112 results about "Petroleum Pollution" patented technology

The invention belongs to the technical field of environment, and particularly relates to an environment-friendly biological agent for repairing and treating petroleum polluted water and soil and a preparation method of the environment-friendly biological agent. The biological agent is prepared by mixing a compound microbial agent, a biological surfactant and an auxiliary material in parts by mass, has the characteristics of high efficiency, environment friendliness and no secondary pollution, can remarkably improve the remediation efficiency of petroleum-contaminated soil, and has a wide application prospect.

The invention discloses efficient carbon sequestration Brucella from an oil-containing solid waste residue source and application of the efficient carbon sequestration Brucella. The Brucella is Brucella sp A54-5 with the preservation number of CCTCC (China Center for Type Culture Collection) NO: M20241650. The Brucella is obtained through ARTP mutagenesis and screening by taking Brucella Brucella sp A54 separated from oil-containing solid waste residues of an oil field as a starting strain, has excellent characteristics of reducing pollution and sequestration carbon and relatively strong stress resistance, and has the advantages of deep recycling (soil transformation) of the oil-containing solid waste residues, improvement of the carbon sequestration capacity of petroleum-contaminated soil and improvement of the oil-containing solid waste residues. The method has a wide application prospect in the fields of petroleum-polluted soil remediation and the like, and has great significance in pollution reduction and convergence increase in petroleum and petrochemical industries under the background of supporting double carbon.

The present application relates to the field of soil remediation. Particularly disclosed is a petroleum-contaminated soil remediation method. The method comprises the following steps: thoroughly mixing a dilute hydrochloric acid solution of isooctanol polyoxyethylene ether phosphate or Triton with crushed petroleum-contaminated soil, r filtering and cleaning same, and then measuring the preliminarily cleaned contaminated soil; after the measurement shows said preliminarily cleaned contaminated soil is qualified, using a neutralizer to neutralize and remediate the preliminarily cleaned soil; and further filtering and cleaning same, and drying same to obtain cleaned remediated soil. The petroleum-contaminated soil remediation method provided by the present application can effectively remove petroleum contaminants from petroleum-contaminated soil, remove cadmium and arsenic from contaminated soil, and can also remediate soil damaged by petroleum contamination while removing contaminants. The present application is suitable for cleaning and remediation of petroleum-contaminated soil.

The invention discloses a flora prediction and petroleum pollution remediation method based on machine learning. The method comprises the following steps: collecting multiple groups of experimental data of a diesel oil pollution sample treated by a microbial agent, extracting environmental factors, microbial community characteristics and target response variables to construct a training data set after missing value processing, abnormal value detection and standardized pretreatment, and importing the data set into a preset machine learning model to obtain a training result; carrying out feature learning, classification training and hyper-parameter optimization by adopting a GridSearchCV method in combination with 10-fold cross validation; evaluating the correlation between a target response variable classification result and the features through a multivariable Pearson's correlation matrix, and constructing an optimal test set; and finally, selecting an optimal prediction model according to a preset index. According to the method, the model training quality is improved through data preprocessing and correlation analysis, efficient flora prediction and algorithm application evaluation are achieved by means of multiple machine learning algorithms, scientific support is provided for petroleum pollution remediation, and remediation accuracy and efficiency are improved.

The invention discloses a soil carbon sequestration microorganism isolated culture method under medium and high petroleum pollution stress and application, and the isolated culture method comprises the following steps: dispersing medium and high petroleum pollution soil surface soil in sterile water to obtain an original bacterial suspension containing carbon sequestration microorganisms, and carrying out gradient dilution on the original bacterial suspension; respectively coating on a carbon-source-free solid culture medium for culturing, purifying a bacterial colony obtained by culturing, and carrying out step-by-step amplification culture on a single bacterial colony obtained by purifying in a carbon-source-free liquid culture medium. The method has the beneficial effects that the invention provides the method for enriching and screening the indigenous indigenous efficient carbon sequestration strains with the carbon sequestration function from the medium-high petroleum pollution soil sample, and the four strains which can survive in the medium-high petroleum pollution stress environment and have good carbon dioxide sequestration capability are obtained through the method; the strains have potential pollution reduction and carbon sequestration synergistic capability, and a new technical path can be provided for green remediation and carbon sequestration of petroleum-contaminated soil.

