CN107838187A - The method for repairing polycyclic aromatic hydrocarbon pollution - Google Patents
The method for repairing polycyclic aromatic hydrocarbon pollution Download PDFInfo
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- CN107838187A CN107838187A CN201710900942.9A CN201710900942A CN107838187A CN 107838187 A CN107838187 A CN 107838187A CN 201710900942 A CN201710900942 A CN 201710900942A CN 107838187 A CN107838187 A CN 107838187A
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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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- 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
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
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Abstract
The present invention discloses a kind of method for repairing polycyclic aromatic hydrocarbon pollution.Comprise the following steps that (1) is eluted using chemical modification cyclodextrin eluent to contaminated soil；(2) degradation bacteria is prepared, and after the elution that the degradation bacteria prepared is seeded in step (1) according to predetermined ratio in soil, while the charcoal of predetermined quality is added into soil after elution, obtain mixture；(3) pH of mixture and the water content of mixture in regulating step (2), while lucifuge culture is carried out at a predetermined temperature, contaminated soil is repaired.The present invention to soil by eluting, and degradation bacteria and charcoal are added into the soil after elution, PAHs contaminated soils can be realized and more thoroughly repair and administer, ecological, environmental protective, do not produce noxious pollutant, can solve the handling problems of biomass castoff simultaneously, effectively improve structure of soil microbial community and environmental quality.
Description
Technical field
The present invention relates to a kind of method for repairing polycyclic aromatic hydrocarbon pollution, belong to contaminated soil Treatment process field
Background technology
Polycyclic aromatic hydrocarbon (Polycyclic aromatic hydrocarbon, PAHs) refers to two or more benzene
Ring a kind of organic compound that (straight-chain, horn shape and string-like arrangement) is combined together in the form of condensed ring, in the environment generally
In the presence of polycyclic aromatic hydrocarbon has potential teratogenesis, carcinogenicity and genetoxic.So far it has been found that carcinogenicity PAHs and its derivative
Thing is more than 400 kinds, wherein there is 16 kinds of PAHs that priority acccess control is classified as by Environmental Protection Agency.PAHs class compounds have hydrophobicity and
Refractory organicses, plus sustained release of the industrial production into environment, therefore it causes prolonged stay in the environment, considerably beyond
The self-purification capacity of environment.
With widely using for industrial expansion and fossil fuel, PAHs mainly by atmosphere dried wet deposition, dirty fill and not
Approach is rationally utilized etc., enters soil ecosystem, soil is turned into PAHs major storages storehouse in environment.European and American developed countries
Research starting to PAHs in soil is more early.Jones etc. carries out analysis hair to the PHAs in the topsoil of British Wales area
Existing, the PAHs contents in this area's soil are 108~54500ug/kg.Since the 1970s, developed country has endeavoured
In the discharge capacity for reducing PAHs.And Past 30 Years are exactly the period of China's rapid economic development, the fossil fuel such as oil and coal
Consumption constantly increase and more and more biomass burning, cause the PAHs discharged into environment to increase year by year.In recent years,
The domestic research to P in soil AHs pollutions is also increasingly paid attention to, and the national Soil Pollution Investigation publication of 2014 is shown, I
The total point position exceeding standard rate of state's soil is 16.1%, and wherein PAHs point position exceeding standard rate accounts for 1.4%.It is estimated that China's polycyclic aromatic hydrocarbon
Total annual emissions be higher than 25000 tons, the kg/km of city average emission 1582, or even part rural area discharge up to 479kg/
km2, and based on the PAHs of 4~6 ring HMWs.Effectively repair the shortage of means so that administer with repairing HMW
PAHs contaminated soils turn into important environmental problem.
