Oxygen transfer to water in gravity flow pipes has been studied in a 2
4 m long, 0.225 m diameter sewer. Laboratory tests were conducted wher
e the slope and flow in the sewer could be varied independently. The c
lean water reaeration test was used to determine the oxygen transfer.
The K-L value for the oxygen transfer was found to be a function of en
ergy dissipation and mean hydraulic depth. The results are discussed i
n relation to oxygen transfer determinations in flumes and field studi
es of oxygen transfer in sewers.