The highest odour emissions (ouE/h) at iron foundry were measured at the beginning of the cooling line (MP2: FA119) and at the filter of sand reclamtion (MP4: PA8, PA9) and The total odour emissions at iron foundry were 1 748 978 483 ouE/h. The total odour emission in 2012 was 86 305 ouE/h/produced ton.