AWWA WQTC59008

As a part of a project funded by the AWWA Research Foundation (AwwaRF) ozone assisted biological (OAB) filtration was evaluated for its effectiveness on biodegradation of MIB/G. Pilot testing of OAB was performed at the City of Chandler WTP for six months (October 2002-February 2003). This paper presents the pilot study findings of this research project. To address the research goal of biological degradation of MIB/G, an orthogonal experimental design was developed and tested. The primary objectives of the pilot was first to identify effective filter design for the taste and odor (T&O) (and particulate, total organic carbon (TOC), disinfection byproduct (DBP) precursor) removal: by anthracite to GAC media filters; and, at different filter loading rates (and EBCTs). In orthogonal matrix one variable was altered one at a time from the baseline condition (BL). The objectives of the orthogonal matrix of experiments are to address: optimal ozone dose; influent MIB/Geosmin concentrations; effect of pH; and, effect of pretreatment with and without ozone. Includes 7 references, table, figures.