RTC-SND Software Module

Product #: LXZ522 (A)
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How do you ensure aerated volume is sufficient for NH₄-N and Ntot compliance?

Unlike a plug flow system, carousel flow activated sludge systems perform nitrification and denitrification all in one treatment basin. Because DO levels fluctuate drastically from zone to zone, it is problematic to correctly place and interpret whether O₂ concentration points to an insufficient aeration process or an anoxic volume.

Rather than battle the ambiguity inherent in DO setpoints, Hach’s RTC-SND uses direct ammonium and nitrate measurements to assess aeration intensity and to control aeration and anoxic volume within the tank. Measuring NO₃-N sets safe minimum aeration to drive NO₃-N consumption as an oxygen source without releasing orthophosphate, while measuring NH₄-N allows a clear understanding of aeration intensity required to ensure the discharge levels meet user-defined setpoints. RTC-SND enables sites to prioritize between the two parameters, and to also specify a range of DO values so that aerators can activate/deactivate accordingly.

Claros Process Management solutions for nitrification/denitrification like RTC-SND are designed to make the most of your plant’s real-world conditions by transforming every uncertainty into an opportunity for measurement, responsive action, and savings.

  • Compliance at lower N levels
  • Overall process health improvements
  • Enhanced settlement
  • Typical energy savings of up to 30%
  • Validated proof control

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