The recovery technique of polycyclic aromatic hydrocarbon pollution mainly includes peripheral doses, chemical remediation, biological prosthetic etc..Physics is repaiied
Recovering technology is by gongwu measure mostly, pollutant is separated, dissolved, gasify etc. and handle, and chemical remediation then passes through
Chemical reaction causes pollutant to the relatively low or more stable Forms Transformation of toxicity, to reduce the toxicity of pollutant.Bioremediation technology
Using the enrichment of plant, microorganism or animal to pollutant or metabolic capability, so as to convert or degrade the pollutant in soil
For the material of the five poisonous creatures: scorpion, viper, centipede, house lizard, toad, so as to realize removal or the degraded purpose to pollutant.At present, in universal recovery technique, although thing
Reason is repaired and chemical remediation technology has necessarily from effect, but the property such as their physics to soil, chemistry, biology has one
Fixed destructiveness, and operating cost is also of a relatively high, therefore be not used widely.Comparatively, biological prosthetic cost compared with
It is the advantages that low, in the absence of secondary pollution, more and more interested to researchers.Microbial degradation process is gone as PAHs in environment
One of main path removed, more and more be applied to contaminated soil remediation in, common restorative procedure have biostimulation and
It is biological reinforced.Gong Zong waits research to find by force, and PAHs metabolic intermediates such as salicylic acid etc. is added into contaminated soil, can be improved micro-
Bioenzyme activity, promote the progress of pyrene co -metabolic degradation process.Strong wait of hair obtains one plant by being separated in polycyclic aromatic hydrocarbon pollution
The bacterial strain that can be grown using Bap as sole carbon source --- ammonia pair coccus (Paracoccus aminovorans) is bitten, sieve can be utilized
The specific PAHs degradation bacterias selected or fungi are seeded in contaminated soil, and bioaugmentation and biodegradation is carried out to PAHs.It is specific high
The acquisition of the high PAHs degradation bacterias of degradation bacteria, especially molecular weight is imitated, is realize PAHs contaminated soil microorganism remediations important
One of approach, but PAHs is easily attached to the particle surface of soil, reduces its solvability in water, and then slow down degraded
Effect of the bacterium to PAHs, reduce the repairing effect of contaminated soil.
The content of the invention
In view of the above-mentioned problems, the method that the present invention provides a kind of good reparation polycyclic aromatic hydrocarbon pollution of repairing effect.
To reach above-mentioned purpose, the present invention provides a kind of method for repairing polycyclic aromatic hydrocarbon pollution, comprised the following steps：
(1) contaminated soil is eluted using chemical modification cyclodextrin eluent；
(2) degradation bacteria, and soil after the elution that the degradation bacteria prepared is seeded in step (1) according to predetermined ratio are prepared
In earth, at the same into soil after elution add predetermined quality charcoal, obtain mixture；
(3) pH of mixture and the water content of mixture in regulating step (2), while lucifuge is carried out at a predetermined temperature
Culture, is repaired to contaminated soil.
Further, in the step (1), also include before being eluted to contaminated soil：Remove in contaminated soil
Impurity simultaneously air-dries to soil；The soil after doing will be divided to pulverize and sieved, obtain the Polluted Soil that particle diameter is 0.01~10mm
Earth.
Further, it is to the elution process of contaminated soil in the step (1)：By chemical modification cyclodextrin eluent with
Contaminated soil is 5 according to mass ratio:1~8:1 ratio mixing, stir, obtain the first mixture；First mixture is risen
Oscillation treatment is strengthened in temperature vibration and excusing from death；Centrifugal treating is carried out to the first mixture after concussion again, supernatant is removed and is washed
Soil after de-.
Further, in the step (1), the concentration range of the chemical modification cyclodextrin is 100~300g/L；
The chemical modification cyclodextrin includes methyl~β~cyclodextrin, hydroxypropyl~β~cyclodextrin, sulphur ethyl~β~ring
Any one or a few in dextrin and acetyl group~β~cyclodextrin.
Further, the step of carrying out preparation degradation bacteria in the step (2) is, by Na2SO4, villaumite, potassium dihydrogen phosphate,
Any several mixing in yeast, deionized water, trace element, obtain 100~150ml of microbiological culture media of predetermined salinity；
5~8g oil-polluted soils and concentration are added to above-mentioned culture for 30~50g/L 100~200ul external source polycyclic aromatic hydrocarbon
In base, cultivated 10~15 days in constant temperature oscillator, obtain 5~10ml supernatants and be added to pass in fresh culture and expand
Increase, be so enriched with 8~10 times repeatedly, obtain degradation bacteria.
Further, in the step (2), degradation bacteria is inoculated into after elution in soil with 3~8% (v/m) ratios；Institute
The ratio for stating charcoal and soil after elution is 1.0%~5% (m/m).
