Nereda design capacity

  • 5285 m3/d
    Dry Weather Flow
  • 1368 m3/h
    Peak Flow
  • 23190 PE
    PE (PE = 60 gBOD/d)

Project facts

  • Client
    United Utilities
  • Licensee
  • Location
    Failsworth, east of Manchester, UK
  • Period
  • Wastewater
  • Project type
  • Process configuration
    Pre-treatment + Nereda

About Nereda® at Failsworth Wastewater Treatment Plant in UK

Failsworth is a town in Greater Manchester, England, which is 6 km northeast of Manchester and 4.7 km southwest of Oldham.

The challenge

To meet the required improvement in the water quality of the River Medlock, United Utilities developed the Medlock Quality Improvement Programme. Part of this programme of work included increasing the flow capacity at Failsworth WWTP from 190l/second to 450l/second. Additional storm water storage was also included in the catchment and at the works, in order to minimise intermittent discharge to the watercourse and improve river water quality. The treated water was required to maintain a total phosphorus concentration of less than 2 mg/l.

The solution

On behalf of United Utilities, contract partner LiMA selected Nereda technology to meet the required effluent quality requirements. With its high effluent quality standards and small footprint, the Nereda process provides United Utilities with an innovative and sustainable solution. The upgrade work, designed to improve river quality, included an influent buffer and three 3000m³ Nereda reactor tanks to treat wastewater arising from 23,190 p.e. The Nereda reactors will have the capacity to treat a peak flow of 1,368 m³ wastewater per hour, to ensure it can treat more of the storm water flow. In addition, 10,000m³ of additional storm water storage will be constructed at the works.

The outcome

The team started on site in May 2018 and the project was delivered and operational by end of 2019, to meet statutory requirements. On completion, the flows received pre-treatment screening and de-gritting to achieve BOD consent of 15 mg/l.


  • Compact footprint

  • Improved water discharge 

  • Improved environmental impact

  • Cleaner river water

  • Integral to wide scheme