請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/45287
標題: Combining anoxic denitrifying ability with aerobic-anoxic phosphorus-removal examinations to screen denitrifying phosphorus-removing bacteria
作者: Shi, H.P.
李季眉
Lee, C.M.
關鍵字: anaerobic-aerobic (or anaerobic-anoxic) processes
denitrifying
phosphorus-removal bacteria
P-removal mechanism
polyphosphate
activated-sludge
phosphate-uptake
polyphosphate accumulation
waste-water
acinetobacter
release
systems
期刊/報告no:: International Biodeterioration & Biodegradation, Volume 57, Issue 2, Page(s) 121-128.
摘要: Anaerobic-aerobic (or anaerobic-anoxic) enhanced biological phosphorus- removal (EBPR) processes were generally considered for P removal. However, some isolated polyphosphate-accumulating organisms (PAOs) or denitrifying P-removal bacteria (DPB) may have varied P-removal characteristics under different conditions. This study investigated proper screening procedures for isolating DPB from piggery sludge, enriched sludge, and winery sludge. We combined anoxic denitrifying ability with aerobic-anoxic P-removal examinations to screen the DPBs as compared with conventional anaerobic-aerobic and anaerobic-anoxic P-removal examinations. It was concluded that denitrification ability detection was recommended as the first step of screening. Subsequently, denitrifiers were cultured under an aerobic-anoxic single-stage process using oxygen and nitrate simultaneously as e(-) acceptors to examine P-removal abilities. We chose single-stage aerobic-anoxic P-uptake denitrifiers (Types I and 11) according to the purpose of P removal, whereas well-grown denitrifiers without obvious P removal might be induced by considerable PHB formation. Moreover, under anaerobic-anoxic P-removal examinations, most of the isolated DPBs had no obvious anaerobic P release, but did have significant anoxic P uptake. Pure isolated DPB Cultures behaved like enriched sludge, which showed no anaerobic P release but achieved respective N- and P-removal efficiencies of 96% and 86%. (C) 2006 Published by Elsevier Ltd.
URI: http://hdl.handle.net/11455/45287
ISSN: 0964-8305
文章連結: http://dx.doi.org/10.1016/j.ibiod.2006.01.001
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