Method and apparatus for increasing dewatering efficiency
US10730778B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Nov 22, 2017 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Aug 4, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/74
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus for increasing dewatering efficiency of a solids-laden liquid stream in a wastewater treatment facility, whereby a liquids-solids stream is pumped into a mixing apparatus in a closed-channel liquid flow conduit configuration, where the liquids-solids stream is intensely mixed with air and polymer in a mixing zone created by an adjustable flow restriction device, performing similar to a venturi to increase the velocity, agitation, and turbulence of the liquids-solids stream internal to the mixer, where the introduction of air and polymer to the stream is introduced independent of mixing energy. Compared with current methods and apparatuses to mix polymer with solids-laden wastewater, the present method and apparatus requires less energy, where it enables the addition of air independent of mixing energy, and it creates a zone of mixing with greater mixing efficiency via increased turbulence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.