Repairing method for high-concentration petroleum hydrocarbon contaminated soil
A technology of polluted soil and remediation method, which is applied in the field of remediation of high-concentration petroleum hydrocarbon-contaminated soil, which can solve the problems of polluted soil and achieve the effects of reducing emissions, readily available materials, and low cost
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Embodiment 1
[0032] A new method for remediation of high-concentration petroleum hydrocarbon-contaminated soil mainly includes the following steps:
[0033] 1) Pretreatment
[0034] 1.1) Use a crusher to crush and sieve the contaminated soil (the initial oil content of the sample is 23.01%) to obtain contaminated soil with a particle size of less than 1 cm;
[0035] 1.2) The crushed and screened polluted soil obtained in step 1.1) is weighed to obtain 50 g of soil;
[0036] 2) Soil pollutant stripping treatment
[0037] 2.1) Mix sodium silicate pentahydrate and water at a ratio of 1:4, stir evenly to make a solution;
[0038] 2.2) Mix fatty alcohol polyoxyethylene ether and octylphenol polyoxyethylene ether at 4:1 and stir evenly;
[0039] 2.3) Mix the two agents obtained in steps 2.1) and 2.2) at a ratio of 1:1, and stir evenly;
[0040] 2.4) Add the mixed medicament obtained in step 2.3) into 300mL water to make a medicament solution, wherein the medicament concentration is 5%;
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Embodiment 2
[0047] A new method for repairing petroleum hydrocarbon contaminated soil is characterized in that it mainly includes the following steps:
[0048] 1) Pretreatment
[0049] 1.1) Use a crusher to crush and sieve the contaminated soil (the initial oil content of the sample is 7.59%) to obtain contaminated soil with a particle size of less than 1 cm;
[0050] 1.2) The crushed and screened polluted soil obtained in step 1.1) is weighed to obtain 50 g of soil;
[0051] 2) Soil pollutant stripping treatment
[0052] 2.1) Mix sodium silicate pentahydrate and water at a ratio of 1:2, stir evenly to make a solution;
[0053] 2.2) Mix fatty alcohol polyoxyethylene ether and octylphenol polyoxyethylene ether at 2:1 and stir evenly;
[0054]2.3) Mix the two agents obtained in steps 2.1) and 2.2) at a ratio of 1:1, and stir evenly;
[0055] 2.4) Add the mixed medicament obtained in step 2.3) to 150mL water to make a medicament solution, wherein the medicament concentration is 3%;
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