Waste and District Heating Aarhus

Transkript

1 Waste and District Heating Aarhus x

2 Waste and District Heating Waste and District Heating Aarhus Staff Department of Climate Action Waste WasteCenter District heating

3 A tariff financed company Politically controlled Long tradition for district heating and incineration Non-profit

4 District heating Handling and supply of approx GWh district heating based on burning waste, straw, wood pellets and wood chips A transmission system of 136 km which also covers 3 neighbouring cities customers on a distribution system of km 95 % of the inhabitants in the municipality of Aarhus are supplied with district heating

5 Transmissions- / distribution systems

6 Transmission and heat exchangers Heat exchangers Transmissions pipes Temperature o C Pressure bar

7 Cogeneration plant Cogeneration plant = Combined heat and power plant Power plant in Arizona Combined heat and power plant in Studstrup

8 Incineration plant Incinerating Cogeneration plant: The fuel is waste Incinerating plant / Combined Heat and Power plant in Lisbjerg

9 Heat production sites Waste Incineration in Lisbjerg, Waste Cogeneration plant in Lisbjerg, Straw (+ biomass) Cogeneration plant in Studstrup, (Dong Energy) Wood pellets Electric heated boilers (2 x 40 MW) Electricity Waste incineration in Skanderborg, (Reno Syd) Waste Surplus heat from industry Glue etc. 3 stand by oil boilers Oil 3 locale strawfired heating plants Straw Projects: Solar heat, heat pumps Renewable energy

10 Heatproduction i mio. kwh siden 1985 Mio. kwh Elkedel Kedelanlæg (olie) Århusværket MKA (kul) Studstrupværket SSV (kul) Studstrupværket SSV (biomasse) Skanderborg FJV (Flis) Århusværket Demo (halm) RenoSyd (Affald) AVA, AffaldsCenter (affald) Industri (overskudsvarme) 500 Solbjerg (halm)

11 Heat production in MWh as monthly mean in , , , , , , , , ,0 Elkedel Jens Juuls Vej Gellerup Aarhusværket Olieækvivalenter Skanderborg Træpiller Studstrupværket (biomasse) Studstrupværket (kul) Skanderborg Flis Renosyd Forbrændingsanlægget Overskudsvarme Halmværker ,0 0,0 Jan Feb Mar Apr Maj Jun Jul Aug Sep Okt Nov Dec

12 Waste

13 Framework - waste Authorities EU (waste directive) The Danish EPA - Regulation of waste and environment Denmark without waste the governments vision for waste Aarhus Municipality: Regulations for household waste and Regulations of industrial waste Waste plan for the municipality of Aarhus Environmental approval for incineration plant and other waste handling plans Affaldshieraki Miljømæssigt bedste løsninger Forebyg spild Genbrug produkter Genbrug materialer Brug som brændsel Deponi Mindst ønskede løsninger

14 Why?

15 Waste and sustainability Our consumption of raw materials is large and increasing Production of food, electronics, clothes, etc. leads to consumption of hidden resource.

16 Aluminium Fakta: Aluminium fra Bauxitler: 85 ton materiale-input pr. ton færdig råvare Aluminium, genanvendt: 3 ton materiale-input pr. ton færdig råvare Desuden: Der spares 9 tons CO 2 når man genanvender 1 ton aluminium = 90 % energibesparelse Kilde: (kredsløbet)

17 Plastic 5-6% of crude oil production is used for production of plastic More than 1000 types of plastic Long degradation time in nature (500 years) Plastic waste in the sea - plastic islands Micro plastic from degradation, creams, clothes, tires, etc. 1 t recycled PE and PET plastic saves 2,9 t CO 2

18 Hidden resource consumption Hidden resource consumption = The consumption of resources incl. waste products the product has caused throughout its life. Environment Foto: Paulo Santos/AP Work environment

19 How?

20 Household waste Management In Aarhus Municipality we have 7 recycling centres, 2 facilities for recycling construction waste and garden waste and 1 incineration plant In 2015 we collected 230,000 tonnes of waste in the municipality, mainly from households. 59 % was sent to recycling, 39 % was incinerated, 1 % was deposited and 1 % was sent to special treatment The waste provided 16 % of district heating

21 Waste plan I.e. - Sorting of metal and plastic and more paper/cardboard - Mobile sorting-container in the center of Aarhus - More attention on our bulky refuse solution (Storskrald) - Reuse recycling and exchange of stuff

22 Waste handling after collecting

23