The invention discloses a petroleum pollutant diffusion dynamic tracking simulation method, device and equipment, and relates to the technical field of pollutant diffusion simulation, and the method comprises the steps: determining a multi-dimensional simulation working condition of pollutant diffusion in a target water body region; establishing an unstructured grid hydrodynamic model of the target water body area according to the multi-dimensional simulation working condition; an oil spill prediction model is constructed based on the unstructured grid hydrodynamic model, and the diffusion process of pollutants is simulated according to the oil spill prediction model; if the pollutants are non-soluble petroleum pollutants, the oil spill prediction model is a four-process coupling model including diffusion motion, wind-induced drift, turbulent diffusion and weathering degradation, and if the pollutants are soluble petroleum pollutants, the oil spill prediction model is a convective diffusion model. The simulation precision of the diffusion process and the influence range of the petroleum pollutants can be improved, the simulation precision is improved by 30% or above, and the method is particularly suitable for emergency decision support of closed water bodies such as reservoirs.

The invention discloses a Gordonia ovorans YDY-4 strain and an application of the Gordonia ovorans YDY-4 strain in degradation of n-hexadecane. The cholesterol-eating Gordonia sp. YDY-4 is named as the cholesterol-eating Gordonia sp. YDY-4, is preserved in the China Center for Type Culture Collection (CCTCC), and has the preservation number of CCTCC M 20251290, and the cholesterol-eating Gordonia sp. YDY-4 is named as the cholesterol-eating Gordonia sp. YDY-4 and is preserved in the China Center for Type Culture Collection (CCTCC). The Gordonia ovorans YDY-4 provided by the invention has the capability of degrading n-hexadecane under the condition that the pH (Potential of Hydrogen) is 7.0 to 9.0, and can grow at 28 to 32 DEG C. The Gordonia ovorans YDY-4 provided by the invention has relatively strong environmental adaptability and n-hexadecane degradation capability, and provides a basis for bioremediation of petroleum polluted environment and application of a microbial enhanced treatment technology.

The invention discloses a Pseudomonas nicosulfurones bacterial strain and an application of the Pseudomonas nicosulfurones bacterial strain in degradation of phenanthrene and benzopyrene. According to the invention, a degradation strain Pseudomonas nicosulfurensis DY-8, which takes phenanthrene and benzopyrene as carbon sources, is obtained by domestication, separation and identification from petroleum-polluted soil in Ningbo. The invention also relates to a method for preparing the degradation strain Pseudomonas nicosulfurensis DY-8 with phenanthrene and benzopyrene as carbon sources. The DY-8 can utilize phenanthrene and benzopyrene as carbon sources, and after the DY-8 is cultured in an inorganic salt culture solution with the initial concentration of phenanthrene and benzopyrene being 50 mg.L <-1 > and 25 mg.L <-1 > respectively for 7 days, the degradation rates of phenanthrene and benzopyrene can reach 70% or above. Therefore, the strain has good application potential in the aspect of bioremediation of polycyclic aromatic hydrocarbon.

The invention belongs to the technical field of oil well sand prevention, and provides a filling tool for underground mining of a petroleum vertical well, which comprises a drainage inner pipe, a connecting end is mounted at the bottom of the drainage inner pipe in a threaded manner, an inner screen pipe is mounted at one end of the connecting end in a threaded manner, and a plurality of inner screen holes are formed in the side surface of the inner screen pipe. The intercepting assembly is arranged, the hole diameter of the intercepting assembly is smaller than the hole diameter of the outer screen hole, and the hole diameter of the outer screen hole is smaller than the hole diameter of the screen pipe, so that the outer screen pipe and the intercepting assembly can intercept most small-particle gravel, and loss of the small-particle gravel is prevented; by means of the sand burning glue, small-particle gravel blocked in the intercepting assembly and the outer screen pipe can be conveyed back into gravel layers, gaps between the gravel layers can be filled, the gravel layers can be combined more tightly and stably, the gravel can be mutually bonded through the sand burning glue, the gravel is prevented from being disengaged from the screen pipe, and therefore petroleum pollution is avoided.

