Lancashire treatment works investment: dosing and SCADA upgrades for designers
Reviewed by Tom Sullivan
First reported on New Civil Engineer
30 Second Briefing
New infrastructure at Over Kellet and Nether Kellet Wastewater Treatment Works in Lancashire includes upgraded chemical dosing equipment to improve process control and effluent quality. The investment focuses on modern dosing systems for treatment chemicals, likely targeting tighter phosphorus and ammonia limits typical of current UK discharge consents. Contractors and designers can expect increased emphasis on accurate flow-proportional dosing, bunded chemical storage, and integration with existing SCADA for real-time monitoring and optimisation.
Technical Brief
- Equipment is retrofitted within existing wastewater treatment works footprints, constraining layout and access for construction.
- Works are live-process upgrades, requiring phased tie-ins and short shutdown windows to maintain consented flows.
- Chemical storage and dosing lines must be threaded around existing tanks, pipework and buried services.
- Civil works likely limited to small plinths, pipe supports and localised trenching to avoid major structural alterations.
- Control cabling and power supplies are extended from existing MCCs, with panel space and cable routes a key constraint.
- Construction sequencing must manage tanker access for chemical deliveries while working within tight rural sites.
- Similar UK WwTW upgrades increasingly bundle minor civils, M&E retrofits and control integration into short-duration frameworks.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
