CN109735344B - Curing agent for repairing hydrophobic organic matter contaminated soil and application method thereof - Google Patents
Curing agent for repairing hydrophobic organic matter contaminated soil and application method thereof Download PDFInfo
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Abstract
The invention relates to a curing agent for repairing hydrophobic organic matter contaminated soil and an application method thereof. The curing agent also contains a thickening agent; oil gelling agent, activated humic acid, microbial degradation microbial inoculum, thickening agent and water in the mixed water solution according to the weight ratio of (0.2-0.5): (1-8): 0.5: (0.5-2): (90-98). The curing agent provided by the invention adsorbs and cures hydrophobic organic pollutants through the oil gelling agent, and the activated humic acid with amphiphilic property is adsorbed on the surface of the oil gel to form a large number of oil-gas interfaces, so that the degradation effect of microbial degradation bacteria on the hydrophobic organic pollutants is accelerated, and the curing agent also has good biocompatibility, can stimulate plant growth to a certain extent, improves the organic matter content of soil, promotes the formation of a soil aggregation structure, and improves soil hardening. Provides technical support for protecting farmland environment and promoting sustainable development of facility agriculture.
Description
Technical Field
The invention relates to a curing agent for repairing hydrophobic organic matter contaminated soil and an application method thereof, belonging to the field of environmental protection.
Background
In recent years, with the rapid development of agriculture and industry, various pollutants continuously enter soil through the abuse of chemical fertilizers and pesticides, random discharge of industrial and mining enterprise wastes and the like, and are continuously accumulated in the soil, so that the soil quality is reduced, the functions are degraded, the ecological environment is gradually worsened, and the sustainable development of agriculture and the safety and health of human beings are seriously threatened. Among them, the damage of the soil caused by the pollution of hydrophobic organic pollutants represented by organic chlorine, petroleum hydrocarbon, polycyclic aromatic hydrocarbon and the like is particularly serious. The U.S. EPA priority control directory indicates: of the 1200 contaminated soils, 49% of the sites were contaminated with hydrophobic organic contaminants. At present, about 1 × 10 is currently available in China8hm2In cultivated land, nearly 1/5 is polluted by hydrophobic organic pollutants to different degrees, and the yield of grains is reduced by 2.5 multiplied by 10 every year9kg, causing direct economic losses of over 200 billion yuan. In the face of such severe situation, an environment-friendly and efficient method is adopted, and a research on a hydrophobic organic matter contaminated soil remediation technology is imperative.
Research on contaminated soil remediation techniques starts in the 70 s of the 20 th century, and related remediation techniques are continuously updated and developed with the increase of soil pollutant types, and currently, remediation methods for soil organic matter pollution mainly include a reduction method disclosed in chinese patent document CN101053689A, an ozone oxidation method disclosed in chinese patent document CN102513345A, an animal and plant remediation method disclosed in chinese patent document CN104438298A, an evacuation method disclosed in chinese patent document CN203875107U, a leaching method disclosed in chinese patent document CN104307860A, a solidification method disclosed in chinese patent document CN103881727, a thermal desorption method disclosed in chinese patent document CN103506378A, a microwave method disclosed in chinese patent document CN103551373A, and the like. Although these methods can repair organic-contaminated soil to some extent, they have respective disadvantages.
The solidification and stabilization technology is widely applied to the remediation of hydrophobic organic polluted soil, and the curing agent at the present stage is mostly prepared by mixing silicate cement with an adsorptive material, wherein the adsorptive material is most commonly active carbon or organic bentonite. However, the traditional curing agents have many disadvantages, such curing agents only seal the organic pollutants and do not decompose the organic pollutants to reduce toxicity, the soil body after being repaired is high in alkalinity and not beneficial to the existence of microorganisms with the capacity of degrading the organic pollutants, and meanwhile, alkaline leachate is easily generated under rainfall conditions, so that the acid-base balance of the surrounding soil body and water body is changed, and the surrounding organisms are adversely affected.