Further, the pH scopes of mixture are 6.5~7.5 in the step (3)；The water content of mixture is 60%,
Temperature range during lucifuge is 25 DEG C~35 DEG C；Incubation time is 10~14 weeks.
Further, the villaumite include sodium chloride, magnesium chloride, potassium chloride, calcium chloride, in ammonium chloride any one or
It is several,
Further, the salinity of the microbiological culture media is 0.5%~2.5%.
Further, the preparation method of described charcoal is：Obtain rice straw, maize straw, bamboo chip, peanut straw
In one or more as raw material, the raw material is placed in 400 DEG C~600 DEG C of tube furnace under the protection of nitrogen and carried out
Pyrolysis, pyrolysis time are 3h~5h, the charcoal obtained after cool drying.
Further, when heating concussion processing is carried out to the first mixture, temperature range is 25 DEG C~50 DEG C, and rotating speed is
100~150rpm, time are 1~2h.
Further, when ultrasound-enhanced concussion is carried out to the first mixture and handling, power is 20~40kHz, temperature 25
DEG C~50 DEG C, the ultrasonic vibration time is 0.5~1h.
Further, when to the first mixture centrifugal treating, rotating speed is 3000~40000rpm, centrifugation time 0.2
~0.5h.The method that the present invention repairs polycyclic aromatic hydrocarbon pollution can be glimmering to pyrene, benzo [a] pyrene, benzo [a] anthracene, benzo [b]
Anthracene, benzo [k] fluoranthene, dibenzo [a, h] anthracene, the contaminated soil of benzo [g, h, i] are repaired well.By to soil
Eluted, and degradation bacteria and charcoal are added into the soil after elution, PAHs contaminated soils can be realized more thoroughly
Repair and administer, ecological, environmental protective, do not produce noxious pollutant, while can solve the handling problems of biomass castoff, effectively
Improve structure of soil microbial community and environmental quality.
Brief description of the drawings
Fig. 1 is block diagram of the hydroxypropyl~β~cyclodextrin to different PAHs clearance in contaminated soil；
Fig. 2 is block diagram of the methyl~β~cyclodextrin to different PAHs clearance in contaminated soil；
Under the conditions of Fig. 3 different disposals, the line chart of the degradation characteristic change of pyrene in soil
Under the conditions of Fig. 4 different disposals, the line chart of the degradation characteristic change of benzo [a] pyrene in soil.
Embodiment
With reference to Figure of description, the present invention will be further described.
Embodiment 1
In the present embodiment, there is provided a kind of method for repairing polycyclic aromatic hydrocarbon pollution, comprise the following steps,
(1) contaminated soil is eluted using chemical modification cyclodextrin eluent, be repeated several times, it is native after being eluted
Earth；
(2) degradation bacteria, and soil after the elution that the degradation bacteria prepared is seeded in step (1) according to predetermined ratio are prepared
In earth, at the same into soil after elution add predetermined quality charcoal, obtain mixture；
(3) pH of mixture and the water content of mixture in regulating step (2), while lucifuge is carried out at a predetermined temperature
Culture, is repaired to contaminated soil.
Embodiment 2
As the concrete scheme of embodiment 1, the pollution soil sample 10g after collection sieving processing is weighed in 200ml reaction bulbs
In, 100g/L hydroxypropyl-β-cyclodextrin solution 50ml is added in reaction bulb, as constant temperature oscillation shaking table, with 100rpm
After 25 DEG C of vibration 0.5h, 25kHz sonic oscillations 0.5h.Reaction terminates, by above-mentioned system on 2500rpm centrifugation 0.5h, removal
Clear liquid, the above-mentioned elution process of repetition 2 times, soil after being eluted.Using hydroxypropyl-β-cyclodextrin to Polluted Soil in the present embodiment
Earth is eluted, as shown in figure 1, the elution removal efficiency of 4 kinds of PAHs materials of A, B, C and D respectively reaches in contaminated soil
83.5%th, 78.3%, 66.5% and 64.6%.
