Centrifugal flow distribution clarifier feedwell and method of feeding influent to a clarifier thereby
US7794609B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2006 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Dec 31, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D21/2411
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Apparatus and methods are provided for controlling influent feed to produce a substantially uniform flow to a clarifier tank (2) to thereby enhance the settling efficiency within the clarifier. The apparatus comprises a feedwell (24) having a roof (26) and continuous sidewall (28) that together define a feedwell main body enclosure. Influent is fed via a relatively inboard tangential feed mechanism (108) to the inside of the roof (26) from an entry point proximate the center of the roof (150). Influent energy is properly distributed via the action of centrifugal force to generate a uniform axial flow within the feedwell main body which, in turn, is fed into the clarifier tank. Optional baffle members (152, 158) may be provided in the housing to slow angular momentum of the influent which, due to its original feed location, would necessarily be at a relatively low level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.