CN110527515A - A kind of petroleum hydrocarbon contaminated soil renovation agent and its preparation and application method - Google Patents
A kind of petroleum hydrocarbon contaminated soil renovation agent and its preparation and application method Download PDFInfo
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- CN110527515A CN110527515A CN201910772002.5A CN201910772002A CN110527515A CN 110527515 A CN110527515 A CN 110527515A CN 201910772002 A CN201910772002 A CN 201910772002A CN 110527515 A CN110527515 A CN 110527515A
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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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- 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
- B09C2101/00—In situ
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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
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
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- Soil Sciences (AREA)
- Engineering & Computer Science (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 discloses a kind of petroleum hydrocarbon contaminated soil renovation agent and its preparation and application methods, belong to technical field of soil remediation.The petroleum hydrocarbon contaminated soil renovation agent that the present invention discloses protection includes wheat straw biologic charcoal, sepiolite, flyash and calper calcium peroxide capsule of nano; the proportion of science is carried out by the property using various raw materials; it is used in mixed way the activity and abundance for promoting petroleum hydrocarbon degradation bacterium, to be repaired for petroleum hydrocarbon farmland pollution soil.The petroleum hydrocarbon content of soil can be effectively reduced in soil-repairing agent provided by the present invention, fundamentally prevent petroleum hydrocarbon from entering in farmland plant body, have many advantages, such as at low cost, easy to operate and easy to spread.Soil-repairing agent provided by the invention can not only enhance the degradation capability of the petroleum hydrocarbon degradation bacterium in petroleum hydrocarbon contaminated soil, pollution-free without exceeded to reduce petroleum hydrocarbon concentration, and raw materials used common and be easy to get, and not will cause secondary pollution.
Description
Technical field
The invention belongs to technical field of soil remediation, and in particular to a kind of petroleum hydrocarbon contaminated soil renovation agent and its preparation side
Method.
Background technique
The petroleum energy important as one kind is the blood of modern economy, with daily life, industrial production, space flight military project
Deng rapid development, the consumption of petroleum increasing year by year, while each during PETROLEUM PROCESSING, transport, storage and utilization
Kind leakage accident also results in the petroleum hydrocarbon contaminated of soil.
Agricultural land soil is the basis that the mankind obtain food and other available resources, in recent years, it is dirty that a lot of petroleum hydrocarbons has occurred
The accident for contaminating agricultural land soil, after petroleum hydrocarbon enters in soil, there is the influence of various aspects, one side soil to soil environment quality
The accumulation of middle petroleum hydrocarbon can cause soil aperture to block, and hinder the breathing and absorption of root system of plant, and root system is caused to rot, and influence
The root growth of plant, meanwhile, petroleum hydrocarbon can be also enriched in plant to be entered in body eventually by food chain, causes environment
Risk and human health risk；On the other hand, it may not permeated the ground and polluted underground water, increase by the petroleum hydrocarbon of adsorption by soil
Add pollution range, so that generate on many levels of environment for human survival influences extensively.Therefore, in conclusion these petroleum hydrocarbons
Organic contamination place seriously threatens the environmental aspect of surrounding, the recycling of residents ' health and soil, fast there is an urgent need to take
Fast efficient measure is administered.
In the method for removal soil organic pollutant, rehabilitation cost is relatively low, repairs because having in situ chemical oxidation method
The advantages that multiple quick, easy to operate, is widely used.However, degradation efficiency of traditional soil-repairing agent to organic pollutant
It is unsatisfactory, and soil nutrient, physicochemical property are influenced greatly, to easily cause secondary pollution.
Therefore, developing a kind of can effectively remove petroleum hydrocarbons and reaction is mild, low energy consumption, generates without bazardous waste
Soil-repairing agent the problem of becoming those skilled in the art's urgent need to resolve.
Summary of the invention
In view of this, providing a kind of petroleum hydrocarbon contaminated soil the purpose of the present invention is aiming at the problems existing in the prior art
Earth renovation agent and preparation method thereof.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of petroleum hydrocarbon contaminated soil renovation agent, the component and its weight for accounting for the soil-repairing agent that the renovation agent includes
Measure number: 40~55 parts of wheat straw biologic charcoal, 15~30 parts of sepiolite, 15~25 parts of flyash, the micro- glue of calper calcium peroxide nanometer
5~15 parts of capsule.
