CN111922061B - Soil remediation agent and preparation method and application thereof - Google Patents
Soil remediation agent and preparation method and application thereof Download PDFInfo
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- CN111922061B CN111922061B CN202010689221.XA CN202010689221A CN111922061B CN 111922061 B CN111922061 B CN 111922061B CN 202010689221 A CN202010689221 A CN 202010689221A CN 111922061 B CN111922061 B CN 111922061B
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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
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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
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
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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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
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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
- C09K2101/00—Agricultural use
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a soil remediation agent, a preparation method and application thereof, and belongs to the technical field of soil remediation. The soil remediation agent consists of the following components in parts by weight: 2-5 parts of sodium bicarbonate, 1-3 parts of potassium periodate and 5 parts of sodium ferrate. The invention also relates to a preparation method and application of the soil remediation agent. Compared with other existing remediation agents, the soil remediation agent can rapidly remove petroleum pollutants in polluted soil, is better in effect, safer in operation and higher in stability, and meanwhile, the content of petroleum hydrocarbon in the soil after remediation is obviously lower, and meanwhile, the physical properties of the soil cannot be damaged.
Description
Technical Field
The invention belongs to the technical field of soil remediation, and particularly relates to a soil remediation agent and a preparation method and application thereof.
Background
Petroleum is a high-value energy material, more and more oil fields are discovered in China at present, the exploitation strength of petroleum is gradually increased, but the petroleum can release pollutants. The pollutants released into the environment by petroleum include Volatile Organic Compounds (VOCs), semi-volatile organic compounds (SVOCs), solvents, Polycyclic Aromatic Hydrocarbons (PAHs), total petroleum hydrocarbon pollutants (TPH), and the like. The pollutants can enter the soil to influence the soil geological structure, and meanwhile, if the pollutants are not treated in time, the pollutants can easily permeate into underground water to pollute the underground water.
At present, the in-situ oxidation treatment technology is a mature technology for treating soil organic pollutants. The method mainly comprises the step of adding various oxidants into the petroleum-polluted soil, wherein the commonly used oxidants at present comprise KMnO4, CaO2, H2O2, O3, Na2S2O8, Fenton and other reagents, and the effect of removing pollutants is achieved by utilizing the oxidation reaction of chemical oxidants and pollutants.
However, the existing soil remediation agents have unsatisfactory remediation effects on petroleum hydrocarbons, and are easy to cause secondary pollution to soil.
Disclosure of Invention
The invention provides a soil remediation agent and a preparation method and application thereof for solving the technical problems.
In order to solve the above technical problems, the present invention provides a soil remediation agent.
The technical scheme for solving the technical problems is as follows: a soil remediation agent comprises the following components in parts by weight: 2-5 parts of sodium bicarbonate, 1-3 parts of potassium periodate and 5 parts of sodium ferrate.
The soil remediation agent has the beneficial effects that:
(1) the soil remediation agent has the advantages of easily available raw materials, high remediation efficiency and low remediation cost;
(2) the soil remediation agent can rapidly remove petroleum pollutants in polluted soil, has better effect compared with other remediation agents, is safer to operate, has high stability, and has the content of petroleum hydrocarbon in the soil after remediation obviously lower than that of other remediation agents.
(3) In the soil to be repaired, after the soil repairing agent is used, no agent residue exists, and the physical properties of the soil are not damaged.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the paint comprises the following components in parts by weight: 2-3 parts of sodium bicarbonate, 1-2 parts of potassium periodate and 5 parts of sodium ferrate.
The beneficial effect of adopting the further scheme is that: the soil remediation effect is better.
Further, the paint comprises the following components in parts by weight: 2 parts of sodium bicarbonate, 1 part of potassium periodate and 5 parts of sodium ferrate.
The beneficial effect of adopting the further scheme is that: the soil remediation effect is better.
Further, the mass fraction of the sodium bicarbonate solution is 0.2% -0.5%.
The beneficial effect of adopting the further scheme is that: the soil remediation effect is better.
Further, the molar concentration of the sodium ferrate is 0.03 mol/L.
The beneficial effect of adopting the further scheme is that: the soil remediation effect is better.
Further, the mass fraction of the potassium periodate solution is 0.1-0.3%.
The beneficial effect of adopting the further scheme is that: the soil remediation effect is better.
Secondly, the invention provides a preparation method of the soil remediation agent for solving the technical problems.
The technical scheme for solving the technical problems is as follows: a preparation method of a soil remediation agent comprises the following steps:
weighing the following components in parts by weight: 2-5 parts of sodium bicarbonate, 1-3 parts of potassium periodate and 5 parts of sodium ferrate, stirring the potassium periodate at 25 ℃, simultaneously adding the sodium bicarbonate, stirring for 10min, adding the sodium ferrate, and uniformly mixing to obtain the soil remediation agent.
