As a 3.4 mgd plant built in the 1920s, the Aqua America Tiffin, Ohio, drinking water treatment plant faced the challenge of producing high-quality drinking water. With a full measure of seasonal variety combined with the runoff from a thriving agricultural environment, the small-town facility constantly encountered adverse conditions. In a short time period, influent turbidity could fluctuate from 10 to 2,000 ntu. This “flashy” water source and the area’s stringent regulations posed frequent operational difficulties.
When the Coldwater Board of Public Utilities in Coldwater, Mich., abruptly received new ammonia permit limits in August 2007, it hired consultants Fishbeck, Thompson, Carr & Huber, Inc. (FTC&H) to guide it to a solution. With a full measure of influent waste variety—residential, commercial, industrial and septage—and a new seasonal permit limit of 2 mg/L, Coldwater needed a budget-friendly solution to consistently perform through peak flows and industrial shock loading.
Located in Mechanicsburg, Pa., the 2.83-mile stretch of U.S. Route 11 (Carlisle Pike) from SR 581 (Harrisburg Expressway) to SR 114 has become a commercial and residential hub within a rural landscape. Both sides of the four-lane highway are lined with commercial centers, car dealerships and residential developments, making it a prime location for gas stations.