The Process, which is patented, is based on the biofilm principle and utilises the advantages of activated sludge and previous biofilm systems without being restrained by their disadvantages.

The process is feasible for all types of wastewater: industrial and municipal, and is used for both organic and nitrogen removal. The flexibility of the Kaldnes Moving Bed™ process makes it an ideal solution for new plants and upgrading of old plants.

The process can be delivered as a pure biofilm facility, as pre-treatment, or combined with activated sludge.

The core of the process is the biofilm carrier elements that are made from polyethylene with a density slightly below that of water. The elements are designed to provide a large protected surface area for the biofilm and optimal conditions for the bacteria culture when the elements are suspended in water.

Kaldnes Miljøteknologi has developed carriers with different shape and size. This gives us the flexibility to use the best suitable carrier depending on wastewater characteristics, pre-treatment, discharge standards and available volumes.

Kaldnes Moving BedTM benefits

• Compact
• Robust biofilm process
• Flexible reactor design
• Easy upgrading of existing plants
• Easy to operate and control
• No clogging of biofilm carriers
• No sludge return
• Low load on particle separation