Unitary three stage wastewater treatment system
US7341660B1 · kind B1 · utility
8Cited by
45References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2004 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Nov 13, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2209/42
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention is a three stage wastewater treatment system having a first tank, a second tank and a third tank, all in fluid communication and forming a unitary structure. The first and second tanks are nested, where the first tank is the innermost tank. The first tank has a clarifier structure disposed therein separating the interior of the first tank into a quiescent zone and an aeration zone. Positioned in the aeration zone is at least one air injector positioned. The treatment system is covered, and is generally buried (but can be used above ground).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.