Duluth Sanitary District First in U.S. to Take Charge of Both Sewage and Refuse

by Eugene E. Dallaire, Asst. Editor; Civil Engineering Magazine, New York, NY 10017,

Serial Information: Civil Engineering—ASCE, 1980, Vol. 50, Issue 6, Pg. 60-63

Document Type: Feature article

Errata: (See full record)


The Western Lake Superior Sanitary District, serving Duluth, Minnesota and its suburbs, is the first sanitary district in the U.S. to be responsible for both wastewater and municipal refuse disposal. Within the past two years, a single, central, advanced wastewater treatment plant has gone on-stream that replaces several aging primary plants. The start-up of this plant has produced a dramatic improvement in the quality of the receiving waters around Duluth. All the sludge generated by the plant will be burned—together with most of the municipal refuse from the region — in a fluidized-bed furnace. Heat recovered is used to make steam for running plant equipment and for heating buildings.

Subject Headings: Wastewater treatment plants | Sewage | Municipal wastewater | Water quality | Lakes | Suburbs | Waste disposal | Sludge | Lake Superior | Great Lakes | Minnesota | United States

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