发明名称 |
Method for recovery of heavy metals from highly concentrated wastewater solutions |
摘要 |
Heavy metals are reclaimed from a concentrated wastewater solution containing heavy metal cations and an acid by adding to the wastewater a bed of scrap aluminum in a total amount between about 160% and about 180% of the stoichiometric requirement for complete reduction of the dissolved heavy metal cations to their elemental states and adjusting the acid content of the wastewater to 5% to 20% by volume and allowing the heavy metal cations to react with the scrap aluminum to oxidize the aluminum and to reduce the heavy metal cations to their elemental states thereby producing demetallized wastewater which is neutralized with caustic to produce a treated effluent.
|
申请公布号 |
US5019273(A) |
申请公布日期 |
1991.05.28 |
申请号 |
US19900517335 |
申请日期 |
1990.04.30 |
申请人 |
MIDWEST PRINTED CIRCUITS SERVICES, INC. |
发明人 |
FEHSENFELD, JOSEPH;VUJASIN, BORO |
分类号 |
C02F1/70;C02F9/00 |
主分类号 |
C02F1/70 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|