Henry van Veldhuizen Amersfoort, 2014 Vallei en Veluwe Waterschap Vallei en Veluwe 244. 833 ha 1.082.000 inhabitants 16 wwtp’s 1.471.00 p.e. WWTP Amersfoort (300.000 p.e.) Presentation • History – Vision Energy and Resources – Energy Measures WWTP Amersfoort – Research Omzet.Amersfoort – Project Omzet.Amersfoort • 2013: Procurement Omzet.Amersfoort phase 1 en 2 • Future: Phase 3 Sludge drying Vision Energy and Resources (international) coöperation innovation! Knowledge exchange energy Waste water Ambition (2010) Clean water Sludge sand nutrients Paper fibers/ cellulose Fuel Raw Materials Measures wwtp Amersfoort • 2010 • 2012 • 2011 • 2012 10.000.000 Introduction sand filter kWh/y 8.000.000 6.000.000 Introduction bubble aeration 4.000.000 Biogas filtration with activated carbon 2.000.000 DEMON 2005 2006 2007 2008 2009 2010 2011 totaal verbruik elektriciteit elektriciteit voor beluchting elektriciteit door gasmotor inkoop van elektriciteit 2012 Research Omzet.Amersfoort (2010) Results: 2 Central Digestion 8 3 Sudge sale PE dosing 1 Omzet. 7 4 Amersfoort CHP study 6 P-recovery Sludge pretreatment • Central digestion + Thermal Pressure Hydrolysis • No PE dosing (effluent quality) • Bio-P en P-recovery • Sludge drying: 75% feasible, but many risc’s • CHP, no ORC 5 Sludge drying Project Omzet.Amersfoort (2010) • Proposal: Three Phases: 1. Central digestion + Thermal Hydrolysis 2. Bio-P en P-recovery 3. Sludge drying with excess heat • LIFE+ subsidy: • Realisation innovative aspects (TPH, P, sludge drying) • Monitoring results • Knowledge sharing Project Omzet.Amersfoort • Expected results: – Phase 1: Energy: • Amersfoort Energy Neutral • Region 65% self sufficient • Heat: dependent on process • Sludge: 30% d.w. • ROI: 6 years – Phase 2: Phosphate: • 40% recovery of total phosphate region • Chemical usage: Reduction 50% – Phase 3: Sludge drying • Sludge: 90% d.w. for 75% of the sludge • ROI 7 years 2013: Procurement • Procurement of Phase 1 and 2 at once • Selection: SH+E • TPH: Stulz – Lysotherm : • P recovery with Wasstrip and Pearl Result Procurement – Phase 1 and 2: Energy en Phosphate: • Amersfoort Energy neutral • Surplus: 2 M kWh/jaar • Region 65% self sufficient • Heat: dependent on process • 40% recovery of total phosphate region • Chemical usage: Reduction 50% • Sludge: 30% d.w. • ROI: 6 years 130% 70% maximum 42% 31% 6,7 jaar Process according to procurement Amersfoort PST AT SST DEMON CHP pearl Thick. Thick. strip Thickener DT Buffer Dew. Woudenberg TPH sec. sludge Nijkerk prim. sludge CHP Digestion Tank (DT) sec. sludge Soest CHP prim. sludge DT sec. sludge Silo Final treatment The movie ... Future: Phase 3 – sludge drying • • • • • Sludge drying with excess heat Project not possible on WWTP Amersfoort with project period Choice: pilot/demo with 10% on wwtp Ede: 200 kWth Period: 2014-2016 Interpretation of results for WWTP Amersfoort in 2015 Everything clear… more information: www.omzetpuntamersfoort.nl/english