AWWA ACE59916

Endocrine-disrupting compounds, pharmaceuticals and personal care products (EDC/PPCPs)have been linked to a variety of adverse effects on wildlife. Some public and regulatory agenciesview EDC/PPCP compounds in drinking water as a potential human health risk. Pesticides andherbicides can be EDCs and have been detected in surface and finished drinking waters since the1970s. However, over the past decade as analytical techniques to detect parts-per-trillion levels oforganic compounds, many industrial-produced chemicals have been detected in finishedwastewater, industrial runoff, rivers, drinking water sources, and even finished drinking water.This paper is based upon results from bench-scale testing on an AwwaRF project#2758. Researchers, consultants, and utilities will be interested in this paper as itaddresses actual removal of emerging contaminants (in this study 67 target compounds) spanninga wide range of chemical structures, and will aid in design of future bench and pilot-scale testsfor evaluating EDC/PPCPs. Bench-scale experiments have been conducted in model waters with natural organic matter andfour natural waters from around the United States. The waters were spiked with a suite of EDC/PPCPcompounds (initial concentration of 50 to 500 ng/L). Each water spiked with the EDC/PPCPcompound mixture was subjected to several parallel bench-scale treatments that include: alum and ferriccoagulation at multiple pH levels; chemical softening (pH 9, >11); chlorination (SDSconditions); ozonation (Giardia inactivation levels, plus hydrogen peroxide addition);activated carbon adsorption (2 PACs with four hour contact times at various dosages); deadendmembrane filtration (negatively charged/hydrophobic UF and NF membrane); and, biologicalbatch and column tests. Additional UV-photolysis tests and limited biodegradation experimentsare planned. LC-MS/MS & GC-MS/MS methods were used to analyze the suite of compounds.Supplemental experiments using tritium (³H) labeled estradiol were conducted with PACand membrane tests. Pilot- and full-scale testing will be conducted during subsequent phases ofthe project. Includes 2 references, table, figures.

Product Details

Edition:

Vol. - No.

Published:

06/17/2004

Number of Pages:

6

File Size:

1 file , 300 KB