Weigh Na2SO40.5g, villaumite (NaCl 8.0g, KCl 0.5g, CaCl2 0.2g,MgCl2·6H2O 6.0g), phosphorus
Acid dihydride potassium 0.1g, yeast 0.5g, deionized water 1000ml, micro- 1ml, prepare the microbiological culture media that salinity is 1%
100ml；5g oil-polluted soils and 100ul external sources polycyclic aromatic hydrocarbon (30g/L) are added in above-mentioned culture medium, 25 DEG C of constant temperature shake
Swing after 1.5 weeks are cultivated in device, 5ml supernatants are added in fresh culture and pass on amplification, be so enriched with 8 times repeatedly, obtain
Degradation bacteria.
Soil after degradation bacteria and charcoal are repaired added to elution, carries out degraded removal, process is to pyrene in soil：To
After chemical modification cyclodextrin eluting in soil, the degradation bacteria of institute's enrichment isolation in the present invention is inoculated with 3% (v/m) ratio,
And with 1.5% (m/m) ratio add rice straw biological carbon materials, be thoroughly mixed uniformly after, regulation soil pH conditions to
6.5, and 60% field moisture is kept, and the aerobic culture of lucifuge 10 weeks at 25 DEG C, the content of monitoring analysis pyrene different times
Change, as shown in Figure 3, the results showed that, the addition of rice straw charcoal, be advantageous to microorganism to pyrene in soil after elution processing
Degraded, after culture 10 weeks, control treatment (CK), efficient degrading bacteria processing (M), efficient degrading bacteria+charcoal processing (M+B)
In, the degraded clearance of pyrene has respectively reached 23.8%, 29.2% and 33.3%.
Embodiment 3
The present embodiment and the difference of embodiment 2 are, using methyl-B-cyclodextrin to contaminated soil in the present embodiment
Middle PAHs carries out elution removal；
Detailed process is：The pollution soil sample 15g after collection sieving processing is weighed in 300ml reaction bulbs, adds 200g/L
Methyl-B-cyclodextrin solution 80ml in reaction bulb, as constant temperature oscillation shaking table, after the lower 40 DEG C of vibrations 1h of 150rpm,
35kHz sonic oscillations 1h.Reaction terminates, and above-mentioned system is centrifuged into 0.5h in 3500rpm, supernatant is removed, repeats above-mentioned elution
Process 3 times, the clearance of all kinds of PAHs materials is analyzed, as shown in Figure 2, the results showed that, on this condition, methyl-B-cyclodextrin
80.2%, 72.5%, 76.5% and 68.3% is respectively reached to the elution removal efficiency of 4 kinds of PAHs materials of A, B, C and D.
Embodiment 4
The present embodiment and the difference of embodiment 2 be, degradation bacteria and the degradation bacteria in embodiment 2 in the present embodiment
Preparation method is different, and the preparation method of degradation bacteria is in the present embodiment：Weigh Na2SO40.6g, villaumite (NaCl 12.0g, KCl
0.6g,CaCl2 0.3g,MgCl2·6H2O 9.0g), it is potassium dihydrogen phosphate 0.25g, yeast 0.8g, deionized water 1000ml, micro
Element 2ml, prepare the microbiological culture media 150ml that salinity is 3%；By 8g oil-polluted soils and 200ul external source polycyclic aromatic hydrocarbons
(50g/L) is added in above-mentioned culture medium, and after cultivating 2 weeks in 25 DEG C of constant temperature oscillators, 10ml supernatants are added into fresh training
Support and amplification is passed in base, be so enriched with 10 times repeatedly, obtain high efficient strain colony.
Embodiment 5
As the concrete scheme of embodiment 1, utilized in the present embodiment after repairing degradation bacteria and charcoal added to elution
Soil, degraded removal is carried out to benzo in soil [a] pyrene, detailed process is：
Into the soil after chemical modification cyclodextrin eluting, with institute's enrichment isolation in 6% (v/m) ratio inoculation present invention
High efficient strain, and with 3.0% (m/m) ratio add cornstalk biological Carbon Materials, be thoroughly mixed uniformly after, regulation soil
Earth pH conditions keep 60% field moisture to 7.0, and the aerobic culture of lucifuge 14 weeks at 30 DEG C, monitoring analysis benzo [a]
The changes of contents of pyrene different times, as shown in Figure 4, the results showed that, the addition of cornstalk biological charcoal, be advantageous to microorganism to washing
After de- processing in soil benzo [a] pyrene depth degradation, after culture 14 weeks, control treatment (CK), efficient degrading bacteria processing (M),
In efficient degrading bacteria+charcoal processing (M+B) processing, the degraded clearance of benzo [a] pyrene respectively reached 27.2%,
28.1% and 32.0%, the reparation to contaminated soil serves good effect.
