CN109735344A - It is a kind of for repairing the curing agent and its application method of hydrophobic organic contaminated soil - Google Patents
It is a kind of for repairing the curing agent and its application method of hydrophobic organic contaminated soil Download PDFInfo
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Abstract
The present invention relates to a kind of for repairing the curing agent and its application method of hydrophobic organic contaminated soil, the curing agent be containing oleogel agent, activation humic acid, microbial degradation microbial inoculum mixed aqueous solution.The curing agent also contains thickener；Oleogel agent, activation humic acid, microbial degradation microbial inoculum, thickener and water are (0.2-0.5) by weight in mixed aqueous solution: (1-8): 0.5:(0.5-2): (90-98).Curing agent of the invention passes through the hydrophobic organic pollutant of oleogel agent absorption solidification; activation humic acid with amphipathic characteristic is adsorbed on oleogel surface and forms a large amount of interfaces of oil and gas; accelerate microbial degradation bacterium to the degradation of hydrophobic organic pollutant; also there is good bioaffinity simultaneously; plant growth can be stimulated to a certain extent; soil organic matter content is improved, soil granular structure is promoted to be formed, improves soil hardening.For the environment that protects the fields, the sustainable development for promotion industrialized agriculture provides technical support.
Description
Technical field
The present invention relates to a kind of for repairing the curing agent and its application method of hydrophobic organic contaminated soil, belongs to environment
Protection field.
Background technique
In recent years, with the rapid development of industrial or agricultural, for various pollutants by chemical fertilizer, indiscriminate use of pesticide, industrial and mining enterprises are useless
Gurry the approach such as discharges wantonly and endlessly enters soil, and constantly accumulation in the soil, and soil property decline, function is caused to decline
It moves back, causes the worsening of ecological environment, seriously threaten the safe and healthy of agriculture sustainable development or even the mankind.Wherein with
Organochlorine, petroleum hydrocarbon, polycyclic aromatic hydrocarbon etc. are that the hydrophobic organic pollutant pollution of representative is particularly acute destruction caused by soil.
U.S. EPA priority acccess control register is pointed out: in 1200 polluted soils, 49% place is dirty by hydrophobic organic pollutant
Dye.Currently, in China existing about 1 × 108hm2In arable land, nearly 1/5 is polluted by different degrees of hydrophobic organic pollutant, often
Year causes grain drop in production up to 2.5 × 109Kg, caused by direct economic loss be more than 20,000,000,000 yuan.In face of such severe situation,
Environmentally friendly and efficient method is taken, development is imperative for the research of hydrophobic organic contaminated soil remediation technology.
The research of contaminated soil remediation technology is started in the 1970s, increasing with soil pollution species, phase
The Treatment process of pass is also constantly being updated and is developing, and mainly has China for the administering method of organic pollution of soil at present
Reduction method disclosed in patent document CN101053689A, Ozonation disclosed in Chinese patent literature CN102513345A, in
Animals and plants repairing method disclosed in state patent document CN104438298A vacuumizes disclosed in Chinese patent literature CN203875107U
Elution method disclosed in method, Chinese patent literature CN104307860A, solidification method disclosed in Chinese patent literature CN103881727,
Microwave method disclosed in thermal desorption method, Chinese patent literature CN103551373A disclosed in Chinese patent literature CN103506378A
Deng.Although these methods can to a certain extent repair organic material contaminated soil, all there is respective deficiency.
Solidification and stabilization technology is widely used in hydrophobic organic contaminated soil remediation, and curing agent is adopted more at this stage
Be prepared with the form of portland cement mixing and absorption material, wherein sorptive material with active carbon or organobentonite most
It is universal.However these conventional curing agents, there are many drawbacks, such organic pollutant is only closed by such curing agent, and
It is not decomposed to reduce toxicity, the soil body alkalinity after repairing is higher, is unfavorable for having the micro- of degradation capability to organic pollutant
Biological existence, while alkaline leaching liquid is also easy to produce under condition of raining, change the acid-base balance of surrounding soil and water body, it is raw to periphery
Object has an adverse effect.
