Title :
Effect of COD/NH4+-N and Influent pH on the Simultaneous Nitrification and Denitrification by Using a Sequencing Batch Reactor
Author :
Jia, Yanping ; Lv, Shuxia ; Yang, Tao ; Zhang, Lanhe ; Jiang, Guiquan
Author_Institution :
Food Sci. Coll., Shenyang Agric. Univ., Shenyang, China
Abstract :
A sequencing batch reactor (SBR) was used to treat synthetic wastewater when dissolved oxygen (DO) concentration and temperature were 0.5-1.0 mg/L, and 30±1°C respectively. Effect of COD/NH4+-N and influent pH on simultaneous nitrification and denitrification (SND) were investigated. The results indicated that removal efficiencies of ammonia nitrogen (NH4+-N), COD and total nitrogen (TN) were higher than 90%, respectively, when influent NH4+-N, COD/NH4+ and influent pH were 35-45 mg/L, 12, 7.0-8.0 under 7 hours of aeration time and 1 hour of idle time, respectively. Therefore, the SBR has obviously achieved simultaneous nitrification and denitrification.
Keywords :
ammonium compounds; bioreactors; effluents; nitrogen compounds; pH; wastewater treatment; COD removal; SBR; denitrification; influent pH; sequencing batch reactor; synthetic wastewater treatment; Dissolve oxygen; Sequencing batch reactor; Simultaneous nitrification denitrification;
Conference_Titel :
Digital Manufacturing and Automation (ICDMA), 2010 International Conference on
Conference_Location :
ChangSha
Print_ISBN :
978-0-7695-4286-7
DOI :
10.1109/ICDMA.2010.311
