CN109207156A - A kind of renovation agent and restorative procedure for Petroleum concentration soil - Google Patents
A kind of renovation agent and restorative procedure for Petroleum concentration soil Download PDFInfo
- Publication number
- CN109207156A CN109207156A CN201810804526.3A CN201810804526A CN109207156A CN 109207156 A CN109207156 A CN 109207156A CN 201810804526 A CN201810804526 A CN 201810804526A CN 109207156 A CN109207156 A CN 109207156A
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- solidified cell
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of renovation agent and restorative procedure for Petroleum concentration soil, solve the technical problems such as big, complex process of soil remediation chemicals treatment oil-polluted soils long processing period, dosage in the prior art.Renovation agent of the invention includes oxidation unit and solidified cell, and wherein oxidation unit contains Na2S2O815-35 parts, Fe2SO41-10 parts, 5-15 parts of CaO, 1-10 parts of citric acid, 1-10 parts of hydrogen peroxide；15-35 parts of solidified cell cement, 18-30 parts of flyash, 1-8 parts of charcoal；The mass ratio of oxidation unit and solidified cell is 1:0.5-3.The method comprise the steps that the sundries in removal contaminated soil；Renovation agent, water are added in oil-polluted soils, stirred evenly；It reacts under field conditions (factors) again.Each component synergistic effect in renovation agent of the present invention, it is common to play the effect for repairing Petroleum concentration soil.
Description
Technical field
The invention belongs to Petroleum concentration technical field of soil remediation during exploitation of oil-gas field, and in particular to one kind is used for
The renovation agent and restorative procedure of Petroleum concentration soil.
Background technique
Petroleum gas is as " industrial blood ", and increasingly developed with human social economy, the mankind are to petroleum resources
Demand it is also increasing.Due to oil exploitation and Petroleum Processing Technology and managerial deficiency, substantial oil is directly entered soil
Earth causes serious harm to ecological environment of soil.Oil pollution component is sufficiently complex, mainly by hydrocarbon, halogenated
The composition such as hydrocarbon, nitrogenous, sulfur-containing compound.Wherein the halogenated hydrocarbons in hydrocarbon compound, benzene homologues, phenanthrene etc. belong to three cause wastes
(carcinogenic, teratogenesis, mutagenesis), once human health can be caused to seriously endanger into soil.Therefore the ring of oil-polluted soils
Border pollution problem is one of the main environment risk that oil and gas enterprise faces.
Currently used soil remediation method is broadly divided into: peripheral doses technology, bioremediation technology and chemical remediation skill
Art.Peripheral doses technology mainly includes gas phase extracting, extraction, elution, thermal desorption etc., peripheral doses technology have processing quickly,
The advantages that efficient, but it is be easy to cause secondary pollution, equipment requirement is high, and economic benefit is low；Bioremediation technology mainly includes micro-
Biodegrade and phytoremediation, its main feature is that it is economical, do not generate secondary pollution, but its long processing period, low efficiency, by environment shadow
Ring limitation.
Chemical remediation is mainly redox, realizes that target is dirty by the addition of some oxidation units and oxidation promoter
The degradation of object is contaminated, which has the advantages that efficient, quick, easy to operate, operating cost is low etc..It is domestic at present using KMnO4 or
Single repairs more, and increasingly complicated for pollution soil environment for oil-polluted soils by activation persulfate,
Such method cannot effectively, be rapidly achieved reparation require, and oxidation unit selection it is improper also will form secondary pollution, cause resource
Waste.
Disclose that a kind of petroleum hydrocarbon contaminated soil repairs medicament and its application method, medicament agent ingredient were in the prior art
Sodium sulphate (Na2S2O8), Zero-valent Iron (Fe0) and calper calcium peroxide (CaO2) composition, the Na2S2O8、Fe0And CaO2Molar ratio be
5/2/2.The technology is by adding Na into mud system2S2O8, and add Fe0And CaO2Out-phase activation is carried out, can be generated simultaneously
Potentiometric titrations and hydroxyl radical free radical (OH) two kinds of extremely strong free radicals of oxidisability decompose the petroleum hydrocarbon in soil, belong to
Soil environment recovery technique field.It repairs medicament and uses parameter are as follows: the dosage of sodium peroxydisulfate, Zero-valent Iron and calper calcium peroxide is distinguished
For 2mmol/g soil, 0.8mmol/g soil and 0.8mmol/g soil；Soil ratio (milliliter: gram) it is 2.5: 1；4628h is reacted after mixing；
Water can be recycled.After this method is repaired for petroleum hydrocarbon contaminated soil, although certain areas oil pollution can be repaired effectively
Soil, but this method needs mating corresponding dehydration equipment, and this method water consumption is big, and water-deficient area this kind of for Xinjiang is more uncomfortable
With；Furthermore the process cycle of this method is too long, and dosing is big, and economic benefit is unobvious.
