PMID- 21360883
OWN - NLM
STAT- MEDLINE
DCOM- 20110805
LR  - 20161018
IS  - 0250-3301 (Print)
IS  - 0250-3301 (Linking)
VI  - 31
IP  - 12
DP  - 2010 Dec
TI  - [Effects of C/P on the competition between PAOs and GAOs and PHAs metabolism in 
      EBPR system].
PG  - 2938-44
AB  - Based on accumulating enrich phosphorus accumulating organisms (PAOs) in 
      activated sludge and by fluorescence in situ hybridization (FISH) technique, the 
      effects of C/P (25: 1, 20: 1, 15: 1 and 10: 1) on flora changes and 
      polyhydroxyalkanoates (PHAs) metabolism in enhanced biological phosphorus removal 
      (EBPR) system were systematically studied. The results show that after 10 days 
      treatment (acetate as carbon source), the systems with C/P of 25: 1, 20: 1 and 
      15: 1 have good phosphate removal rate (> 88%); while for C/P of 10: 1 system, 
      the phosphate removal rate was 0%. FISH results showed that the content of PAOs 
      decreased from( 76.42 +/- 1.24) % to (10.40 +/- 0.97) % with C/P decreasing from 
      25: 1 to 10: 1, while glycogen accumulating organisms (GAOs) increased from 
      (16.36 +/- 3.41)% to (34.25 +/- 2.59)%. In various C/P systems in the anaerobic, 
      the production kinetic coefficients of PHB and PHV were K25: 1 > K20: 1 > K15: 1 
      > K10: 1 and K15: 1 > K20: 1 > K25: 1 > K10: 1, respectively. The PHB production 
      in the proportion of PHAs decreased from 85% to 24%, while PHV increased from 15% 
      to 76% with C/P decreasing from 25: 1 to 10: 1. For various C/P systems in the 
      aerobic phase, their consumption kinetic coefficients of both PHB and PHV were 
      K:20: 1 > K25: 1 > K15: 1 > K10: 1. PHB (the proportion of PHAs is 71% -75%) was 
      the main consumption component in C/P of the 25: 1, 20: 1 and 15: 1 systems; 
      while PHV(the proportion of PHAs is 71%) was the main consumption component in 
      C/P of 10: 1 system. It is suggested that an increases of GAOs and decreases of 
      PAOs in the EBPR system lead to the decreasing of PHB production and consumption, 
      and to the increasing of PHV.
FAU - Jiang, Tao
AU  - Jiang T
AD  - School of Environmental Science and Engineering, Zhejiang Gongshang University, 
      Hangzhou 310012, China. taosjunior@gmail.com
FAU - Fang, Jing
AU  - Fang J
FAU - Sun, Pei-De
AU  - Sun PD
FAU - Zhong, Xiao
AU  - Zhong X
FAU - Xu, Shao-Juan
AU  - Xu SJ
FAU - Fang, Zhi-Guo
AU  - Fang ZG
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 (Polyhydroxyalkanoates)
RN  - 0 (Sewage)
RN  - 0 (Water Pollutants, Chemical)
RN  - 27YLU75U4W (Phosphorus)
RN  - 7440-44-0 (Carbon)
RN  - 9005-79-2 (Glycogen)
SB  - IM
MH  - Aerobiosis
MH  - Anaerobiosis
MH  - Bacteria/*metabolism
MH  - Biodegradation, Environmental
MH  - Bioreactors/microbiology
MH  - Carbon/analysis
MH  - Glycogen/metabolism
MH  - In Situ Hybridization, Fluorescence
MH  - Phosphorus/analysis/*isolation & purification
MH  - Polyhydroxyalkanoates/*metabolism
MH  - Sewage/microbiology
MH  - Waste Disposal, Fluid/*methods
MH  - Water Pollutants, Chemical/analysis/*isolation & purification
EDAT- 2011/03/03 06:00
MHDA- 2011/08/06 06:00
CRDT- 2011/03/03 06:00
PHST- 2011/03/03 06:00 [entrez]
PHST- 2011/03/03 06:00 [pubmed]
PHST- 2011/08/06 06:00 [medline]
PST - ppublish
SO  - Huan Jing Ke Xue. 2010 Dec;31(12):2938-44.