The Bayfield mechanical wastewater treatment plant (WWTP) and the Pikes Bay Sanitary District (PBSD) aerated lagoon WWTP were both at the end of their design lives, yet flows and loadings to both plants continued to increase because of growing tourism in the area. For these reasons, state agencies were interested in development of a regional WWTP.

We completed design, bidding, construction, start-up, and training services for the new regional WWTP. The facility consists of fine screening, extended aeration activated sludge treatment with biological nutrient removal for phosphorus and nitrogen, a backup chemical phosphorus removal system, final clarification, innovative cloth disk filtration, ultraviolet disinfection, and discharge to a dry run tributary to Lake Superior.

This combination of technologies achieves a very high quality effluent while facilitating the expansion of the plant as future demand grows.

Seventy percent of the project funding came from outside agencies.

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