Waste water purification system
US4092242A · kind A · utility
9Cited by
10References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1975 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Jun 16, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Waste water containing synthetic detergents (syndets) such as water soluble sulfonates or ethoxylated alcohols is reclaimed for re-use by emulsifying with a water insoluble, high molecular weight, anionic surface active oil, then breaking the emulsion by conventional physical or chemical methods, thereby producing a coherent floc which occludes the syndet and all insoluble matter suspended in the water, then separating the floc from the purified water in a coherent mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.