In conclusion repairing the drawbacks described above that hydrophobic organic pollutant combined pollution soil has for existing curing agent, seek
A kind of can solidify is looked for stablize and can decompose simultaneously hydrophobic organic pollutant, curing efficiency is high, and low in cost, performance is stablized, material
Novel curing agent from a wealth of sources and environmental-friendly becomes the focus of insider's growing interest.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provide it is a kind of can adsorb, solidify simultaneously, decompose hydrophobic organic pollutant,
Safe and efficient, strong applicability and dysgenic curing agent will not be caused to soil.The curing agent can adsorb hydrophobic in soil
Organic pollutant, and oil-soluble gel is formed with organic pollutant, it is enriched with fixed organic pollutant, forms a large amount of interfaces of oil and gas,
Accelerate microbial degradation bacterium to the degradation of hydrophobic organic pollutant.
The present invention also provides a kind of for repairing the application method of the curing agent of hydrophobic organic contaminated soil.
Technical scheme is as follows:
It is a kind of for repairing the curing agent of hydrophobic organic contaminated soil, the curing agent is to contain oleogel agent, work
Change the mixed aqueous solution of humic acid and microbial degradation microbial inoculum；
The oleogel agent be 12- hydroxy stearic acid, N- lauroyl-Pidolidone, D-alanine, l-Alanine,
One of diethylphosphate aluminium or any two or more combination；The activation humic acid is after being activated using sulfonation method
Humic acid, water-soluble >=97%；The microbial degradation microbial inoculum includes pseudomonad, mycobacteria, in the pathogen of Botrytis cinerea
One kind or any two or more combination.
Preferred according to the present invention, the curing agent also contains thickener；It is further preferred that the thickener is
Sodium carboxymethylcellulose.
It is preferred according to the present invention, the curing agent be oleogel agent, activation humic acid, microbial degradation microbial inoculum,
Thickener and water are (0.2-0.5): (1-8): 0.5:(0.5-2 by weight): the mixed solution of (90-98).
It is preferred according to the present invention, the hydrophobic organic pollutant in the hydrophobic organic contaminated soil be benzene, toluene,
Any combination of one or more of styrene, dimethylbenzene, naphthalene, phenanthrene, pyrene, BaP.
For repairing the preparation method of the curing agent of hydrophobic organic contaminated soil, oleogel agent, activation humic acid are taken
It is added to the water and is uniformly mixed, thickener is then added and is uniformly mixed, is eventually adding microbial degradation microbial inoculum to get for repairing
The curing agent of multiple hydrophobic organic contaminated soil.
The method for being carried out repairing hydrophobic organic contaminated soil using curing agent, is comprised the following steps that
(1) first by above-mentioned curing agent according to 1-3 meters of spacing distance, hydrophobic organic Polluted Soil is injected into using fertilization gun
In earth, injection depth is 0.6~0.8m；
(2) then the curing agent of injection is applied in hydrophobic organic contaminated soil surface layer using the method that pouring is applied in punching；
(3) water seasoning that 21~35 days by a definite date are finally carried out to repairing polluted soil region, can repair described hydrophobic
Organic material contaminated soil.
Preferred according to the present invention, in step (1), the injection rate of the curing agent is that hydrophobic organic contaminated soil is maximum
The 30-40% of water-holding capacity.
Preferred according to the present invention, in step (2), the sowing amount of the curing agent is that hydrophobic organic contaminated soil is maximum
The 50-70% of water-holding capacity.
It is preferred according to the present invention, in step (3), the time of the best water seasoning to repairing polluted soil region
It is 28 days.
Unless otherwise indicated, " % " according to the present invention is weight percentage.Raw material used in the present invention is not special
Not mentionleting alone bright is conventional commercial.
In use, the additional amount of curing agent of the present invention changes according to different hydrophobic organic pollutant pollution levels, soil
Hydrophobic organic pollutant pollution level is higher, and the additional amount of curing agent is higher, liquid-solid ratio the dredging with soil of curing agent and soil
Water organic pollutant pollution level increases.
Compared with prior art, the invention has the following advantages that
1, the critical materials of curing agent are oleogel agent in the present invention, contain a large amount of amido bonds, meeting in oleogel agent
It forms a large amount of intermolecular hydrogen bondings and forms fibrilla aggregates, after touching hydrophobic organic pollutant in the soil, model moral can be relied on
Hua Li makes fiber aggregate be combined with each other and three dimensional stress, forms oil-soluble gel with hydrophobic organic pollutant, the gel of formation is again
Hydrophobic organic pollutant can be further adsorbed, enrichment fixation is carried out to hydrophobic organic pollutant.Activation humic acid in curing agent
It with surface-active, can be adsorbed on around oil-soluble gel, form gas-solid interface, the enzyme of microbial bacteria degradation hydrophobic organic
Can neither it is water-soluble can not oil it is molten, but have very high activity between gas-solid interface, therefore the increase of gas-solid interface can be advantageous
Microbial inoculum degradation is degraded by microorganisms to the degradation of hydrophobic organic pollutant in hydrophobic organic.
