RE: Micro Bubbles

Ahmed wrote,
> I need to create tiny air bubbles for a flotation process.
> I am vaguely aware of three methods of generating these air bubbles.
> 1. High speed stirrer with air in-feed.
> 2. Centrifugal pump with air injected into casing
> 3. Air Sparger
>
> The method I prefer most at the moment is the air sparger, some type of
> sintered material that "extrudes" tiny bubbles that are swept
> away by cross
> flow of the liquid. Can fellow members share their experience in this area
> and point me to suppliers of this technology.

Check out the wastewater treatment industry. Wastewater treatment plants use porous bubble diffusers in aeration tanks for secondary treatment of wastewater.

Ken Edwards, Ph.D., P.E.
LMNO Engineering, Research, and Software, Ltd. The fluid flow calculations website - <a href="http://www.LMNOeng.com">http://www.LMNOeng.com</a> Hydrology, hydraulics, flow measurement, groundwater, and unit conversions. Received on Tue Oct 16 10:10:00 2001