1. 1 CSI024 - addressing resource efficiency with respect to wastewater treatment Bo N. Jacobsen EEA Freshwater Eionet Workshop 27-28 Sept. 2010 at EEA

2. 2 CSI024 – Urban Wastewater treatment - ww infrastructure service in 5 European regions

3. 3 CSI024 key policy question: How effective are existing policies in reducing loading discharges of nutrients and organic matter? Some problems Discharges (emissions) not directly addressed Once in tertiary no further improvement acknowledged Potential developments towards resource efficiency behaviour of pollutant sources in sewerage catchment Normalised pollutant discharges (emission) Water – energy nexus (carbon footprinting)

4. 4 How to derive indicators ? Agree on a story and the important (policy) questions Conclusion and communication of key messages -Identify relevant indicators (headlines) answering these -Compare with currently available indicator assessments Decide on assessment methods (targets, criteria) and data needed / available Data compilation and Assessment

5. 5 New (policy) questions towards resource efficiency indicators How big is the Urban Metabolism component for pollutants into wastewater + How big are the normalised pollutant discharges after treatment What is the resulting power consumption / carbon footprint from the wastewater treatment in my city / town ?

6. 6 Resource efficiency / Urban metabolism – combined sewerage catchment and WWTP performance indicator Starting point: incoming UWWTP load (t/y) Subtract big industry component e.g. E-PRTR transfers (optional) Normalise by: Population connected (inhabitants) Actual p.e. load for same year Actual hydraulic load for same year

7. 7 Resource efficiency – green infrastructure – sewerage catchment + WWTP performance indicator Starting point: discharge from UWWTP (t/y) Subtract big industry component e.g. by apportionment of E-PRTR transfers (optional) Normalise by: Population connected (inhabitants) Actual p.e. load for same year Actual hydraulic load for same year

8. 8 Resource efficiency – green infrastructure – power consumption – carbon footprint Starting point: net WWTP power consumption (total – recovery)(MWh/y) Reduce by big industry component e.g. by apportionment of E-PRTR BOD (or TOC) transfers (optional) Normalise by: Population connected (inhabitants) Actual p.e. load for same year Actual hydraulic load for same year

9. 9 Examples for illustration Provided in a pilot initiative with a few water utilities in cooperation with utility associations Based on a simple Excel template Trial of shapefile GIS overlay for estimating population in UWWTP service area

10. 10 Catchment Performance Indicators - loads exclude E-PRTR proportion and CSO in catchment Influent loadsIDQCODcrBOD5Total NTotal PInhabitants UWWTP short name l/p/dg/p/d1000 p LynettenDK1010537916596152.6535 DamhusåenDK31010642313568122.2230 Spv.Cent. AvedøreDK167000138916468132.4235 HagenDETP_NW120650511649131.7190 Bochum-OlbachtalDETP_NW120127413452131.7184 MendenDETP_NW124765411646121.773 Iserlohn-BaarbachtalDETP_NW123747410746141.769 Amsterdam WestNL1101418810641111.5573 WestpoortNL31005107783471.2291 InnsbruckATTP_7-71030130719799152.3154 Viikinmäki (Helsinki)FI36319083152.3780 For illustration – not conclusive !

11. 11 Catchment +UWWTP Indicators - loads exclude E-PRTR proportion and CSO from WWTP *) including CSO from WWTP effluent loadsIDQCODcrBOD5Total NTotal PInhabitants UWWTP short name l/p/dg/p/d1000 p Lynetten / *)DK10105 7.6 / 150.3 / 3.51.7 / 2.20.23 / 0.33535 Damhusåen / *)DK310106 12 / 201.2 / 4.52.1 / 2.80.26 / 0.39230 Spv.Cent. Avedøre / *)DK1670001 11 / 131.1 / 1.72.2 / 2.40.26 / 0.29235 HagenDETP_NW1206 8.31.84.50.19190 Bochum-OlbachtalDETP_NW1201 812.90.12184 MendenDETP_NW1247 13.12.74.90.3873 Iserlohn-BaarbachtalDETP_NW1237 11.21.34.30.2469 Amsterdam WestNL11014 6.40.51.60.16573 WestpoortNL31005 4.20.40.60.07291 InnsbruckATTP_7-710301 6.81.22.80.16154 Viikimäki (Helsinki) / *)FI 15.5 / 16.22.5 / 2.81.8 / 1.80.07 / 0.14780 For illustration – not conclusive !

