Method for treating wastewater containing active sludge
US7517454B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2007 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Jul 19, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method includes: disposing a filter into a body of wastewater containing active sludge, the filter including a supporting member having an outlet, and a filter media enclosing the supporting member and supported by the supporting member so as to have a predetermined firm shape, the filter media including a non-woven substrate and a fibrous filtering layer attached to the non-woven substrate and having a pore diameter ranging from 0.001 to 15 μm and a layer thickness ranging from 10 to 200 μm, the fibrous filtering layer being made from fibers having a fiber diameter ranging from 20 to 1000 nm; and driving the wastewater to pass through the filter using a pump connected to the outlet of the supporting member of the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.