Thursday, August 28th
8:30 a.m. - 9:05 a.m. | Hilton Burkhart AB
Converting to Biologically Active Filtration
At 125-mgd, the Hap Cremean Water Plant is the largest of three plants serving Columbus, Ohio. As part of a large ongoing plant upgrade to address the Disinfection Byproduct Rule, the Hap Cremean Water Plant is in the process of converting existing dual media rapid sand filters into biologically active filters.
The dual-cell, H style filters are being retrofitted with a new, unique underdrain system, air scour, and dual media (sand and GAC). The GAC will function as a substrate for the biology and not as an adsorptive process. Additional improvements to the filters include new backwash troughs and updated touch screen control consoles.
This presentation will focus on converting Hap Cremean’s conventional filtration to biologically active filtration. The operational advantages and challenges of biologically active filtration – such as improved removal of naturally occurring organic matter, color, and a number of other compounds, as well as taste and odor control – will be explored.