Air quality across the state is being impacted by wildfire smoke (PM2.5). Information on current conditions and alerts can be found at Michigan.gov/MiAir. Learn how EGLE responds to wildfire smoke at Michigan.gov/egleWildfireSmoke
Resources on Nitrification and Denitrification for Mechanical Wastewater Treatment Plants
This page provides additional information on the nitrification and denitrification process within wastewater treatment systems. This information may be particularly useful to permittees and operators of mechanical wastewater treatment plants. Denitrification is an extra phase of treatment that is often required for wastewater treatment systems that discharge to groundwater – this extra treatment step helps ensure that the treated effluent meets the groundwater permit limitations for total inorganic nitrogen.
- Nitrification And Denitrification Facilities Wastewater Treatment (EPA)
- Wastewater Treatment: External Carbon Sources for Nitrogen Removal (EPA PDF)
- Process Design Manual: Nitrogen Control (EPA)
- Single Stage Nitrification-Denitrification (EPA)
- Additional EPA resources for single stage nitrification denitrification
EGLE Webinar Recordings
- Solids Inventory Control for Activated Sludge Wastewater Treatment Plants to Meet Total Nitrogen Removal Requirements - December 8, 2025
- Nitrogen Removal Design & Operation with Sequencing Batch Reactors (SBR) – April 2, 2025
- Total Nitrogen Removal Design and Operation Modifications for Oxidation Ditches for Wastewater Treatment – February 6, 2025
- Operation and Maintenance at Groundwater Wastewater Treatment Plants to achieve Nitrification and Denitrification – December 17, 2024