Rampton STW – Multi-Phase Upgrade for WFD & EA Compliance
Project Overview
CLient
Severn Trent Water Ltd
Project Name:
Rampton STW – Multi-Phase Upgrade for WFD & EA Compliance
Objective:
Deliver phased upgrades to meet tightening environmental regulations under the Water Framework Directive and Environment Agency (EA) compliance
Principal Contractor:
FLI Water & Glasswell & Last (G&L) Joint Venture
Scope of Works:
FLI Water and G&L have been appointed to design, construct, and commission a comprehensive upgrade programme at Rampton Sewage Treatment Works (STW). The works are being delivered in five structured phases to ensure staged compliance, enhanced process performance, and minimal operational disruption.
🔧 Phase 1 – Compliance Foundation
- Site mobilisation including road access, welfare and parking
- Installation of a new ferric dosing rig with MCC & kiosk
- Potable water supply to new dosing and welfare areas
- Final effluent monitoring for phosphorus and iron permit compliance
- Conversion of laboratory space for on-site chemical and MLSS testing
- Commissioning, reliability trials and 28-day maturation
💧 Phase 2 – Inlet & Washwater Upgrades
- New Huber inlet screen and MCERTS monitoring
- Washwater pumps, accumulation tank, and access platforms
- RAS pipework modifications
🌬️ Phase 3 – Oxidation Ditch Modifications
- Flow inducers and aeration control upgrades
- New access platforms for operational safety
🌀 Phase 4 – Final Settlement Tanks
- Refurbishment of 2 FSTs including new scraper blades and motors
- Sludge blanket detectors and bellmouth control modifications
- Installation of new final outfall pipe
🚧 Phase 5 – Sitewide Enhancements
- Completion of all civil and mechanical works including:
- Concrete roadways
- New inlet civil structures
- Washwater mechanicals and expansion vessel
- New platform and kiosk installations
- Completion of potable water system
- Concrete roadways
Stone dressing and landscaping between FST1 and FST2
Progress Update:
The project continues to progress well through the final phases, with major civil infrastructure—including ducting, slab construction, and roads—now complete. A temporary inlet screen is in operation, and full mechanical and electrical installation works are advancing across site.
Despite some logistical and environmental challenges, the site team has demonstrated exceptional resilience, keeping the project on track with a strong commitment to quality and environmental performance.
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