Remediation method for polluted soil
A technology of polluted soil and remediation method, which is applied in the field of environmental protection to achieve the effects of low kinetic energy consumption, compact process flow and good treatment effect
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Embodiment 1
[0032] A method for remediating contaminated acidic soil, comprising the following steps:
[0033] (1) Pulverization: first use a hammer mill to pulverize the contaminated acidic soil to 40 mesh;
[0034] (2) Screening: Sieve the crushed acidic soil through a 40-mesh sieve with a drum to remove impurities;
[0035] (3) Spraying: Spray the above step 2) into the acidic soil soil, add 0.05% liquid medicine, mix and stir for 20 minutes, then let it stand for 2 hours;
[0036] (4) Sterilization: Mix and heat the acidic soil in the above step 3) with a rotary steamer to 90°C, steam pressure 0.30MPa, and sterilize for 60 minutes;
[0037] (5) Put the pot: Put the soil in the above step 4) to cool to room temperature and put it in the pot;
[0038] (6) Adding organic matter: Add 0.5% tung tree to the soil in the above step 5) and mix evenly to repair the soil.
[0039] The acidic soil pH value described in this example is 5.5.
[0040] The medicinal liquid described in this embod...
Embodiment 2
[0045] A contaminated soil remediation method, comprising the following steps:
[0046] (1) Pulverization: first use a hammer mill to pulverize the contaminated soil to 60 mesh;
[0047] (2) Sieving: use a drum to sieve the crushed soil through a 60-mesh sieve to remove impurities;
[0048](3) Spraying: Spray the above step 2) into the soil and add 0.2% liquid medicine, mix and stir for 30 minutes, then let it stand for 4 hours;
[0049] (4) Sterilization: Mix and heat the soil in the above step 3) to 110°C with a steam pressure of 0.50MPa, and sterilize for 30 minutes;
[0050] (5) Put the pot: Put the soil in the above step 4) to cool to room temperature and put it in the pot;
[0051] (6) Adding organic matter: Add 2.0% Tung Kut to the soil in the above step 5) and mix evenly to repair the soil.
[0052] The pH value of the alkaline soil described in this example is 8.5.
[0053] The liquid medicine described in this embodiment is a mixture of a metal ion chelating agen...
Embodiment 3
[0058] A contaminated soil remediation method, comprising the following steps:
[0059] (1) Pulverization: first use a hammer mill to pulverize the contaminated soil to 50 mesh;
[0060] (2) Sieving: use a drum to sieve the crushed soil through a 50-mesh sieve to remove impurities;
[0061] (3) Spraying: Add 0.15% liquid medicine to the soil in step 2) above, mix and stir for 25 minutes, then let stand for 3 hours;
[0062] (4) Sterilization: Mix and heat the soil in the above step 3) to 100°C with a steam pressure of 0.40MPa, and sterilize for 40 minutes;
[0063] (5) Put the pot: Put the soil in the above step 4) to cool to room temperature and put it in the pot;
[0064] (6) Adding organic matter: add 1.5% tung tree to the soil in the above step 5) and mix evenly to repair the soil.
[0065] The acidic soil pH value described in this example is 5.0.
[0066] The liquid medicine described in this embodiment is a mixture of a metal ion chelating agent and an alkali soluti...
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