EFCT: Environmental Footprint Comparison Tool.  A tool for understanding environmental decisions related to the forest products industry.  BOD/COD/TSS. headerlink
Effects of decreased release of BOD/COD & TSS on odor

Objectionable odors can arise from a number of sources. Reduced sulfur odors, causing a “rotten egg” smell, have been associated with emissions from kraft mills, although recent control requirements have greatly reduced these odors. At an increasing number of kraft mills, process-related odors are noticed in communities only during intermittent process upsets. Reduced sulfur compounds as well as other types of compounds (e.g., certain organic acids) can also create odors that are noticed in the vincinity of virgin and recycled paper mill waste treatment facilities.

Recycled paper mills do not have the reduced sulfur process-related odors that are associated with kraft mills, but other common sources of community odor are not related to whether a mill is a recycled or virgin mill.

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