On behalf of United Utilities, construction partner LiMA selected Nereda technology to meet the stringent effluent quality requirements at this works. With its high-quality effluent standards and small footprint, the Nereda process provides United Utilities with an innovative, reliable, efficient and sustainable solution. The new plant works on gravity from the existing pre-treatment plant at Nabs Head, where it flows via an aqueduct to the main Blackburn works. At the works six 12,000 m³ Nereda reactor tanks have been installed, along with two sludge buffers for waste sludge thickening and a water level correction buffer. The Nereda reactors have the capacity to treat 321,500 p.e. with a peak flow of 12,053 m³ wastewater per hour.