PMID- 24292461
OWN - NLM
STAT- MEDLINE
DCOM- 20140305
LR  - 20191210
IS  - 0273-1223 (Print)
IS  - 0273-1223 (Linking)
VI  - 68
IP  - 10
DP  - 2013
TI  - Start-up of a granular sludge sequencing batch reactor for the treatment of 
      2,4-dichlorophenol-contaminated wastewater.
PG  - 2151-7
LID - 10.2166/wst.2013.470 [doi]
AB  - In this study, a granular sludge sequencing batch reactor (GSBR) was started-up 
      for the biological aerobic treatment of wastewater containing highly toxic 
      2,4-dichlorophenol (2,4-DCP), in presence of readily biodegradable sodium acetate 
      (NaAc) as the growth substrate. Different influent concentrations of NaAc 
      (420-800 mg/L) and 2,4-DCP (0-20 mg/L), as well as different operating conditions 
      (i.e. cycle length), were tested in order to determine the optimal strategy for 
      successful GSBR start-up: stable granulation and complete 2,4-DCP removal were 
      achieved only when high NaAc influent concentration and volumetric organic 
      loading rates (800 mg/L and 1.9 kgCOD/(m(3).d), respectively), prolonged reaction 
      phase (cycle time of 4 hours) and gradual increase of 2,4-DCP concentration in 
      the influent were applied, thus providing useful information for process 
      optimization in view of future scale-up. Granules were initially colonized by 
      fungi which progressively disappeared during the start-up process, and complete 
      2,4-DCP removal was mostly due to bacterial activity, in particular 
      Betaproteobacteria, as shown by fluorescence in situ hybridization (FISH).
FAU - Milia, S
AU  - Milia S
AD  - Institute of Environmental Geology and Geoengineering (IGAG-CNR), Piazza d'Armi, 
      09123 Cagliari, Italy E-mail: smilia@unica.it.
FAU - Porcu, R
AU  - Porcu R
FAU - Rossetti, S
AU  - Rossetti S
FAU - Carucci, A
AU  - Carucci A
LA  - eng
PT  - Evaluation Study
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 (Chlorophenols)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Bacteria/*metabolism
MH  - *Bioreactors
MH  - Chlorophenols/*metabolism
MH  - Water Purification/*instrumentation
EDAT- 2013/12/03 06:00
MHDA- 2014/03/07 06:00
CRDT- 2013/12/03 06:00
PHST- 2013/12/03 06:00 [entrez]
PHST- 2013/12/03 06:00 [pubmed]
PHST- 2014/03/07 06:00 [medline]
AID - 10.2166/wst.2013.470 [doi]
PST - ppublish
SO  - Water Sci Technol. 2013;68(10):2151-7. doi: 10.2166/wst.2013.470.