Preferably, the renovation agent includes component and its parts by weight for accounting for the soil-repairing agent: wheat stalk is raw
45~50 parts of object charcoal, 15~25 parts of sepiolite, 15~20 parts of flyash, 10~15 parts of calper calcium peroxide capsule of nano.
Preferably, the renovation agent includes component and its parts by weight for accounting for the soil-repairing agent: wheat stalk is raw
48 parts of object charcoal, 20 parts of sepiolite, 20 parts of flyash, 12 parts of calper calcium peroxide capsule of nano.
It should be noted that the present invention disclose protection petroleum hydrocarbon contaminated soil renovation agent include wheat straw biologic charcoal,
Sepiolite, flyash and calper calcium peroxide capsule of nano, the specific mechanism of action are as follows:
The wheat straw biologic charcoal phosphorus content that the present invention discloses selection is higher, can effectively improve soil fertility, and can make
It is utilized for the carbon source of microorganism by microorganism；The carbon source that petroleum hydrocarbon degradation bacterium can make full use of charcoal to provide, petroleum hydrocarbon degradation
Bacterium can mushroom out breeding, improve abundance, be more effectively completed petroleum hydrocarbon degradation process；
In addition, the flyash in raw material is the pH that soil can be improved in alkaline matter, suitably adjusted in renovation agent use process
Flyash dosage controls soil pH between 7~8.5, provides good alkalescent ring for petroleum hydrocarbon degradation bacterium decomposing petroleum hydrocarbon
Border；Flyash dosage can be increased in acid stronger farmland petroleum hydrocarbon contaminated soil, the rising of pH can activating part petroleum hydrocarbon
The activity of degradation bacteria.
Also, wheat straw biologic charcoal, flyash and sepiolite are used cooperatively by the application, and wherein sepiolite is in the soil
Part magnesium can dissociate come, be beneficial to increase magnesium in soil element content, crop biggish for magnesium demand, as paddy,
The yield and quality of the fruit such as the cereal crops such as corn and soybean and mango, longan, lichee has good castering action.In addition,
Sepiolite has very strong adsorptivity, and in the soil, and with the increase of activation modification de-magging, pore structure improves, specific surface area
It further increases, suction-operated enhancing.The absorption of sepiolite is mainly physical absorption, in the variation of soil " wet-dry "
Cheng Zhong, additionally it is possible to generate the effect of " aggregation " petroleum hydrocarbon contaminant.
In addition, the application utilizes the strong oxidizing property of calper calcium peroxide and the absorption of humic acid in calper calcium peroxide capsule of nano
Property, the degradation efficiency of organic pollutant is improved, traditional renovation agent low efficiency can be effectively solved, be not easy to disperse in soil environment
And to the biggish defect of Effect of soil nutrient.
In conclusion the present invention discloses the petroleum hydrocarbon contaminated soil renovation agent of protection because that can enhance petroleum hydrocarbon degradation bacterium
Degradation capability and reduce petroleum hydrocarbon content, therefore, the present invention provides it is a kind of can effectively remove petroleum hydrocarbons and reaction temperature
With the soil-repairing agent that low energy consumption, generates without bazardous waste, great market application and promotional value.
Preferably, the calper calcium peroxide capsule of nano according to parts by weight, consists of the following components: calper calcium peroxide 5~
10 parts, 1~3 part of humic acid, 5~10 parts of chitosan；Wherein calper calcium peroxide is by CaCl2、H2O2, NaOH and ammonium hydroxide be made, and mistake
Calcium oxide-humic acid nanocomposite partial size is 100~200nm.
A kind of preparation method of petroleum hydrocarbon contaminated soil renovation agent is also claimed in the present patent application, and the method is specifically wrapped
Include following steps:
(1) it dries, cut after cleaning wheat stalk, then cracking 4~5 is small under the conditions of 300 DEG C~350 DEG C of temperature
When, sieving obtains wheat straw biologic charcoal；
(2) calper calcium peroxide, humic acid, chitosan of formula ratio are weighed, and chemical coprecipitation is used to prepare partial size as 100
The calper calcium peroxide of~200nm-humic acid nanocomposite then takes appropriate chitosan to be dissolved in acetum and configures chitosan
Solution；
(3) it weighs calper calcium peroxide made from appropriate step (2)-humic acid nanocomposite and is dissolved in glacial acetic acid and be configured to mix
Solution is closed, is then slowly dropped into mixed solution in the chitosan solution prepared through step (2), is stirred when being added dropwise, and anti-
It answers and NaOH solution maintenance system pH is added dropwise in system between 10~11, to end of reaction, stand overnight, final centrifuge washing,
Dried and screened are up to calper calcium peroxide capsule of nano；
(4) flyash of formula ratio, sepiolite, the wheat straw biologic charcoal through step (2) preparation and through step are weighed respectively
Suddenly the calper calcium peroxide capsule of nano of (3) preparation is uniformly mixed to get the petroleum hydrocarbon contaminated soil renovation agent.
