PMID- 23233982
OWN - NLM
STAT- MEDLINE
DCOM- 20140224
LR  - 20221207
IS  - 0250-3301 (Print)
IS  - 0250-3301 (Linking)
VI  - 33
IP  - 10
DP  - 2012 Oct
TI  - [Denitrifying phosphorus removal in a Modified University of Cape Town (MUCT) 
      process treating domestic wastewater under nitrification and nitritation].
PG  - 3513-21
AB  - The performance of denitrifying phosphorus removal under nitrification and 
      nitritation was investigated in a lab-scale Modified University of Cape Town 
      (MUCT) process treating real domestic wastewater with low C/N ratio. The 
      experimental results of 180 days showed that nitritation was achieved at short 
      hydraulic retention time (HRT) and low dissolved oxygen (DO) of 0.3-0.5 mg x 
      L(-1), and an average nitrite accumulation rate (NAR) of above 70% was achieved 
      during nitritation stage. The MUCT process showed a good performance of 
      denitrifying phosphorus removal. Under nitritation mode, total and denitrifying 
      phosphorus removal efficiencies were 90% and 91%, respectively; under 
      nitrification mode, total and denitrifying phosphorus removal efficiencies were 
      60% and 88%, respectively. Although phosphorus removal performance under 
      nitritation was better than that under nitrification, the results of fluorescence 
      in situ hybridization (FISH) indicated that the percentage of phosphorus 
      accumulating organisms (PAOs) in biomass was about 37% under two modes. The 
      effluent COD concentration was below 50 mg x L(-1) during the experimental 
      period. Batch tests of different nitrifying sludges showed that the percentage of 
      denitrifying phosphorus removal bacteria (DPBs) in PAOs using NO2(-)-N as an 
      electron acceptor under nitritation mode was almost the same as that using 
      NO3(-)-N as an electron acceptor under nitrification mode, with an average 
      percentage of 38%. Compared with nitrification mode with conventional phosphorus 
      removal, nitritation mode with denitrifying phosphorus removal has a superior 
      performance treating limited carbon source wastewater.
FAU - Zeng, Wei
AU  - Zeng W
AD  - College of Environmental and Energy Engineering, Beijing University of 
      Technology, Beijing 100124, China. zengwei_1@263.net
FAU - Wang, Xiang-Dong
AU  - Wang XD
FAU - Zhang, Li-Dong
AU  - Zhang LD
FAU - Li, Bo-Xiao
AU  - Li BX
FAU - Peng, Yong-Zhen
AU  - Peng YZ
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 (Waste Water)
RN  - 27YLU75U4W (Phosphorus)
RN  - 7440-44-0 (Carbon)
SB  - IM
MH  - Bioreactors/*microbiology
MH  - Carbon/chemistry
MH  - Denitrification
MH  - *Nitrification
MH  - Phosphorus/*isolation & purification/metabolism
MH  - Waste Disposal, Fluid/*methods
MH  - Wastewater/chemistry
EDAT- 2012/12/14 06:00
MHDA- 2014/02/25 06:00
CRDT- 2012/12/14 06:00
PHST- 2012/12/14 06:00 [entrez]
PHST- 2012/12/14 06:00 [pubmed]
PHST- 2014/02/25 06:00 [medline]
PST - ppublish
SO  - Huan Jing Ke Xue. 2012 Oct;33(10):3513-21.