Water treatment for removing PFAS
US11780746B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2020 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Sep 5, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/37
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An above-ground low-energy method of dewatering highly contaminated waste e.g. leachate contaminated with at least a first group of contaminants and PFAS is described. The method comprises the step of removing the PFAS before removing the first group of contaminants. The removal of PFAS is undertaken by actively aerating the contaminated waste comprising PFAS to produce a waste stream comprising a concentration of PFAS and a liquid stream having at least some of the first group of contaminants. The one or more liquid streams are separated from the waste streams so as to dewater the contaminated waste. Optionally, the liquid streams are treated to remove the first group of contaminants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.