The invention discloses a bacterium DY-11 for degrading phenanthrene and benzopyrene in petroleum-contaminated soil and application of the bacterium DY-11. The bacterial strain is Achromobacter expander DY-11, and the preservation number of the bacterial strain is GDMCC No: 66005. Experiments prove that the strain DY-11 can respectively utilize phenanthrene and benzopyrene as carbon sources to degrade phenanthrene and benzopyrene, and after the strain DY-11 is cultured in inorganic salt culture solutions with the initial concentration of phenanthrene and benzopyrene being 50 mg.L <-1 > and 25 mg.L <-1 > respectively for 7 days, the degradation rates of phenanthrene and benzopyrene can reach 65% or above. Therefore, the DY-11 is a strain which can degrade phenanthrene and benzopyrene and has very strong tolerance to phenanthrene and benzopyrene, has strong adaptability to polycyclic aromatic hydrocarbons, and has better application potential in the aspect of bioremediation.

The invention is applicable to the technical field of industrial wastewater treatment, and provides a construction method of a microalgae-in-situ bacteria strengthening system for degrading naphthenic acid, which comprises the following steps: separating and identifying two strains of in-situ bacteria from a discharge port of an oil-producing wastewater treatment plant, and constructing a three-strain typical stain-resistant green alga-in-situ bacteria co-culture system. The strengthening system can highly tolerate and efficiently degrade naphthenic acid, can effectively remove nitrogen and phosphorus, and has higher biomass and high-value compound yield. The microalgae-in-situ bacterium strengthening system can reduce pollutant discharge and improve the microalgae resource utilization rate, and the microalgae-in-situ bacterium strengthening system can be used as a biological strengthening degradation technology of naphthenic acid and can be suitable for purification treatment of oil production wastewater and petroleum polluted water areas.

The invention belongs to the technical field of solid waste recycling, and discloses efficient carbon sequestration pseudomonas stutzeri from an oil-containing solid waste residue source and application of the efficient carbon sequestration pseudomonas stutzeri, and the efficient carbon sequestration pseudomonas stutzeri is pseudomonas stutzeri A58-5 with the preservation number of CCTCC NO: M 20241582. The Pseudomonas stutzeri is obtained by taking Pseudomonas stutzeri A58 separated from oil-containing solid waste residues of an oil field as an original strain and carrying out ARTP mutagenesis and screening, has the excellent characteristics of reducing pollution and sequestering carbon and is relatively strong in stress resistance; the method has wide application prospects in the fields of deep recycling (soil conversion) of oil-containing solid waste residues, improvement of the carbon sequestration capacity of the petroleum-contaminated soil, remediation of the petroleum-contaminated soil and the like, and is of great significance in pollution reduction and sequestration increase in the petroleum and petrochemical industry under the background of supporting double carbon.

The application discloses a floating composite microbial preparation for removing marine oil pollution and a preparation method thereof. The floating composite microbial preparation contains bacillus thuringiensis NH26 strain, hollow glass microbeads and a lipopeptide surfactant purified from a fermentation liquor of the NH26 strain, has floating characteristics, can rapidly activate and efficiently degrade oil hydrocarbon, has good degradation capacity for alkanes and polycyclic aromatic hydrocarbons in seawater, and still has good degradation capacity for alkanes in seawater containing high-concentration oil hydrocarbon. The floating composite microbial preparation can be used for removing marine oil pollution and repairing marine environment. In addition, the application further provides a preparation method of the floating composite microbial preparation. The preparation method has simple preparation process, the obtained floating composite microbial preparation has uniform particle size, has high embedding rates for nitrogen and phosphorus, and can be prepared on a large scale.

This invention discloses a method for preparing heavy metal adsorbent materials (PCS) by co-milling and pyrolysis of petroleum-contaminated soil and iron oxides. First, iron oxides or their natural minerals are added to the petroleum-contaminated soil. Then, a high-energy ball milling process is used for mechanochemical activation. The milled mixture is then subjected to slow pyrolysis to form carbonized soil with a surface rich in carbonates and metal oxides. This carbonized soil can be used to adsorb heavy metals from wastewater, with a maximum adsorption capacity of over 300 mg / g for lead. This method simultaneously achieves efficient remediation and high-value resource utilization of PCS through the exploitation, value-added transformation, and "waste-to-waste" approach of the endogenous resources of petroleum-contaminated soil. It contributes to the innovation of petroleum-contaminated soil remediation models and the synergistic remediation of soil-water pollution.

