During the last few years, waste management in Austria has been influenced by the Landfill Ordinance of 2004. The high quality standards for landfilled residues demand pre-treatment for specific waste types.
The main objective of the Ordinance is to reduce the landfilling of untreated waste from households and similar establishments in order to reduce emissions from landfills in the future. In addition to the high quality standards for landfilled residues, the Landfill Ordinance demands gas collecting systems for specific landfill types.
Mechanical-biological treatment (MBT), used as a pre-treatment process, splits up waste from households and similar establishments into high calorific and low calorific fractions. Then, in waste incineration, the untreated waste and the high calorific fraction from MBT are used to generate energy.
The low calorific fraction from MBT is stabilised by aerobic biological treatment to be finally landfilled. Residues from waste incineration can be landfilled if the waste quality complies with the landfill quality standards.
Mechanical-biological treatment (MBT)
Altogether, 17 plants for the mechanical-biological treatment of household waste are in operation throughout Austria.
MBT plants for household waste in Austria
Location
Present capacity (tons/yr)
Aich-Assach (STMK)
9.500
Allerheiligen (STMK)
17.100
Fischamend (NÖ)
27.000
Frohnleiten (STMK)
65.000
Frojach-Katsch (STMK)
15.000
Halbenrain (STMK)
70.000
Kufstein (T)
9.500
Lavant (T)
17.500
Liezen (OÖ)
31.000
Linz (OÖ)
60.000
Neunkirchen (NÖ)
45.000
Ort im Innkreis (OÖ)
15.000
Oberpullendorf (B)
80.000
Siggerwiesen (SBG)
145.000
St. Pölten (NÖ)
47.000
Wiener Neustadt (NÖ)
24.000
Zell am See (SBG)
27.000
Sum total
max. 686.350
Thermal waste treatment
In addition to MBT, household wastes and wastes from similar establishments are treated in waste incineration and co-incineration plants. A co-incineration plant is an incineration plant in which waste is used as a substitute or additional fuel.
Because of the requirements of the combustion technology for co-incineration plants (fluidised bed), the high calorific fraction from MBT is preferably used in co-incineration plants. Untreated household waste is mostly incinerated in waste incineration plants with grate firing.
Waste incineration plants for household waste in Austria