Ultra-stable Mixotrophic Denitrification Coupled with Anammox under Organic Stress for Mainstream Municipal Wastewater Treatment

Sulfur-based autotrophic denitrification (SAD) coupled with anammox is a promising process for autotrophic nitrogen removal in view of the stable nitrite accumulation during SAD. In this study, a mixotrophic nitrogen removal system integrating SAD, anammox and heterotrophic denitrification was established in a single-stage reactor.