After a successful pilot of 18 months, PWNT has been assigned to build the new North Plymouth Water Treatment Works for South West Water (UK). This new plant will have a capacity of 90 MLD and combines suspended ion exchange (SIX®), inline coagulation adsorption (ILCA®) and ceramic membrane microfiltration (CeraMac®). In combination with the conventional technologies, like UV technology and active carbon filtration (GAC), sustainable water treatment can be effectuated against reduced operational costs and the use of less energy and less chemicals, that results in less impact on the environment.  It is the first time that this technology has been used in the UK. The new plant will be operational by the end of 2018. It will replace the existing Crownhill Water Treatment Works.

In 2011 PWN Technologies and South West Water started a collaboration and feasibility project for the introduction of SIX®/CeraMac® in the Southwest of England. In August 2012 PWN Technologies and South West Water signed an agreement for the delivery of a SIX®/CeraMac® pilot facility.

This facility was commissioned in February 2013 and was tested over a period of 18 months to confirm feasibility and to establish operating and design criteria. In October 2014 South West Water took the next step in the building of a 90 MLD combined ion exchange and ceramic microfiltration plant by engaging  PWN Technologies with the design for their new North Plymouth Water Treatment Works.

Chris Rockey, South West Water’s Science and Water Quality Manager, said: “South West Water’s aim is to continue to provide good, safe drinking water that has the trust of our customers, while minimising the cost of water treatment and our impact on the environment.

“The processes required to produce high-quality drinking water have traditionally been both energy and chemical-intensive and produce a lot of waste. Advances in drinking water technology and new approaches to the management of raw water supplies are beginning to offer more cost-effective and sustainable alternatives to how drinking water is produced.”

Jonathan Clement, CEO of PWN Technologies: “We have always been convinced of the advantages of our technologies. We are very pleased that South West Water has recognized these advantages of our technology and we are looking forward to working together with the South West Water team and partner H5O.”


SWW Pilot on BBC Spotlight

Report by BBC business correspondent Neil Gallacher on South West Water’s pilot, its technology and the next steps to ensure reliable drinking water: a new, large scale treatment plant. Chris Rockey explains the benefits.

SWW Pilot Video

South West Water’s SIX®/CeraMac® pilot was pre-constructed in The Netherlands, and transferred to the UK, with Plymouth as final destination. But how does it actually work?

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