Charge neutral biocide dosing control for membrane biofouling control applications
US11772051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2021 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Apr 30, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Biocide can be controllably added to a feed stream for a membrane. The membrane can separate the feed stream into a purified permeate stream and a concentrate stream containing contaminants from the feed stream. In some examples, a charge neutral biocide is introduced into the feed stream at a first addition rate. The concentration of the charge neutral biocide in the permeate stream is measured to provide a measured concentration of the charge neutral biocide in the permeate stream. The addition rate of the charge neutral biocide can be adjusted based on the measured concentration of the charge neutral biocide in the permeate stream to introduce charge neutral biocide into the feed stream at a second addition rate different than the first addition rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.