Waste - recycling or energy? Anders Evald 24th Sept. 2015 Andedammen, Birkerød, Denmark

Presentation Engineer 57 Lived in Andedammen 24 years 25 years in the energy sector, specialized in heat and power procution from renewable fuels (wood, straw and waste) Currently in HOFOR, procurement of wood chips, sustainability and heat production Beer geek

Waste as an energy source Combustion technology is mature Flue gas cleaning to high standards 70 units on 30 locations in Denmark Price of fuel significantly lower than compeeting fuels (negative price) Consists - in broad terms - of: Organic matter (combustible) - carbon dioxide neutral Plastic (comustible) - releases CO2 to the atmosphere Metal and minerals (incomustible) Water (incombustible)

Recycling versus waste Energy No energy output Reuse of ressources organic matter plastic metals Comes at a cost Waste collection systems Upgrading used procucts The Renescience project (excample at ARC) Recycling is gold I doubt it Gold: 242.000.000 DKK/ton Waste: -200 DKK/ton Wood: 1000 DKK/ton Subsitutes other fuels economy carbon balance New production of ressources organic matter plastic metals

The oldest slide in my collection

Biomass energy The forest does nopt disappear when we cut the trees Claim: biomass for energy reduces raw material access to timber, paper etc. - pressure on land for other purposes Response: markets can manage. Forest owner will act according to economic rationality Forest production are far larger than use

Loss of "energy oportunity" Should we leave biomass ressource untouched (decay)? Biogas slurry fraction Landfill Forestry residues Straw Garden waste For what purpose? Should the Norwegians let water run to the spillway (bypassing the turbines)?

The district heating system in Copenhagen

Production of Renewable Energy in Denmark by Type 1 July 2009 17th Biomass in Hamburg Source: Danish Energy Agency

Forest cover in Europe Kilde: Andreas Schuck, European Forest Institute, 2002

Thank you! 1 July 2009 17th Biomass in Hamburg