Nereda

At the full-scale, the Nereda system consists of a cyclical process with three main cycle components or phases, namely: simultaneous fill and draw, aeration / reaction and settling.

The aerobic granules form excellent settling properties allowing for higher biomass concentrations (8g/L), the non-use of secondary clarifiers and the exclusion of major sludge recycle pumping in the Nereda system – the result is a compact (reduced plant footprints), simple system that requires significantly less chemicals and energy when compared to conventional activated sludge (CAS) systems.

[1][2] The theory of this technology has proven to work in the field and currently more than 90 wastewater treatment plants worldwide are operational, under construction or under design, varying in size from 500 up to 2,400,000 person equivalent.

Nereda was a water nymph and one of the daughters of Nereus, the wise and benevolent Greek god of the sea.

In Greek mythology Nereda is linked with the terms “pure” and “immaculate”, a reference to the water quality produced by the new technology.