The preparation method of the invention has the beneficial effects that: the soil remediation agent has the advantages of simple preparation process, easy operation, capability of being prepared at the place where the soil remediation agent is actually needed, no waste due to the amount of the soil remediation agent, good remediation effect of the prepared soil remediation agent and obvious reduction of the content of petroleum hydrocarbon in the soil.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the stirring power is 1.2 kw.
The beneficial effect of adopting the further scheme is that: the mixing is more uniform, and the prepared soil remediation agent has better effect.
Thirdly, the invention provides an application of the soil remediation agent for solving the technical problems.
The technical scheme for solving the technical problems is as follows: an application of a soil remediation agent in remediation of petroleum hydrocarbon contaminated soil.
On the basis of the technical scheme, the invention can be further improved as follows.
The application method comprises the following steps:
taking the soil polluted by the petroleum hydrocarbon, crushing, adding the soil remediation agent according to the weight ratio of 1g to 0.2g, adding water according to the ratio of 1ml to 1g of water to the soil, oscillating and leaching for 4h at 25 ℃, taking out, standing for 24h, air-drying and grinding to finish soil remediation.
The application of the invention has the beneficial effects that: the soil remediation agent can rapidly and effectively remediate petroleum in soil, and is good in remediation effect, and the soil remediation agent cannot cause secondary damage to soil and cannot destroy the physical properties of the soil.
Detailed Description
The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
Example 1
The embodiment provides a soil remediation agent which comprises the following components in parts by weight: 2 parts of sodium bicarbonate, 1 part of potassium periodate and 5 parts of sodium ferrate. Wherein the mass fraction of the sodium bicarbonate solution is 0.5%, the molar concentration of the sodium ferrate is 0.03mol/L, and the mass fraction of the potassium periodate solution is 0.3%.
The embodiment also provides a preparation method of the soil remediation agent, which comprises the following steps:
weighing the following components in parts by weight: 2 parts of sodium bicarbonate, 1 part of potassium periodate and 5 parts of sodium ferrate, stirring the potassium periodate by adopting a stirrer with the power of 1.2kw at the temperature of 25 ℃, simultaneously adding the sodium bicarbonate, continuously stirring for 10min, gradually adding the sodium ferrate, and uniformly stirring and mixing to obtain the soil remediation agent.
Example 2
The embodiment provides a soil remediation agent, which consists of the following components in parts by weight: 5 parts of sodium bicarbonate, 3 parts of potassium periodate and 5 parts of sodium ferrate. Wherein the mass fraction of the sodium bicarbonate solution is 0.3%, the molar concentration of the sodium ferrate is 0.03mol/L, and the mass fraction of the potassium periodate solution is 0.2%.
The embodiment also provides a preparation method of the soil remediation agent, which comprises the following steps:
weighing the following components in parts by weight: 5 parts of sodium bicarbonate, 3 parts of potassium periodate and 5 parts of sodium ferrate, stirring the potassium periodate by adopting a stirrer with the power of 1.2kw at 25 ℃, simultaneously adding the sodium bicarbonate, continuously stirring for 10min, gradually adding the sodium ferrate, and uniformly stirring and mixing to obtain the soil remediation agent.
Example 3
The embodiment provides a soil remediation agent which comprises the following components in parts by weight: 3 parts of sodium bicarbonate, 2 parts of potassium periodate and 5 parts of sodium ferrate. Wherein the mass fraction of the sodium bicarbonate solution is 0.2%, the molar concentration of the sodium ferrate is 0.02mol/L, and the mass fraction of the potassium periodate solution is 0.3%.
The embodiment also provides a preparation method of the soil remediation agent, which comprises the following steps:
weighing the following components in parts by weight: 3 parts of sodium bicarbonate, 2 parts of potassium periodate and 5 parts of sodium ferrate, stirring the potassium periodate by adopting a stirrer with the power of 1.2kw at the temperature of 25 ℃, simultaneously adding the sodium bicarbonate, stirring for 10min, gradually adding the sodium ferrate, and uniformly stirring and mixing to obtain the soil remediation agent.
Example 4
The embodiment provides application of a soil remediation agent, and the application method comprises the following steps:
taking the soil polluted by the petroleum hydrocarbon, crushing, adding the soil remediation agent according to the proportion of 1g to 0.2g of the soil polluted by the petroleum hydrocarbon and the soil remediation agent, adding water according to the proportion of 1ml to 1g of the water to the soil, oscillating and leaching for 4 hours at 25 ℃ by adopting a constant temperature oscillator under the power of 1kw, taking out and standing for 24 hours, and carrying out air drying and grinding to finish the soil remediation.
Examples of the experiments
Specifically, the existing 2 kinds of soil polluted by petroleum hydrocarbon are selected and divided into four parts, the total petroleum hydrocarbon content in the soil before four parts of treatment is measured, then the existing sodium persulfate soil remediation agent and the soil remediation agent prepared in the embodiment 1 are respectively adopted to treat the soil by the using method, the total petroleum hydrocarbon content in the treated soil is measured, specifically, the infrared spectrophotometry is adopted for measurement, and the measurement standard is executed according to the standard of HJ 1051-2019. The results of the measurements are specifically given in table 1 below.
