Title :
Rapid cultivation of aerobic granular sludge for simultaneous nitrification and denitrification in SBAR system
Author_Institution :
Dept. of Environ. Sci. & Eng., Huazhong Agric. Univ., Wuhan, China
Abstract :
The cultivation of aerobic granular sludge used for simultaneous nitrification and denitrification (SND) in sequencing batch airlift reactor (SBAR) fed with synthetic municipal wastewater was investigated. The results showed that the aerobic granular sludge with the ability of simultaneous nitrification and denitrification could form in the reactor in a short time (35d) due to better shear force and selective pressure. The average diameter of the granules was around 1.0 mm, and MLSS and SVI were about 7g/L, 30 mg/L, respectively. Both the amount of active microorganism and removal nitrogen ability of the sludge were much better than that of conventional active sludge.
Keywords :
bioreactors; biotechnology; microorganisms; nitrogen; sludge treatment; wastewater treatment; MLSS; SBAR System; SVI; active microorganism; aerobic granular sludge cultivation; nitrogen removal ability; rapid cultivation; selective pressure; sequencing batch airlift reactor; shear force; simultaneous nitrification and denitrification; synthetic municipal wastewater; Biochemistry; Editorials; Educational institutions; Force; Inductors; Nitrogen; Wastewater; Aerobic granular sludge; SBAR; SND;
Conference_Titel :
Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on
Conference_Location :
Lushan
Print_ISBN :
978-1-4577-0289-1
DOI :
10.1109/ICETCE.2011.5774450
