Title :
Effect of intermittently aerate on the simultaneous nitrification and denitrification (SND) in MBR
Author :
Zhang, Yan ; Wang, Hui ; Zhang, Yanqing ; Yan, Shengyong ; Yang, Zhengyang ; Wang, Lili
Author_Institution :
Beijing Key Lab. of Water Quality Sci. & Water Environ. Restoration Eng., Beijing Univ. of Technol., Beijing, China
Abstract :
A laboratory-scale intermittently aerate membrane was applied to treat domestic sewage. At hydraulic retention tims (HRT)of 6h and dissolved oxygen of 1~2mg/L in aeration, three aeration/non-aeration cycles including 60min/60min, 60min/90min and 90min/60min were experimented separately, which form microenvironment of aerobic/anoxia to reach simultaneous nitrification and denitrification. At a result, more than 90% of COD and NH4+-N was removed, among which average 74% of TN was removed in aeration/non-aeration cycles of 60min/60min. at the same time, membrane flux could be renewed in initial level approximately by chemical cleaning.
Keywords :
cleaning; hydraulic systems; aerobic; anoxia; chemical cleaning; denitrification; domestic sewage; hydraulic retention tims; laboratory-scale intermittently aerate membrane; membrane flux; nonaeration cycles; simultaneous nitrification; time 6 h; time 60 min; time 90 min; Biomembranes; Chemical industry; Chemicals; Cleaning; Educational institutions; Laboratories; Wastewater; MBR; SND; intermittently aerate; membrane cleaning;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2011 International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4244-8162-0
DOI :
10.1109/ICECENG.2011.6058297
