Curing agent for efficiently repairing arsenic-polluted soil and application thereof
An arsenic pollution and curing agent technology, applied in the restoration of polluted soil and other directions, can solve problems such as soil environmental balance damage, and achieve the effect of facilitating subsequent utilization, good effect and simple operation.
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Embodiment 1
[0019] Provides a high-efficiency curing agent for repairing arsenic-contaminated soil, including 20mL of ammonia water, 80g of ferrous sulfate and 40g of sepiolite; wherein the concentration of ammonia water is 25-28%, and the particle size of sepiolite is 100 mesh.
[0020] The application of the above-mentioned curing agent for repairing arsenic-contaminated soil in arsenic-contaminated soil is specifically:
[0021] Stir the arsenic-contaminated soil (the content of arsenic is 500mg / kg) to loosen it, and then add ammonia water, ferrous sulfate and sepiolite in the curing agent to the soil respectively, wherein the amount of curing agent added is: the concentration of ammonia water 20mL / kg soil, ferrous sulfate 80g / kg soil, sepiolite 40g / kg soil, and stir the soil to make it mix with the curing agent, then adjust the soil moisture content to maintain 35%, and the measured soil pH is 8.3, Use 3% dilute hydrochloric acid to adjust soil pH to keep it in the range of 6-7, and c...
Embodiment 2
[0024] Provides a high-efficiency curing agent for repairing arsenic-contaminated soil, including 15mL of ammonia water, 70g of ferrous sulfate, and 35g of sepiolite; wherein the concentration of ammonia water is 25-28%, and the particle size of sepiolite is 100 mesh.
[0025] The application of the above-mentioned curing agent for repairing arsenic-contaminated soil in arsenic-contaminated soil is specifically:
[0026] Stir the arsenic-contaminated soil (the content of arsenic is 500mg / kg) to loosen it, and then add ammonia water, ferrous sulfate and sepiolite in the curing agent to the soil respectively, wherein the amount of curing agent added is: the concentration of ammonia water 15mL / kg soil, ferrous sulfate 70g / kg soil, sepiolite 35g / kg soil, and stir the soil to make it mix with the curing agent, then adjust the soil moisture content to maintain 35%, the pH of the measured soil is 8.2, Use 3% dilute hydrochloric acid solution to adjust soil pH to keep it in the range ...
Embodiment 3
[0029] A curing agent for efficiently repairing arsenic-contaminated soil is provided, including 25mL of ammonia water, 75g of ferrous sulfate, and 45g of sepiolite; wherein the concentration of ammonia water is 25-28%, and the particle size of sepiolite is 100 mesh.
[0030] The application of the above-mentioned curing agent for repairing arsenic-contaminated soil in arsenic-contaminated soil is specifically:
[0031] Stir the arsenic-contaminated soil (the content of arsenic is 500mg / kg) to loosen it, and then add ammonia water, ferrous sulfate and sepiolite in the curing agent to the soil respectively, wherein the amount of curing agent added is: the concentration of ammonia water 25mL / kg soil, ferrous sulfate 75g / kg soil, sepiolite 45g / kg soil, and stir the soil to make it mix with the curing agent, then adjust the soil moisture content to maintain 35%, the pH of the measured soil is 8.9, Use 3% dilute hydrochloric acid solution to adjust soil pH to keep it in the range o...
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