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Updated: May 14, 2025

Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
Published on: October 15, 2015
A critical review of sulfur autotrophic denitrification coupled with anammox
Jianing Wang1, Xiaonong Zhang1, Da Jin1
1National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
Abstract:
Anaerobic ammonium oxidation (anammox) is an environmentally sustainable process with high nitrogen removal efficiency; however, nitrite serves as the limiting factor in this process. Sulfur autotrophic denitrification (SADN) employs sulfide as an electron donor to reduce nitrate to nitrite. Therefore, coupling SADN and anammox (SDA) can improve the nitrogen removal efficiency. This review analyzes the coupling mechanisms of three common SDA systems: S0-SDA, S2--SDA, and S2O32--SDA, as well as the dominant genera in the SDA process. This paper summarizes the influence of key operating parameters, including influent nitrogen loading, pH, and the N/S ratio, on the nitrogen removal efficiency of the SDA process and the effect of S2O32- addition on microbial structure in anammox. The application of the SDA process in real wastewater treatment is analyzed in detail. Overall, this overview of the SDA process plays an important role in the direction of the SDA development.
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