PMID- 23168633
OWN - NLM
STAT- MEDLINE
DCOM- 20130304
LR  - 20141120
IS  - 0273-1223 (Print)
IS  - 0273-1223 (Linking)
VI  - 67
IP  - 2
DP  - 2013
TI  - Long-term performance evaluation of EBPR process in tropical climate: start-up, 
      process stability, and the effect of operational pH and influent C:P ratio.
PG  - 340-6
LID - 10.2166/wst.2012.552 [doi]
AB  - To date, little information is known about the operation of the enhanced 
      biological phosphorus removal (EBPR) process in tropical climates. Along with the 
      global concerns on nutrient pollution and the increasing array of local 
      regulatory requirements, the applicability and compliance accountability of the 
      EBPR process for sewage treatment in tropical climates is being evaluated. A 
      sequencing batch reactor (SBR) inoculated with seed sludge from a conventional 
      activated sludge (CAS) process was successfully acclimatized to EBPR conditions 
      at 28  degrees C after 13 days' operation. Enrichment of Candidatus Accumulibacter 
      phosphatis in the SBR was confirmed through fluorescence in situ hybridization 
      (FISH). The effects of operational pH and influent C:P ratio on EBPR were then 
      investigated. At pH 7 or pH 8, phosphorus removal rates of the EBPR processes 
      were relatively higher when operated at C:P ratio of 3 than C:P ratio of 10, with 
      0.019-0.020 and 0.011-0.012 g-P/g-MLVSS*day respectively. One-year operation of 
      the 28  degrees C EBPR process at C:P ratio of 3 and pH 8 demonstrated stable phosphorus 
      removal rate of 0.020 +/- 0.003 g-P/g-MLVSS*day, corresponding to effluent with 
      phosphorus concentration <0.5 mg/L. This study provides the first evidence on 
      good EBPR activity at relatively high temperature, indicating its applicability 
      in a tropical climate.
FAU - Ong, Y H
AU  - Ong YH
AD  - Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 
      50603 Kuala Lumpur, Malaysia.
FAU - Chua, A S M
AU  - Chua AS
FAU - Lee, B P
AU  - Lee BP
FAU - Ngoh, G C
AU  - Ngoh GC
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Water Sci Technol
JT  - Water science and technology : a journal of the International Association on 
      Water Pollution Research
JID - 9879497
RN  - 0 (Organic Chemicals)
RN  - 0 (Phosphates)
RN  - 0 (Sewage)
RN  - 27YLU75U4W (Phosphorus)
RN  - 7440-44-0 (Carbon)
SB  - IM
MH  - Anaerobiosis
MH  - Batch Cell Culture Techniques
MH  - Biodegradation, Environmental
MH  - Bioreactors/microbiology
MH  - Carbon/*analysis
MH  - Environmental Restoration and Remediation/*methods/*standards
MH  - Feasibility Studies
MH  - Hydrogen-Ion Concentration
MH  - Malaysia
MH  - Organic Chemicals/analysis
MH  - Phosphates/analysis
MH  - Phosphorus/*analysis/*isolation & purification
MH  - Sewage
MH  - Solubility
MH  - Time Factors
MH  - *Tropical Climate
EDAT- 2012/11/22 06:00
MHDA- 2013/03/05 06:00
CRDT- 2012/11/22 06:00
PHST- 2012/11/22 06:00 [entrez]
PHST- 2012/11/22 06:00 [pubmed]
PHST- 2013/03/05 06:00 [medline]
AID - 10.2166/wst.2012.552 [doi]
PST - ppublish
SO  - Water Sci Technol. 2013;67(2):340-6. doi: 10.2166/wst.2012.552.