The application method of above-mentioned petroleum hydrocarbon contaminated soil renovation agent or the soil-repairing agent as made from above-mentioned preparation method,
The following steps are included:
When in use, first soil-repairing agent is applied into petroleum hydrocarbon contaminated soil, is stirred evenly, then moisturizing to soil is held
Water quantity holding is placed 25~30 days 55~65%.
Preferably, the dosage of the soil-repairing agent is the 3~5% of soil quality.
It can be seen via above technical scheme that compared with prior art, the present invention provides a kind of petroleum hydrocarbon contaminated soils
Renovation agent and its preparation and application method have following excellent effect:
1, soil-repairing agent provided by the invention carries out the proportion of science using the property of various raw materials, is used in mixed way promotion
The activity and abundance of petroleum hydrocarbon degradation bacterium, to be repaired for petroleum hydrocarbon farmland pollution soil；Soil provided by the present invention
The petroleum hydrocarbon content of soil can be effectively reduced in earth renovation agent, fundamentally prevent petroleum hydrocarbon from entering in farmland plant body, have at
The advantages that this is low, easy to operate and easy to spread；
2, soil-repairing agent provided by the invention can enhance the degradation of the petroleum hydrocarbon degradation bacterium in petroleum hydrocarbon contaminated soil
Ability, to prevent petroleum hydrocarbon from entering in crops, fundamentally prevents petroleum hydrocarbon from entering food to significantly reduce petroleum hydrocarbon concentration
Object chain, ensures food safety；And soil-repairing agent provided by the invention is raw materials used relatively conventional and is easy to get, pollution-free nothing
It is exceeded, it not will cause secondary pollution；
3, preparation method disclosed by the invention be on the prior art, to the degradation property of renovation agent, absorption property and
Dispersion performance advanced optimizes, can a step fabricated in situ based on calper calcium peroxide-humic acid nanocomposite soil remediation
Agent, and cyst material used is environmental-friendly natural organic matter chitosan, and new pollution will not be generated to soil.
In conclusion preparation method disclosed by the invention, which can obtain one kind, effectively removes petroleum hydrocarbons and anti-
Answer the soil-repairing agent that mild, low energy consumption, generates without bazardous waste, the great market application of the technical solution and promotional value.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
For a better understanding of the invention, further specific elaboration is made to the present invention below by following embodiment, but not
It can be regarded as limitation of the invention, it is some nonessential according to made by foregoing invention content for those skilled in the art
It improves and adjusts, be also considered as and be within the scope of the present invention.
The invention discloses a kind of petroleum hydrocarbon contaminated soil renovation agent and its preparation and application method, the petroleum hydrocarbon contaminated soil
The problem of petroleum-type organic pollution can be effectively relieved in earth renovation agent, prevent petroleum type organic from entering in farmland plant body,
And the preparation process is relatively simple, at low cost, is suitable for large-scale promotion.
The invention discloses a kind of petroleum hydrocarbon contaminated soil renovation agent, component and its account for the soil that the renovation agent includes
The parts by weight of earth renovation agent: 40~55 parts of wheat straw biologic charcoal, 15~30 parts of sepiolite, 15~25 parts of flyash, peroxide
Change 5~15 parts of calcium capsule of nano.
In order to further optimize the above technical scheme, calper calcium peroxide capsule of nano according to parts by weight, by following component
Composition: 5~10 parts of calper calcium peroxide, 1~3 part of humic acid, 5~10 parts of chitosan；Wherein calper calcium peroxide is by CaCl2、H2O2、
NaOH and ammonium hydroxide are made, and calper calcium peroxide-humic acid nanocomposite partial size is 100~200nm.
