• Hydrotech Provides Gryaab Wastewater Treatment Plant the World’s Largest Discfilter Installation

Water/Wastewater

Hydrotech Provides Gryaab Wastewater Treatment Plant the World’s Largest Discfilter Installation

Sep 08 2010

Gryaab AB has chosen Hydrotech, a Veolia Water Solutions & Technologies company, to provide the Hydrotech Discfilter filtration solution for its wastewater treatment plant. The Gryaab WWTP, having a 864000 m3 daily capacity has indeed a 32 Hydrotech’s HSF2200-series Discfilters’units, making this installation the world’s largest of its kind. The Discfilters operation started on the 3rdJune, during an official opening ceremony.

Gryaab wastewater treatment plant, located in Gothenburg, Sweden’s second largest city, needed to be upgraded in order to fulfill water treatment’s new requirements and especially for Phosphorous removal, with a 0,3 mg P/l rate. The plant was then rebuilt including the addition of a Discfilter installation in order to filter all kind of effluents. A completely new denitrification facility, based on the AnoxKaldnes MBBR™ technology was also installed.

The plant’s filtration step is made of Hydrotech Discfilter series HSF2200, high performance media filters for fine solids removal and product recovery. Offering a large filter area for a small footprint with a compact design, this technology is a good choice for wastewater effluent polishing, especially where a space-saving filter with fine filter openings and larger filter area is required.

As the available space was extreme limited, the Hydrotech Discfilters solution’s small foot print, compared to other techniques, made it the ideal technology for Gryaab plant’s specifications and needs.


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