provide K, Mg, Ca and Fe contained in the vermiculite and trace elements such as Mn, Cu, Zn and the like to crops. Moreover, the water absorption, cation exchange property and chemical component characteristics of the vermiculite ensure that the vermiculite has multiple functions of fertilizer retention, water storage, air permeability, mineral fertilizer and the like.
The coastal petroleum polluted soil remediation agent provided by the invention preferably comprises 10 parts of perlite by mass. In the invention, the perlite can effectively regulate soil hardening, prevent crops from lodging and control fertilizer efficiency and fertility.
The coastal petroleum polluted soil remediation agent provided by the invention preferably comprises 5-15 parts of plant ash by mass. In the invention, the plant ash can promote the germination of seeds, improve the soil temperature, keep a loose and ventilated state and promote the seeds to germinate in advance, and the grown seedlings are tidy and strong and have high seedling rate; but also can promote rooting, reduce plant diseases and insect pests and prevent fallen leaves; inhibiting crop diseases and insect pests.
The coastal petroleum polluted soil remediation agent provided by the invention comprises, by mass, preferably 5-10 parts of cement, and further preferably 5-6 parts of cement. In the invention, the pH value of the cement is preferably 7-8.
The coastal petroleum polluted soil remediation agent provided by the invention comprises 5-12 parts of pine needle wood by mass, and is further preferably 6-8 parts. In the invention, the pine needle soil improves the moisturizing effect of the repairing agent and can effectively prevent and treat soil erosion.
The coastal petroleum polluted soil restoration agent provided by the invention preferably comprises 1-5 parts of vinasse by mass. In the invention, the vinasse is high in nutrient content, contains protein, amino acid, fat, inorganic elements and the like, and can be used as a microbial culture medium. Meanwhile, aiming at the saline-alkali environment of the coastal mountainous regions, the vinasse can effectively reduce the pH value of soil, improve the soil fertility and improve the growth vigor of crops.
The coastal petroleum polluted soil restoration agent provided by the invention comprises, by mass, preferably 20-30 parts of plant straws, more preferably 25-30 parts of plant straws, and even more preferably 28-30 parts of plant straws. In the invention, the grain diameter of the plant straw is preferably less than or equal to 10 mm; the plant straw is preferably corn straw biochar; the invention has no special requirement on the source of the corn stalk biochar and can adopt the method which is well known by the technical personnel in the field. In the invention, the addition of the plant straws can improve the microbial biomass in the soil and the activity of microorganisms in the soil, and also improve the enzyme activity in the soil to a certain extent, so that a certain granular structure is formed, and the increase of organic carbon, all carbon, phosphorus and potassium, and quick-acting carbon, phosphorus and potassium in the soil is caused.
The coastal petroleum polluted soil restoration agent provided by the invention preferably comprises 5-10 parts of a humectant by mass, and further preferably 5.5-6.5 parts by mass. In the present invention, the humectant is preferably a mixture of hydroxyethyl cellulose, fly ash, polyaspartic acid, methacrylamide and chitosan; the mass ratio of the mixture of the hydroxyethyl cellulose, the fly ash, the polyaspartic acid, the methacrylamide and the chitosan is preferably (20-30): (0.5-2): (10-12): 20: (20-30), more preferably 20: 0.5: 10: 20: 20. in the invention, the humectant can regulate the soil ecosystem, neutralize the alkaline substances in the soil and strengthen the degradation process of petroleum hydrocarbon in the polluted soil, plays a role in improving the microbial biomass in the soil and the activity of microbial enzymes in the soil, reducing the salinization degree of the soil, and serves as a mineral fertilizer to increase the nutrients such as organic carbon, nitrogen, phosphorus, potassium and the like required by plant growth in the soil. .
The coastal petroleum polluted soil remediation agent provided by the invention preferably comprises 20-25 parts of animal wastes by mass. The invention has no special requirements on the type and source of the animal wastes, and can be prepared by adopting the common animal waste fertilizer in the field of crop planting.
In the invention, the number of viable bacteria of the fungus in the coastal petroleum polluted soil remediation agent is preferably more than or equal to 106cfu/g. In the present invention, the fungus is preferably a complex fungus of Arundinacea spinosa, white rot fungus and Phanerochaete chrysosporium; the number of viable bacteria of the Michelia spinosa, the white rot fungi and the phanerochaete chrysosporium in the composite fungi is preferably 1:1: 1.
The preparation method of the coastal petroleum polluted soil remediation agent has no special requirement, and the preparation method of the composition is well known by the technical personnel in the field.
The invention also provides application of the coastal petroleum polluted soil remediation agent in the technical scheme in remediation of petroleum polluted soil.
In the present invention, the application is preferably specifically: and directly spraying the coastal petroleum polluted soil remediation agent into the petroleum polluted soil to be remedied.