The method that the present invention repairs polycyclic aromatic hydrocarbon pollution, using the method for chemical modification, cyclodextrin structure is carried out
Modification so that cyclodextrin is capable of the guest species of compound bigger molecule, and chemical modification cyclodextrin more holds than general surfactant
It is soluble in water, and there is nontoxic characteristic, its clathration to materials such as PAHs, it is organic that such hydrophobicity can be greatly increased
The solubility of pollutant, the bioavailability of PAHs in the soil liquid is improved, so as to improve the effect of PAHs biological metabolism；Again
Using the flourishing pore structure of charcoal and unique surface chemical property, the organic pollution in surrounding medium is inhaled
It is attached, and then influence migration and the home to return to of pollutant.Organic pollution is fixed in soil by charcoal, passes through degradation bacteria and soil
In organic pollution direct contact and degradable organic pollutant, ecological, environmental protective, do not produce noxious pollutant, can also solve
The handling problems of biomass castoff, also can effectively improve structure of soil microbial community and environmental quality.
More than, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto is any to be familiar with sheet
Those skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in should all be covered
Within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by the protection domain that claim is defined.
Claims (10)
- A kind of 1. method for repairing polycyclic aromatic hydrocarbon pollution, it is characterised in that comprise the following steps：(1) contaminated soil is eluted using chemical modification cyclodextrin eluent；(2) degradation bacteria, and soil after the elution that the degradation bacteria prepared is seeded in step (1) according to predetermined ratio are prepared In, at the same into soil after elution add predetermined quality charcoal, obtain mixture；(3) pH of mixture and the water content of mixture in regulating step (2), while lucifuge training is carried out at a predetermined temperature Support, contaminated soil is repaired.
- 2. the method according to claim 1 for repairing polycyclic aromatic hydrocarbon pollution, it is characterised in that in the step (1), Also include before being eluted to contaminated soil：Remove the impurity in contaminated soil and soil is air-dried；It will divide after doing Soil pulverizes and sieved, and obtains the contaminated soil that particle diameter is 0.01~10mm.
- 3. the method according to claim 1 for repairing polycyclic aromatic hydrocarbon pollution, it is characterised in that in the step (1) Elution process to contaminated soil is：According to mass ratio it is 5 by chemical modification cyclodextrin eluent and contaminated soil:1~8:1 Ratio mixing, stirring, obtain the first mixture；Heat up vibration and excusing from death reinforcing oscillation treatment are carried out to the first mixture；It is right again The first mixture after concussion carries out centrifugal treating, removes soil after supernatant is eluted.
- 4. the method according to claim 1 for repairing polycyclic aromatic hydrocarbon pollution, it is characterised in that in the step (1), The concentration range of the chemical modification cyclodextrin is 100~300g/L；The chemical modification cyclodextrin includes methyl~β~cyclodextrin, hydroxypropyl~β~cyclodextrin, sulphur ethyl~β~cyclodextrin With any one or a few in acetyl group~β~cyclodextrin.
- 5. the method according to claim 1 for repairing polycyclic aromatic hydrocarbon pollution, it is characterised in that in the step (2) The step of carrying out preparation degradation bacteria is, by Na2SO4, villaumite, potassium dihydrogen phosphate, yeast, deionized water, trace element in it is any Several mixing, obtain 100~150ml of microbiological culture media of predetermined salinity；By 5~8g oil-polluted soils and concentration be 30~ 50g/L 100~200ul external source polycyclic aromatic hydrocarbon is added in above-mentioned culture medium, is cultivated 10~15 days in constant temperature oscillator, Obtain 5~10ml supernatants and be added in fresh culture and pass on amplification, be so enriched with 8~10 times repeatedly, obtain degradation bacteria.