Therefore it provides a kind of renovation agent for Petroleum concentration soil, process cycle is short, easy to operate, cheap,
Definite effect becomes those skilled in the art's urgent problem to be solved.
Summary of the invention
Technical problem solved by the present invention is providing a kind of renovation agent for Petroleum concentration soil, existing skill is solved
The technical problems such as big, complex process of soil remediation chemicals treatment oil-polluted soils long processing period, dosage in art.
The present invention also provides the methods for repairing Petroleum concentration soil using the renovation agent.
The technical solution adopted by the invention is as follows:
A kind of renovation agent for Petroleum concentration soil of the present invention, including oxidation unit and solidified cell,
Described in oxidation unit contain the components of following parts by weight: with Na2S2O815-35 parts, Fe2SO41-10 parts, 5-15 parts of CaO,
1-10 parts of citric acid, 1-10 parts of hydrogen peroxide；
The solidified cell contains the component of following parts by weight: 15-35 parts of cement, 18-30 parts of flyash, charcoal 1-8
Part；
The mass ratio of the oxidation unit and solidified cell is 1:0.5-3.
Further, the oxidation unit contains the component of following parts by weight: with Na2S2O820-30 parts, Fe2SO4 3-7
Part, 8-12 parts of CaO, 3-8 parts of citric acid, 3-8 parts of hydrogen peroxide.
Further, the oxidation unit contains the component of following parts by weight: with Na2S2O825 parts, Fe2SO45 parts, CaO
10 parts, 5 parts of citric acid, 5 parts of hydrogen peroxide.
Further, the solidified cell contains the component of following parts by weight: 20-30 parts of cement, 20-25 parts of flyash,
2-5 parts of charcoal.
Further, the solidified cell contains the component of following parts by weight: 25 parts of cement, 22.5 parts of flyash, biology
2.5 parts of charcoal.
Further, the mass ratio of the oxidation unit and solidified cell is 1:1.
A kind of method that Petroleum concentration soil is repaired using renovation agent as described above of the present invention, including it is following
Step:
Step 1. removes the sundries in contaminated soil；
Renovation agent, water are added in oil-polluted soils by step 2., are stirred evenly；
Step 3. will treated that oil-polluted soils react under field conditions (factors) through step 2.
Further, material is aqueous for 35-45% after the additional amount of water meets mixing in step 2.
Further, it is reacted under field conditions (factors) in step 3, it, can be on oil-polluted soils such as exceedingly odious weather
The work that spreads a layer of clay film.
Further, when petroleum contaminated soil hydrocarbon content is 1-3%, corresponding renovation agent additive amount is soil quality score
5-20%.
Compared with prior art, the invention has the following advantages:
Design science of the present invention, rationally, each component synergistic effect in renovation agent, common play repair Petroleum concentration
The effect of soil.
Na in renovation agent of the invention2S2O8With hydrogen peroxide as oxidant, oxidation is played to petroleum hydrocarbons；CaO
And Fe2+It can lure into and generate potentiometric titrations and hydroxyl radical free radical, auxiliary material of the citric acid as oxidation unit in system
Fe can be efficiently reduced2+Consumption to free radical, improves Fe2+Utilization rate and more free radicals being capable of oxisol
Polluter in earth.
Cement in renovation agent of the present invention in solidified cell can be improved temperature in hydration process, facilitate Na2S2O8It is right
In the oxidative degradation of petroleum hydrocarbons；Since flyash and charcoal have raw material and petroleum hydrocarbons certain suction
Attached effect, flyash and charcoal can increase reaction raw materials and be conducive to improve reaction effect with the contact of petroleum pollution in soil
Rate；Charcoal can also promote biodegrade of the indigenous microorganism to petroleum hydrocarbons in soil.Furthermore solidified cell plus
Pollutant in stable soil can also be played the role of by entering, and reduce its migration performance, reduce contaminated area.
