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Technique a general view of what type of remov- als were achieved with regard to the 10 selected compounds. Pilot Testing Conclusions Overall, the average removal of all 10 compounds was nearly 70% at 10 mg/L fresh PAC dose and more than than 80% at 20 mg/L fresh PAC dose. These results generate a few conclusions from the testing: • A CEHRS/PAC process is capable of removing TOrCs from a typical municipal WWTP stream • Generally, a higher fresh PAC dose resulted in higher removal Table 1: CEHRS/PAC operational conditions. (Image provided by Kruger Inc.) Table 2. CEHRS/PAC pilot TOrC average removals. (Image provided by Kruger Inc.) • PAC dose may be optimized at a full-scale plant to balance expected performance and operating costs based on the above • Some compounds were more easily removed than others, which indicates a compound's molecular make-up may drive its capacity to be removed from the waste stream The results of the piloting efforts that took place at the Milwaukee Metropolitan Sewerage District demonstrate that a CEHRS/PAC process provides municipal WWTPs with a viable option in removing TOrCs from their waste streams. This marks significant progress in the research to find eco- nomic ways to remove harmful compounds in public water/ wastewater streams. Future research can now use the results from this pilot as a resource to make further gains in the TOrC removal arena. The health of the public and the overall ecosystem is at stake as more and more pollutants like TOrCs make their way into the human water sup- ply. Knowing that resources to help eliminate the TOrC issue exist and will continue to grow, communities everywhere can now look to the future in a positive light. Pilot Testing Team: Many thanks go to the pilot program team that executed the pilot testing. It was the collaborative efforts of the following organizations that made the pilot testing a success: The Water Environment Research Foundation (WERF), The Milwaukee Metropolitan Sewerage District (MMSD), Veolia Water Milwaukee (VWM), Veolia Water Solutions & Technologies (VWS), University of Wisconsin- Milwaukee (UWM), and Corollo Engineers. Daniel M. Austria Jr. is an application engineer for the ACTIFLO Systems division of Kruger / A Veolia Water Solutions & Technologies Company. His experience has focused on process design, engineering, and operation of physical/ chemical separation technologies. Prior experience includes working in the environmental department of a pulp/paper manufacturer for two years, and also participating in water and wastewater treatment system design and operation for 12 years. He has a bachelor of Science In Chemical Engineering from The University of Dayton, OH. 30 Water Online The Magazine, Wastewater Edition ■ wateronline.com