Problem: The Clapper Road Water Treatment Plant in Bethlehem, New York, included chlorine injection into the raw water to oxidize dissolved iron and manganese. While the plant was designed to treat 6 mgd, the chlorination process was limited to 3 mgd. In 2013, after the U.S. EPA began requiring stricter monitoring of trihalomethanes, the plant was in violation and community leaders quickly commissioned a plant improvement.
Solution: A new pretreatment facility was installed to inject concentrated oxygen to oxidize the dissolved iron and help oxidize of dissolved manganese. The process uses an in-line gas contacting system (Mazzei Injector Company) consisting of
