Excess overflow orifice tubes
US4555340A · kind A · utility
21Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1983 |
| Grant date | Nov 26, 1985 |
| Priority date | — |
| Expiry date | Oct 26, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/921
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A final clarifier for a sewage treatment plant has a peripheral feed influent channel with lower distribution ports and is also provided with tubes to minimize the headloss in the clarifier. The minimum headloss tubes are set to allow the basin to operate at more than one limiting headloss set point. By increasing the available orifice area at a certain flow rate, a maximum or peak headloss limitation can be achieved without compromising the design (average) headloss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.