recirculation filter, capacity 45 000 m³/hour   1999

recirculation filter, capacity 80 000 m³/hour   2005

recirculation filter, capacity 80 000 m³/hour   2007

recirculation filter, capacity 53 000 m³/hour   2014

boiler house, capacity 0.84 MW   2006

boiler house, capacity 1.2 MW   2006

boiler house, capacity 1.0 MW   2012