Water clarification
US4456534A · kind A · utility
7Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1982 |
| Grant date | Jun 26, 1984 |
| Priority date | — |
| Expiry date | Jul 20, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/908
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
This invention is directed to an improved process for clarifying a waste water stream containing waste synthetic polymeric material in latex form. The process comprises treating the waste water stream in sequence with calcium chloride and a cationic flocculant, calcium, potassium or sodium hydroxide, and an anionic flocculant. The aggregated polymeric material which results is then separated from the waste water and an essentially clear waste water stream is thereby provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.