Composite stabilizer for repairing lead, cadmium and arsenic pollution in acid soil
A composite stabilizer and acidic soil technology, applied in the direction of soil conditioning materials, applications, fertilizer mixtures, etc., can solve the problems of heavy metals, repair effect, large usage, etc., to prevent heavy metals from re-dissolving, preventing secondary pollution, pharmaceuticals The effect of adding a small amount
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Embodiment 1
[0022] Composite stabilizer is configured according to the following ratio:
[0023]
[0024] Add the prepared agent according to 5% of the quality of the polluted soil, add water and stir, keep the moisture content at about 30%, and keep it for 7 days naturally. After leaching in the "Solid Waste Leaching Toxicity Method Horizontal Oscillation Method", use ICP-MS to analyze the Pb , Cd, As concentrations (μg / L) are:
[0025]
[0026] The prepared agent is added at 3% of the quality of the polluted soil, mixed with water, and kept at a moisture content of about 30%, and naturally cured for 7 days. After leaching in the "Solid Waste Leaching Toxicity Method Horizontal Oscillation Method", Pb is obtained by ICP-MS analysis. , Cd, As concentrations (μg / L) are:
[0027]
[0028]
[0029] The prepared agent is added according to 3% of the quality of the polluted soil, mixed with water, and the moisture content is kept at about 30%, and it is naturally maintained for 180 ...
Embodiment 2
[0033] Composite stabilizer is configured according to the following ratio:
[0034]
[0035] The prepared agent is added at 3% of the quality of the polluted soil, mixed with water, and kept at a moisture content of about 30%, and naturally cured for 7 days. After leaching in the "Solid Waste Leaching Toxicity Method Horizontal Oscillation Method", Pb is obtained by ICP-MS analysis. , Cd, As concentrations (μg / L) are:
[0036]
Embodiment 3
[0038] Composite stabilizer is configured according to the following ratio:
[0039]
[0040] The prepared agent is added at 3% of the quality of the polluted soil, mixed with water, and kept at a moisture content of about 30%, and naturally cured for 7 days. After leaching in the "Solid Waste Leaching Toxicity Method Horizontal Oscillation Method", Pb is obtained by ICP-MS analysis. , Cd, As concentrations (μg / L) are:
[0041]
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