Composition for treating high-concentration organophosphorus pesticide-polluted soil and application thereof
A technology of organophosphorus pesticides and polluted soil, applied in the field of soil pollution remediation, can solve the problems of difficult soil remediation, and achieve high utilization rate, response time, and good durability
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[0027] Example 1:
[0028]Under the condition of high water-soil mass ratio (5:1), the experiment compared the removal effect of different concentrations of sodium persulfate and sodium hydroxide on the removal of high-concentration organophosphorus pesticides in the site soil.
[0029] A 250mL brown bottle with a polytetrafluoroethylene stopper was used as the reaction vessel, 10g of contaminated soil was weighed into the reaction bottle, 50mL of sodium hydroxide solutions of different concentrations were added, and then solid sodium persulfate of different quality was added to ensure that the reaction solution contained The initial concentrations of sodium hydroxide were 2.0, 5.0, and 7.0 M, respectively, and the initial concentrations of sodium persulfate were 0.084, 0.21, and 0.42, respectively. The reaction was performed for 3 days, and it was placed in a constant temperature incubator (30 °C), and shaken by hand every day. 2 times. In addition, high concentration sodium...
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[0036] Example 2:
[0037] In order to be closer to the actual site contaminated soil remediation conditions, we increased the water-soil ratio to 1:1, and investigated the removal effects of different concentrations of sodium persulfate and sodium hydroxide on high-concentration organophosphorus pesticides in this mud state.
[0038] A 250mL brown bottle with a polytetrafluoroethylene stopper was used as the reaction vessel, 50g of contaminated soil was weighed into the reaction bottle, 50mL of sodium hydroxide solutions of different concentrations were added, and then sodium persulfate solids of different qualities were added to ensure that the reaction solution contained The initial concentrations of sodium hydroxide were 5.0, 7.0, and 10.0 M, respectively, and the initial concentrations of sodium persulfate were 0.084, 0.21, and 0.42, respectively. The reaction was carried out for 7 days, and it was placed in a constant temperature incubator (25 °C), and shaken by hand ever...
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[0045] Example 3:
[0046] In order to evaluate the applicability of PS / NaOH, the removal effect of the oxidation system on high-concentration organophosphorus pesticides in soil was investigated.
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