High‐Rate Sedimentation in Water Treatment Works

depth. If the basin were 2 in. deep, this particle would fall to the bottom in only 2 min. In 1904, Hazen 1 presented his argument that settling basin efficiency is dependent primarily upon basin depth and overflow rate, and is independent of detention time. He proposed basin depths of as little as 1 in. Over 20 years ago, Camp 2 proposed settling basin depths of 6 in. and total settling basin detention times of 10 min.