Sequencing batch reactor C-TECH™

for wastewater treatmentprocessautomated

C-TECH™ is an innovative wastewater treatment technology based on the cyclic activated sludge process (SBR). It combines carbon oxidation, nitrification, denitrification, and biological phosphorus removal in one continuous cycle without equalization tanks, mixers, or shock loading. All biological processes take place in one reactor. Process control is based on the oxygen uptake rate (OUR), enabling demand-driven aeration and reduced energy consumption. By operating multiple reactors in parallel, continuous inflow and outflow can be achieved. With more than 1,500 installations worldwide, we have extensive experience with projects of all sizes.
Product Features:

• Significantly reduced footprint and reactor volume compared to conventional activated sludge systems
• Reduced requirement for mechanical and electrical equipment (M+E) due to simplified plant design
• Very high removal rates for nitrogen (N) and phosphorus (P), compliant with Directive (EU) 2024/3019
• Effective suppression of filamentous microorganisms, preventing bulking sludge formation
• High operational flexibility under fluctuating influent flows and load conditions
• Lower operating costs due to energy-efficient, OUR-based process control
• Reliable nitrification even at very low temperatures
• Very low return activated sludge rate: only approx. 30% of the daily wastewater flow

Optional Process Adaptations:

• Complete nutrient removal or selective BOD/COD reduction only
• Simultaneous sludge stabilization within the reactor
• Enhanced biological phosphorus removal
• Operation with or without primary clarification
• Integration with or without anaerobic digestion of excess sludge