PMID- 17990169
OWN - NLM
STAT- MEDLINE
DCOM- 20080205
LR  - 20160526
IS  - 1093-4529 (Print)
IS  - 1093-4529 (Linking)
VI  - 42
IP  - 13
DP  - 2007 Nov
TI  - Treatment of municipal wastewater with the sequence batch reactor under 
      uncoupling metabolic conditions.
PG  - 2059-64
AB  - The activated sludge process generates large quantities of excess sludge as 
      by-product, which is one of the most serious challenges in biological wastewater 
      treatment. In this study, the feasibility of 2,4,6-trichlorophenol (TCP) as 
      metabolic uncoupler to reduce sludge generation in the Sequence Batch Reactor 
      (SBR) for the long-term treatment of municipal wastewater was evaluated. The 
      results of 90 days continuous treatment showed that 2 mg/L TCP reduced sludge 
      generation by about 47%, while COD removal efficiency and sludge ability to 
      settle were only slightly decreased. The specific substrate removal rate of 
      sludge in the reactor with TCP exceeded the removal rate of sludge in the control 
      reactor, indicating that the catabolism and anabolism of sludge in the reactor 
      with TCP was uncoupled. Microscopic and 16s DNA analyses showed that the 
      microbial population of sludge varied when TCP was fed into the SBR. The 
      occurrence of filaments and the disappearance of some protozoa in the sludge 
      system might be reasons for the slight variation of sludge ability to settle 
      under uncoupled metabolic conditions.
FAU - Zheng, G H
AU  - Zheng GH
AD  - School of Environmental Science and Engineering, State Key Laboratory of 
      Pollution Control and Resource Reuse, Tongji University, Shanghai, China.
FAU - Chen, Z Y
AU  - Chen ZY
FAU - Wang, L
AU  - Wang L
FAU - Qian, Y F
AU  - Qian YF
FAU - Zhou, Q
AU  - Zhou Q
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - J Environ Sci Health A Tox Hazard Subst Environ Eng
JT  - Journal of environmental science and health. Part A, Toxic/hazardous substances & 
      environmental engineering
JID - 9812551
RN  - 0 (Chlorophenols)
RN  - 0 (RNA, Ribosomal, 16S)
RN  - 0 (Sewage)
RN  - 0 (Uncoupling Agents)
RN  - MHS8C5BAUZ (2,4,6-trichlorophenol)
SB  - IM
MH  - *Biomass
MH  - Chlorophenols/*pharmacology
MH  - RNA, Ribosomal, 16S/genetics
MH  - Sewage/*microbiology
MH  - Uncoupling Agents/*pharmacology
MH  - Water Purification/*methods
EDAT- 2007/11/09 09:00
MHDA- 2008/02/06 09:00
CRDT- 2007/11/09 09:00
PHST- 2007/11/09 09:00 [pubmed]
PHST- 2008/02/06 09:00 [medline]
PHST- 2007/11/09 09:00 [entrez]
AID - 783994123 [pii]
AID - 10.1080/10934520701631654 [doi]
PST - ppublish
SO  - J Environ Sci Health A Tox Hazard Subst Environ Eng. 2007 Nov;42(13):2059-64. 
      doi: 10.1080/10934520701631654.