Operations at the Camas MillCamas Paper Mill Homepage
Pulping and Bleaching Processes: The Camas mill has two sawdust digesters and one continuous digester that converts hardwood and softwood chips into wood pulp. That pulp is washed and sent through an oxygen delignification system to remove more of the lignin (the “glue” that holds the fibers together) and then washed again. Finally, the pulp is sent to the bleach plant where chlorine dioxide is used to make the pulp white for use in the final products.
Paper Machines: The mill operates two paper machines: one making copy paper and one making paper towels.
Converting: The tissue converting area has seven rewinders and folders that transform large “parent rolls” into individual rolls of towels. The copy paper converting area uses two sheeters to cut large rolls into various sizes for use in printers and copiers.
Power and Recovery Process: The mill has one recovery boiler that uses byproducts from the pulp cooking process to generate steam, produce electricity, and recover up to 95% of cooking chemicals used in the pulping process. This helps the mill be more energy efficient and along with other processes helps recover and reuse as many of the chemicals as possible. The mill also has two power boilers that also produce steam and power.
Wastewater Treatment: The Camas mill’s wastewater treatment system has a primary clarifier to allow wood fibers to settle out of the wastewater before it is treated. The treatment system also has an aerated stabilization basin, which uses a biological treatment process to make sure the mill’s wastewater meets all state and federal permit requirements before it is released.