Method for remediating petroleum-contaminated soil through coupling charcoal-loaded surface active agent and microorganism plant
A surfactant and oil-polluted technology, applied in the field of oil-contaminated soil treatment, can solve problems such as secondary pollution, difficulty in completely eliminating oil pollutants, and limited remediation capabilities of oil-polluted soil, achieving good results
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Embodiment 1
[0030] A method for biochar-loaded surfactant coupling microbial phytoremediation of oil-contaminated soil, comprising the following steps:
[0031] S1, collect rice stalks and corn stalks respectively, dry them at 80°C and crush them into 1-2 cm segments with a pulverizer; then mix the crushed straws and place them in a biochar furnace, and dry them at 450°C Oxygen pyrolysis for 3 hours, cooling to room temperature after pyrolysis, and preparing biochar;
[0032] The obtained biochar is soaked into a 4g / L sodium lauryl sulfate aqueous solution, an 8g / L triton x-100 aqueous solution, and a 4g / L rhamnose aqueous solution according to a volume ratio of 1:1:1. In the resulting mixed solution, magnetically stirred for 1 h, and dried at 75°C after the stirring was completed, to obtain the biochar-loaded surfactant;
[0033] S2, biochar loaded surfactant according to 300g / m 2 The amount of application was evenly applied to the surface layer of oil-contaminated soil (the moisture c...
Embodiment 2
[0039] A method for biochar-loaded surfactant coupling microbial phytoremediation of oil-contaminated soil, comprising the following steps:
[0040] S1, collect wheat straw and rape straw respectively, dry them at 78°C and crush them into 1-2cm segments with a pulverizer; then mix the above crushed straws and place them in a biochar furnace, and anoxic at 400°C Pyrolysis for 3 hours, cooling to room temperature after completion of pyrolysis to prepare biochar;
[0041] Put the obtained biochar into 5g / L sodium lauryl sulfate aqueous solution, 9g / L triton x-100 aqueous solution, and 5g / L rhamnose aqueous solution according to the volume ratio of 1:2:1. In the mixed solution, magnetically stirred for 1 hour, and then dried at 75°C after the stirring was completed, to obtain the biochar-loaded surfactant;
[0042] S2, biochar loaded surfactant according to 500g / m 2 The amount of application was evenly applied to the surface layer of petroleum-contaminated soil (the moisture con...
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