Multiple rate filter underdrain lateral gas metering plate
US10913014B2 · kind B2 · utility
2Cited by
18References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2016 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Aug 28, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D24/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filtration system has at least one underdrain lateral, a flume, and at least one metering plate. The metering plate includes a plate member with at least one opening configured to receive liquid or gas therethrough at a first flow rate during a backwash function and is configured to receive liquid or gas therethrough at a second, lower flow rate during filtration. A method of metering gas into a filtration system with a metering plate is also disclosed. The metering plate allows gas to flow into each underdrain lateral at two very different flow rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.