New jet-aeration system using 'Supercavitation'

摘要

Background, aim and scope A newly developed fine bubble aeration system, by which air is transferred under supercavitation conditions, shows a clearly better perfor-mance than traditional, well-known aerators that rely on the jet-pump principle and its performance can be compared to oxygen transfer rates achieved in membrane and foil plate aerators. Materials and method A prototype supercavitation aerator installed at a sewage treatment plant revealed an air input rate, which was about one third lower than that of the jet-pump system, which it replaced.