Project Summary
The project was driven by requirements of the Habitats Directive (H5) and the need for capital maintenance on some of the existing assets.
The project involved the installation of a modular deep bed filter plant consisting of 10 filters The skids were connected hydraulically and electrically so that they function as a single filter. The filters were fed by a new filter feed pumping station.
The existing primary desludge pumps and the sludge transfer pumps were removed and replaced with EMS RAM pumps.
A replacement primary settlement tank scum removal and weir cleaning system was installed and modifications were made to the existing works return pumping station.
A new tertiary motor control centre (MCC) was installed within an existing building and modifications made to existing MCC’s.
Project Scope
- Tertiary treatment feed pumping station
- Tertiary treatment sand filter
- Replacement of primary desludge pumps
- Replacement of sludge transfer pumps
- Primary tank scum removal and weir cleaning
- Modifications to existing works returns pumping station
- Lifting equipment
- Tertiary treatment MCC
- Task lighting
- Roads and footpaths
Added Value/Benefits
Reduced the MCC incomer size, reducing the physical size of the incomer, allowing the MCC to be reduced by a tier and a second cableway.
Hardwire panel proposed and installed, resulting in a cost saving.
True design freeze achieved with programme and supervision requirements discussed and agreed at early stage in contract, resulting in well scoped fixed price sub-contract
Pumping station designed so that task lighting is at low level for ease of maintenance and the electrical junction boxes are installed away from guide rails, resulting in better access for lifting of the pumps.
New desludge pumps installed above ground to enable better access for maintenance as the original pumps were located below ground level.
- MCC location revised from a new kiosk to an existing building resulting in a cost saving
- Flowmeter situated above ground to enable better access for maintenance.
- The filter plant was commissioned offline, reducing any interference with Severn Trent operating the site.