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BALWOIS 2010 – Ohrid, Republic of Macedonia – 25, 29 May 2010

WEISS, A Water Emissions Inventory planning Support System aimed at reducing the pollution of water bodies. BALWOIS 2010 – Ohrid, Republic of Macedonia – 25, 29 May 2010. Content. 1. Introduction 2. Conceptual framework and components of WEISS 3. Introducing GIS & model blocks in WEISS

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BALWOIS 2010 – Ohrid, Republic of Macedonia – 25, 29 May 2010

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  1. WEISS, A Water Emissions Inventory planning Support System aimed at reducing the pollution of water bodies BALWOIS 2010 – Ohrid, Republic of Macedonia – 25, 29 May 2010

  2. Content • 1. Introduction • 2. Conceptual framework and components of WEISS • 3. Introducing GIS & model blocks in WEISS • 4. Spatial analysis applied to the building stock • 5. Planning and policy applications • 6. Conclusions

  3. 1. Introduction EU-LIFE+ 08 ENV/B/000042 2010-2012

  4. 1. Introduction

  5. 1. Introduction SOURCE ZINC EMISSION (kg/year) UWWTP Population Industry Infrastructure Agriculture Nature Transport scale 1:1.000.000

  6. 1. Introduction • Relation with EU Directives • Water Framework Directive (WFD) • Urban Waste Water Treatment Directive (UWWTD) • European Pollutant Release and Transfer Register (E-PRTR) • Scope • Identify significant emission sources • Monitor compliance with reduction programmes • What’s new • Generic character for all water pollutants (nutrients as well as hazardous substances) and all sources (point and diffuse) • Explicit geographical analysis at high resolution • Relation between source and sink

  7. 2. Concepts Conceptual framework

  8. Material flow scheme of WEISS 2. Concepts air soil groundwater air Source Water network and groundwater Paved and unpaved surfaces Quantification of the source: bottom-up Gross Emission Value (GEV) = Emission Factor (EF) X Emission Explanatory Variable (EEV) soil groundwater Private drain Sewer system Overflow removal Rainwater sewage Not linked to Individual WWTP Individual WWTP Urban WWTP Not linked to Urban WWTP Rainwater sewage Treated discharge Untreated discharge Surface waters

  9. 3. GIS & model blocks Accounting for various Geographical entities Any other spatial entity Hydrologic entities Administrative entities Transport route from Source to Surface Water Discharge in the surface waters Run-off at the earth surface Treatment facilities Sewage treatment zones Sewage network Groundwater Along water networks Spatial distribution of the Source Point sources Line & network sources Surface sources Introducing GIS in WEISS • SPATIAL DISTRIBUTION SOURCE • Point source • Point source • Line source • Linear distribution • Proportional to link characteristics • Surface source • Proportional distribution • Dasymetric mapping • Spatial interpolation • Overlay analysis • Spatial modelling

  10. 3. GIS & model blocks SPATIAL ALLOCATION SOURCE PATHWAYS ACCOUNTING MODEL BLOCKS point source point source hydrologi- cal entities hydrologi- cal entities sewage system sewage system water networks direct discharge direct discharge line source administra- tive entities administra- tive entities runoff other spatial entities other pathways surface source ground- water EXAMPLE: SOURCE WASTEWATER HOUSEHOLDS EXAMPLE: SOURCE AGRICULTURAL USE OF PESTICIDES

  11. 4. Building stock Pb - 2005 Gross emission map Net emission map

  12. 5. Planning & policy Zinc 1998 – 2005: more gross emissions, less net emissions

  13. 6. Conclusions • WEISS calculates emissions from source to sink • Making an inventory of all water pollutant sources • Monitoring and reporting • Scenario, planning and policy assessment • Developped as a prototype • Emissions of heavy metals caused by corrosion in the building stock • The strengths of the system • The explicit geographical approach • The generic character of the framework and methodology • New sources • New pathways • New pollutants • New study areas • More information: http://weiss.vmm.be

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