Mellifiq sanitation solution removes legionella at leading animal feed facility

close up dry yeast

Lallemand Inc. chose the Ozonetech RENA Pro ozone system to tackle extensive contamination issues

Lallemand Inc. is a privately held Canadian company, founded at the end of the 19th century, specializing among others in the development, production, and marketing of yeasts, bacteria, and animal feed. One of their sites, located in Lunderskov, Denmark, is the Danish company De Danske Gærfabrikker A/S.

As in other food industries, bacteria such as legionella and salmonella pose a serious contamination threat. Due to an eventual infestation of the animal feed transportation ducts, the pathogens can spread further and put the production area at serious risk.

Lallemand chose to prevent this issue by sanitizing the entire transportation duct system with ozone. They turned to Mellifiq for a solution consisting of five Ozonetech RENA Pro ozone systems. By ozonating on weekends, they have successfully prevented contamination in the production area since 2017, with great savings and a more stable production uptime.

Product: Five Ozonetech RENA Pro A-series ozone systems


  • Name:

    De Danske Gærfabrikker

  • Location:


  • Challenge:

    Legionella abatement in production ventilation

  • Market:

    Food production

  • Project value (USD):



  • Mellifiq delivery:

    Engineering consultancy, multiple Ozonetech turn-key RENA Pro ozone systems

  • Performance:

    Complete removal of residual legionella

  • Capacity:

    10,000 m3/h

  • Solution dimensions, HxWxD (cm):