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Severn Trent Water

on .

Final effluent monitors

Servitech has been contracted to design, build, install and commission effleunt monitoring packages to monitor final effluent for Severn Trents sewage treatment works.

Project description

The project is to design, build, install and commission final effluent instrumentation packages, to monitor the levels of Phosphate, Ammonia and Turbidity in the final effluent from specific waste water treatment works in the Severn Trent region. This project is ongoing and to date we have completed installations at 182 sites with a further 300 to be completed over the next 18 months.

It is a turnkey project to survey the final effluent points, on the relevant wastewater treatment works and to specify which of Severn Trent Water’s approved instrumentation list for each parameter, and its associated sample delivery system is the best fit for the site. We have designed and built bespoke cabinets and kiosks to house the instruments, when applicable, and once approved by the site manager we install and commission the finished package. Our role involves the provision of any civil engineering required, such as kiosk plinths, pathways, hand-railing and also the laying of cable ducts. The only area we are not responsible for is the drawing of cables and the connection to mains power and telemetry in the outstations, and the end to end testing of the signals.   

The process for each site is as follows: -

  1. Survey site to ascertain the nature of the final effluent measuring point, and the positions of required services.
  2. Generate proposal for approval/sign off by site manager and project team.
  3. Procure required equipment and build cabinet and or kiosk, and carry out any civils work required (all to Severn Trent specifications)
  4. Install and commission instrumentation and associated ancillary items such as sample pumps

Once the kiosk/cabinet or instrumentation are located, Severn Trent’s electrical contractor connect the electrical supply to the mains isolator in the kiosk and we then return and commission the instrumentation.

Note: Although these are standard packages we are able to incorporate any design changes that may be required in order to make sure the final product is the best fit for the site on which it is going to be used, we do not work on the basis of “one size fits all”.


Kiosk/Cabinet description:


When freestanding instrumentation cannot be used we build one of two different types of housing, the following photographs show each of these housings when they have been installed at site:-  

STW Kiosk external STW Kiosk Internal

                    Stand at kiosk - external view                                       Stand at kiosk - internal view


                                                            STW Cabinet 

                                                                                 Frame/cabinet external view



The above photographs are available in higher definition, and we are also able to provide photographs showing the kiosks in various stages of construction if required.