Renovation agent of the present invention can be directly used for the in-situ immobilization of soil, not only improve operation difficulty, also reduce equipment
Investment.Compared with prior art, when carrying out oil-polluted soils reparation, The present invention reduces the usage amount of medicament, constructions
Simplicity, the prices of raw materials are cheap.By aforesaid operations treated soil oil content, pollution meets that " Sludge in Oilfields is comprehensive
Close utilize contamination control standard " (DB 23/T 1413-2010) corresponding requirements oil content less than 1%.
Specific embodiment
It is illustrated below by way of specific embodiment is further to summary of the invention of the invention, but should not be construed as the present invention
Range be only limitted to example below, invention thinking according to the present invention and entire contents, can will be each in following instance
Technical characteristic makes combination/replacement/adjustment/modification appropriate etc., this is will be obvious to those skilled in the art that still
Belong to the scope that the present invention protects.
Embodiment 1
The composition for present embodiments providing renovation agent of the invention, specifically see the table below:
Table 1
Wherein, cement is 32.5# portland cement.
Embodiment 2
Present embodiments provide renovation agent of the invention to Tarim, Xinjiang well site oil-polluted soils restorative procedure, originally
For its composition of the renovation agent that embodiment uses as shown in number 1 in table 1, specific restorative procedure is as follows:
After carrying out simple refuse classification and screening by vibrating screen first, directly by renovation agent, water and oil pollution soil
Earth is uniformly mixed by excavator, and the dosage of renovation agent is the 20% of contaminated soil mass fraction, and water additional amount is Polluted Soil
The 25% of earth mass fraction, mixed soil sample are placed in reaction in-situ 10 days.Soil oil content is measured after reaction from initial
2.82% be reduced to 0.78%, meet " Sludge in Oilfields comprehensively utilizes contamination control standard " (DB 23/T 1413-
2010) standard.
Embodiment 3
Renovation agent of the invention is present embodiments provided to Tianjin well site oil-polluted soils rehabilitating soil restorative procedure,
For its composition of the renovation agent that the present embodiment uses as shown in number 3 in table 1, specific restorative procedure is as follows:
After being sieved first by vibrating screen, directly renovation agent, water are mixed with oil-polluted soils by excavator
Uniformly, the dosage of renovation agent is the 15% of soil quality score, and water additional amount is the 28% of contaminated soil mass fraction, mixing
Soil afterwards is placed in reaction in-situ 10 days, measures soil oil content from 2.48% and is reduced to 1.08%；It is surveyed after reacting 14 days
Obtaining soil oil content is 0.86%, meets " Sludge in Oilfields comprehensively utilizes contamination control standard " (DB 23/T 1413-
2010) standard.
The foregoing is merely presently preferred embodiments of the present invention, is merely illustrative for the purpose of the present invention, rather than to this hair
Bright range is defined.Without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to of the invention
The various changes and improvements that technical solution is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (10)
1. a kind of renovation agent for Petroleum concentration soil, which is characterized in that including oxidation unit and solidified cell, wherein institute
State the component that oxidation unit contains following parts by weight: with Na2S2O815-35 parts, Fe2SO41-10 parts, 5-15 parts of CaO, citric acid
1-10 parts, 1-10 parts of hydrogen peroxide；
The solidified cell contains the component of following parts by weight: 15-35 parts of cement, 18-30 parts of flyash, 1-8 parts of charcoal；
The mass ratio of the oxidation unit and solidified cell is 1:0.5-3.
2. a kind of renovation agent for Petroleum concentration soil according to claim 1, which is characterized in that the oxidation is single
Member contains the component of following parts by weight: with Na2S2O820-30 parts, Fe2SO43-7 parts, it is 8-12 parts of CaO, 3-8 parts of citric acid, double
3-8 parts of oxygen water.
3. a kind of renovation agent for Petroleum concentration soil according to claim 2, which is characterized in that the oxidation is single
Member contains the component of following parts by weight: with Na2S2O825 parts, Fe2SO45 parts, 10 parts of CaO, 5 parts of citric acid, 5 parts of hydrogen peroxide.
