Contractual guarantees in a litigious market

Dr Nigel Horan, University of Leeds and Aqua Enviro: PRESENTATION ONLY


•Disputes which involve dewatering equipment at some point in the chain are on the increase through mitigation, mediation and litigation.
•Clients and suppliers believe they are protected through the contract, often optimistically
•Contractors are stuck in the middle
•Nobody gains in a dispute!


•Sludge treatment has changed hugely over the past decade
•Increasing use of thermal hydrolysis pre-treatment followed by MAD
•Requires high dry solids feed (10%)
•Expectations of 30% + dry solids after MAD
•Polymer doses higher than expected to achieve this


•Provide equipment based on contractor specifications
•Occasionally (rarely?) samples may be available for testing prior to specification
•Typically provide guarantees for solids concentration of final product as well as polymer dosage
•Protects itself by specifying the nature of the feedstock (eg: solids concentration and flow rate)
•But feed quality?

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