Remediation method for pesticide contaminated soil

[0019] Example one:

[0020] 1. Break the soil contaminated by hexachlorocyclopentadiene, add TritonX-100 (50g / L) solution, and mix the soil and the extract at a ratio of 1Kg: 5L;

[0021] 2. Stir fully (5min) and let stand for 25min;

[0022] 3. Carry out solid-liquid separation. After dehydration, the soil and filtrate are collected separately and tested and analyzed.

[0023] The concentration of hexachlorocyclopentadiene in the soil before soil treatment was 186mg / kg, and the degradation rate of hexachlorocyclopentadiene in the soil after treatment was 69.3%.

[0024] Embodiment two:

[0025] 1. Break the soil contaminated by hexachlorocyclopentadiene, add cyclodextrin (50g / L) solution, and mix the soil and the extract at a ratio of 1Kg: 10L;

[0026] 2. Stir fully (5min) and let stand for 25min;

[0027] 3. Carry out solid-liquid separation. After dehydration, the soil and filtrate are collected separately and tested and analyzed.

[0028] The concentration of hexachlorocyclopentadiene in the soil before the soil treatment was 186 mg / kg, and the degradation rate of hexachlorocyclopentadiene in the soil after the treatment was 89.8%.

[0029] Embodiment three:

[0030] 1. Break the soil contaminated by hexachlorocyclopentadiene, add a mixed solution of TritonX-100 (50g / L) and cyclodextrin (50g / L), and mix the soil and the extract at a ratio of 1Kg: 5L;

[0031] 2. Stir fully (5min) and let stand for 25min;

[0032] 3. Carry out solid-liquid separation. After dehydration, the soil and filtrate are collected separately and tested and analyzed.

[0033] The concentration of hexachlorocyclopentadiene in the soil before the soil treatment was 186 mg / kg, and the degradation rate of hexachlorocyclopentadiene in the soil after the treatment was 84.5%.