BIOCOS®

BIOCOS® (BIOlogical COmbined System) is an innovative and sustainable wastewater treatment technology that combines the robustness of activated sludge with the efficiency of granular sludge. Designed as a fully hydraulic, air‑controlled process, BIOCOS® delivers high treatment performance in a compact and cost‑effective system, making it an attractive alternative to conventional activated sludge plants.
The technology uses unique sludge selection and a cyclic process entirely driven by air, eliminating the need for pumps, mixers or other submerged mechanical equipment. When combined with inDENSE® technology, BIOCOS® forms a dense, fast‑settling biomass that ensures excellent removal of carbon, nitrogen and phosphorus (Bio‑P). This results in consistently high effluent quality, low maintenance requirements and energy savings of up to 25%.
With its small footprint, proven reliability and more than 150 installations worldwide, BIOCOS® is ideally suited for both new plants and upgrades where space, energy efficiency and operational simplicity are key.