The Cambi Thermal Hydrolysis Process (THP) – dramatically improving sludge digestion and dewatering

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Courtesy of Cambi AS

CAMBI MILESTONES
  • 1990 - First development work following research work of Li and Noike
  • 1995 – HIAS Norway – first full scale plant – still working very well after 11 years
  • 1998 - 2002 rapid increase in projects, Denmark, England, Norway, Scotland, Japan, Ireland – new challenges and risks to be overcome
  • 2000 - 2005 some problem solving
    • Chertsey, UK – fragmented engineering, new risks and operational issues esp.
      odour
      • Re-engineered 2005 and operations contact between Thames Water and Cambi
      • Proven odour control system using digester feed
  • Borregaard, Norway – continuous system pumping problems
      • Proven pump selection – now used in modular mobile system
  • Dublin (Ireland)/Aberdeen(Scotland) – hot pump stator problems, steam issues
      • Proven stator material selected
      • Improvements to control logic and some equipment (mainly valves)
      • Improvement in operations and maintenance
      • Digester recirculation system

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