Removal of heavy metals from waste streams
US4758353A · kind A · utility
35Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1987 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Jun 19, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/912
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Heavy metals are removed from effluent waters using the sequential steps comprising: PA0 A. Adding a surfactant; PA0 B. pH adjustment; PA0 C. Adding a cationic coagulant; PA0 D. Adding a flocculant; and, PA0 E. Recovering the floc formed by the flocculant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.