Abstract:
To explore the feasibility of heavy metal enrichment and remediation in smelting wastewater tank area.one native plants,Vetch,were selected to test in the polluted area. The accumulation and characteristics of 7 heavy metal elements,including Cd,As,Cr,Cu,Pb and Zn,were studied. The accumulation contents of different heavy metals in Vetch were different,and the accumulation contents of different heavy metals in Vetch were the largest in the leaf,which were 2. 92,22. 18,9. 8,22. 66,18. 19,and 62. 31 mg/kg,respectively. The enrichment coefficient of Cd,Cu,and Zn reached 0. 52,0. 23,and 0. 54 respectively. The biological transfer coefficients of different heavy metals were 10. 28,31. 48,18. 38,7. 98,32. 18,and 13. 84 respectively,among which the transfer capacity of As and Pb was the strongest. Heavy metal elements in the soil could be enriched in a large amount and transferred to the leaf of Vetch.