What makes paper mills stink

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In addition to kraft pulp mills, odors can come from sulfite pulp mills, wastewater treatment plants and landfills. Each of these sources has its own distinct odor. Sulfite mills emit sulfur dioxide SO2 which has a strong, choking odor. Wastewater treatment plants can have a rotten garbage odor, and landfills may have an odor from decaying organic matter. Odors from these sources will vary depending on a person's smell sensitivity, changes in wind direction, temperature, and mill processing techniques.

For example, odors may be more noticeable at night and in the early morning because of temperature changes and less wind. Under most weather conditions, the chemicals released from pulp and paper mills are diluted with clean air so health problems are not expected. Odors may still be noticed because people can smell sulfur-based chemicals, such as TRS gases, at extremely low concentrations. If the chemicals become concentrated for example, by weather conditions , area residents may experience eye and breathing irritation.

Other symptoms may include nausea and headaches. People with asthma may experience asthma episodes when the odors are strong. People with emphysema or COPD may also be at risk. These symptoms should disappear shortly after the odors disperse.

See your doctor whenever you have health problems. If after seeing your doctor you feel your symptoms are related to air quality, contact your local health department or the Division of Public Health, Additionally, monitoring data conducted by the Wisconsin Department of Natural Resources DNR shows that the cancer risk in areas with pulp and paper mills is similar to the risk in other urban areas of Wisconsin.

The DNR encourages public participation in addressing air quality issues, and your comments are encouraged. Information about past problems can be useful in evaluating air permit renewals. Contact the DNR about how to become involved in these issues.

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