In the invention, the salt content of the petroleum-polluted soil to be repaired is preferably 5.6-6.6 g/kg, and more preferably 6-6.6 g/kg; the pH value of the petroleum-polluted soil to be repaired is preferably 7.5-8, and further preferably 7.8-8; the water content of the petroleum-polluted soil to be repaired is preferably 75-85%. In the invention, the soil remediation can be carried out at the temperature of less than or equal to 37 ℃, further preferably at the temperature of less than or equal to 20 ℃, and further preferably at the temperature of less than or equal to 10 ℃; the coastal petroleum polluted soil restoration agent has excellent cold resistance.
In the invention, the dosage of the soil remediation agent is preferably 3-5% of the mass of the soil to be remediated, and more preferably 3.5-4%.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless otherwise specified, the following amounts are all in parts by mass.
Example 1
Preparing materials: 5 parts of vermiculite, 10 parts of perlite, 5 parts of plant ash, 5 parts of cement, 5 parts of pine needle soil, 5 parts of vinasse, 30 parts of corn straw biochar (the particle size is less than or equal to 10mm), 10 parts of humectant and 25 parts of chicken manure (a mixture of hydroxyethyl cellulose, fly ash, polyaspartic acid, methacrylamide and chitosan mixed in a mass ratio of 20: 0.5: 10: 20: 20).
Mixing the above components, adding composite fungus of Ardisia spinosa, white rot fungus and Phanerochaete chrysosporium to ensure that the activity of mixed repairing agent is 8 × 106cfu/g。
Example 2
Preparing materials: 2 parts of vermiculite, 10 parts of perlite, 6 parts of plant ash, 5 parts of cement, 8 parts of pine needle soil, 2 parts of vinasse, 25 parts of corn straw biochar (the particle size is less than or equal to 10mm), 8 parts of humectant and 20 parts of sheep manure (a mixture of hydroxyethyl cellulose, fly ash, polyaspartic acid, methacrylamide and chitosan mixed in a mass ratio of 20: 0.5: 10: 20: 20).
Mixing the above components, adding composite fungus of Ardisia spinosa, white rot fungus and Phanerochaete chrysosporium to ensure that the mixed repairing agent has a fungus activity of 5 × 106cfu/g。
Application example 1
Taking the petroleum polluted soil to be restored, wherein the salt content is 6.25g/kg, the pH value is 7.8, and the humidity is 78%.
Uniformly mixing the soil remediation agent obtained in the example 1 and the polluted soil to be remedied according to the proportion that the dosage of the remediation agent is 3.5 percent of the mass of the soil to be remedied; during this time, the soil and remediation agent are kept wet. The content of petroleum in the soil is respectively measured at 10 days, 20 days, 1 month, 45 days, 60 days, 75 days and 90 days, and the degradation rate of the petroleum respectively reaches 15%, 20%, 28%, 40%, 55%, 67.8% and 92%.
Application example 2
Taking a soil sample as in the application example, wherein the difference is that the mixed repairing agent obtained in the example 2 is adopted as the soil repairing agent, and the using amount of the repairing agent is 4.0 percent of the mass of the soil sample. After the repairing agent is mixed with the soil, the content of petroleum in the soil is measured at 0 day, 20 days, 1 month, 45 days, 60 days, 75 days and 90 days respectively, and the degradation rate of the petroleum reaches 12.52%, 17%, 25%, 38%, 54%, 66% and 87% respectively.
The examples show that the soil remediation agent provided by the invention can effectively degrade oil in the polluted soil; the method is environment-friendly, low in cost and free of secondary pollution, and has great practical significance for resource recovery and environmental pollution control; is also suitable for large-scale production, has popularization effect and is easy to be applied to garden engineering technology.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A coastal petroleum polluted soil remediation agent comprises the following components: vermiculite, perlite, plant ash, cement, pine needle soil, vinasse, plant straws, fungi, a humectant and animal waste.
2. The coastal petroleum polluted soil remediation agent of claim 1, wherein the dosage of each component is, by mass: 1-5 parts of vermiculite, 10 parts of perlite, 5-15 parts of plant ash, 5-10 parts of cement, 5-12 parts of pine needle soil, 1-5 parts of vinasse, 20-30 parts of plant straw, 5-10 parts of humectant and 10-25 parts of animal manure; the number of viable bacteria of fungi in the coastal petroleum polluted soil repairing agent is more than or equal to 106cfu/g。
3. The coastal petroleum-contaminated soil remediation agent of claim 1, wherein said humectant is a mixture of hydroxyethylcellulose, fly ash, polyaspartic acid, methacrylamide, and chitosan;
the mass ratio of the mixture of the hydroxyethyl cellulose, the fly ash, the polyaspartic acid, the methacrylamide and the chitosan is (20-30): (0.5-2): (10-12): 20: (20-30);
the grain size of the plant straw is less than or equal to 10 mm; the pH value of the cement is 7-8.
