Screening of inert solids from a low-yield wastewater treatment process
US7569147B2 · kind B2 · utility
25Cited by
149References
63Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 31, 2006 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Oct 20, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method for removing inert solids from low-yield wastewater treatment processes. The method includes combining wastewater with bacteria-laden sludge in a mainstream reactor to form a mixed liquor, separating the mixed liquor into a clear effluent and activated sludge, returning a first portion of activated sludge to the mainstream reactor, treating a second portion of activated sludge in a sidestream bioreactor prior to returning the second portion of activated sludge to the mainstream reactor, and employing a screening device within the wastewater treatment process to remove inert solids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.