“Alpheus delivered the project on time and within budget, whilst maintaining a compliant effluent discharge throughout the construction works.”
Moto is the UK’s leader in motorway service areas with 45 locations throughout the country and with 6,000 staff dedicated to customer satisfaction.
Moto owns and operates the north and southbound service stations on the M3 motorway at Winchester. Wastewater generated at both service stations is treated by a single wastewater treatment plant located on the northbound site. The treatment plant, installed by a previous owner of the service station, had become overloaded as a result of increasing traffic and upgrades to the service station facilities.
In compliance with their commitment to health and safety and the environment, Moto made the decision to replace the plant and engaged consultants Pick Everard to oversee a tender process. Alpheus tendered for the project and successfully secured the contract for a turnkey design-and-build solution to meet the future wastewater treatment needs of the two sites (north and southbound).
The area available for the installation of the new plant was limited and elements of the new plant were to be installed within the confines of the existing plant.
The original wastewater treatment plant on the site was based on SBR (Sequencing Batch Reactor) technology. Alpheus replaced the SBR system with a SAF (Submerged Aerated Filter) system combined with a conical primary settlement tank upstream and a lamella downstream to clarify the biologically treated effluent prior to discharge to the environment via a soakaway.
One of the key challenges of the project was maintaining the treatment of effluent whilst the old plant was removed and the new plant installed. This was achieved by using a temporary plant linked to components of the existing plant and the new plant at various points during the construction works.
Alpheus delivered the project on time and within budget, whilst maintaining a compliant effluent discharge throughout the construction works. The new plant continues to consistently produce compliant effluent, enabling Moto to focus on delivering customer satisfaction and top-quality facilities as well as meeting their health and safety and environmental goals.