Method for treatment of waste water
US4163715A · kind A · utility
4Cited by
7References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 3, 1977 |
| Grant date | Aug 7, 1979 |
| Priority date | — |
| Expiry date | Oct 3, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/917
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
In removing color components and COD components from waste water, the waste water is treated with an inorganic adsorbent, the mixture thus obtained is subjected to a sedimentation treatment to separate the adsorbent adsorbed the color and COD components as a slurry layer, and a portion of the adsorbent slurry is returned to the adsorption step and the remainder thereof is subjected to a regenerating treatment to recycle as an adsorbent. Pollution-free water is effectively obtained by the above method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.