4. a kind of renovation agent for Petroleum concentration soil according to claim 1, which is characterized in that the solidification is single
Member contains the component of following parts by weight: 20-30 parts of cement, 20-25 parts of flyash, 2-5 parts of charcoal.
5. a kind of renovation agent for Petroleum concentration soil according to claim 4, which is characterized in that the solidified cell
Component containing following parts by weight: 25 parts of cement, 22.5 parts of flyash, 2.5 parts of charcoal.
6. a kind of renovation agent for Petroleum concentration soil described in -5 any one according to claim 1, which is characterized in that
The mass ratio of the oxidation unit and solidified cell is 1:1.
7. a kind of method that the renovation agent using as described in claim 1-7 any one repairs Petroleum concentration soil, special
Sign is, comprising the following steps:
Step 1. removes the sundries in contaminated soil；
Renovation agent, water are added in oil-polluted soils by step 2., are stirred evenly；
Step 3. will treated that oil-polluted soils react under field conditions (factors) through step 2.
8. the method according to the description of claim 7 is characterized in that material is aqueous after the additional amount of water meets mixing in step 2
For 35-45%.
9. according to the method described in claim 8, it is characterized in that, reacted under field conditions (factors) in step 3, in case of exceedingly odious
Weather, can be in one layer of oil-polluted soils upper berth geomembrane.
10. according to the method described in claim 9, it is characterized in that, being corresponded to when petroleum contaminated soil hydrocarbon content is 1-3%
Renovation agent additive amount is the 5-20% of soil quality score.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810804526.3A CN109207156B (en) | 2018-07-20 | 2018-07-20 | Repairing agent and repairing method for petroleum polluted soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810804526.3A CN109207156B (en) | 2018-07-20 | 2018-07-20 | Repairing agent and repairing method for petroleum polluted soil |
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| Publication Number | Publication Date |
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| CN109207156A true CN109207156A (en) | 2019-01-15 |
| CN109207156B CN109207156B (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810804526.3A Active CN109207156B (en) | 2018-07-20 | 2018-07-20 | Repairing agent and repairing method for petroleum polluted soil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314928A (en) * | 2019-07-23 | 2019-10-11 | 河北工业大学 | A kind of method of petroleum hydrocarbons migration during in-situ control is native |
| CN111922061A (en) * | 2020-07-16 | 2020-11-13 | 中铁科学研究院有限公司成都分公司 | Soil remediation agent and preparation method and application thereof |
| CN112410037A (en) * | 2020-10-15 | 2021-02-26 | 南京工业大学 | Composite functional material for soil pollution treatment and preparation method thereof |
| WO2021248741A1 (en) * | 2020-06-08 | 2021-12-16 | 北京高能时代环境技术股份有限公司 | Agent for in-situ remediation of contaminated site and construction method for same |
-
2018
- 2018-07-20 CN CN201810804526.3A patent/CN109207156B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314928A (en) * | 2019-07-23 | 2019-10-11 | 河北工业大学 | A kind of method of petroleum hydrocarbons migration during in-situ control is native |
| WO2021248741A1 (en) * | 2020-06-08 | 2021-12-16 | 北京高能时代环境技术股份有限公司 | Agent for in-situ remediation of contaminated site and construction method for same |
| CN111922061A (en) * | 2020-07-16 | 2020-11-13 | 中铁科学研究院有限公司成都分公司 | Soil remediation agent and preparation method and application thereof |
| CN112410037A (en) * | 2020-10-15 | 2021-02-26 | 南京工业大学 | Composite functional material for soil pollution treatment and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN109207156B (en) | 2021-04-20 |
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Address after: No. 66, Chenghua District chic Bay, Chenghua District, Chengdu, Sichuan Applicant after: CHENGDU EN-SHAIN TECHNOLOGY Inc. Applicant after: SICHUAN ROREI TECHNOLOGY Co.,Ltd. Address before: 610000 No. 66 Mengchaiwan, Chengdu, Chenghua District, Chengdu City, Sichuan Province Applicant before: CHENGDU EN-SHAIN TECHNOLOGY Inc. Applicant before: SICHUAN ROREI TECHNOLOGY Co.,Ltd. |
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