12. 12 Water & Energy specific power consumption at UWWTPs -excluding proportion from E-PRTR -Net power consumption does not take heat recovery into account *) including sludge incineration IDPower consumptionGHG emission UWWTP short name W/pkg CO2-e/p/y totalnetnet, fossile Lynetten *)DK101056.1 DamhusåenDK3101064.72.5 Spv.Cent. Avedøre *)DK16700017.64.323 HagenDETP_NW12064.00.030.2 Bochum-OllbachrtalDETP_NW12014.21.05.4 MendenDETP_NW12474.22.010.3 Iserlohn-BaarbechtalDETP_NW12374.52.312.4 Amsterdam WestNL110142.70.60.2 WestpoortNL310051.5- 0.10 InnsbruckATTP_7-71013015.22.4 Viikimäki (Helsinki)FI10.72.80.2 For illustration – not conclusive !

13. 13 Pop-up information on individual WWTPs - now UWWTP-link

14. 14 Potential in future for performance indicators - specific loads excluding E-PRTR transfers; based on 2007 data; *) including WWTP storm overflows Damhusåen DK310106 Inf. (g/d/p): 68 (BOD), 12 (N), 2.2 (P) Eff. (g(d/p): 4.5 (BOD), 2.8 (N), 0.4 (P) Power (W/p): 4.7 (total) 2.5 (net) Lynetten DK10105 Inf. (g/d/p): 96 (BOD), 15 (N), 2.6 (P) Eff. (g(d/p): 3.5 (BOD), 2.2 (N), 0.3 (P) *) Power (W/p): 6.1 (total) 6.1 (net) Spildevandscenter Avedøre DK1670001 Inf. (g/d/p): 68 (BOD), 13 (N), 2.4 (P) Eff. (g(d/p): 1.7 (BOD), 2.4 (N), 0.3 (P) Power (W/p): 7.6 (total) 4.3 (net) Carbon footprint (kg CO2-e/y/p): 23 (net) (Source: utility websites)

15. 15 Strategic opportunities for future challenges: WISE is a transparent information system of high relevance for water utilities – be free to use it ! Several datasets based on EU water directive reporting can get added value by voluntary supplementary strategic data flows Hereby proposed to utilities to share data on: Specific loads from sewerage catchments Specific emissions from UWWTPs Specific energy consumption Potentially leading to performance indicators across Europe and beyond.. Amsterdam – entire Waternet service area

16. 16 GIS overlay:(Avedoere WWTP, Copenhagen) - detailed sewerage catchments + pop. density Population calculated for blue polygons: - app. 175,000 - reported: app. 235,000 Proposal: better with less detailed polygon framing total service area

17. 17 Preliminary Primary Secondary Tertiary More advanced WWPT Sewerage network Receiving water Separate storm water runoff Local receiving water CSO WW or combined Focus on urban wastewater emissions

18. 18 Some technical issues - to be discused with water utility associations Framing pollutant loads: Discharges of storm related, partially treated ww from WWTP Catchment CSOs and separate stormwater runoff Subtraction of big industries: E-PRTR transfers WWTPs own inventories Normalising parameter (population, p.e., m3,..) Framing water – energy nexus: Including sludge incineration Heat recovery in energy balance

19. 19 Options for data flows in WISE Via national reporters to UWWTDs Via EIONET national focal points Via national associations Coordinated by EUREAU, WSSTP, IWA,.. By individual uploads (EoE-approach) to be discussed...

20. 20 Thank you to: Avedoere Wastewater Services Lynettefaellesskabet Ruhrverband Amsterdam Waternet Innsbruck water utility Helsinki water utility for sharing data

21. 21 Thank you for your attention Do you agree to resource efficiency developments for CSI024...? How to proceed...? bo.jacobsen@eea.europa.eu