To clean the pipe 8 feet overhead, Tom Buchwald bolted the hose reel and controls from a Vac-Con X-Cavator to the front of a 753 Bobcat loader. The 2-inch water supply hose is attached to the left, while the 2-inch jetting hose snakes forward and upward. (Courtesy of Quality Pipe Cleaning Co.)
A 24-inch gravity line designed to transfer sludge from one pit to another at the Blue Plains Advanced Wastewater Treatment Plant in Washington, D.C., was one-half to three-quarters full and hadn’t been used in years. As part of a plant upgrade, project engineer Nicholas Ritenour,...
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