Repair method of heavy metal nickel contaminated soil
The invention discloses a repair method of heavy metal nickel contaminated soil. The repair method includes the steps: A spraying 10% of acetate solution to the nickel contaminated soil to perform drip washing; B standing for 12h at normal temperature; C separating the drip washed soil from wastewat...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The invention discloses a repair method of heavy metal nickel contaminated soil. The repair method includes the steps: A spraying 10% of acetate solution to the nickel contaminated soil to perform drip washing; B standing for 12h at normal temperature; C separating the drip washed soil from wastewater containing heavy metals; D removing residual nickel ions in the drip washed contaminated soil by an electric potential migration method. The mass ratio of the acetate solution to the nickel contaminated soil is 1:1. Compared with an existing multiple drip washing method and an ion migration method, the repair method has the advantages that heavy metal removing rate is high, more energy is saved, and soil fertility is less affected. |
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