PMID- 23505876
OWN - NLM
STAT- MEDLINE
DCOM- 20130620
LR  - 20190911
IS  - 1001-0742 (Print)
IS  - 1001-0742 (Linking)
VI  - 24
IP  - 6
DP  - 2012
TI  - Start-up of the ananmmox process from the conventional activated sludge in a 
      hybrid bioreactor.
PG  - 1083-90
AB  - The anaerobic ammonium oxidation (anammox) process was successfully started up 
      from conventional activated sludge using a hybrid bioreactor within 2 months. The 
      average removal efficiencies of ammonia and nitrite were both over 80%, and the 
      maximum total nitrogen removal rate of 1.85 kg N/(m3 x day) was obtained on day 
      362 with the initial sludge concentration of 0.7 g mixed liquor suspended solids 
      (MLSS)/L. Scanning electron microscope (SEM) observation of the granular sludge 
      in the hybrid reactor clearly showed a high degree of compactness and cell 
      sphericity, and the cell size was quite uniform. Transmission electron microscope 
      photos showed that cells were round or oval, the cellular diameter was 0.6-1.0 
      microm, and the percentage of the anammoxosome compartment was 51%-85% of the 
      whole cell volume. Fluorescence in situ hybridization analysis (FISH) indicated 
      that anammox bacteria became the dominant population in the community (accounting 
      for more than 51% of total bacteria on day 250). Seven planctomycete 16S rRNA 
      gene sequences were present in the 16S rRNA gene clone library generated from the 
      biomass and affiliated to Candidatus Kuenenia stuttgartiensis and Candidatus 
      Brocadia sp., a new anammox species. In addition, the average effluent suspended 
      solid (MLSS) concentrations of outlets I (above the non-woven carrier) and II 
      (below the non-woven carrier) were 0.0009 and 0.0035 g/L, respectively. This 
      showed that the non-woven carrier could catch the biomass effectively, which 
      increased biomass and improved the nitrogen removal rate in the reactor.
FAU - Duan, Xiumei
AU  - Duan X
AD  - Key Laboratory of Industrial Ecology and Environmental Engineering, MOE, School 
      of Environmental Science and Technology, Dalian University of Technology, Dalian 
      116024, China. xiumeiduan89@gmail.com
FAU - Zhou, Jiti
AU  - Zhou J
FAU - Qiao, Sen
AU  - Qiao S
FAU - Yin, Xin
AU  - Yin X
FAU - Tian, Tian
AU  - Tian T
FAU - Xu, Fangdi
AU  - Xu F
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Netherlands
TA  - J Environ Sci (China)
JT  - Journal of environmental sciences (China)
JID - 100967627
RN  - 0 (DNA, Bacterial)
RN  - 0 (Quaternary Ammonium Compounds)
RN  - 0 (RNA, Ribosomal, 16S)
RN  - 0 (Sewage)
RN  - 0 (Water Pollutants)
RN  - N762921K75 (Nitrogen)
SB  - IM
MH  - Anaerobiosis
MH  - Bacteria/classification/genetics/*metabolism/ultrastructure
MH  - Bioreactors/*microbiology
MH  - DNA, Bacterial/genetics
MH  - Microscopy, Electron, Scanning
MH  - Microscopy, Electron, Transmission
MH  - Nitrogen/metabolism
MH  - Oxidation-Reduction
MH  - Phylogeny
MH  - Quaternary Ammonium Compounds/metabolism
MH  - RNA, Ribosomal, 16S/genetics
MH  - Sewage/*microbiology
MH  - Water Pollutants/*metabolism
EDAT- 2012/01/01 00:00
MHDA- 2013/06/21 06:00
CRDT- 2013/03/20 06:00
PHST- 2013/03/20 06:00 [entrez]
PHST- 2012/01/01 00:00 [pubmed]
PHST- 2013/06/21 06:00 [medline]
AID - 10.1016/s1001-0742(11)60871-1 [doi]
PST - ppublish
SO  - J Environ Sci (China). 2012;24(6):1083-90. doi: 10.1016/s1001-0742(11)60871-1.