The invention discloses trichoderma longibrachiatum for degrading petroleum hydrocarbon in a saline-alkali environment, a culture and application of the trichoderma longibrachiatum, and relates to the technical field of microorganisms. The preservation number of the trichoderma longibrachiatum is CGMCC (China General Microbiological Culture Collection Center) No. The trichoderma longibrachiatum provided by the invention has an efficient petroleum degradation characteristic, provides a practical and effective solution for the petroleum pollution problem of the saline-alkali soil, can efficiently degrade petroleum hydrocarbon in the saline-alkali soil, and has a good application prospect.

The invention belongs to the field of petrochemical environmental protection, and relates to a cleaning-low-temperature pyrolysis combined remediation method for high-concentration petroleum contaminated soil. The problems of long oily soil treatment period, low efficiency, high cost and the like in an existing repairing process are solved. The method comprises the following steps: step 1, pretreating the petroleum-contaminated soil; 2, cleaning treatment is conducted on the contaminated soil, specifically, the prepared cleaning solution is added into a cleaning tank containing oily soil, after heating and stirring are conducted, the mixed solution in the cleaning tank is subjected to centrifugal treatment, and the centrifuged mixed solution is divided into three layers including an upper layer oil phase, a middle mixed solution and a bottom layer eluted soil; recovering an upper-layer oil phase and a middle-layer cleaning solution, and collecting lower-layer eluted soil; and 3, the lower-layer eluted soil is placed in a pyrolyzing furnace for low-temperature pyrolysis treatment. Petroleum pollutants in the soil are greatly recycled through the cleaning process under the optimal condition, the contaminated soil can be treated to reach the national construction land standard through the subsequent low-temperature pyrolysis process, economic benefits are created while hazardous waste is treated, the cost is reduced, the efficiency is improved, and the environmental protection pressure is relieved.

The invention discloses an oil spill dispersant for efficiently treating water area petroleum pollution, which is characterized by comprising biodiesel, a biological surfactant, a first nonionic surfactant and a second nonionic surfactant, the invention relates to a biodiesel fuel which is prepared from the following components in percentage by mass: 49.35%-79.55% of biodiesel, 5.25%-8.75% of a biological surfactant, 6.40%-17.60% of a first nonionic surfactant and 8.80%-24.30% of a second nonionic surfactant. The oil spill dispersing agent has the advantages that the oil spill dispersing agent is free of secondary pollution to the environment, various technical indexes meet the requirements of the national standard GB 18188.1-2021 Oil spill dispersing agent technical conditions, the biodegradation rate, the flash point, the kinematic viscosity, the emulsification rate, the fish acute toxicity-median lethal time and the like are superior to those of the national standard requirements, and the oil spill pollution of the water area can be efficiently treated.

The invention discloses a Bosea thioxidans DY-5 strain and an application of the Bosea thioxidans DY-5 strain in degradation of phenanthrene and benzopyrene. The strain Bosea thioxidans DY-5 is obtained through domestication, separation and identification from petroleum-contaminated soil of Ningbo, phenanthrene and benzopyrene can be used as carbon sources, and after the strain is cultured in an inorganic salt culture solution with the initial concentration of phenanthrene and benzopyrene being 50 mg.L <-1 > and 25 mg.L <-1 > respectively for 7 days, the degradation rate of phenanthrene and benzopyrene can reach 75% or above. Therefore, the strain has good application potential in the aspect of bioremediation of polycyclic aromatic hydrocarbon.

This invention discloses a benzo[a]pyrene-degrading fungus, *Nigrospora osmanthi* DL-7, for use in petroleum-contaminated soil, along with its inoculum and applications. This invention domesticated, isolated, and identified a benzo[a]pyrene-degrading strain, *Nigrospora osmanthi* DL-7, from petroleum-contaminated soil in Ningbo. DL-7 can utilize benzo[a]pyrene as a carbon source, even at an initial benzo[a]pyrene concentration of 25 mg·L⁻¹. ‑1 After culturing in an inorganic salt broth for 7 days, the pure DL-7 strain achieved a degradation rate of over 85% for benzo[a]pyrene. When prepared as a bacterial agent, the degradation rate of benzo[a]pyrene could be increased to over 90%. Therefore, this strain and its bacterial agent have good application potential in the bioremediation of polycyclic aromatic hydrocarbons.

