SCOTTISH Water is to become the first large-scale water agency in the world to try a new treatment system for drinking water.
It has been announced that Scottish Water will undertake the world’s first long-term trial of Arvia’s Nyex treatment system on drinking water at a specially established pilot plant in West Lothian.
The trial, which will run separately to the existing water treatment works at Pateshill near West Calder, will assess the effectiveness of the system in removing organic material from raw water.
Arvia is an English company based in Lancashire who are recognised as pioneers in treating drinking and waste water.
Their Nyex treatment system is chemical free and environmentally sound with no sludge production.
Arvia claim it is safe to operate and is low maintenance, and add that its “energy use is proportional to the organics treated – low-organic concentration, more cost-effective”.
Waterworld magazine reported: “Nyex is a tertiary treatment system which combines adsorption with oxidation in a process that has many potential applications in water and wastewater processing.
“In municipal water applications, the main advantage of Arvia’s Nyex over granular activated carbon filters is the elimination of waste – cutting the cost of having to dispose of waste solids to landfill.”
The Scottish Water trial is focused on establishing whether Nyex could have an application on hard-to-treat water with a high content of organic material, due to the impact this can have on drinking water treatment.
Waterworld added: “Bench trials have shown the Arvia system could remove 68 per cent of organic material from water, with the new pilot set to test the treatment on a larger scale to see if these results can be replicated and sustained.”
Arvia project manager Akmez Nabeerasool said: “We are delighted to be taking this pilot project to a scaled-up level, which is the first long-term drinking water application for Nyex since approval by the Drinking Water Inspectorate (DWI).
“The pilot will assess the effectiveness on a range of flow and current parameters and locate the technology at different positions in the treatment train, including before and after pre-treatment.”
Allan Mason of Scottish Water said said that the bench trials of the Arvia system produced some “excellent results”.
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