Raw water channel spacer and spiral wound membrane element including the same
US11484840B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2017 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Jun 21, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2313/146
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A raw water channel spacer capable of suppressing formation of a concentration polarization layer in a region in the vicinity of a separation membrane in a raw water channel, and a spiral wound membrane element including the same are provided. A raw water channel spacer is formed by superposing a first yarn row and a second yarn row, and includes alternately a first mesh structure having a configuration in which first rectangular meshes formed of the yarn rows are continuous in an extending direction of the second yarn row, and a second mesh structure having a configuration in which meshes are continuous in the extending direction of the second yarn row such that an interval in the second yarn row is smaller than an interval of the second yarn row forming the first mesh structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.