Proceedings

Actual Works Performance – Robust Design for WFD Consent Changes

Wickens, D., Severn Trent Water Ltd, UK

(free)

Implementation of the Water Framework Directive seems likely to require extensive moves to 3 mg/l
95%-ile ammonia Consents and 2 mg/l average total-P Consents, usually at the same works. At works
using chemical P-removal, metals consents from 1 to 4 mg/l (upper tier) will correspondingly result.
Data from supported growth systems is presented to show that Rotating Biological Contactors (RBCs) can
comfortably achieve these ammonia levels. In conjunction with reed beds the low levels of solids required
to comply with metals consents are also achievable, but less reliably.

Data from works with P-Consents introduced under the Habitats Directive and the CROW Act is presented
to show that the impact on nitrification is poorly predictable, and that ammonia performance can
improve or degrade, even at nominally similar works.

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

Email: enquiries@aquaenviro.co.uk

  • 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