PMID- 14630123
OWN - NLM
STAT- MEDLINE
DCOM- 20040422
LR  - 20121115
IS  - 0043-1354 (Print)
IS  - 0043-1354 (Linking)
VI  - 38
IP  - 1
DP  - 2004 Jan
TI  - Enhancement of 2,4-dichlorophenol degradation in conventional activated sludge 
      systems bioaugmented with mixed special culture.
PG  - 245-53
AB  - Efficient and reliable removal of recalcitrant compounds, which are present in 
      wastewater intermittently, is critically important to prevent toxicity discharge 
      and system upset, especially for those biotreatment systems with poor anti-shock 
      loading capacity such as conventional activated sludge (CAS) systems. In this 
      study, 2,4-dichlorophenol (2,4-DCP) was chosen as a model recalcitrant substance. 
      2,4-DCP degrading mixed culture was bioaugmented to a CAS system in terms of 
      enhancing 2,4-DCP removal and maintaining system stability under shock loading 
      conditions. The effects of bioaugmentation on the performance of CAS systems 
      after single inoculation were investigated under long-term continuous operation, 
      during which four times shock loading occurred. Results showed that the two 
      bioaugmented CAS systems, which were inoculated with 5% and 15% 2,4-DCP degrading 
      mixed culture, respectively, demonstrated and maintained stronger ability to 
      degrade 2,4-DCP than the non-supplemented control one during the first three 
      shock loading periods within the first month after the first inoculation. For the 
      fourth 2,4-DCP shock loading which occurred 100 days after inoculation, the 
      advantages demonstrated by the bioaugmented systems were greatly reduced compared 
      to those of the previous three runs. In addition, ribosomal intergenic spacer 
      analysis method was used to track the supplemented special culture and assay the 
      effect of bioaugmentation on the changes of microbial community structure.
FAU - Quan, Xiangchun
AU  - Quan X
AD  - State Key Joint Laboratory of Environment Simulation and Pollution Control, 
      Department of Environmental Science and Engineering, Beijing Normal University, 
      100875, Beijing, People's Republic of China. quanxiangchun@tsinghua.org.cn
FAU - Shi, Hanchang
AU  - Shi H
FAU - Liu, Hong
AU  - Liu H
FAU - Lv, Pingping
AU  - Lv P
FAU - Qian, Yi
AU  - Qian Y
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Water Res
JT  - Water research
JID - 0105072
RN  - 0 (Anthelmintics)
RN  - 0 (Chlorophenols)
RN  - 0 (Sewage)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Anthelmintics/*metabolism
MH  - Biodegradation, Environmental
MH  - Chlorophenols/*metabolism
MH  - *Models, Theoretical
MH  - Population Dynamics
MH  - Sewage/*chemistry/*microbiology
MH  - Waste Disposal, Fluid/*methods
MH  - Water Purification/*methods
EDAT- 2003/11/25 05:00
MHDA- 2004/04/23 05:00
CRDT- 2003/11/25 05:00
PHST- 2003/11/25 05:00 [pubmed]
PHST- 2004/04/23 05:00 [medline]
PHST- 2003/11/25 05:00 [entrez]
AID - S0043-1354(03)00503-7 [pii]
AID - 10.1016/j.watres.2003.09.003 [doi]
PST - ppublish
SO  - Water Res. 2004 Jan;38(1):245-53. doi: 10.1016/j.watres.2003.09.003.