The invention also discloses the preparation methods of above-mentioned petroleum hydrocarbon contaminated soil renovation agent, specifically comprise the following steps:
(1) it dries, cut after cleaning wheat stalk, then cracking 4~5 is small under the conditions of 300 DEG C~350 DEG C of temperature
When, sieving obtains wheat straw biologic charcoal；
(2) calper calcium peroxide, humic acid, chitosan of formula ratio are weighed, and chemical coprecipitation is used to prepare partial size as 100
The calper calcium peroxide of~200nm-humic acid nanocomposite then takes appropriate chitosan to be dissolved in acetum and configures chitosan
Solution；
(3) it weighs calper calcium peroxide made from appropriate step (2)-humic acid nanocomposite and is dissolved in glacial acetic acid and be configured to mix
Solution is closed, is then slowly dropped into mixed solution in the chitosan solution prepared through step (2), is stirred when being added dropwise, and anti-
It answers and NaOH solution maintenance system pH is added dropwise in system between 10~11, to end of reaction, stand overnight, final centrifuge washing,
Dried and screened are up to calper calcium peroxide capsule of nano；
(4) flyash of formula ratio, sepiolite, the wheat straw biologic charcoal through step (2) preparation and through step are weighed respectively
Suddenly the calper calcium peroxide capsule of nano of (3) preparation is uniformly mixed to get the petroleum hydrocarbon contaminated soil renovation agent.
In addition, specifically include makes as follows the invention also discloses the application method of above-mentioned petroleum hydrocarbon contaminated soil renovation agent
With step:
When in use, first soil-repairing agent is applied into petroleum hydrocarbon contaminated soil, is stirred evenly, then moisturizing to soil is held
Water quantity holding is placed 25~30 days 55~65%.
In addition, it should be noted that, the dosage of the soil-repairing agent is the 3~5% of soil quality.
In the following, technical solution of the present invention will be further detailed in conjunction with specific embodiments.
Embodiment 1
A kind of petroleum hydrocarbon contaminated soil renovation agent, including component and its account for the parts by weight of the soil-repairing agent: it is small
42 parts of Wheat Straw charcoal, 28 parts of sepiolite, 20 parts of flyash, 10 parts of calper calcium peroxide capsule of nano.
Embodiment 2
A kind of petroleum hydrocarbon contaminated soil renovation agent, including component and its account for the parts by weight of the soil-repairing agent: it is small
43 parts of Wheat Straw charcoal, 25 parts of sepiolite, 20 parts of flyash, 12 parts of calper calcium peroxide capsule of nano.
Embodiment 3
A kind of petroleum hydrocarbon contaminated soil renovation agent, including component and its account for the parts by weight of the soil-repairing agent: it is small
48 parts of Wheat Straw charcoal, 20 parts of sepiolite, 20 parts of flyash, 12 parts of calper calcium peroxide capsule of nano.
Embodiment 4
A kind of petroleum hydrocarbon contaminated soil renovation agent, including component and its account for the parts by weight of the soil-repairing agent: it is small
45 parts of Wheat Straw charcoal, 15 parts of sepiolite, 25 parts of flyash, 15 parts of calper calcium peroxide capsule of nano.
Embodiment 5
A kind of petroleum hydrocarbon contaminated soil renovation agent, including component and its account for the parts by weight of the soil-repairing agent: it is small
50 parts of Wheat Straw charcoal, 18 parts of sepiolite, 20 parts of flyash, 12 parts of calper calcium peroxide capsule of nano.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The content of present invention is not limited only to the content of the various embodiments described above, and the combination of one of them or several embodiments is equally
The object of the invention may be implemented.
In order to further verify excellent effect of the invention, inventor has also carried out following comparative experiments:
Comparative example 1
As different from Example 3, sepiolite is not used in comparative example 1, remaining ingredient is identical.
Comparative example 2
As different from Example 3, wheat straw biologic charcoal is not used in comparative example 2, remaining ingredient is identical.
Comparative example 3
As different from Example 3, flyash is not used in comparative example 3, remaining ingredient is identical.
Comparative example 4
As different from Example 3, calper calcium peroxide capsule of nano, the complete phase of remaining ingredient are not used in comparative example 4
Together.