In conclusion, aiming at the defects of the existing curing agent in repairing the hydrophobic organic pollutant compound polluted soil, a novel curing agent which can be stably cured and can decompose the hydrophobic organic pollutant simultaneously, has high curing efficiency, low cost, stable performance, wide material source and environmental friendliness is a focus of increasing attention of the industry people.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the curing agent which can adsorb, cure and decompose hydrophobic organic pollutants simultaneously, is safe and efficient, has strong applicability and cannot cause adverse effects on soil. The curing agent can adsorb hydrophobic organic pollutants in soil, form oil-soluble gel with the organic pollutants, enrich and fix the organic pollutants, form a large number of oil-gas interfaces, and accelerate the degradation of the hydrophobic organic pollutants by the microbial degradation bacteria.
The invention also provides an application method of the curing agent for repairing the soil polluted by the hydrophobic organic matter.
The technical scheme of the invention is as follows:
a curing agent for repairing hydrophobic organic matter contaminated soil is a mixed aqueous solution containing an oil gelling agent, activated humic acid and a microbial degradation microbial inoculum;
the oil gelling agent is one or the combination of more than two of 12-hydroxystearic acid, N-lauroyl-L-glutamic acid, D-alanine, L-alanine and diethyl aluminum phosphate; the activated humic acid is humic acid activated by a sulfonation method, and the water solubility of the activated humic acid is more than or equal to 97 percent; the microbial degradation microbial inoculum comprises one or the combination of more than two of pseudomonas, mycobacterium and botrytis cinerea.
Preferably, according to the invention, the curing agent further comprises a thickener; further preferably, the thickener is sodium carboxymethyl cellulose.
According to the invention, the curing agent is preferably an oil gelling agent, activated humic acid, a microbial degradation microbial inoculum, a thickening agent and water, and the weight ratio is (0.2-0.5): (1-8): 0.5: (0.5-2): (90-98).
According to the invention, the hydrophobic organic pollutant in the hydrophobic organic matter contaminated soil is one or any combination of more than two of benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene.
The preparation method of the curing agent for repairing the soil polluted by the hydrophobic organic matter comprises the steps of adding an oil gelling agent and activated humic acid into water, stirring and mixing uniformly, then adding a thickening agent, mixing uniformly, and finally adding a microbial degradation microbial inoculum to obtain the curing agent for repairing the soil polluted by the hydrophobic organic matter.
The method for repairing the hydrophobic organic matter contaminated soil by using the curing agent comprises the following steps:
(1) firstly, injecting the curing agent into the hydrophobic organic matter polluted soil by using a fertilizing gun according to the interval distance of 1-3 meters, wherein the injection depth is 0.6-0.8 m;
(2) then applying the injected curing agent into the surface layer of the soil polluted by the hydrophobic organic matter by adopting a flushing irrigation method;
(3) and finally, carrying out watering maintenance on the repaired contaminated soil area for 21-35 days, and repairing the hydrophobic organic matter contaminated soil.
According to the invention, in the step (1), the injection amount of the curing agent is 30-40% of the maximum water holding capacity of the hydrophobic organic matter contaminated soil.
According to the invention, in the step (2), the application amount of the curing agent is 50-70% of the maximum water holding capacity of the hydrophobic organic matter polluted soil.
Preferably, in step (3), the optimal watering maintenance time for repairing the contaminated soil area is 28 days.
All% referred to in the present invention are weight percentages unless otherwise indicated. The starting materials used in the present invention are not particularly specified and are all conventionally commercially available.
When the soil curing agent is used, the addition amount of the curing agent is changed according to different pollution degrees of hydrophobic organic pollutants, the higher the pollution degree of the hydrophobic organic pollutants of the soil is, the higher the addition amount of the curing agent is, and the liquid-solid ratio of the curing agent to the soil is increased along with the pollution degree of the hydrophobic organic pollutants of the soil.
Compared with the prior art, the invention has the following advantages:
1. the key raw material of the curing agent is an oil gelling agent, the oil gelling agent contains a large number of amido bonds, a large number of intermolecular hydrogen bonds can be formed to form fibrous aggregates, after hydrophobic organic pollutants are contacted in soil, the fibrous aggregates are mutually combined and three-dimensionally by virtue of Van der Waals force to form oil-soluble gel with the hydrophobic organic pollutants, and the formed gel can further adsorb the hydrophobic organic pollutants to enrich and fix the hydrophobic organic pollutants. Activated humic acid in the curing agent has surface activity and can be adsorbed around oil-soluble gel to form a gas-solid interface, enzymes of the microorganism bacterium for degrading hydrophobic organic matters can not be dissolved in water or oil, but have very high activity in the gas-solid interface, so that the increase of the gas-solid interface is beneficial to the degradation of the hydrophobic organic matters by the microorganism degradation microbial inoculum to hydrophobic organic pollutants.
