Water system chemical use aim of study
Tulsa hopes UA finds way to cut ammonia in filtering
Posted: October 9, 2013 at 2:27 a.m.
Updated: October 9, 2013 at 2:31 a.m.
University of Arkansas researchers are working to refine a commonly used drinking-water filtration process to reduce dependence on powerful chemicals.
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Northwest Arkansas, Pages 9 on 10/09/2013