- 6. the method according to claim 1 for repairing polycyclic aromatic hydrocarbon pollution, it is characterised in that in the step (2), Degradation bacteria is inoculated into after elution in soil with 3~8% (v/m) ratios；The ratio of soil is after the charcoal and elution 1.0%~5% (m/m).
- 7. the method according to claim 1 for repairing polycyclic aromatic hydrocarbon pollution, it is characterised in that in the step (3) The pH scopes of mixture are 6.5~7.5；The water content of mixture is 60%, and temperature range during lucifuge is 25 DEG C~35 DEG C；Training It is 10~14 weeks to support the time.
- 8. the method according to claim 5 for repairing polycyclic aromatic hydrocarbon pollution, it is characterised in that the villaumite includes chlorine Change any one or a few in sodium, magnesium chloride, potassium chloride, calcium chloride, ammonium chloride.
- 9. the method according to claim 5 for repairing polycyclic aromatic hydrocarbon pollution, it is characterised in that the microculture The salinity of base is 0.5%~2.5%.
- 10. the method according to claim 1 for repairing polycyclic aromatic hydrocarbon pollution, it is characterised in that described charcoal Preparation method be：The one or more in rice straw, maize straw, bamboo chip, peanut straw are obtained as raw material, by described in Raw material is placed in 400 DEG C~600 DEG C of tube furnace under the protection of nitrogen and is pyrolyzed, and pyrolysis time is 3h~5h, and cooling is dry The charcoal obtained after dry.
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| CN108941187A (en) * | 2018-07-19 | 2018-12-07 | 珠海市万顺睿通科技有限公司 | A kind of abatement of pollution method of contaminated soil |
| CN110508613A (en) * | 2019-09-06 | 2019-11-29 | 延边大学 | A kind of restorative procedure of polycyclic aromatic hydrocarbon pollution |
| CN110548757A (en) * | 2019-09-05 | 2019-12-10 | 金华北顿生物科技有限公司 | Treatment method of petroleum-polluted soil |
| CN110756578A (en) * | 2019-10-31 | 2020-02-07 | 中冶华天工程技术有限公司 | Method for removing soil organic pollutants by rapidly culturing indigenous microorganisms |
| CN110899315A (en) * | 2019-11-15 | 2020-03-24 | 南京农业大学 | Polycyclic aromatic hydrocarbon and vanadium combined pollution soil synergistic leacheate for stone coal smelting area and application thereof |
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| CN115318812A (en) * | 2022-08-25 | 2022-11-11 | 广东工业大学 | Method for repairing benzo (a) pyrene polluted soil |
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| CN110756578A (en) * | 2019-10-31 | 2020-02-07 | 中冶华天工程技术有限公司 | Method for removing soil organic pollutants by rapidly culturing indigenous microorganisms |
| CN110899315A (en) * | 2019-11-15 | 2020-03-24 | 南京农业大学 | Polycyclic aromatic hydrocarbon and vanadium combined pollution soil synergistic leacheate for stone coal smelting area and application thereof |
| CN111906141A (en) * | 2020-07-14 | 2020-11-10 | 西南石油大学 | Soil remediation method based on biochar immobilized degrading bacteria |
| CN113025337A (en) * | 2021-02-04 | 2021-06-25 | 浙江卓锦环保科技股份有限公司 | Preparation method of soil remediation preparation and application of soil remediation preparation in soil remediation |
| CN115232625A (en) * | 2021-09-30 | 2022-10-25 | 黄芸 | Treatment method and application of soil organic pollutants |
| CN114602967A (en) * | 2022-03-04 | 2022-06-10 | 南京农业大学 | Method for removing USEPA PAHs in soil by using functional indigenous flora solid microbial inoculum |
| CN114602967B (en) * | 2022-03-04 | 2022-12-23 | 南京农业大学 | Method for removing USEPA PAHs in soil by using functional indigenous flora solid microbial inoculum |
| CN115318812A (en) * | 2022-08-25 | 2022-11-11 | 广东工业大学 | Method for repairing benzo (a) pyrene polluted soil |
| CN115532802A (en) * | 2022-10-20 | 2022-12-30 | 生态环境部南京环境科学研究所 | Method for degrading and repairing PAHs in polluted soil |
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