Effect of hydraulic retention time (HRT) on sulfur-driven autotrophic denitrification of municipal wastewater

Key Points

• Nitrogen removal efficiency improved with increased hydraulic retention time, optimizing processes in wastewater treatment.
• A notable 30% increase in nitrogen removal was observed at a hydraulic retention time of 10 hours compared to shorter times.
• Assessment utilized a series of batch reactors to analyze conditions impacting autotrophic denitrification with sulfur.
• Highlights the need for further exploration of hydraulic retention time to maximize treatment efficiency in municipal wastewater.