Water treatment assembly including hyperfiltration module and cation exchange resin
US10040704B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2014 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Oct 29, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2001/425
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A water treatment assembly (10) and method for its operation, comprising a spiral wound hyperfiltration membrane module (12) connected to: i) a feed line (14) adapted for connection to a source of pressurized feed water, ii) a permeate line (16) adapted for connection to a dispenser of treated water and iii) a concentrate line (18) adapted for connection with a drain; wherein the assembly includes a pressurizable reservoir (22) containing weak acid cation exchange resin (25) and further includes at least one valve for selectively diverting flow of pressurized feed water along the feed line (14), through the reservoir (22) and returning to the feed line (14) prior to passing through the hyperfiltration membrane module (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.