The present invention carries out stone using soil-repairing agent made from following preparation methods to above-described embodiment and comparative example respectively
Oil degradation rate measurement, to illustrate that the present invention discloses effective effect of the petroleum hydrocarbon contaminated soil renovation agent of protection, specific experiment behaviour
Make as follows:
The preparation method of above-mentioned petroleum hydrocarbon contaminated soil renovation agent, specifically comprises the following steps:
(1) it dries, cut after cleaning wheat stalk, then cracking 4~5 is small under the conditions of 300 DEG C~350 DEG C of temperature
When, sieving obtains wheat straw biologic charcoal；
(2) calper calcium peroxide, humic acid, chitosan for weighing formula ratio, use chemical coprecipitation prepare partial size for 100~
The calper calcium peroxide of 200nm-humic acid nanocomposite, then configures chitosan solution, and 2.4~5.0g chitosan is taken to be dissolved in 40
In~60mL acetum；Calper calcium peroxide-humic acid nanocomposite that 1.8~4.0g is prepared then is weighed, is dissolved in 10
~20mL glacial acetic acid is configured to mixed solution, extracts this mixed solution with needle tubing, is slowly dropped into the chitosan solution prepared；And
During chitosan solution is added dropwise, continue to stir and be slowly added dropwise NaOH solution maintenance pH=10, the chitosan material of formation is in mother
In liquid stop 20~for 24 hours, be placed on centrifuge tube put into a centrifuge with a large amount of deionized waters wash 2~4 times extremely neutrality, finally
By composite micro-capsule dry 20 in freeze drier~for 24 hours, pulverize, be sieved to get calper calcium peroxide capsule of nano；
(3) flyash of formula ratio, sepiolite, the wheat straw biologic charcoal through step (2) preparation and through step are weighed respectively
Suddenly the calper calcium peroxide capsule of nano of (3) preparation is uniformly mixed to get the petroleum hydrocarbon contaminated soil renovation agent.
Wherein, composition of raw materials disclosed in Examples 1 to 5 is according to petroleum hydrocarbon contaminated soil reparation made from above-mentioned preparation method
The petroleum degradation rate of agent is referring to table 1, and composition of raw materials disclosed in embodiment 3 and comparative example 1~4 is according to above-mentioned preparation method
Petroleum hydrocarbon contaminated soil renovation agent petroleum degradation rate referring to table 2.
(1) petroleum degradation rate measures
Using gravimetric method, pedotheque is placed in 75 DEG C of baking ovens dry 12 hours to constant weight, pulverizes and sieves, accurately weighs
10g pedotheque is wrapped with qualitative filter paper and is placed in the Soxhlet extractor with plug ground, accurately weighs the weight of 50mL round-bottomed flask
It measures (being accurate to 0.0001g), pours into the chloroform of about 1/2 volume, the hot dipping in 90 DEG C of water-bath, until chloroform color in siphon pipe
It is colourless.The chloroform for being soaked with petroleum in boiling flask is distilled in 90 DEG C again, flask is placed in 100 DEG C of baking ovens dries later,
Claim gross weight, increased weight is residual petroleum quality in pedotheque.The calculation formula of petroleum degradation rate:
Y=(M-W)/M × 100%
In formula, Y is petroleum degradation rate, %；W is residual petroleum quality in pedotheque, g；M is original stone in pedotheque
Oil quality, g.
Pedotheque is taken near Changqing oilfields, then the ratio in every 1000 grams of pedotheques with 50 grams of soil-repairing agent takes
Soil-repairing agent.
(2) pedotheque and renovation agent are placed in the container of a cuboid, pedotheque and renovation agent are laid with about 20-
25 centimeters of thickness, by it is above-mentioned pedotheque and soil-repairing agent are mixed well and kept by the above-mentioned time after, then
Water drenching in container keeps pedotheque and renovation agent wet；Elution in every 10 days is primary；Aqueous solution is by having strainer below container
Water outlet drain.At 1 month, 2 months when, 3 months when survey the content of petroleum in soil respectively；Each comparative example also uses above-mentioned
Processing mode, it is as a result as follows:
The petroleum in pedotheque in 1 Examples 1 to 5 of table is respectively in the degradation rate of following times
The petroleum in pedotheque in 2 embodiment 3 of table and comparative example 1~4 is respectively in the degradation rate of following times
| 1 month | 2 months | 3 months | |
| Embodiment 3 | 25% | 70% | 85% |
| Comparative example 1 | 18% | 42% | 50% |
| Comparative example 2 | 24% | 60% | 74% |
| Comparative example 3 | 22% | 56% | 71% |
| Comparative example 4 | 19% | 14% | 20% |
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (7)
1. a kind of petroleum hydrocarbon contaminated soil renovation agent, which is characterized in that the component and its account for the soil that the renovation agent includes
The parts by weight of renovation agent: 40~55 parts of wheat straw biologic charcoal, 15~30 parts of sepiolite, 15~25 parts of flyash, peroxidating
5~15 parts of calcium capsule of nano.
