AnoxKaldnes™ Moving Bed Biofilm Reactor (MBBR) and Hybas™ (Hybrid Biofilm Activated Sludge) Processes

AnoxKaldnes Hybas™

The MBBR and Hybas™ processes are based on attached growth biofilm principles of biological wastewater treatment. The core of the processes is the biofilm carrier elements or media. While the biofilm is fixed to the media, the media is thoroughly mixed within a reactor and retained in the reactor.

In a MBBR application, all the biomass is attached on the media and retained in the biological reactor, so there is no return sludge. In a Hybas™ application, the reactor contains both free-floating biomass (activated sludge) and biomass attached to the AnoxKaldnes™ media. The free-floating biomass passes through the reactor, is settled and recycled back to the reactor. The media and attached biofilm remain in the reactor as in a MBBR.

Biofilm media

Kruger offers a range of biofilm media types to meet the varying demands of wastewater treatment applications. Options include the high specific-surface-area Biofilm ChipTM carriers. The high surface area of these carriers makes the most of available treatment volumes by concentrating the active biomass. For example, nitrification can be achieved in existing tanks where other media types could not provide enough surface area and, consequently, enough biomass.

AnoxKaldnes Media Types and Applications

BioChip-P

AnoxKaldnes™ MBBR and Hybas™ Benefits

  • Easy to operate and control
  • Excellent for meeting Total Nitrogen Limits
  • Highly adaptable to wide variety of tank configurations, new and existing
  • Small footprint
  • Nitrification in cold water
  • Easy implementation of pre and post treatment to existing plants for process improvements
  • Can accommodate large flow and load changes 

AnoxKaldnes™ - MBBR technology

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The ANITA™ Mox Process

ANITA™ Mox is a single-stage nitrogen removal process with low carbon footprint based on the MBBR technology. The ANITA™ Mox process is specially developed for treatment of streams highly loaded in ammonia, such as effluents from anaerobic treatment, drying condensates, industrial wastewaters, and landfill leachates.

The ANITA™ Mox process, using a single MBBR (Moving Bed Biofilm Reactor) with unique control strategy, achieves ammonia removal higher than 90% and total nitrogen removal in the range of 75 to 85% without external carbon addition and at a very low energy cost compared to conventional nitrification-denitrification.

The ANITA™ Mox process combines aerobic nitritation and anoxic ammonia oxidation (anammox).

For more information on the AnoxKaldnes™ MBBR or Hybas™ or the ANITA™ Mox process, please contact the Glenn Thesing at (919) 677-8310.