2. After the curing agent is used for repairing, the oil gelling agent, the activated humic acid and the thickening material remained in the soil are easy to degrade, and the soil cannot be secondarily polluted. The curing agent also has good biocompatibility, can stimulate the growth of plants to a certain degree, improve the content of organic matters in soil, promote the formation of a soil aggregation structure and improve soil hardening. After the activated humic acid is applied to soil as an organic carbon source, the original soil hardening condition can be improved, various physical and chemical indexes such as soil organic matters, porosity and the like are increased, and the absorption of nitrogen, phosphorus, potassium and light trace elements in the soil by plants is promoted, so that the dual effects of solidifying and degrading hydrophobic organic pollutants, guaranteeing the safety of grains, and increasing the soil fertility and the yield per mu are achieved. Meanwhile, the method provides technical support for protecting farmland environment and promoting sustainable development of facility agriculture.
Detailed Description
The present invention is further illustrated by, but is not limited to, the following examples.
The raw materials used in the examples are illustrated below:
12-hydroxystearic acid, N-lauroyl-L-glutamic acid, D-alanine, L-alanine, diethyl aluminum phosphate: fine granular, which is sold by chemical reagent company Limited of the national drug group, the content is more than or equal to 99 percent,
activating humic acid: brown black powder, the activation method adopts a sulfonation method, the activation method is provided by Jinzheng ecological engineering group company Limited, the content is more than or equal to 99 percent,
microbial degradation microbial inoculum (including pseudomonas, mycobacterium, botrytis cinerea): is sold by Tianyi biotechnology development limited company in Jiangxi province,
sodium carboxymethylcellulose: powdered, available from chemical Limited of Jinan Haipu.
In the examples, the soil contaminated with hydrophobic organic substances was obtained from a sample of soil around a steel plant of Jinan, Shandong, 100m2The content of hydrophobic organic matter in soil was measured according to the method specified in "solid waste leaching toxicity leaching method sulfuric acid-nitric acid method" (HJ/T299-2007). The monitoring result is that the content range of the benzene is ND-1.30 mg/kg, the average value is 0.43mg/kg, the standard value of the cultural residential land is 0.92mg/kg, and the maximum exceeding multiple is 1.413; the content range of the toluene is ND-130 mg/kg, and the standard value of the cultural residential land is 1200mg/kg and does not exceed the standard; the content range of the styrene is ND-145 mg/kg, and the standard value of the cultural residential land is 1290mg/kg and does not exceed the standard; the content range of the dimethylbenzene is ND-667 mg/kg, the standard value of the cultural residential land is 554mg/kg, and the maximum standard-exceeding multiple is 1.413(ii) a The naphthalene content range is ND-146 mg/kg, the standard value of cultural residential land is 23mg/kg, and the maximum standard-exceeding multiple is 6.35; the content range of the phenanthrene is ND-67.1 mg/kg, the standard value of the cultural residential land is 5mg/kg, and the maximum exceeding multiple is 13.42; the content range of the pyrene is ND-51.4 mg/kg, the standard value of the cultural residential land is 50mg/kg, and the maximum standard-exceeding multiple is 1.028; the benzopyrene content range is ND-24.3 mg/kg, the standard value of the cultural residential land is 0.52mg/kg, and the maximum overproof multiple is 46.73.
Example 1:
the curing agent for repairing the soil polluted by the hydrophobic organic matter is an oil gelling agent, activated humic acid, a microbial degradation microbial inoculum, a thickening agent and water in a weight ratio of 0.2: 1: 0.5: 1.3: 97 to get a mixed solution. Wherein the oil gelling agent is prepared from 12-hydroxystearic acid and N-lauroyl-L-glutamic acid according to the mass ratio of 1: 1 in combination; the microbial degradation microbial inoculum is pseudomonas.
