ENERGY-SAVING IN-SITU STEAM THERMAL DESORPTION PROCESS FOR REMEDIATING PESTICIDE CONTAMINATED SITES
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United States of America Patent
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Jan 18, 2024
app pub date -
Apr 5, 2023
filing date -
Apr 5, 2023
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An energy-saving in-situ steam thermal desorption process for remediating pesticide contaminated sites comprises S1, determining a contaminated layer; S2, primary steam injection; S3, secondary steam injection and regulator injection; wherein the regulator comprises the following components in parts by weight: 0.2-0.8 parts by weight of hyper-thermophilic microbial agent, 0.5-0.9 parts by weight of carbamyl phosphate, 2-3 parts by weight of cyclic 2,3-diphosphoglycerate, 3-4 parts by weight of ethylenediamine tetraacetic acid, 15-17 parts by weight of wort, and 5-6 parts by weight of sodium octadecyl sulfate; S4, tertiary steam injection; S5, conservation. The method for remediating pesticide chemical contaminated sites using the thermal desorption technology combines the in-situ steam thermal desorption technology with hyper-thermophilic microorganisms, the hyper-thermophilic microorganisms have good adaptability to high-temperature environment, good thermal stability and high-temperature catalytic activity, and the remediation effect on soil can be greatly improved by combining the microorganisms with hot steam.
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