During the shutdown, the base and air system of the recovery boiler were replaced. This will improve the boiler's combustion management and, therefore, will lead to a reduction in NOx emissions (nitrogen oxides).
In addition, the chip silo and chip heating systems were upgraded according to the mill's current capacity. This investment significantly reduces any odour emissions from the chip silo. Chips are heated in the silo using pure steam that is generated using secondary heat from the boiler. Exhaust gases from the silo are burned off after processing.