Removal of heavy metal ions from wastewater
US3947354A · kind A · utility
38Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1975 |
| Grant date | Mar 30, 1976 |
| Priority date | — |
| Expiry date | Apr 18, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/912
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Concentrations of undesirable heavy metals in industrial wastewater are reduced to below or very close to the most stringent aqueous discharge limits. This is accomplished by forming an insoluble metal-polyelectrolyte complex which can be easily and economically removed from the effluent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.