PMID- 21922823
OWN - NLM
STAT- MEDLINE
DCOM- 20120430
LR  - 20161018
IS  - 0250-3301 (Print)
IS  - 0250-3301 (Linking)
VI  - 32
IP  - 7
DP  - 2011 Jul
TI  - [Forming processes of micro-ecology in anaerobic sludge granulation].
PG  - 2013-8
AB  - By use of the fluorescence in situ hybridization (FISH) and the polymerase chain 
      reaction-denaturing gradient gel electrophoresis (PCR-DGGE) methods, the 
      diversity and similarity of microbial community during anaerobic sludge 
      granulation were studied. The relative abundance and their succession of 
      H2-producing acetogens (HPA), homoacetoges (HOMA) and methanogens were monitored. 
      And the whole forming processes of micro-ecology were investigated 
      correspondingly. The results showed that for an anaerobic reactor during normal 
      startup, only through 33-days continuous operation, the healthy microecology of 
      granular sludge could be formed, which is much less than the growth period of 
      granular sludge ( > 180 d) and the time for achieving good COD removal (about 50 
      d). During the granulation processes of anaerobic sludge, the Shannon-Wiener 
      diversity index of the microbial community increased firstly to 3.11 and then 
      decreased to 2.88, and their similarity increased from 44% to 86% continuously. 
      It is through these three stages, namely the adaptive stage, the growth stage and 
      the stabilization stage in turn, the stable microecology could be formed 
      gradually. In the initial granulation stage, the methanogens had a higher growth 
      speed, resulting in methanogens, HPA and HOMA studied being produced in a ratio 
      of approximately 42: 2: 1, respectively. However, with the healthy mocroecology 
      been formed gradually, the ratio of methanogens to HPA and HOMA decreased to 2.8: 
      2.4: 1.0 finally.
FAU - Peng, Jian-Feng
AU  - Peng JF
AD  - Department of Urban Water Environmental Research, Chinese Research Academy of 
      Environmental Sciences, Beijing 100012, China. pjf1995@163.com
FAU - Song, Yong-Hui
AU  - Song YH
FAU - Liu, Ran
AU  - Liu R
FAU - Wang, Yi-Li
AU  - Wang YL
FAU - Yuan, Peng
AU  - Yuan P
FAU - Gao, Hong-Jie
AU  - Gao HJ
LA  - chi
PT  - English Abstract
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - China
TA  - Huan Jing Ke Xue
JT  - Huan jing ke xue= Huanjing kexue
JID - 8405344
RN  - 0 (Sewage)
SB  - IM
MH  - Bacteria, Anaerobic/classification/*physiology
MH  - Bioreactors/*microbiology
MH  - Ecology
MH  - Facility Design and Construction
MH  - In Situ Hybridization, Fluorescence
MH  - Polymerase Chain Reaction
MH  - Population Dynamics
MH  - Sewage/*microbiology
MH  - Waste Disposal, Fluid/*methods
EDAT- 2011/09/20 06:00
MHDA- 2012/05/01 06:00
CRDT- 2011/09/20 06:00
PHST- 2011/09/20 06:00 [entrez]
PHST- 2011/09/20 06:00 [pubmed]
PHST- 2012/05/01 06:00 [medline]
PST - ppublish
SO  - Huan Jing Ke Xue. 2011 Jul;32(7):2013-8.