CNP CYCLES GmbH

CNP CYCLES GmbH, based in Alzenau, Germany, develops process engineering solutions for energy recovery, nutrient recovery, and resource optimization at wastewater treatment plants. Operating across four business pillars — energy cycle, nutrient cycle, water cycle, and lifecycle services — the company treats wastewater as a recoverable resource rather than a waste stream. Their flagship DEMON® 2.0 deammonification process employs pH-based aeration control paired with micro-sieving for Anammox biomass retention, with over 90 reference installations worldwide. The inDENSE® biomass densification technology promotes aerobic granular sludge formation and faster settling in smaller tank volumes, while the Triple A Settler® increases primary clarification capacity without requiring new construction. For sludge management, CNP offers PONDUS® thermal-alkaline hydrolysis to enhance digestibility, DePrex® vacuum degassing to reduce digested sludge volume, and AirPrex® for phosphorus recovery from sludge liquor. On the nutrient recovery side, CalPrex® and LysoPhos® extract phosphorus from wastewater and sludge streams, addressing emerging phosphorus recovery mandates in Germany and across Europe. The ECoFlocX® process targets drinking water treatment. CNP also provides anaerobic sludge stabilization systems, gas recirculation technologies with sequential and central gas injection, and lifecycle services including operational support and sewage gas technology consulting for municipal and industrial clients.