abstract |
The present invention is a heavy metal chelate compound containing a kind of chitosan derivative, Component Content (wt%) Chitosan derivative having at least one dithioformate group 1-100 Polyamine derivatives having at least one dithioformate group 0-99 Is provided. Heavy metal chelate compounds are applied to the treatment of wastewater containing heavy metal ions, sludge, garbage incineration ash and soil contaminated with heavy metal ions. |