Method for repairing nitrobenzene compound contaminated soil by utilizing flax
A technology for nitrobenzene and polluted soil, applied in the field of phytoremediation, can solve problems such as in-situ remediation of unsuitable contaminated soil, damage to soil structure, secondary pollution, etc., achieve outstanding remediation effect, restore soil quality, slow down wind erosion and water erosion Effect
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Embodiment 1
[0055] Embodiment 1 utilizes flax to repair the method for nitrobenzene compounds polluted soil, comprises the following steps:
[0056] (1) After the mixture of the soil polluted by red water, lime soil and urban dewatered sludge is mixed evenly according to the dry weight ratio (kg / kg) of 1:14.5, the mixed soil is obtained; wherein in the mixture, lime soil and urban dewatered sludge The dry weight ratio of the dewatered sludge was 13.5:1 (kg / kg).
[0057] (2) Add 0.01kg of wheat bran per kilogram of mixed soil into the mixed soil; and mix 10g of ferrous sulfate per kilogram of red water polluted soil to make the pH value of the mixed soil neutral, and then use open air on the mixed soil Cultivation of flax.
[0058] (3) The flax is managed according to the conventional planting method. When the growth period of the flax is over, the flax can be cut.
Embodiment 2
[0059] Embodiment 2 utilizes flax to repair the method for nitrobenzene compound polluted soil, comprises the following steps:
[0060] (1) After the mixture of the soil polluted by red water, lime soil and urban dewatered sludge is mixed evenly according to the dry weight ratio (kg / kg) of 2:13.5, the mixed soil is obtained; wherein in the mixture, lime soil and urban dewatered sludge The dry weight ratio of the dewatered sludge was 12.5:1 (kg / kg).
[0061] (2) Add 0.02kg of wheat bran per kilogram of mixed soil into the mixed soil; and mix 10g of ferrous sulfate per kilogram of red water polluted soil to make the pH value of the mixed soil neutral, and then use open air on the mixed soil Cultivation of flax.
[0062] (3) The flax is managed according to the conventional planting method. When the growth period of the flax is over, the flax can be cut.
Embodiment 3
[0063] Embodiment 3 utilizes flax to repair the method for nitrobenzene compound polluted soil, comprises the following steps:
[0064] (1) After the mixture of the soil polluted by red water and lime soil and urban dewatered sludge is mixed evenly according to the dry weight ratio (kg / kg) of 3:12.5, the mixed soil is obtained; wherein in the mixture, lime soil and urban dewatered sludge The dry weight ratio of the dewatered sludge was 11.5:1 (kg / kg).
[0065] (2) Add 0.015kg of wheat bran per kilogram of mixed soil into the mixed soil; and mix 10g of ferrous sulfate per kilogram of red water-contaminated soil to make the pH of the mixed soil neutral, and then use open air on the mixed soil Cultivation of flax.
[0066] (3) The flax is managed according to the conventional planting method. When the growth period of the flax is over, the flax can be cut.
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