Experience and work in progress Meeting on PS Inventory Guidance Copenhagen, September th Water Emission Inventory in Flanders -Belgium

2010LIFE presentation2 Contents EIW MS excel/VBA model Application of GIS techniques : Case study for the Sector ‘Buildings’ Generic framework WEISS Water Emission Inventory in Flanders -Belgium

EIW MS excel/VBA model Functional scheme

Generic calculation for all sources Point and diffuse sources Stakeholder classification Calculation of the Gross Emission Value (GEV) Emission Factor (EF) X Emission Explanatory Variable (EEV) Accounting of the emissions in the different nodes of the material Flow Diagram EIW MS excel/VBA model

Sources

stofgroe p BZVxxxx CZVxxxx Nxxxx Pxxxx Metalenxxxx PAK16xxx EIW MS excel/VBA model Pollutants

INVENTARISEREN : lijst van bronnen (EF, EVV) BEREKENEN TRANSPORTEREN EIW MS excel/VBA model flow scheme

Case Study : Emissions of heavy metals generated by the corrosion of building materials 2010LIFE presentation8 Application of GIS techniques

Zn Gross emission map Net emission map

1A. Spatial distribution of the building stock 1B. Generating gross emission maps 2. Transporting the emissions from source to sink 3. Accounting of the loads 2010LIFE presentation10 Application of GIS techniques

Step 1A: Spatial distribution of building stock Dasymetric mapping algorithm Census entities map Land use map Distribution of buildings (1 map per type)

2010LIFE presentation12 Distribution of buildings (1 map per type) Gross emissions (1 map per metal: Cu, Zn, Pb) GEV (Gross Emission Values) Step 1A Step 1B: Generating gross emission maps

Overflow in Zone A Metals per ‘No Sewerage’ Removal in UWWTP Accounting per flow in the Material Flow Scheme Metals per Zone B Metals per Zone C Metals per Zone A Net emissions (1 map per metal: Cu, Zn, Pb) Sewage Infrastructure map Water Treatment Areas map Gross emissions (1 map per metal: Cu, Zn, Pb) Step 2: Transporting emissions from source to sink 2010LIFE presentation13

Source Paved and unpaved surfaces Water network and groundwater Overflow Treated discharge Rainwater sewage Sewer system Not linked to Urban WWTP Urban WWTP Untreated discharge Private drain Rainwater sewage Not linked to Individual WWTP Individual WWTP removal air soil groundwater Surface waters soil groundwater Possible pathways

Overflow in Zone A Metals per ‘No Sewerage’ Removal in UWWTP Accounting per flow in the Material Flow Scheme Metals per Zone B Metals per Zone C Metals per Zone A Net emissions (1 map per metal: Cu, Zn, Pb) Sewage Infrastructure map Water Treatment Areas map Gross emissions (1 map per metal: Cu, Zn, Pb) Step 2: Transporting emissions from source to sink

Hydrological entities Administrative entities Net emissions (1 map per metal: Cu, Zn, Pb) Municipality map Catchments of Flanders Any area Step 3: Accounting of the loads

EIW-model calculates emissions from source to sink  Monitoring and reporting  Scenario, planning and policy assessment GIS introduction for a case study  Emissions of heavy metals caused by corrosion in the building stock The strengths of both methodologies are combined in WEISS  The explicit geographical approach  The generic character of the framework and methodology allowing further development to incorporate all sources, pathways and pollutants Conclusions