Case study - Upper Uvdal wastewater treatment plant - Filter bed

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Courtesy of Filtralite Saint-Gobain Byggevarer As

The plant is designed as a traditional chemical and biological treatment plant, as a polishing step the effluent is going thru a filter bed with Filtralite before it is discharged into a small creek.

The filter bed treatment plant is built with Filtralite P in Nore and Uvdal municipal in Norway. Uvdal ski resort, some houses and several hundred holiday homes are connected to the treatment plant.

The filter bed with Filtralite P has stable discharge levels far below recommended limits. After 3 years of operation the treatment plant removed 99 % of the phosphorus, and a discharge concentration of 0,06 mg/l.

Filter media used on the site

1000 m3: Filtralite P 0-4 mm
100 m3: Filtralite NR 4-10 mm
100 m3: Filtralite NR 10-20 mm

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