South Killingholme STW: Secondary Wastewater Treatment in North Killingholme, England

South Killingholme STW is a municipal wastewater treatment plant located in North Killingholme, North Lincolnshire, England. It serves a population of approximately 2,133 people and operates as part of the region's wastewater infrastructure. The plant is situated near the Humber Estuary, less than 10 km from the coast. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological oxidation and sedimentation to reduce organic matter and suspended solids. The plant's designed capacity is 2,944 m³/day, with an average discharge volume of 474.88 m³/day. Treated effluent from the plant is discharged into local watercourses that drain into the Humber Estuary, a major tidal estuary on the east coast of England. The Humber Estuary supports diverse aquatic life and is an important migratory corridor for birds and fish. The plant's coastal location means its discharge contributes to the overall nutrient and pollutant load entering the North Sea.

The plant discharges into local watercourses that flow into the Humber Estuary, a large tidal estuary on England's east coast. The estuary supports diverse aquatic habitats and is an important stopover for migratory birds. Ultimately, the discharge reaches the North Sea, where nutrient inputs can contribute to eutrophication in coastal waters.