Glossary

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Secondary treatment
Wastewater treatment systems that use microorganisms to convert the dissolved organic waste in the effluent into a more harmless form.
Semi-chemical pulp
A combination of chemical and mechanical pulping with properties similar to chemical pulp.
SFI
Sustainable Forestry Initiative.
SO2 (Sulphur Dioxide)
Sulphur dioxide is formed when sulphur-containing fuels such as oil and coal are burned. Sulphur dioxide contributes to the acidification of soil and water.
Softwood Pulp
Pulp made from coniferous trees.
Solid Waste Landfill
Organic and inorganic waste materials are defined, calculated and declared as completely dry matter. If not properly managed and controlled, leaks from landfill can contaminate ground water.
Sulfite pulping
Pulp produced with sulfur dioxide and calcium, magnesium, ammonium or sodium bases. The pulp can be produced at different pH levels. The higher the pH, the stronger the pulp produced.
Sulphate pulp
Paper pulp made from wood chips cooked under pressure in a solution of caustic soda and sodium sulphide. Known as Kraft.
Sustainable Forestry
A forest management process that addresses the entire eco-system, rather than trees alone.