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Henry van Veldhuizen
Amersfoort, 2014
Vallei enVeluwe
244. 833 ha
1.082.000 inhabitants
16 wwtp’s
1.471.00 p.e.
Waterschap Vallei en Veluwe
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
Ambition(2010)
(international) coöperation innovation! Knowledge exchange
Wastewater
sandnutrients
Paper fibers/ cellulose
Sludge
Fuel
energy
Clean water
Vision Energy and Resources
Raw Materials
Measures wwtp Amersfoort
• 2010
• 2012
• 2011
• 2012
-
2.000.000
4.000.000
6.000.000
8.000.000
10.000.000
2005 2006 2007 2008 2009 2010 2011 2012
kWh/y
totaal verbruik elektriciteit elektriciteit voor beluchting
elektriciteit door gasmotor inkoop van elektriciteit
Biogas filtration with activated carbon
Introduction bubble aeration
Introduction sand filter
DEMON
Research Omzet.Amersfoort (2010)
1 Omzet.
Amersfoort
2Central
Digestion
3PE dosing
4Sludge pre-treatment
5Sludge drying
6P-recovery
7 CHP study
8Sudge sale
Results:
• 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
Project Omzet.Amersfoort (2010)
• Proposal: Three Phases:1. Central digestion + Thermal
Hydrolysis2. Bio-P en P-recovery3. 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 130%• Surplus: 2 M kWh/jaar • Region 65% self sufficient 70%• Heat: dependent on process maximum• 40% recovery of total phosphate region 42%• Chemical usage: Reduction 50%• Sludge: 30% d.w. 31%• ROI: 6 years 6,7 jaar
BI 6%
Process according to procurement
GT
ATVBT NBT
Amersfoort
Woudenberg
GI
ontw
sec. slib
BI4,0%
wkk DEMON
strip
pearl
Nijkerk
sec. slib
Soest
prim. slib
sec. slib
prim. slib GT
TDH
Buffer
eindvwniet specifiek
Silo
wkk + div
extra wkk
GT
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