Nanoflotation

Abstract

A nanoflotation system used to separate suspended solids or large settling or floating solids from water, waste water or liquids. This is accomplished through the use of submerged membranes,ll,23, in combination with five design components; froth flotation, 4, gravity settling,9, pre coating of the submerged membranes,6, spacing, figure 4,of the membranes to facilitate flotation of solids to the surface or to the bottom of the containment chamber holding the submerged membranes, and membrane structures which use large diameter hollow fibre or tubular membranes and / or large pore opening membrane materials.

Description

technical field [0001] Water and wastewater treatment, solid and liquid recovery. Background technique [0002] The application of submerged membranes has made many achievements. A key issue is membrane fouling and membrane maintenance. Many inventions have used air to reduce membrane fouling. In addition, there are traditional methods of separating solids from liquids. This traditional method uses a clarifier with or without settling tubes or inclined settling plates, or an air flotation system in which high pressure dissolved air is used, or an induced air or froth flotation system to separate the solids and float the solids to the surface and then remove the solid sludge / skim layer with a skimmer or skim / float separation system. [0003] The present invention uses all of these components but focuses on the use of a pre-coating of nanoparticles on rough (large pore and large diameter) submerged membranes and on the use of froth flotation and membrane spacing to enhance...

AI Technical Summary

Problems solved by technology

[0007] The benefits of froth flotation with submerged membranes are discussed in journal papers by Lazaridis et al. (Aristotle University, Greece), June 2003 and June 2004, However, the effect of using rough membranes and membrane spacing and pre-coating in combination with froth flotation was not explored

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