Adding the oil gelling agent and the activated humic acid into water, stirring and mixing uniformly, then adding the thickening agent, mixing uniformly, and finally adding the microbial degradation microbial inoculum to obtain the curing agent for repairing the soil polluted by the hydrophobic organic matters.
The method for repairing the hydrophobic organic matter contaminated soil by using the curing agent comprises the following steps:
(1) firstly, injecting the curing agent into the hydrophobic organic matter contaminated soil by using a fertilizing gun according to the interval distance of 2 meters, wherein the injection depth is 0.6m, and the injection amount is 30% of the maximum water holding capacity of the hydrophobic organic matter contaminated soil;
(2) then applying a curing agent to the surface layer of the hydrophobic organic matter polluted soil by adopting a flushing irrigation method, wherein the application amount of the curing agent is 50% of the maximum water holding capacity of the hydrophobic organic matter polluted soil;
(3) and finally, watering and maintaining the repaired contaminated soil area for 28 days, so that the hydrophobic organic matter contaminated soil can be repaired.
The concentrations of benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene in the hydrophobic organic matter polluted soil repaired and maintained by using the curing agent are measured, and the average concentrations of the benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene after treatment are respectively reduced by 60%, 63%, 50%, 48%, 59%, 73%, 68% and 71%.
Example 2
The curing agent for repairing the soil polluted by the hydrophobic organic matter is an oil gelling agent, activated humic acid, a microbial degradation microbial inoculum, a thickening agent and water in a weight ratio of 0.3: 2.4: 0.5: 1.8: 95, and (b) mixing the solution. Wherein the oil gelling agent is prepared from D-alanine and L-alanine according to the mass ratio of 2: 1 in combination; the microbial degradation microbial inoculum is mycobacterium.
Adding the oil gelling agent and the activated humic acid into water, stirring and mixing uniformly, then adding the thickening agent, mixing uniformly, and finally adding the microbial degradation microbial inoculum to obtain the curing agent for repairing the soil polluted by the hydrophobic organic matters.
The method for repairing the hydrophobic organic matter contaminated soil by using the curing agent comprises the following steps:
(1) firstly, injecting the curing agent into the hydrophobic organic matter contaminated soil by using a fertilizing gun according to the interval distance of 2 meters, wherein the injection depth is 0.7m, and the injection amount is 40% of the maximum water holding capacity of the hydrophobic organic matter contaminated soil;
(2) then applying a curing agent to the surface layer of the hydrophobic organic matter polluted soil by adopting a flushing irrigation method, wherein the application amount of the curing agent is 60% of the maximum water holding capacity of the hydrophobic organic matter polluted soil;
(3) and finally, watering and maintaining the repaired contaminated soil area for 28 days, so that the hydrophobic organic matter contaminated soil can be repaired.
The concentrations of benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene in the hydrophobic organic matter polluted soil repaired and maintained by using the curing agent are measured, and the average concentrations of the benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene after treatment are respectively reduced by 58%, 61%, 64%, 61%, 71%, 75%, 73% and 81%.
Example 3
The curing agent for repairing the soil polluted by the hydrophobic organic matter is an oil gelling agent, activated humic acid, a microbial degradation microbial inoculum, a thickening agent and water in a weight ratio of 0.5: 7: 0.5: 2: 90, respectively. Wherein the oil gelling agent is prepared from N-lauroyl-L-glutamic acid and diethyl aluminum phosphate according to the mass ratio of 1: 3 in combination; the microbial degradation microbial inoculum is botrytis cinerea.
Adding the oil gelling agent and the activated humic acid into water, stirring and mixing uniformly, then adding the thickening agent, mixing uniformly, and finally adding the microbial degradation microbial inoculum to obtain the curing agent for repairing the soil polluted by the hydrophobic organic matters.
The method for repairing the hydrophobic organic matter contaminated soil by using the curing agent comprises the following steps:
(1) firstly, injecting the curing agent into the hydrophobic organic matter contaminated soil by using a fertilizing gun according to the interval distance of 2 meters, wherein the injection depth is 0.8m, and the injection amount is 40% of the maximum water holding capacity of the hydrophobic organic matter contaminated soil;
(2) then applying a curing agent to the surface layer of the hydrophobic organic matter polluted soil by adopting a flushing irrigation method, wherein the application amount of the curing agent is 70% of the maximum water holding capacity of the hydrophobic organic matter polluted soil;
(3) and finally, watering and maintaining the repaired contaminated soil area for 28 days, so that the hydrophobic organic matter contaminated soil can be repaired.
