6. JRC report : Towards a better exploitation of the technical
potential of waste-to-energy
New BAT techniques for incineration announced
Revision of Waste Framework Directive
Better opportunities for obtaining end-of-waste status?
Revision of Landfill Directive
Sludge can no longer be landfilled after 2030
Overall: What to do with WWTP sludge?
Incineration / land spreading / fertilizer?
More changes?
7. - The wastewater treatment utility of Flanders
5.946 km
301 1.625
Water treatment
plants
Pumping stations
Piping
84%
of all domestic
waste water
treated
9. Integral water management
Custom rainwater management plan at the level of a specific municipality
- Inventory of piping network, ditches and waterways, hydrography, bottlenecks
- Consider separate vs. optimized combined sewer system
- Identify and designate specific plots for green roofs, infiltration, buffering, drainage, …
- Scenario analysis to test system reliability (rain events, river water levels)
- Municipality takes over management of private ditches
Avoid water nuisance (flooding, drought)
Increase water visibility in the landscape (recreational value)
R&D&I
10. R&D&I Integral water management
Custom rainwater management plan at the level of a specific municipality
- Inventory of piping network, ditches and waterways, hydrography, bottlenecks
- Consider separate vs. optimized combined sewer system
- Identify and designate specific plots for green roofs, infiltration, buffering, drainage, …
- Scenario analysis to test system reliability (rain events, river water levels)
- Municipality takes over management of private ditches
Avoid water nuisance (flooding, drought)
Increase water visibility in the landscape (recreational value)
11. Integral water management
Custom rainwater management plan at the level of a specific municipality
- Inventory of piping network, ditches and waterways, hydrography, bottlenecks
- Consider separate vs. optimized combined sewer system
- Identify and designate specific plots for green roofs, infiltration, buffering, drainage, …
- Scenario analysis to test system reliability (rain events, river water levels)
- Municipality takes over management of private ditches
Avoid water nuisance (flooding, drought)
Increase water visibility in the landscape (recreational value)
R&D&I
12. Integral water management
Custom rainwater management plan at the level of a specific municipality
- Inventory of piping network, ditches and waterways, hydrography, bottlenecks
- Consider separate vs. optimized combined sewer system
- Identify and designate specific plots for green roofs, infiltration, buffering, drainage, …
- Scenario analysis to test system reliability (rain events, river water levels)
- Municipality takes over management of private ditches
Avoid water nuisance (flooding, drought)
Increase water visibility in the landscape (recreational value)
R&D&I
13. Integral water management
Custom rainwater management plan at the level of a specific municipality
- Inventory of piping network, ditches and waterways, hydrography, bottlenecks
- Consider separate vs. optimized combined sewer system
- Identify and designate specific plots for green roofs, infiltration, buffering, drainage, …
- Scenario analysis to test system reliability (rain events, river water levels)
- Municipality takes over management of private ditches
Avoid water nuisance (flooding, drought)
Increase water visibility in the landscape (recreational value)
R&D&I
14. Integral water management
Custom rainwater management plan at the level of a specific municipality
- Inventory of piping network, ditches and waterways, hydrography, bottlenecks
- Consider separate vs. optimized combined sewer system
- Identify and designate specific plots for green roofs, infiltration, buffering, drainage, …
- Scenario analysis to test system reliability (rain events, river water levels)
- Municipality takes over management of private ditches
Avoid water nuisance (flooding, drought)
Increase water visibility in the landscape (recreational value)
R&D&I
15. R&D&I Decoupled local treatment in central areas
- Upgrading of rain water for non-potable reuse not always available!
- Upgrading of grey water for non-potable reuse
16. Resource recovery – dealing with scarcity in short and long
term
Effluent upgrading and reuse
- For groundwater recharge not necessary in winter, other priorities in summer?
- For irrigation / fertigation short-term problem solving ≠ long-term solutions!
- Should be part of a greater “water plan” (align ≠ water sources with ≠ uses, and prioritize
during drought)
R&D&I
17. Resource recovery – dealing with scarcity in short and long
term
Effluent upgrading and reuse
- For groundwater recharge not necessary in winter, other priorities in summer?
- For irrigation / fertigation short-term problem solving ≠ long-term solutions!
- Should be part of a greater “water plan” (align ≠ water sources with ≠ uses, and prioritize
during drought)
Phosphorus recovery
- Only a long-term problem, short-term incentives are few
- Find a way to monetize “sustainability”
R&D&I
22. Legal requirements for resource recovery
- P recovery in Germany
- Water reuse in Flanders
Quality requirements & responsibilities
- e.g. struvite may be “cleaner” than mined phosphate ore
- No clear quality requirements for non-potable reuse
- Quality at Point of delivery vs. Point of use
Social acceptance
LCA vs. Economics-based decision making
Financing
- E.g., who pays the expensive upgrading/distribution?
Clearing out the “grey zones”