Stokesley STW Upgrade – Iron Compliance

Water & Wastewater

Stokesley STW Upgrade – Iron Compliance

Project Summary

Retroflo were engaged by Esh/Stantec (supported by NWG) to undertake the mechanical and electrical installation of the new tertiary solids removal treatment plant at Stokesley STW. The project included pipework, valves, electrical sub-distribution, and system integration for telemetry and SCADA. Works also included installation of a new sump pump, modifications to existing street lighting, and completion of NICEIC 18th Edition inspection, testing, commissioning, and associated documentation. The upgrade improves the performance and compliance of Stokesley STW.

Scope of Works

Retroflo provided a full end-to-end service, including:

Supply and installation of above-ground 350 mm and 300 mm ductile iron pipework and valves
Supply and installation of above- and below-ground 80 mm ductile iron backwash pipework and valves
Electrical design including cable calculations, SLDs, cable diagrams and loop diagrams
Supply and installation of electrical sub-distribution for new process plant with provision for future equipment
Engagement of system integration subcontractor for telemetry and SCADA works
Installation of a new sump pump
Modifications to existing street lighting installation
Mechanical and electrical installation, commissioning and associated documentation
NICEIC 18th Edition inspection, testing and certification
Power distribution and control panel installation

Results

Fully compliant tertiary solids removal solution
Reliable hydraulic and electrical performance
Future-ready power distribution and telemetry integration
Turnkey delivery completed on time with full certification

Project Details

Client

Esh/Stantec (supported by NWG)

Project Value

£1,000,000

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Project Highlights

Enhanced Tertiary Treatment Performance

Retroflo delivered the mechanical and electrical installation of the new tertiary solids removal plant at Stokesley STW, improving treatment performance and compliance.

Comprehensive Pipework & Valve Installation

Above- and below-ground ductile iron pipework and valves were installed, including 350 mm, 300 mm, and 80 mm backwash systems, ensuring reliable hydraulic operation.

Advanced Electrical & Control Systems

New electrical sub-distribution, power distribution, and control panels were installed, designed with capacity for future plant expansion. NICEIC 18th Edition inspection, testing, and certification were completed as part of full commissioning.

Integrated Telemetry & SCADA

System integration for telemetry and SCADA was coordinated, providing real-time monitoring, control, and improved operational reliability. Additional works included a new sump pump and modifications to existing street lighting, all delivered under a turnkey M&E scope.