Mintlaw WWTP - Secondary Treatment Plant in Aberdeenshire, Scotland

Mintlaw WWTP is a municipal wastewater treatment facility located near Baluss Bridge in Mintlaw, Aberdeenshire, Scotland. The plant serves a population of approximately 3,081 and operates under the regulatory framework of the Scottish Environment Protection Agency (SEPA). As a secondary treatment plant, it provides biological treatment to reduce organic matter and suspended solids before discharge. The plant has a designed capacity of 6,300 cubic meters per day and currently treats an average daily flow of about 686 cubic meters, indicating significant spare capacity. Under the Urban Waste Water Treatment Directive (UWWTD) as transposed in Scotland, secondary treatment is the standard requirement for inland freshwater discharges from agglomerations of this size. The treated effluent is discharged into local watercourses that drain into the River Ugie, which flows eastward to the North Sea near Peterhead. The River Ugie supports diverse aquatic life, including Atlantic salmon and brown trout, and the plant's discharge is regulated to protect these ecological receptors.

Mintlaw WWTP discharges into the River Ugie catchment, which flows into the North Sea at Peterhead. The River Ugie is a designated salmonid river supporting Atlantic salmon and sea trout populations. The plant's secondary treatment helps protect water quality in this ecologically sensitive river system, which is important for local biodiversity and recreational fisheries.