Biological wastewater treatment can be effective in nitrification (that is transforming ammonia nitrogen to nitrite and nitrate) but ineffective in removing nitrogen in these oxidized forms.

Under certain treatment conditions nitrate/nitrite ions can build up in effluent water. Under these conditions MICROCAT^®-DEN can help. MICROCAT^®-DEN combines preselected, naturally-occurring microbial strains with denitrifying capability. MICROCAT^®-DEN contains a combination of facultative anaerobic microorganisms selected from nature for their ability to use nitrate as an oxygen source. Inoculation with MICROCAT^®-DEN augments the natural denitrifying microbial populations for enhanced nitrate/nitrite removal capability.