processes for reducing the biochemical oxygen demand of sewage

摘要

1320794 Mixing in conduits AIRCO Inc 22 June 1970 [2 July 1969] 30190/70 Heading B1C [Also in Division C1] Liquids passing through a pipe are mixed by fixing mixer units 128, 130 in the pipe. The units may be disposed in spaced pairs, one clockwise, and one anti-clockwise, as shown, or they may be arranged continuously throughout the length of the pipe. When used in a sewage plant, the units may be made from epoxy-fibreglass, polyester or stainless steel.