Scum control system for peripheral feed channel of sedimentation tank
US4038185A · kind A · utility
16Cited by
8References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1976 |
| Grant date | Jul 26, 1977 |
| Priority date | — |
| Expiry date | Sep 8, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D21/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A peripheral feed sewage treatment final clarifier having a channel with lower distribution ports is provided with a vertically adjustable riser which is placed in the port where the scum tends to collect in the channel. The riser is set vertically so that diurnal variations in the elevation of the flow in the channel raises and lowers the collected scum past the upper lip of the riser at which times the scum is removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.