Destabilization of sludge with hydrolyzed yam starch flocculants
US4507209A · kind A · utility
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3References
5Claims
0Family size
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Key dates
| Filing date | Dec 16, 1983 |
| Grant date | Mar 26, 1985 |
| Priority date | — |
| Expiry date | Dec 16, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/907
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Certain yam starches hydrolyzed in the presence of insoluble metal salts formed in situ are surprisingly effective flocculants for destabilizing dilute as well as thick sludge suspensions and are particularly effective when used in the treatment of bituminous tar sands tailings and in phosphate slimes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.