Ephyra® – digesting thermal hydrolysed sludge: PRESENTATION ONLY

Koornneef, E. and Visser, A., Royal Haskoning DHV


  • Reducing SRT in a single stage digesters means wash-out of more undigested sludge
  • Therefore loss of VS reduction
  • Mesophilic digestion on THP sludge is quite common with short retention times (< 15 days)
  • But increased application of THP as pre-treatment prior to digestion processes in UK and elsewhere
  • THP sludge has normally high DS content and short retention times
  • Risk of overloading
  • Losing degradable material (short circuiting)
  • Unwanted digesting / methane forming in digested sludge buffers

Please fill in your details to download the proceedings

For more information about how Aqua Enviro
can help you, contact us...

8 Appleton Court, Calder Park, Wakefield, WF2 7AR, UK

Consultancy and Laboratory services: + 44 (0)1924 242255

Conferences and Training enquiries: +44 (0)1924 257891


  • By submitting this form, you agree that we may use the data you provide to contact you with information related to your request/submission and other relevant Aqua Enviro services. You can unsubscribe from Aqua Enviro marketing emails at any time by clicking the unsubscribe link in the email. To learn more, see our Privacy Policy