2, after repairing using curing agent of the invention, oleogel agent, activation humic acid and thickening in the soil is remained
Material is degradable, will not generate secondary pollution to soil.Curing agent in the present invention also has good bioaffinity, energy
Plant growth is stimulated to a certain extent, improves soil organic matter content, soil granular structure is promoted to be formed, and improves soil plate
Knot.The case where wherein activation humic acid can improve original soil hardening after being manured into soil as organic carbon source, increasing soil has
The items physical and chemical index such as machine matter, porosity, promotes absorption of the plant to N P and K in soil and lightweight microelement, to reach
Solidification is degraded hydrophobic organic pollutant, and Ensuring Food Safety while increases the double effects that soil fertility increases per mu yield.Simultaneously
For the environment that protects the fields, the sustainable development for promotion industrialized agriculture provides technical support.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, but is not limited only to this.
It is raw materials used in embodiment to be described as follows:
12- hydroxy stearic acid, N- lauroyl-Pidolidone, D-alanine, l-Alanine, diethylphosphate aluminium: fine grained
Shape, Sinopharm Chemical Reagent Co., Ltd. is on sale, content >=99%,
Humic acid: brown-black powder is activated, activation method uses sulfonation method, the big limited public affairs of ecological engineering group share of Nintaus
Department provides, content >=99%,
Microbial degradation microbial inoculum (including pseudomonad, mycobacteria, the pathogen of Botrytis cinerea): Jiangxi Province's providence biotechnology is opened
It is on sale to send out Co., Ltd,
Sodium carboxymethylcellulose: powdered, Jinan Hai Pu Chemical Co., Ltd. is on sale.
Hydrophobic organic contaminated soil in embodiment picks up from Jinan City, Shandong Province steel factory surrounding soil sample,
100m2, detected according to method specified in " solid waste Leaching leaching method sulfonitric method " (HJ/T299-2007)
The content of hydrophobic organic in soil.Monitoring result is the content range of benzene between ND~1.30mg/kg, and average value is
0.43mg/kg, cultural residential estate standard value are 0.92mg/kg, and maximum times of ultra standard is 1.413；The content range of toluene exists
Between ND~130mg/kg, cultural residential estate standard value is that 1200mg/kg is not exceeded；The content range of styrene ND~
145mg/kg, cultural residential estate standard value are that 1290mg/kg is not exceeded；The content range of dimethylbenzene ND~667mg/kg it
Between, cultural residential estate standard value is 554mg/kg, and maximum times of ultra standard is 1.413；The content range of naphthalene is in ND~146mg/
Between kg, cultural residential estate standard value is 23mg/kg, and maximum times of ultra standard is 6.35；Luxuriant and rich with fragrance content range is in ND~67.1mg/
Between kg, cultural residential estate standard value is 5mg/kg, and maximum times of ultra standard is 13.42；Pyrene content range is in ND~51.4mg/
Between kg, cultural residential estate standard value is 50mg/kg, and maximum times of ultra standard is 1.028；BaP content range ND~
Between 24.3mg/kg, cultural residential estate standard value is 0.52mg/kg, and maximum times of ultra standard is 46.73.
Embodiment 1:
It is a kind of for repairing the curing agent of hydrophobic organic contaminated soil, the curing agent is that oleogel agent, activation are rotten
Phytic acid, microbial degradation microbial inoculum, thickener and water are the mixed solution of 0.2:1:0.5:1.3:97 by weight.Wherein oleogel
Agent is by 12- hydroxy stearic acid and N- lauroyl-Pidolidone be in mass ratio 1:1 combination；Microbial degradation microbial inoculum is
Pseudomonad.
It takes oleogel agent, activation humic acid to be added to the water and be uniformly mixed, thickener is then added and is uniformly mixed,
Microbial degradation microbial inoculum is eventually adding to get the curing agent for repairing hydrophobic organic contaminated soil.
The method for being carried out repairing hydrophobic organic contaminated soil using curing agent, is comprised the following steps that
(1) first by above-mentioned curing agent according to 2 meters of spacing distance, hydrophobic organic contaminated soil is injected into using fertilization gun
Interior, injection depth is 0.6m, and injection rate is the 30% of hydrophobic organic contaminated soil maximum water-holding capacity；
(2) curing agent is then applied by hydrophobic organic contaminated soil surface layer using the method that pouring is applied in punching, curing agent
Sowing amount is the 50% of hydrophobic organic contaminated soil maximum water-holding capacity；
(3) water seasoning that 28 days by a definite date are finally carried out to repairing polluted soil region can be repaired described hydrophobic organic
Object contaminated soil.
