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CSI024CSI024- addressing resource efficiency with respect to - addressing resource efficiency with respect to

wastewater treatmentwastewater treatment

Bo N. JacobsenEEA

Freshwater Eionet Workshop 27-28 Sept. 2010 at EEA

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

0

10

20

30

40

50

60

70

80

90

100

% o

f nati

onal

pop

ulati

on c

onne

cted

to

UW

WTP

s

N-1

990

(4)

N-1

995

(4)

N-2

000

(4)

N-2

002

(4)

N-2

005-

2006

(3)

C-19

90 (8

)C-

1995

(8)

C-19

98 (8

)C-

2002

-4 (7

)C-

2005

-200

6(7)

S-19

94-5

(3)

S-19

97-2

000

(4)

S-20

03-4

(3)

S-20

05-2

007(

5)

E-19

95 (3

)E-

2001

(3)

E-20

02 (4

)E-

2007

(6)

SE-1

995

(2)

SE-1

998

(2)

SE-2

003-

4 (3

)SE

-200

6-20

07(3

)

Tertiary

Secondary

Primary

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CSI024 key policy question:CSI024 key policy question: “How effective are existing policies in reducing “How effective are existing policies in reducing loading discharges of nutrients and organic matter?”loading discharges of nutrients and organic matter?”

Some problems• Discharges (emissions) not directly addressed• Once in ”tertiary” no further improvement

acknowledgedPotential developments towards resource

efficiency• ”behaviour” of pollutant sources in sewerage

catchment• Normalised pollutant discharges (emission)• Water – energy nexus (carbon footprinting)

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How to derive indicators ?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

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New (policy) questions towards New (policy) questions towards resource efficiency indicatorsresource 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 ?

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Resource efficiency / ”Urban metabolism” Resource efficiency / ”Urban metabolism” – combined sewerage catchment and WWTP – combined sewerage catchment and WWTP performance indicatorperformance 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

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Resource efficiency – green infrastructure” Resource efficiency – green infrastructure” – sewerage catchment + WWTP performance indicator– 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

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Resource efficiency – green infrastructure” Resource efficiency – green infrastructure” – power consumption – carbon footprint– 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

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Examples for illustration 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

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Catchment Performance IndicatorsCatchment Performance Indicators- loads exclude E-PRTR proportion and CSO in catchment

Influent loads ID Q CODcr BOD5 Total N Total P Inhabitants

UWWTP short name   l/p/d g/p/d 1000 p

Lynetten DK10105 379 165 96 15 2.6 535

Damhusåen DK310106 423 135 68 12 2.2 230

Spv.Cent. Avedøre DK1670001 389 164 68 13 2.4 235

Hagen DETP_NW1206 505 116 49 13 1.7 190

Bochum-Olbachtal DETP_NW1201 274 134 52 13 1.7 184

Menden DETP_NW1247 654 116 46 12 1.7 73

Iserlohn-Baarbachtal DETP_NW1237 474 107 46 14 1.7 69

Amsterdam West NL11014 188 106 41 11 1.5 573

Westpoort NL31005 107 78 34 7 1.2 291

Innsbruck ATTP_7-710301 307 197 99 15 2.3 154

Viikinmäki (Helsinki) FI 363 190 83 15 2.3 780

For illustration – not conclusive !

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Catchment +UWWTP IndicatorsCatchment +UWWTP Indicators

