Apart from eliminating the formation of the most environmentally significant dioxins and chlorinated
phenolic compounds to less than measurable levels, the replacement of elemental chlorine with chlorine
dioxide at North American pulp and paper mills also provides significant reduction in other chlorinated
substances and effluent color. Quantifiable levels of 2,3,7,8-tetrachlorodibenzofuran (TCDF) are now
rare, and 2,3,7,8-tetrachlorodibenzodioxin (TCDD) cannot be detected in routine effluent monitoring tests.
Oxygen-demanding substances in mill effluent, typically measured as biochemical oxygen demand (BOD)
and (COD), are more influenced by the extent of delignification prior to bleaching rather than by the
bleach plant configuration itself.
Click on the links at the right for more information.
More information:
Wastewater and water quality impacts associated with pulp bleaching
Wastewater pollutants other than organochlorine compounds
Organochlorine compounds in wastewater
- WATER
- ENERGY
- GREENHOUSE GASES
- WOOD USE
- EMISSIONS TO AIR
- DISCHARGE TO WATER
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