Orthophosphate-containing desalination scale inhibitors
US4634532A · kind A · utility
22Cited by
15References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1985 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Sep 25, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The instant invention is directed to a process for the control of scale formation and deposition in thermal or reverse osmosis membrane desalination plants, comprising adding to the water 0.1 to 100 ppm of (a) a water soluble orthophosphate and (b) at least one compound selected from the group consisting of water soluble polycarboxylates, phosphonates, phosphates, sulfonates and polyamides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.