Water treatment system and process
US6398965B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1998 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Mar 31, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/90
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A water treatment system and process for removing weakly ionized and/or organic materials from the water by intra-system pH adjustment. An exemplary embodiment of the system includes an inlet through which a feedstream passes into a first chemical treating unit wherein the pH of the feedstream is maintained below about 7 to substantially reduce a concentration of weakly basic components in the water by chemical conversion to a more ionized state. A first water treatment unit is positioned downstream of the first chemical treating unit to substantially remove ionized components in the stream, and produce a first product stream. In various embodiments, the first water treatment unit can be selected from the group consisting of a media filter unit, a water softener unit, a dechlorination unit, and combinations thereof. The first product stream is treated downstream of the first water treatment unit in a second chemical treating unit to maintain the pH of the first product stream above about 7 to substantially reduce a concentration of weakly acidic components in the water by chemical conversion to a more ionized state. A second water treatment unit is positioned downstream of the seco…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.