2. a kind of petroleum hydrocarbon contaminated soil renovation agent according to claim 1, which is characterized in that the renovation agent includes
Component and its parts by weight for accounting for the soil-repairing agent: 45~50 parts of wheat straw biologic charcoal, 15~25 parts of sepiolite, fine coal
15~20 parts, 10~15 parts of calper calcium peroxide capsule of nano of ash.
3. a kind of petroleum hydrocarbon contaminated soil renovation agent according to claim 1, which is characterized in that the renovation agent includes
Component and its parts by weight for accounting for the soil-repairing agent: 48 parts of wheat straw biologic charcoal, 20 parts of sepiolite, 20 parts of flyash,
12 parts of calper calcium peroxide capsule of nano.
4. any a kind of petroleum hydrocarbon contaminated soil renovation agent according to claim 1~3, which is characterized in that the peroxide
Change calcium capsule of nano according to parts by weight, consists of the following components: 5~10 parts of calper calcium peroxide, 1~3 part of humic acid, chitosan
5~10 parts；Wherein calper calcium peroxide is by CaCl2、H2O2, NaOH and ammonium hydroxide be made, and the nano combined material of calper calcium peroxide-humic acid
The partial size of material is 100~200nm.
5. the preparation method of the petroleum hydrocarbon contaminated soil renovation agent as described in claims 1 to 3 is any, which is characterized in that specific
Include the following steps:
(1) it dries, cut after cleaning wheat stalk, then cracked 4~5 hours under the conditions of 300 DEG C~350 DEG C of temperature,
Sieving obtains wheat straw biologic charcoal；
(2) calper calcium peroxide, humic acid, chitosan of formula ratio are weighed, and use chemical coprecipitation prepare partial size for 100~
The calper calcium peroxide of 200nm-humic acid nanocomposite then takes appropriate chitosan to be dissolved in configuration chitosan in acetum molten
Liquid；
(3) weigh calper calcium peroxide made from appropriate step (2)-humic acid nanocomposite be dissolved in glacial acetic acid be configured to mix it is molten
Mixed solution is then slowly dropped into the chitosan solution prepared through step (2) by liquid, is stirred when being added dropwise, and in reactant
NaOH solution maintenance system pH is added dropwise in system between 10~11, to end of reaction, stands overnight, final centrifuge washing, drying
With the calper calcium peroxide capsule of nano to obtain the final product that is sieved；
(4) flyash of formula ratio, sepiolite, the wheat straw biologic charcoal through step (2) preparation and through step (3) are weighed respectively
The calper calcium peroxide capsule of nano of preparation is uniformly mixed to get the petroleum hydrocarbon contaminated soil renovation agent.
6. petroleum hydrocarbon contaminated soil renovation agent or method as claimed in claim 5 preparation as described in claims 1 to 3 is any
The application method of obtained soil-repairing agent, which is characterized in that steps are as follows for the application method:
When in use, first soil-repairing agent is applied into petroleum hydrocarbon contaminated soil, is stirred evenly, then moisturizing is to water capacity
55~65% are maintained at, is placed 25~30 days.
7. a kind of application method of petroleum hydrocarbon contaminated soil renovation agent according to claim 6, which is characterized in that the soil
The dosage of earth renovation agent is the 3~5% of soil quality.
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Cited By (5)
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| CN111957726A (en) * | 2020-07-22 | 2020-11-20 | 杨德敏 | In-situ combined remediation method for petroleum-polluted soil |
| 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 |
| CN113072946A (en) * | 2019-12-17 | 2021-07-06 | 中国石油天然气集团有限公司 | Agent for in-situ remediation of petroleum hydrocarbon contaminated soil, preparation method and application thereof |
| CN114058377A (en) * | 2021-11-11 | 2022-02-18 | 北京恩思沃生物科技有限公司 | Soil remediation agent and soil remediation method |
| CN114772884A (en) * | 2022-05-17 | 2022-07-22 | 大庆中林绿源生物环保有限公司 | Chemical repairing agent for low-oil-content oil sludge |
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| CN113072946A (en) * | 2019-12-17 | 2021-07-06 | 中国石油天然气集团有限公司 | Agent for in-situ remediation of petroleum hydrocarbon contaminated soil, preparation method and application thereof |
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| CN114058377B (en) * | 2021-11-11 | 2022-08-09 | 北京恩思沃生物科技有限公司 | Soil remediation agent and soil remediation method |
| CN114772884A (en) * | 2022-05-17 | 2022-07-22 | 大庆中林绿源生物环保有限公司 | Chemical repairing agent for low-oil-content oil sludge |
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Application publication date: 20191203 |