Pulse aeration for immersed membranes
US9463419B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 2012 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | May 8, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/23128
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An assembly of immersed filtering membrane modules on the order of a cassette or larger are aerated in a series of air-on or high flow rate periods, each in the range of 0.5 to 20 seconds long, separated by longer air-off or low flow rate periods, each in the range of 5 to 40 seconds long. A manifold is in fluid communication with one or more aerators. The manifold and aerators are located in association with the modules. The assembly of immersed filtering membrane modules are provided with a burst of air from the plurality of aerators. The aerators may be fed with a continuous supply of air. The modules may be connected together in a cassette or rack. Bubbles from the aerators may be redirected or dissipated with a deflector before they contact the modules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.