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Biologically Active Filters: An Advanced Treatment Process For Pharmaceuticals And Personal Care Products, Shuangyi Zhang
Biologically Active Filters: An Advanced Treatment Process For Pharmaceuticals And Personal Care Products, Shuangyi Zhang
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With the increasing concern of pharmaceuticals and personal care products (PPCPs) in source water, this study examines the hypothesis that existing filters and adsorbents in water treatment plants can be converted to biologically active filters (BAFs) to treat these compounds. Removals through bench-scale BAFs are evaluated as a function of media, granular activated carbon (GAC) and dual-media, empty bed contact time (EBCT), and pre-ozonation. For GAC BAFs, greater oxygen consumption, increased pH drop, and greater DOC removal normalized to adenosine triphosphate (ATP) are observed indicating a different microbial community compared to dual-media BAFs. ATP concentrations in the upper portion of …