发明名称 |
Process for removing lead from sandblasting wastes containing paint chips |
摘要 |
Heavy metals are efficiently removed from contaminated soil by a process which comprises leaching or washing the soil with a mild leachant solution comprised of an aqueous solution of an acid and a salt. Heavy metals are also efficiently removed from paint chips by washing with an aqueous acid. The heavy metals are recovered from the leachant be cementation.
|
申请公布号 |
US5660806(A) |
申请公布日期 |
1997.08.26 |
申请号 |
US19950474815 |
申请日期 |
1995.06.07 |
申请人 |
HENKEL CORPORATION |
发明人 |
FRISTAD, WILLIAM E.;VIRNIG, MICHAEL J.;ELLIOTT, DANA K. |
分类号 |
B03B5/00;B09B3/00;B09C1/02;B09C1/10;C01G13/00;C01G21/00;C22B1/00;C22B3/04;C22B3/06;C22B3/16;C22B3/46;C22B7/00;C22B13/00;C22B15/00;C22B25/06;C22B43/00;(IPC1-7):C01G21/00 |
主分类号 |
B03B5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|