To benzene, the toluene, styrene, two in the hydrophobic organic contaminated soil after using above-mentioned curing agent to repair and conserve
Toluene, naphthalene, phenanthrene, pyrene, BaP concentration be measured, discovery processing after benzene, toluene, styrene, dimethylbenzene, naphthalene, phenanthrene, pyrene,
The mean concentration of BaP reduces 60%, 63%, 50%, 48%, 59%, 73%, 68%, 71% respectively.
Embodiment 2
It is a kind of for repairing the curing agent of hydrophobic organic contaminated soil, the curing agent is that oleogel agent, activation are rotten
Phytic acid, microbial degradation microbial inoculum, thickener and water are the mixed solution of 0.3:2.4:0.5:1.8:95 by weight.Wherein oil is solidifying
Gelatinizing agent is by D-alanine and l-Alanine be in mass ratio 2:1 combination；Microbial degradation microbial inoculum is mycobacterium.
It takes oleogel agent, activation humic acid to be added to the water and be uniformly mixed, thickener is then added and is uniformly mixed,
It is eventually adding the curing agent that microbial degradation microbial inoculum is used to repair hydrophobic organic contaminated soil to obtain the final product.
The method for being carried out repairing hydrophobic organic contaminated soil using curing agent, is comprised the following steps that
(1) first by above-mentioned curing agent according to 2 meters of spacing distance, hydrophobic organic contaminated soil is injected into using fertilization gun
Interior, injection depth is 0.7m, and injection rate is the 40% of hydrophobic organic contaminated soil maximum water-holding capacity；
(2) curing agent is then applied by hydrophobic organic contaminated soil surface layer using the method that pouring is applied in punching, curing agent
Sowing amount is the 60% of hydrophobic organic contaminated soil maximum water-holding capacity；
(3) water seasoning that 28 days by a definite date are finally carried out to repairing polluted soil region can be repaired described hydrophobic organic
Object contaminated soil.
To benzene, the toluene, styrene, two in the hydrophobic organic contaminated soil after using above-mentioned curing agent to repair and conserve
Toluene, naphthalene, phenanthrene, pyrene, BaP concentration be measured, discovery processing after benzene, toluene, styrene, dimethylbenzene, naphthalene, phenanthrene, pyrene,
The mean concentration of BaP reduces 58%, 61%, 64%, 61%, 71%, 75%, 73%, 81% respectively.
Embodiment 3
It is a kind of for repairing the curing agent of hydrophobic organic contaminated soil, the curing agent is that oleogel agent, activation are rotten
Phytic acid, microbial degradation microbial inoculum, thickener and water are the mixed solution of 0.5:7:0.5:2:90 by weight.Wherein oil gelation
Agent is by N- lauroyl-Pidolidone and diethylphosphate aluminium be in mass ratio 1:3 combination；Microbial degradation microbial inoculum is grey Portugal
Grape spore mould.
It takes oleogel agent, activation humic acid to be added to the water to be uniformly mixed, thickener is then added and is uniformly mixed, most
The curing agent that microbial degradation microbial inoculum is used to repair hydrophobic organic contaminated soil to obtain the final product is added afterwards.
The method for being carried out repairing hydrophobic organic contaminated soil using curing agent, is comprised the following steps that
(1) first by above-mentioned curing agent according to 2 meters of spacing distance, hydrophobic organic contaminated soil is injected into using fertilization gun
Interior, injection depth is 0.8m, and injection rate is the 40% of hydrophobic organic contaminated soil maximum water-holding capacity；
(2) curing agent is then applied by hydrophobic organic contaminated soil surface layer using the method that pouring is applied in punching, curing agent
Sowing amount is the 70% of hydrophobic organic contaminated soil maximum water-holding capacity；
(3) water seasoning that 28 days by a definite date are finally carried out to repairing polluted soil region can be repaired described hydrophobic organic
Object contaminated soil.
To benzene, the toluene, styrene, two in the hydrophobic organic contaminated soil after using above-mentioned curing agent to repair and conserve
Toluene, naphthalene, phenanthrene, pyrene, BaP concentration be measured, discovery processing after benzene, toluene, styrene, dimethylbenzene, naphthalene, phenanthrene, pyrene,
The mean concentration of BaP reduces 77%, 75%, 72%, 64%, 69%, 83%, 88%, 93% respectively.
