Robinson, D.1 and Sherwood, A.2, 1MWH, UK, 2United Utilities, UK PRESENTATION ONLY
(free)Integrated Catchment Model (ICM)
• Integrates pollutant sources with receiving water.
• Includes – WwTW Point Sources – CSO Discharges – Urban storm run-off – Background River Flow and Quality
• Driven by rainfall
Question – Can enhancements to the treatment at the WwTW reduce or eliminate the need for network storage?
Rochdale ICM Solutions
• PR09 work was based on actual WwTW quality performance. At that time this was 95%ile 6.4 BOD and 2.1 Ammonia
• EA Asked us to re-model based on the WwTW achieving it’s 95%ile consent of 5 mg/l Ammonia
• Using the consented value we cannot achieve FIS un-ionised ammonia compliance
Aqua Enviro Ltd
T: 0113 8730728
c/o Tidal Accounting, HQ Offices, Radley House, Richardshaw Road, Leeds, West Yorkshire, LS28 6LE