4. The coastal petroleum-contaminated soil remediation agent of claim 1, wherein said fungus is a complex fungus of Arundinacea spinosa, white rot fungus, and Phanerochaete chrysosporium; the number of viable bacteria of the Argentina spinosa, the white rot fungi and the Phanerochaete chrysosporium in the composite fungi is 1:1: 1.
5. The coastal petroleum polluted soil remediation agent of claim 1, wherein the plant straw has a particle size of 1-5 mm; the plant straw is provided in the form of corn straw biochar.
6. The use of the coastal petroleum-contaminated soil remediation agent of any one of claims 1 to 5 for remediation of petroleum-contaminated soil.
7. The application according to claim 6, characterized in that it is specifically: directly spraying the coastal petroleum polluted soil remediation agent on the petroleum polluted soil to be remedied; the mass of the soil remediation agent is 3-5% of the mass of the soil.
8. The application of the method as claimed in claim 6 or 7, wherein the salt content of the petroleum-polluted soil to be repaired is 5.6-6.6 g/kg, and the pH value is 7.5-8; the water content of the petroleum-polluted soil to be repaired is 75-85%.
9. Use according to claim 6 or 7, wherein the use is carried out at ≤ 37 ℃.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011485272.7A CN112812779A (en) | 2020-12-16 | 2020-12-16 | Coastal petroleum polluted soil remediation agent and application thereof |
| PCT/CN2020/140852 WO2022126756A1 (en) | 2020-12-16 | 2020-12-29 | Remediation agent for petroleum-contaminated coastal soil and use thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011485272.7A CN112812779A (en) | 2020-12-16 | 2020-12-16 | Coastal petroleum polluted soil remediation agent and application thereof |
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| CN112812779A true CN112812779A (en) | 2021-05-18 |
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| CN202011485272.7A Pending CN112812779A (en) | 2020-12-16 | 2020-12-16 | Coastal petroleum polluted soil remediation agent and application thereof |
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| WO (1) | WO2022126756A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113731372A (en) * | 2021-09-15 | 2021-12-03 | 陕西环保产业研究院有限公司 | Peat adsorbent for treating oil spill contaminated soil and treatment method |
| CN115338239A (en) * | 2022-03-04 | 2022-11-15 | 上海申环环境工程有限公司 | Method for restoring cadmium-polluted farmland soil |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115537204A (en) * | 2022-09-20 | 2022-12-30 | 徐州工程学院 | Preparation process and application of biological carbon modifier for acid soil |
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| WO2003059544A1 (en) * | 2002-01-17 | 2003-07-24 | Toyota Jidosha Kabushiki Kaisha | Method of purifying contaminated soil using microorganism |
| CN108841392A (en) * | 2018-05-17 | 2018-11-20 | 华东理工大学 | Utilize the conditioner of microorganism remediation organic polluted soil |
| CN109174955A (en) * | 2018-08-23 | 2019-01-11 | 天津城建大学 | A kind of solidification of petroleum hydrocarbon contaminated beach salty soil utilizes method |
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| CN100371094C (en) * | 2005-12-21 | 2008-02-27 | 中国石油化工股份有限公司 | In situ biological restoring method of petroleum polluted soil |
| CN105478460A (en) * | 2016-01-12 | 2016-04-13 | 山东佳星环保科技有限公司 | Bioremediation method of oil-contaminated soil |
| CN108219797A (en) * | 2017-12-12 | 2018-06-29 | 浙江海洋大学 | A kind of soil moisturizing agent |
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2020
- 2020-12-16 CN CN202011485272.7A patent/CN112812779A/en active Pending
- 2020-12-29 WO PCT/CN2020/140852 patent/WO2022126756A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003059544A1 (en) * | 2002-01-17 | 2003-07-24 | Toyota Jidosha Kabushiki Kaisha | Method of purifying contaminated soil using microorganism |
| CN108841392A (en) * | 2018-05-17 | 2018-11-20 | 华东理工大学 | Utilize the conditioner of microorganism remediation organic polluted soil |
| CN109174955A (en) * | 2018-08-23 | 2019-01-11 | 天津城建大学 | A kind of solidification of petroleum hydrocarbon contaminated beach salty soil utilizes method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113731372A (en) * | 2021-09-15 | 2021-12-03 | 陕西环保产业研究院有限公司 | Peat adsorbent for treating oil spill contaminated soil and treatment method |
| CN113731372B (en) * | 2021-09-15 | 2023-06-09 | 陕西环保产业研究院有限公司 | Peat adsorbent for treating spilled oil polluted soil and treatment method |
| CN115338239A (en) * | 2022-03-04 | 2022-11-15 | 上海申环环境工程有限公司 | Method for restoring cadmium-polluted farmland soil |
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| WO2022126756A1 (en) | 2022-06-23 |
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