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Separation characteristics in dissolved air flotation - pilot and full-scale demonstration

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Author

Summary, in English

This study presents practical implications for particle separation in Dissolved Air Flotation (DAF). The objectives were to localise where particles are separated from the water phase and to determine what particles, in terms of size, are removed by the DAF-process. Both pilot- and full-scale plants were investigated. Particle sizes were analysed with a light-blocking particle counter and an optical borescope was used for visualisation of particle-bubble aggregates. It was found that particles are preferably separated upstream in the process, i.e. close to the contact zone. Furthermore, separation efficiency for particles increased with increasing particle size.

Publishing year

2003

Language

English

Pages

89-96

Publication/Series

Water Science and Technology

Volume

48

Issue

3

Document type

Journal article

Publisher

IWA Publishing

Topic

  • Water Engineering

Keywords

  • rise velocity
  • dissolved air flotation
  • particle size analysis
  • separation

Status

Published

ISBN/ISSN/Other

  • ISSN: 0273-1223