Appendix F - Public Consultation Documentations - Utilities Kingston

Technical Memorandum 4:Liquid Train Technology• The following alternative technologies were considered for the upgradeand expansion of the Cataraqui Bay WWTP. The short listedtechnologies are highlighted in bold.• Conventional Activated Sludge (CAS) – Existing Process atCataraqui Bay WWTP• Activated Sludge with Ballasted Mixed Liquor• Integrated Fixed Film/ Activated Sludge (IFAS)• Membrane Bioreactor (MBR)• Moving Bed Biofilm Reactor (MBBR)• Biological Aerated Filter (BAF) – Existing Process atRavensview WWTP• Rotating Biological Contactor (RBC)• Sequencing Batch Reactor (SBR)• The short listed technologies are further developed into designconcepts:• Alternative 1 – Conventional Activated Sludge (CAS)• Alternative 2 – Integrated Fixed Film/Activated Sludge (IFAS)• Alternative 3 – Membrane Bioreactors (MBR)• Alternative 3(a) – Convert Existing CAS to MBR and Expandas Required• Alternative 3 (b) – Retain Existing CAS and ConstructAdditional MBR• Alternative 4 – Biological Aerated Filter (BAF)• Alternative 4(a) – Convert Existing CAS to BAF and Expandas Required• Alternative 4(b) – Retain Existing CAS and ConstructAdditional BAF