Altri has developed an integrated approach to the forest management maximising the efficient use of this resource.
The pulping process produces a waste stream of spent pulping liquor. Pulp mills burn the pulping liquor to recover and recycle the chemicals used in the pulping process. These chemical recovery boilers supply pulp mills with process steam and cogenerate the steam and electricity.
Forest biomass results from tree tops, limbs and cull material left over from logging activity. The forest biomass is burned in a biomass-fire boiler that transfers the heat from combustion into steam that is used to produce electricity.