Comparative example 1:
It is a kind of for repairing the curing agent of hydrophobic organic contaminated soil, the curing agent is activation humic acid, microorganism
Degradation bacterial agent, thickener and water are the mixed solution of 1:0.7:1.3:97 by weight.Wherein microbial degradation microbial inoculum is grey Portugal
Grape spore bacterium.
It takes activation humic acid to be added to the water to be uniformly mixed, thickener is then added and is uniformly mixed, is eventually adding micro-
Biodegradable microbial inoculum is to get the curing agent for repairing hydrophobic organic contaminated soil.
The method for being carried out repairing hydrophobic organic contaminated soil using curing agent, is comprised the following steps that
(1) first by above-mentioned curing agent according to 2 meters of spacing distance, hydrophobic organic contaminated soil is injected into using fertilization gun
Interior, injection depth is 0.6m, and injection rate is the 30% of hydrophobic organic contaminated soil maximum water-holding capacity；
(2) curing agent is then applied by hydrophobic organic contaminated soil surface layer using the method that pouring is applied in punching, curing agent
Sowing amount is the 50% of hydrophobic organic contaminated soil maximum water-holding capacity；
(3) water seasoning that 28 days by a definite date are finally carried out to repairing polluted soil region can be repaired described hydrophobic organic
Object contaminated soil.
To benzene, the toluene, styrene, two in the hydrophobic organic contaminated soil after using above-mentioned curing agent to repair and conserve
Toluene, naphthalene, phenanthrene, pyrene, BaP concentration be measured, discovery processing after benzene, toluene, styrene, dimethylbenzene, naphthalene, phenanthrene, pyrene,
The mean concentration of BaP reduces 28%, 33%, 24%, 17%, 29%, 48%, 37%, 43% respectively.
Comparative example 2:
It is a kind of for repairing the curing agent of hydrophobic organic contaminated soil, the curing agent is oleogel agent, microorganism
Degradation bacterial agent and thickener and water are the mixed solution of 0.2:0.5:1.3:98 by weight.Wherein oleogel agent is by 12-
Hydroxy stearic acid and N- lauroyl-Pidolidone are the combination of 1:1 in mass ratio；Microbial degradation microbial inoculum is false single-cell bacteria.
It takes oleogel agent to be added to the water to be uniformly mixed, thickener is then added and is uniformly mixed, is eventually adding micro-
Biodegradable microbial inoculum is used to repair the curing agent of hydrophobic organic contaminated soil to obtain the final product.
The method for being carried out repairing hydrophobic organic contaminated soil using curing agent, is comprised the following steps that
(1) first by above-mentioned curing agent according to 2 meters of spacing distance, hydrophobic organic contaminated soil is injected into using fertilization gun
Interior, injection depth is 0.6m, and injection rate is the 30% of hydrophobic organic contaminated soil maximum water-holding capacity；
(2) curing agent is then applied by hydrophobic organic contaminated soil surface layer using the method that pouring is applied in punching, curing agent
Sowing amount is the 50% of hydrophobic organic contaminated soil maximum water-holding capacity；
(3) water seasoning that 28 days by a definite date are finally carried out to repairing polluted soil region can be repaired described hydrophobic organic
Object contaminated soil.
To benzene, the toluene, styrene, two in the hydrophobic organic contaminated soil after using above-mentioned curing agent to repair and conserve
Toluene, naphthalene, phenanthrene, pyrene, BaP concentration be measured, discovery processing after benzene, toluene, styrene, dimethylbenzene, naphthalene, phenanthrene, pyrene,
The mean concentration of BaP reduces 33%, 38,25,38%, 39%, 43%, 38%, 41% respectively.
Comparative example 3:
It is a kind of for repairing the curing agent of hydrophobic organic contaminated soil, the curing agent is that oleogel agent, activation are rotten
Phytic acid and thickener and water are the mixed solution of 0.2:1:1.3:97.5 by weight.Wherein oleogel agent is by 12- hydroxyl
Stearic acid and N- lauroyl-Pidolidone are the combination of 1:1 in mass ratio.
It takes oleogel agent, activation humic acid to be added to the water and be uniformly mixed, thickener is then added and is uniformly mixed,
Up to the curing agent for repairing hydrophobic organic contaminated soil.
