ActiveCell™ Processes
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Total Nitrogen Removal
ActiveCell450™ in operation
The ActiveCell™ process enables total nitrogen removal in compact volumes via provision of high-density nitrifying and denitrifying bacteria populations.
Hydroxyl designs total nitrogen removal processes in multi-stage configuration typically with nitrification processes followed by denitrification processes. ActiveCell biofilm carrier technology is employed to achieve the necessary density of heterotrophic and autotrophic bacteria within staged aerobic and anoxic processes.
Pre-Denitrification achieves nitrogen without use of an external carbon source and is therefore attractive from an operating cost viewpoint. This process requires a recycle of nitrified effluent to an anoxic stage where it mixes with the influent.
Post-denitrification can be achieved as a serial stage after nitrification, requiring an external carbon source addition. It is typically attractive due to volumetric efficiency.
ActiveCell total nitrogen removal processes are commonly used in decentralized wastewater treatment systems for their ease of operation and elimination of bulking problems.
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