Provide PDF Format
AWWA ACE58296
- Understanding the Fundamentals of Air Binding in Filters
- Conference Proceeding by American Water Works Association, 06/15/2003
- Publisher: AWWA
$12.00$24.00
Air bubbles that form in water treatment filters create headloss and can form wheneverthe total dissolved gas pressure exceeds the ambient hydrostatic solution pressure. Thelocation of potential bubble formation in filters can be predicted based on the clean bedheadloss with depth, flow rate, and influent total dissolved gas concentration. Bubbleformation within filters can be reduced if the ambient pressure within the filter wasincreased by greater submergence (water head above the media), lower hydraulic flowrate, or by use of a more porous media, these predictions were confirmed in bench-scaletesting. Bubbles trapped in the bed can be released by "burping", which can reduce theextent of headloss buildup. Burping is more significant at lower flow rates and with alower density, higher porosity and hydrophobic anthracite layer. Includes 12 references, tables, figures.
Related Products
AWWA WQTC57092
UV Disinfection at a Finished Water Reservoir; The "In's and Out's" of Albany's New UV Fac..
$12.00 $24.00
