Sewage Treatment Plant Installation in Norfolk – National Trust

11 December, 2014
Burnham Overy, Norfolk, PE31
Compromised Septic Tank, Failed soakaway
Tricel Sewage Treatment Plant
18 Person
Dry, Good Ground drainage

Sewage treatment plants offer Norfolk homeowners with a modern alternative to septic tank systems for areas not serviced by mains drainage. As leading independent installers and service providers for sewage treatment plants in Norfolk, Mantair is ideally placed to provide Norfolk homeowners with a sewage treatment plant to meet their site requirements, or provide the expertise required for assessing septic tank problems.

sewage treatment plant norfolk

Burnham Overy Tower Windmill in Norfolk was built in 1816 for Edmund Savory, a miller who was running a watermill on the River Burn known as the Lower Mill.  Savory worked this mill in Norfolk until his death on 9th February 1827, when it passed to his son John.  The mill was given to the National Trust in 1958 and has been converted to holiday accommodation.

The National Trust contacted Mantair with a view to installing a domestic sewage treatment plant to solve the septic tank problems at the property.  The project included the design and installation of an appropriate packaged sewage treatment plant with pumped outlet to facilitate the foul water drainage on site.  Prior to the design element of the project, Mantair carried out a full site investigation including a detailed survey of the existing drainage and underground services.

On sizing the new sewage treatment plant it was necessary to install an 18 population equivalent Tricel treatment plant to cope with the flow and strength of sewage the system would receive.

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During the design stages of the project, Mantair liaised with the Environment Agency to determine the point of discharge for the overflow from the system.  Due to site levels it was necessary to have a pumped outlet on the Tricel sewage treatment system to enable the treated effluent to be discharged to the agreed outlet point.  With the sewage treatment plant having an integral pump Mantair installed a high level alarm and beacon with back-up battery to provide instant warning of power failure.

As with all underground septic tank and sewage treatment plant installations Mantair carries out, the tank was completely encased in concrete to ensure the structural integrity of the tank is not impaired and to prevent the potential of flotation of the tank.

The scope of the installation works included:
  • Exposing the existing foul drainage pipework and installation of new drainage to the Tricel sewage treatment plant;
  • Complete installation of the Tricel treatment plant in a suitably sized excavation and backfill;
  • Installing a MEDO air blower within an existing outbuilding and provision of an RCD protected power supply;
  • Installation of the air main from the MEDO air blower to the Tricel sewage treatment plant;
  • Installation of the pumping main from the Tricel system to the point of discharge, including for the installation of an inspection chamber.

On completion of the ancillary works, we commissioned the Tricel sewage treatment plant, including setting of air valves, checking all pipe work joints and viewing the discharge into the final discharge chamber.

During the project Mantair engineers took all the necessary measures to ensure minimal disruption to the property and its surroundings.

Mantair provides a comprehensive septic tank and sewage treatment plant service throughout Norfolk. This includes free site inspections, guidance and advice on the most suitable system for our client’s requirements, complete installation, commissioning and full after sales care.

If you would like a Mantair engineer to visit you please fill out the form below or contact us on 01255 476467.