Self-cleaning influent feed system for a wastewater treatment plant
US8225942B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 12, 2010 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Mar 24, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2001/007
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An influent feed system for directing the influent liquid via hydraulic energy to scour the surface of primary treatment tank walls and base to move the scoured solids to a sludge trough. Scouring action takes place during periods of low liquid levels in the tank. The system comprises two identical, adjacent tanks sharing a common distribution box. Either or both of the tanks are in use at any given time. The tank in use will be empty occasionally each day. Influent feed troughs disposed transversely in each tank directs solids towards a sludge hopper in the tank bottom. The IFTs extend over the width of the tank to provide scouring of the entire end wall and floor surface. Each IFT has a sump with a valved discharge piped directly to the sludge trough, and the floor of each IFT is sloped towards the sump to facilitates draining of solids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.