The invention discloses a method for directly oxidizing petroleum hydrocarbon in soil through in-situ regulation and control of soil polarity Fenton, which comprises the following steps: fully mixing a hydrophilic organic matter and ferric salt to prepare a soil polarity regulation and control solution, adding the prepared soil polarity regulation and control solution into petroleum-contaminated soil, and regulating and controlling the polarity of the petroleum-contaminated soil through oscillation; hydrogen peroxide is added for continuous oscillation, and petroleum hydrocarbon in the petroleum-contaminated soil is efficiently and directly oxidized. According to the method, Fenton degradation of petroleum hydrocarbon in soil is enhanced, and the petroleum hydrocarbon can be removed to the maximum extent by means of polarity regulation and control; after the soil is regulated and controlled, the polarity of the soil is enhanced, petroleum hydrocarbon in the soil is directly oxidized, and the Fenton oxidation capacity of the petroleum hydrocarbon in the soil is remarkably improved.

The invention belongs to the technical field of oil reservoir microorganisms, and particularly relates to a zoococcus strain and application thereof. The bacterial strain is a Planococcus sp. Bacterial strain WL-9, and is a new strain of the Planococcus sp. The strain is separated from an oil reservoir source, can reduce interfacial tension between crude oil and water, plays a role in emulsifying the crude oil, is good in oil reservoir adaptability, and can convert the crude oil into methane in an extreme environment of the oil reservoir and in the presence of CO2. The invention provides a new high-quality strain resource for microbial oil recovery, and has great significance for improving the oil recovery rate, reducing carbon emission by CCUS microbial carbon conversion and treating and repairing petroleum pollution.

The application discloses a benzo[a]pyrene-degrading fungus Arthrinium acutiapicum DL-5 in petroleum contaminated soil, a microbial inoculum of the Arthrinium acutiapicum DL-5 and application of the Arthrinium acutiapicum DL-5. ‑1 The benzo[a]pyrene-degrading rate of the pure Arthrinium acutiapicum DL-5 to benzo[a]pyrene can reach more than 75% after the Arthrinium acutiapicum DL-5 is cultured in an inorganic salt culture solution with an initial concentration of 25 mg / L of benzo[a]pyrene for 7 days. After the Arthrinium acutiapicum DL-5 is made into a microbial inoculum, the benzo[a]pyrene-degrading rate of the Arthrinium acutiapicum DL-5 to benzo[a]pyrene can be promoted to more than 80%, and therefore, the Arthrinium acutiapicum DL-5 and the microbial inoculum have good application potential in the bioremediation of polycyclic aromatic hydrocarbons.

The invention relates to the technical field of molecular biology and environmental biology, and discloses a PCR chip, application thereof and a method for evaluating the toxic effect of petroleum pollutants on zebra fish. The PCR chip comprises 22 pairs of target gene primers, each pair of target gene primers comprises an upstream primer and a downstream primer, and the sequences of the 22 pairs of target gene primers are as shown in SEQ ID NO. 1 to SEQ ID NO. 44. According to the invention, 22 specific related genes are specifically selected according to a research result, and a PCR chip for researching the toxic effect of the heavy metal pollutants on the zebra fish is integrated, so that chip customization based on the heavy metal pollutants is realized; the operation method of the PCR chip is mature and simple, a large amount of toxicity data can be obtained at a time, the toxic effect mechanism of the heavy metal pollutants on the zebra fish embryos can be researched more comprehensively and in detail, and data support is provided for deeper research on the toxic mechanism of the heavy metal pollutants.

The invention is applicable to the technical field of petroleum-polluted soil treatment, and provides a viscosity-temperature compensation method for blocking migration of petroleum pollutants in soil based on a source, which comprises the following steps: extracting petroleum in soil, measuring asphaltene content, adjusting the water content parameter of polluted soil, adding a first modifier epoxidized acrylate (AESO), and uniformly stirring; adding a second modifier polymethacrylate (T602HB), uniformly stirring, continuing to add lime and fly ash, uniformly stirring, compacting and curing, and carrying out a wide-temperature-range simulated rainfall test. On one hand, a first modifier AESO and a second modifier T602HB are added according to the content of asphaltene in a grading manner to construct a composite active interface of'tackifying-viscosity reducing and combining ', so that the adsorption effect between soil particles and petroleum is enhanced, and on the other hand, the modifiers and lime-fly ash are added in a grading manner; the competitive adsorption phenomenon of the composite modifier is solved, and the compatibility problem of organic-inorganic materials is prevented.

