SUMMARY

After installing a biofilter to control odors at its Ohio 
wastewater treatment plant, Dannon Yogurt still faced 
complaints from nearby residents.

THE PROBLEM

Dannon Yogurt has a plant dedicated to making Greek yogurt in Minster, OH. Dannon features its own wastewater plant on site to manage the waste byproduct of the cream used to make the yogurt.

Complaints from surrounding neighbors regarding odor began to filter in. Dannon installed a biofilter unit to 
remove hydrogen sulfide (H₂S) gas and other noxious odors. The biofilter removed the gas, but unfortunately 
created additional odors in the process. Dannon went to the biofilter manufacturer for assistance but was unable 
to obtain a solution.