PMID- 20108656
OWN - NLM
STAT- MEDLINE
DCOM- 20100218
LR  - 20190911
IS  - 1001-0742 (Print)
IS  - 1001-0742 (Linking)
VI  - 21
IP  - 5
DP  - 2009
TI  - An innovative membrane bioreactor and packed-bed biofilm reactor combined system 
      for shortcut nitrification-denitrification.
PG  - 568-74
AB  - An innovative shortcut biological nitrogen removal system, consisting of an 
      aerobic submerged membrane bioreactor (MBR) and an anaerobic packed-bed biofilm 
      reactor (PBBR), was evaluated for treating high strength ammonium-bearing 
      wastewater. The system was seeded with enriched ammonia-oxidizing bacteria (AOB) 
      and operated without sludge purge with a decreased hydraulic retention time (HRT) 
      through three phases. MBR was successful in both maintaining nitrite ratio over 
      0.95 and nitrification efficiency higher than 98% at HRT of 24 h, and PBBR showed 
      satisfactory denitrification efficiency with very low effluent nitrite and 
      nitrate concentration (both below 3 mg/L). By examining the nitrification 
      activity of microorganism, it was found that the specific ammonium oxidization 
      rate (SAOR) increased from 0.17 to 0.51 g N/(g VSS x d) and then decreased to 
      0.22 g N/(g VSS x d) at the last phase, which resulted from the accumulation of 
      extracellular polymers substances (EPS) and inert matters enwrapping around the 
      zoogloea. In contrast, the average specific nitrite oxidization rate (SNOR) is 
      0.002 g N/(g VSS x d), only 1% of SAOR. Because very little Nitrobactor has been 
      detected by fluorescence in situ hybridization (FISH), it is confirmed that the 
      stability of high nitrite accumulation in MBR is caused by a large amount of AOB.
FAU - Zhang, Yunxia
AU  - Zhang Y
AD  - School of Environmental and Biological Science and Technology, Dalian University 
      of Technology, Dalian 116024, China. zyx9020@gmail.com
FAU - Zhou, Jiti
AU  - Zhou J
FAU - Zhang, Jinsong
AU  - Zhang J
FAU - Yuan, Shouzhi
AU  - Yuan S
LA  - eng
PT  - Journal Article
PL  - Netherlands
TA  - J Environ Sci (China)
JT  - Journal of environmental sciences (China)
JID - 100967627
RN  - 0 (Membranes, Artificial)
RN  - 0 (Nitrates)
SB  - IM
MH  - *Biofilms
MH  - *Bioreactors
MH  - In Situ Hybridization, Fluorescence
MH  - *Membranes, Artificial
MH  - Nitrates/*isolation & purification
EDAT- 2010/01/30 06:00
MHDA- 2010/02/19 06:00
CRDT- 2010/01/30 06:00
PHST- 2010/01/30 06:00 [entrez]
PHST- 2010/01/30 06:00 [pubmed]
PHST- 2010/02/19 06:00 [medline]
AID - 10.1016/s1001-0742(08)62309-8 [doi]
PST - ppublish
SO  - J Environ Sci (China). 2009;21(5):568-74. doi: 10.1016/s1001-0742(08)62309-8.