The concentrations of benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene in the hydrophobic organic matter polluted soil repaired and maintained by using the curing agent are measured, and the average concentrations of the benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene after treatment are respectively reduced by 77%, 75%, 72%, 64%, 69%, 83%, 88% and 93%.
Comparative example 1:
the curing agent for repairing the soil polluted by the hydrophobic organic matter is prepared from activated humic acid, a microbial degradation microbial inoculum, a thickening agent and water in a weight ratio of 1: 0.7: 1.3: 97 to get a mixed solution. Wherein the microbial degradation microbial inoculum is Botrytis cinerea.
Adding activated humic acid into water, stirring and mixing uniformly, then adding a thickening agent, mixing uniformly, and finally adding a microbial degradation microbial inoculum to obtain the curing agent for repairing the soil polluted by the hydrophobic organic matters.
The method for repairing the hydrophobic organic matter contaminated soil by using the curing agent comprises the following steps:
(1) firstly, injecting the curing agent into the hydrophobic organic matter contaminated soil by using a fertilizing gun according to the interval distance of 2 meters, wherein the injection depth is 0.6m, and the injection amount is 30% of the maximum water holding capacity of the hydrophobic organic matter contaminated soil;
(2) then applying a curing agent to the surface layer of the hydrophobic organic matter polluted soil by adopting a flushing irrigation method, wherein the application amount of the curing agent is 50% of the maximum water holding capacity of the hydrophobic organic matter polluted soil;
(3) and finally, watering and maintaining the repaired contaminated soil area for 28 days, so that the hydrophobic organic matter contaminated soil can be repaired.
The concentrations of benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene in the hydrophobic organic matter polluted soil repaired and maintained by using the curing agent are measured, and the average concentrations of the benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene after treatment are respectively reduced by 28%, 33%, 24%, 17%, 29%, 48%, 37% and 43%.
Comparative example 2:
the curing agent for repairing the hydrophobic organic matter contaminated soil is prepared from an oil gelling agent, a microbial degradation microbial inoculum, a thickening agent and water in a weight ratio of 0.2: 0.5: 1.3: 98. Wherein the oil gelling agent is prepared from 12-hydroxystearic acid and N-lauroyl-L-glutamic acid according to the mass ratio of 1: 1 in combination; the microbial degradation microbial inoculum is pseudomonas bacteria.
And adding the oil gelling agent into water, stirring and mixing uniformly, then adding the thickening agent, mixing uniformly, and finally adding the microbial degradation microbial inoculum to obtain the curing agent for repairing the hydrophobic organic matter polluted soil.
The method for repairing the hydrophobic organic matter contaminated soil by using the curing agent comprises the following steps:
(1) firstly, injecting the curing agent into the hydrophobic organic matter contaminated soil by using a fertilizing gun according to the interval distance of 2 meters, wherein the injection depth is 0.6m, and the injection amount is 30% of the maximum water holding capacity of the hydrophobic organic matter contaminated soil;
(2) then applying a curing agent to the surface layer of the hydrophobic organic matter polluted soil by adopting a flushing irrigation method, wherein the application amount of the curing agent is 50% of the maximum water holding capacity of the hydrophobic organic matter polluted soil;
(3) and finally, watering and maintaining the repaired contaminated soil area for 28 days, so that the hydrophobic organic matter contaminated soil can be repaired.
The concentrations of benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene in the hydrophobic organic matter polluted soil repaired and maintained by using the curing agent are measured, and the average concentrations of the benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene after treatment are respectively reduced by 33%, 38%, 25%, 38%, 39%, 43%, 38% and 41%.
Comparative example 3:
the curing agent for repairing the soil polluted by the hydrophobic organic matters is an oil gelling agent, activated humic acid, a thickening agent and water in a weight ratio of 0.2: 1: 1.3: 97.5. Wherein the oil gelling agent is prepared from 12-hydroxystearic acid and N-lauroyl-L-glutamic acid according to the mass ratio of 1: 1 in combination.