The method for being carried out repairing hydrophobic organic contaminated soil using curing agent, is comprised the following steps that
(1) first by above-mentioned curing agent according to 2 meters of spacing distance, hydrophobic organic contaminated soil is injected into using fertilization gun
Interior, injection depth is 0.6m, and injection rate is the 30% of hydrophobic organic contaminated soil maximum water-holding capacity；
(2) curing agent is then applied by hydrophobic organic contaminated soil surface layer using the method that pouring is applied in punching, curing agent
Sowing amount is the 50% of hydrophobic organic contaminated soil maximum water-holding capacity；
(3) water seasoning that 28 days by a definite date are finally carried out to repairing polluted soil region can be repaired described hydrophobic organic
Object contaminated soil.
To benzene, the toluene, styrene, two in the hydrophobic organic contaminated soil after using above-mentioned curing agent to repair and conserve
Toluene, naphthalene, phenanthrene, pyrene, BaP concentration be measured, discovery processing after benzene, toluene, styrene, dimethylbenzene, naphthalene, phenanthrene, pyrene,
The mean concentration of BaP reduces 37%, 41%, 34%, 43%, 40%, 46%, 39%, 35% respectively.
Claims (9)
1. a kind of for repairing the curing agent of hydrophobic organic contaminated soil, the curing agent is containing oleogel agent, activation
The mixed aqueous solution of humic acid and microbial degradation microbial inoculum；
The oleogel agent is 12- hydroxy stearic acid, N- lauroyl-Pidolidone, D-alanine, l-Alanine, diethyl
One of base aluminum phosphate or any two or more combination；The activation humic acid is the rotten plant after being activated using sulfonation method
Acid, water-soluble >=97%；The microbial degradation microbial inoculum includes pseudomonad, mycobacteria, one in the pathogen of Botrytis cinerea
Kind or any two or more combination.
2. according to claim 1 for repairing the curing agent of hydrophobic organic contaminated soil, which is characterized in that described
Curing agent also contains thickener；It is further preferred that the thickener is sodium carboxymethylcellulose.
3. according to claim 1 for repairing the curing agent of hydrophobic organic contaminated soil, which is characterized in that described solid
Agent is oleogel agent, activation humic acid, microbial degradation microbial inoculum, thickener and water, is by weight (0.2-0.5): (1-
8): 0.5:(0.5-2): the mixed solution of (90-98).
4. according to claim 1 for repairing the curing agent of hydrophobic organic contaminated soil, which is characterized in that described
Hydrophobic organic pollutant in hydrophobic organic contaminated soil is benzene, in toluene, styrene, dimethylbenzene, naphthalene, phenanthrene, pyrene, BaP
One or more kinds of any combination.
5. according to claim 1 for repairing the preparation method of the curing agent of hydrophobic organic contaminated soil, feature
It is, takes oleogel agent, activation humic acid, be added to the water and be uniformly mixed, thickener is then added and is uniformly mixed, most
Microbial degradation microbial inoculum is added afterwards to get the curing agent for repairing hydrophobic organic contaminated soil.
6. the method for being carried out repairing hydrophobic organic contaminated soil using curing agent, is comprised the following steps that
(1) first by above-mentioned curing agent according to 1-3 meters of spacing distance, hydrophobic organic contaminated soil is injected into using fertilization gun
Interior, injection depth is 0.6~0.8m；
(2) then the curing agent of injection is applied in hydrophobic organic contaminated soil surface layer using the method that pouring is applied in punching；
(3) water seasoning that 21~35 days by a definite date are finally carried out to repairing polluted soil region can be repaired described hydrophobic organic
Object contaminated soil.
7. the method according to claim 6 for being carried out repairing hydrophobic organic contaminated soil using curing agent, feature are existed
In in step (1), the injection rate of the curing agent is the 30-40% of hydrophobic organic contaminated soil maximum water-holding capacity.
8. the method according to claim 6 for being carried out repairing hydrophobic organic contaminated soil using curing agent, feature are existed
In in step (2), the sowing amount of the curing agent is the 50-70% of hydrophobic organic contaminated soil maximum water-holding capacity.
9. the method according to claim 6 for being carried out repairing hydrophobic organic contaminated soil using curing agent, feature are existed
In in step (3), the time of the best water seasoning to repairing polluted soil region is 28 days.
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| CN116251833A (en) * | 2023-04-18 | 2023-06-13 | 中国石油大学(北京) | Microbial restoration agent and restoration method for petroleum-polluted soil |
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