TABLE 1 Total petroleum hydrocarbon content in petroleum hydrocarbon contaminated soils
The soil remediation agents of example 1 removed petroleum hydrocarbons from the soil at 90.8% and 92.93%. The removal rate of the sodium persulfate soil remediation agent on petroleum hydrocarbon in soil is 83.70% and 85.16%. Therefore, compared with the prior sodium persulfate soil remediation agent, the removal rate of the soil remediation agent is improved by 7.1 percent and 7.77 percent.
It is to be noted that "comprising" in the present invention means that it may include other components in addition to the components described, and the "comprising" may be replaced with "being" or "consisting of … …" in a closed manner.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (4)
1. The application of a soil remediation agent in remediation of petroleum hydrocarbon contaminated soil is characterized in that the application method comprises the following steps:
taking the soil polluted by the petroleum hydrocarbon, crushing the soil, adding a soil remediation agent according to the weight ratio of 1g to 0.2g, adding water according to the ratio of 1ml to 1g of water to the soil, oscillating and leaching the soil for 4 hours at 25 ℃, taking the soil out, standing the soil for 24 hours, and air-drying and grinding the soil to complete remediation of the soil;
the soil remediation agent comprises the following components in parts by weight: 2-5 parts of sodium bicarbonate, 1-3 parts of potassium periodate and 5 parts of sodium ferrate;
the mass fraction of the sodium bicarbonate solution is 0.2-0.5%;
the molar concentration of the sodium ferrate is 0.03 mol/L;
the mass fraction of the potassium periodate solution is 0.1-0.3%;
the preparation method of the soil remediation agent comprises the following steps:
weighing the following components in parts by weight: 2-5 parts of sodium bicarbonate, 1-3 parts of potassium periodate and 5 parts of sodium ferrate, stirring the potassium periodate at 25 ℃, simultaneously adding the sodium bicarbonate, stirring for 10min, adding the sodium ferrate, and uniformly mixing to obtain the soil remediation agent.
2. The use according to claim 1, characterized by consisting of the following components in parts by weight: 2-3 parts of sodium bicarbonate, 1-2 parts of potassium periodate and 5 parts of sodium ferrate.
3. The use according to claim 1, characterized by consisting of the following components in parts by weight: 2 parts of sodium bicarbonate, 1 part of potassium periodate and 5 parts of sodium ferrate.
4. Use according to claim 1, wherein the stirring is carried out at a power of 1.2 kw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010689221.XA CN111922061B (en) | 2020-07-16 | 2020-07-16 | Soil remediation agent and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010689221.XA CN111922061B (en) | 2020-07-16 | 2020-07-16 | Soil remediation agent and preparation method and application thereof |
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| CN111922061A CN111922061A (en) | 2020-11-13 |
| CN111922061B true CN111922061B (en) | 2022-07-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002950123A0 (en) * | 2002-07-11 | 2002-09-12 | Sheehy, Donna | A soil additive |
| CN105478457B (en) * | 2015-12-09 | 2018-04-20 | 天津环科立嘉环境修复科技有限公司 | A kind of method for repairing organophosphorus pesticide pollution soil |
| CN107265606B (en) * | 2017-07-21 | 2020-04-10 | 中国地质大学（武汉） | Method for removing organic pollutants based on periodate oxidation |
| CN108046404B (en) * | 2017-12-20 | 2020-04-10 | 浙江省环境保护科学设计研究院 | In-situ chemical oxidation remediation method for organic-polluted underground water |
| CN109207156B (en) * | 2018-07-20 | 2021-04-20 | 成都恩承科技股份有限公司 | Repairing agent and repairing method for petroleum polluted soil |
| CN111087263A (en) * | 2019-11-13 | 2020-05-01 | 刘海威 | Composite repairing agent for organic contaminated soil, preparation method and application thereof |
| CN110964535A (en) * | 2019-11-28 | 2020-04-07 | 湖北同惠生物工程有限公司 | Soil remediation agent and preparation method and application thereof |
| CN111018080A (en) * | 2019-12-06 | 2020-04-17 | 中铁科学研究院有限公司成都分公司 | Test device for treating petroleum hydrocarbon pollutants in underground water and application thereof |
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Effective date of registration: 20230918 Address after: No. 1, Jinxianqiao Road, Jinniu District, Chengdu, Sichuan 610031 Patentee after: CHINA RAILWAY ACADEMY CO.,LTD. Address before: No. 2305, 23rd floor, building 1, No. 666, Jinfu Road, Jinniu District, Chengdu, Sichuan 610000 Patentee before: CHENGDU BRANCH OF CHINA RAILWAY SCIENCE RESEARCH INSTITUTE Co.,Ltd. |
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