And adding the oil gelling agent and the activated humic acid into water, stirring and mixing uniformly, and then adding the thickening agent and mixing uniformly to obtain the curing agent for repairing the soil polluted by the hydrophobic organic matters.
The method for repairing the hydrophobic organic matter contaminated soil by using the curing agent comprises the following steps:
(1) firstly, injecting the curing agent into the hydrophobic organic matter contaminated soil by using a fertilizing gun according to the interval distance of 2 meters, wherein the injection depth is 0.6m, and the injection amount is 30% of the maximum water holding capacity of the hydrophobic organic matter contaminated soil;
(2) then applying a curing agent to the surface layer of the hydrophobic organic matter polluted soil by adopting a flushing irrigation method, wherein the application amount of the curing agent is 50% of the maximum water holding capacity of the hydrophobic organic matter polluted soil;
(3) and finally, watering and maintaining the repaired contaminated soil area for 28 days, so that the hydrophobic organic matter contaminated soil can be repaired.
The concentrations of benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene in the hydrophobic organic matter polluted soil repaired and maintained by using the curing agent are measured, and the average concentrations of the benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene and benzopyrene after treatment are respectively reduced by 37%, 41%, 34%, 43%, 40%, 46%, 39% and 35%.
Claims (7)
1. A curing agent for repairing hydrophobic organic matter contaminated soil is a mixed aqueous solution containing an oil gelling agent, activated humic acid and a microbial degradation microbial inoculum; the curing agent also contains a thickening agent;
the oil gelling agent is one or the combination of two of 12-hydroxystearic acid and N-lauroyl-L-glutamic acid; the activated humic acid is humic acid activated by a sulfonation method, and the water solubility of the activated humic acid is more than or equal to 97 percent; the microbial degradation microbial inoculum comprises one or the combination of more than two of pseudomonas, mycobacterium and botrytis cinerea;
the thickening agent is sodium carboxymethyl cellulose;
the curing agent is an oil gelling agent, activated humic acid, a microbial degradation microbial inoculum, a thickening agent and water, and the weight ratio is (0.2-0.5): (1-8): 0.5: (0.5-2): (90-98).
2. The curing agent for remediating hydrophobic organic matter contaminated soil as recited in claim 1, wherein the hydrophobic organic contaminants in the hydrophobic organic matter contaminated soil are one or any combination of two or more of benzene, toluene, styrene, xylene, naphthalene, phenanthrene, pyrene, and benzopyrene.
3. The preparation method of the curing agent for remediating the soil polluted by the hydrophobic organic matter as claimed in claim 1, wherein the oil gelling agent and the activated humic acid are added into water, stirred and mixed uniformly, then the thickener is added, mixed uniformly, and finally the microbial degradation microbial inoculum is added, so that the curing agent for remediating the soil polluted by the hydrophobic organic matter is obtained.
4. The method for remediating hydrophobic organic matter contaminated soil with the solidifying agent as set forth in claim 1, comprising the steps of:
(1) firstly, injecting the curing agent into the hydrophobic organic matter polluted soil by using a fertilizing gun according to the interval distance of 1-3 meters, wherein the injection depth is 0.6-0.8 m;
(2) then applying the injected curing agent into the surface layer of the soil polluted by the hydrophobic organic matter by adopting a flushing irrigation method;
(3) and finally, carrying out watering maintenance on the repaired contaminated soil area for 21-35 days, and repairing the hydrophobic organic matter contaminated soil.
5. The method for remediating hydrophobic organic matter contaminated soil with the curing agent as recited in claim 4, wherein in the step (1), the curing agent is injected in an amount of 30-40% of the maximum water holding capacity of the hydrophobic organic matter contaminated soil.
6. The method for remediating hydrophobic organic matter contaminated soil with the curing agent as recited in claim 4, wherein in the step (2), the curing agent is applied in an amount of 50-70% of the maximum water holding capacity of the hydrophobic organic matter contaminated soil.
7. The method for remediating hydrophobic organic matter contaminated soil with the curing agent as recited in claim 4, wherein the optimal watering and curing time for remediating the contaminated soil area in step (3) is 28 days.
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