Sedimentation

Abstract

AbstractHumans knew the technique of sedimentation since time immemorial. They had learned from Mother Nature that when river waters come to rest in ponds and lakes they become much clearer. Whenever they had to drink water from rivers carrying silt and other suspended particles, they let it rest a while before drinking. The technique of sedimentation was used in the construction of prehistoric water works. According to Babbit and Doland (1) the history of water works structures, which mainly consisted of a reservoir to store water and to remove suspended particles, and a system of carrying water from the reservoir to populated areas, are found in the excavations of prehistoric ruins. The remains of Lake Moeris, which was one of the largest reservoirs of the Nile Valley, indicate its construction dates back to about 2000 BC. The Romans are known to have had an elaborate system of aqueducts, reservoirs, public baths, and public fountains for their water supply. Public water supplies in the United States date back to 1652 in Boston and to about 1732 at Schaefferstown, PA (2).KeywordsActivate SludgeSettling VelocityOverflow RateSettling TankRectangular TankThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.