PuraSAF® Submerged Aerated Filter from Bord na Mona Environmental Products US Inc.

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Source: Anua - Bord na Móna Limited

PuraSAF provides a cost effective, low energy, pre-engineered wastewater treatment solution that is simple to operate and maintain.

The filter media are produced from recycled plastic that provide an ideal medium for biological attached growth. The process uses the media to provide superior oxygen transfer rates providing a very low operating cost solution.

The filter normally operates in an upflow packed bed configuration that is readily fluidized for cleaning and desludging. In aerobic mode, PuraSAF offers a small footprint, low headloss solution for BOD, and Nitrification, and in an unaerated mode as an anoxic stage for denitrification or as a low-cost tertiary solids filter that approaches sand filter quality.

The process can be designed for a number of applications including as a secondary treatment unit, for tertiary treatment reducing ammonia on existing works or lagoon effluent, as a temporary measure while an existing asset is being refurbished or replaced; as an emergency treatment stage on a failing works; to handle seasonal peak loads and in an unaerated mode as a low cost solids tertiary filter or as a denitrification filter.

PuraSAF is available as mobile rental or lease units. The PuraSAF process can be installed as a pre-engineered package system or designed in concrete tanks.

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