[Start-up Characteristics of SNAD Process and Functional Abundance Succession of Volcanic Rock Biological Aerated Filter].

A SNAD(simultaneous partial nitrification,ANAMMOX,and denitrification) process initiated in a submerged biological aerated filter (SBAF) was started up by seeding nitrification sludge and an ANAMMOX filter to investigate the operating characteristics and the succession of functional bacteria. The results showed that when the autotrophic nitrogen removal and denitrification were operated stably for 67 days at an initial COD concentration of 60 mg·L, the maximum nitrogen removal efficiency, the COD removal rate, and the nitrogen removal rate were 92.0%, 82.