Project summary
New sewage system to allow expansion of care home
Originally a 35 bedroom nursing home, plans to extend the nursing home to a 70 bedroom high class care home meant that the existing RBC (rotating biological contactor) sewage treatment plant would not be large enough to cope with the additional flows. MJ Abbott Limited was employed to look at the feasibility of a larger treatment plant or to investigate the options for pumping the sewage to the mains.
After carrying out level surveys, ground feasibility and dealing with planning and building control, it was decided that pumping to the mains was the most economical solution when looking at the design life of the proposed system.
With the sewer nearly 900m away from the site, the design was considered carefully to avoid septicity within the pumping main. A temporary septicity control dosing pump was installed until the nursing home was at full capacity to ensure that the pumping main was cleansed regularly.
The project scope of work comprised:
- Installation of a 4.5m deep x 2.1m diameter T-T Pumps packaged sewage pumping station
- Installation of a dual pump control panel with high level audible and visual alarm
- Installation of 2 no 100mm solids handling submersible pumps
- Gravity pipework to divert the existing effluent to the new pumping station
- 900m of 125mm HPPE pumping main installed in the verge of the A36 Salisbury to Southampton trunk road
- Connection to Southern Water sewer in the public highway
- Installation of septicity control dosing pumps and solution
- Supply of a new 85 kVA back up generator for the nursing home for automatic start during mains electric power outage.
On successful completion and commissioning of the installation, client Alphacare Holdings’ representative, John Bulmer, commented: “The professionalism and constant communication between MJ Abbott Limited and ourselves were second to none. The project from initial site meeting to handover could not have run any smoother.”