- loads exclude E-PRTR proportion and CSO from WWTP

*) including CSO from WWTP

effluent loads ID Q CODcr BOD5 Total N Total P Inhabitants

UWWTP short name   l/p/d g/p/d 1000 p

Lynetten / *) DK10105   7.6 / 15 0.3 / 3.5 1.7 / 2.2 0.23 / 0.33 535

Damhusåen / *) DK310106   12 / 20 1.2 / 4.5 2.1 / 2.8 0.26 / 0.39 230

Spv.Cent. Avedøre / *) DK1670001   11 / 13 1.1 / 1.7 2.2 / 2.4 0.26 / 0.29 235

Hagen DETP_NW1206   8.3 1.8 4.5 0.19 190

Bochum-Olbachtal DETP_NW1201   8 1 2.9 0.12 184

Menden DETP_NW1247   13.1 2.7 4.9 0.38 73

Iserlohn-Baarbachtal DETP_NW1237   11.2 1.3 4.3 0.24 69

Amsterdam West NL11014   6.4 0.5 1.6 0.16 573

Westpoort NL31005   4.2 0.4 0.6 0.07 291

Innsbruck ATTP_7-710301   6.8 1.2 2.8 0.16 154

Viikimäki (Helsinki) / *) FI   15.5 / 16.2 2.5 / 2.8 1.8 / 1.8 0.07 / 0.14 780

For illustration – not conclusive !

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Water & Energy specific power consumption at UWWTPsWater & Energy specific power consumption at UWWTPs - excluding proportion from E-PRTR- Net power consumption does not take heat recovery into account*) including sludge incineration

  ID Power consumption GHG emission

UWWTP short name   W/p kg CO2-e/p/y

    total net net, fossile

Lynetten *) DK10105 6.1 6.1  

Damhusåen DK310106 4.7 2.5  

Spv.Cent. Avedøre *) DK1670001 7.6 4.3 23

Hagen DETP_NW1206 4.0 0.03 0.2

Bochum-Ollbachrtal DETP_NW1201 4.2 1.0 5.4

Menden DETP_NW1247 4.2 2.0 10.3

Iserlohn-Baarbechtal DETP_NW1237 4.5 2.3 12.4

Amsterdam West NL11014 2.7 0.6 0.2

Westpoort NL31005 1.5 - 0.1 0

Innsbruck ATTP_7-7101301 5.2 2.4

Viikimäki (Helsinki) FI 10.7 2.8 0.2

For illustration – not conclusive !

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Pop-up information on individual WWTPsPop-up information on individual WWTPs- now- now

•

UWWTP-link

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Potential in future for performance indicatorsPotential in future for performance indicators- specific loads excluding E-PRTR transfers; based on 2007 data; - specific loads excluding E-PRTR transfers; based on 2007 data; *) including WWTP storm overflows*) including WWTP storm overflows

Damhusåen DK310106Inf. (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 DK10105Inf. (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)

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Strategic opportunities for future challenges: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 consumptionPotentially leading to performance indicators across Europe

and beyond ..

Amsterdam – entire Waternet service area

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GIS overlay:(Avedoere WWTP, Copenhagen)GIS overlay:(Avedoere WWTP, Copenhagen)- detailed sewerage catchments + pop. density- 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

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Preliminary Primary Secondary Tertiary More advanced

WWPTSewerage network Receiving water

Separate storm water runoff

Local receiving water

CSO

WW or combined

Focus on urban wastewater emissions

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Some technical issuesSome technical issues- to be discused with water utility associations- to be discused with water utility associations

• Framing pollutant loads:• Discharges of storm related, partially treated ww from

WWTP• Catchment CSO’s and separate stormwater runoff

• Subtraction of big industries:• E-PRTR transfers• WWTP’s own inventories

• Normalising parameter (population, p.e., m3,..)• Framing water – energy nexus:

• Including sludge incineration• Heat recovery in energy balance

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Options for data flows in WISEOptions 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...

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Thank you to:Thank you to:

Avedoere Wastewater ServicesAvedoere Wastewater ServicesLynettefaellesskabetLynettefaellesskabetRuhrverbandRuhrverbandAmsterdam WaternetAmsterdam WaternetInnsbruck water utilityInnsbruck water utilityHelsinki water utilityHelsinki water utility

for sharing datafor sharing data

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Thank you for your attentionThank you for your attention

Do you agree to ”resource efficiency” developments for CSI024 ...?

How to proceed ...?

bo.jacobsen@eea.europa.eu