Developments In Enzymic Hydrolysis – New Ideas And Lessons Learnt

Bungay, S., and Abdelwahab, M., Monsal


Over the last ten years, a variety of pre-treatment technologies have emerged claiming to
optimise anaerobic digestion. Of all these technologies, biological hydrolysis (Monsal Enzymic
Hydrolysis) is the most widely adopted technology in the UK. Monsal Enzymic Hydrolysis has
now been selected for eleven plants; eight operational, one under construction, and two in
design, and the technology has been adopted by five water utility companies, and is currently the
technology utilised at the largest Advanced Digestion plant in the UK.

Originally designed as a cost effective alternative to secondary digestion, the paper reviews the
development of the Monsal Enzymic Hydrolysis process since 2002 to the present day. Current
levels of performance are highlighted demonstrating biogas production of >400m3
/tds, pathogen free centrifuge cake without regrowth, energy self-sufficiency, rheology conditioning,
dewaterability >28%DS and seamless plant integration. New plants under construction are
presented introducing new advances such as raw cake back mixing allowing feeds of 8% and
digester loadings of >4.5kgVS/m3 .day.

Advanced Digestion, Biological Hydrolysis, Energy Balance, Pathogen Reduction, Plant
Engineering, Steam Heating, Sludge Rheology, Digester Loading.

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