The present invention provides a polar low-temperature surfactant-producing bacterium Pedobacter cryoconitis NJ‑S‑72 and its application, which belongs to the field of bioremediation technology for petroleum and petroleum product contaminated environments. The strain was deposited in the General Microbiology Center of the China Microorganism Culture Collection Administration on October 31, 2024, with a deposit number of CGMCC NO: 32458. The strain is derived from the soil of the Fildes Peninsula in Antarctica, and its fermentation liquid can be directly applied to the ecological restoration of oil spills in polar or low-temperature environments. Compared with chemical surfactants, it can reduce secondary damage to the environment, and the biosurfactant produced by the strain can accelerate the emulsification of oil and accelerate the biodegradation of oil pollution.

The invention discloses an industrial application device and method for microbe enhanced ex-situ remediation of petroleum-contaminated soil by applying ozone sequencing batch driving. According to the method, ozone and air with a certain concentration are intermittently and circularly injected into the soil containing the petroleum pollutants in an ectopic mode for a specific time period, and the contaminated soil is remedied through ozone oxidation coupled with microorganisms. According to the invention, ozone is injected to decompose organic pollutants which are difficult to degrade in petroleum into short-chain organic matters with good biodegradability by utilizing relatively strong oxidability and penetrability of ozone, so that the bioavailability of the pollutants is improved; air injection promotes microorganisms to decompose pollutants difficult to degrade in the soil, and alternate synergy of chemical oxidation and bioremediation is achieved through a sequencing batch type gas circulation injection mode, so that the overall remediation efficiency is improved, and then ectopic harmless treatment of the contaminated soil is achieved.

The invention discloses a petroleum-contaminated soil remediation agent based on synergism of a fixed microbial inoculum and free bacteria and application of the petroleum-contaminated soil remediation agent, and belongs to the technical field of soil pollution control and treatment. The petroleum-contaminated soil remediation agent is prepared from an immobilized microbial agent prepared by immobilizing stenotrophomonas by adopting rape straw biochar and free pseudomonas, wherein the immobilized microbial agent is prepared by immobilizing stenotrophomonas by adopting rape straw biochar; wherein both the stenotrophomonas and the pseudomonas are preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation numbers of the stenotrophomonas and the pseudomonas are respectively CGMCC No.34532 and CGMCC No.34533. According to the method, the petroleum-contaminated soil is repaired by adopting a technology of combining the immobilized microbial inoculum and the free degrading bacteria for the first time, so that the advantages of the immobilized microbial inoculum are reserved, and the degrading effect is improved through the synergistic effect of the immobilized microbial inoculum and the free bacteria. In addition, an adsorption method is used for immobilization, operation is simple, chemical reagents such as an embedding agent and a cross-linking agent are not added, and secondary pollution is avoided.

The application discloses a strain of Acinetobacter, the strain name is C16ZT1, and simultaneously proposes a bacterial agent containing the different bacillus, and further uses the bacterial agent for treating petroleum pollution wastewater. The Acinetobacter can efficiently degrade the petroleum production wastewater containing chain alkanes, can still realize the degradation effect quickly and stably under the conditions of high concentration, high salt and extreme acid and alkali, and can degrade more than 95% of the petroleum production wastewater within 144 hours. In the application in sewage treatment, the strain has strong tolerance, can tolerate high-concentration alkanes, and has a wide adaptation range to salt concentration, pH and the like, and has a good application prospect.

The invention discloses a coupling catalytic oxidation in-situ remediation device and method for petroleum-contaminated soil. The device comprises a chemical mixer, and the chemical mixer is connected with a liquid conveying pipe through a feeding pump; the ozone generator is connected with the gas conveying pipe through the gas pump; the gas conveying pipe is arranged in the liquid conveying pipe and is coaxial with the liquid conveying pipe; the liquid conveying pipe and the gas conveying pipe are connected with the injector, the injector sprays chemicals and ozone to the oil-contaminated soil, and the gas absorption film is flatly laid on the oil-contaminated soil; petroleum hydrocarbon components in the petroleum-contaminated soil are removed in situ in an efficient and environment-friendly mode, and safe disposal of the petroleum-contaminated soil is achieved.