South West Water takes another major step towards new advanced water treatment plant

South West Water, the water utility that serves customers and visitors in the South West of England, takes the next step in the building of a 90 MLD combined ion exchange and ceramic micro-filtration plant by engaging PWN Technologies with the design for their new North Plymouth Water Treatment Works.

The new Water Treatment Works will replace the existing Crownhill Water Treatment Works. The new combined Suspended Ion eXchange (SIX®) and ceramic micro-filtration (CeraMac®) plant will result in lower operational cost and higher finished water quality.

The new plant needs to treat Burrator reservoir water and water from the rivers Tavy and Tamar. The water has a high content of humic substances. The SIX®, In-Iine Coagulation Absorption (ILCA) and CeraMac® technologies will form the core of the new treatment train, which also will consist of GAC and UV treatment. The new treatment plant will be integrated into the existing drinking water infrastructure. South West Water has requested PWN Technologies to cooperate with H5O, its capital delivery alliance, to prepare a design for this project. PWN Technologies will be responsible for the design of its proprietary treatment steps.

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.“

Since April 2013 a pilot plant has been built and operated where the treatment steps are undergoing pilot testing to confirm feasibility and to establish operating and design criteria. The finalization of the advanced design is targeted for mid December 2014.