Document Detail


Growth and Repair Potential of Three Species of Bacteria in Reclaimed Wastewater after UV Disinfection.
MedLine Citation:
PMID:  22108329     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
OBJECTIVE: The growth and repair potential of three typical microorganisms in reclaimed water after UV disinfection was investigated to assess the effects of photo-reactivation and dark repair of microorganisms, and the microbial safety of reclaimed water following this procedure.
METHODS: The growth and repair potential of Escherichia coli, a fecal coliform strain and Bacillus subtilis in the effluent of a biological wastewater treatment plant disinfected by a low-pressure UV lamp were investigated.
RESULTS: Any increase in bacterial numbers in the effluent after UV disinfection was due to damage repair. Exposure to photo-reactivating light for 8-10 h after UV irradiation with a dose of 5 mJ/cm(2), the highest percentage of photo-reactivation observed for E. coli and the fecal coliform strain was 29% and 15% respectively. B. subtilis showed little photo-reactivation under these conditions. The percentage of photo-reactivation was related to the UV dose and the photo-reactivating time, and a function was developed to forecast the final concentrations of E. coli and the fecal coliform strain after UV disinfection with possible photo-reactivation.
CONCLUSION: Different species of bacteria displayed different responses to UV light and different repair potentials. The repair of indigenous bacteria in wastewater needs to be investigated in future work.
Authors:
Meiting Guo; Jingjing Huang; Hongying Hu; Wenjun Liu
Related Documents :
15049089 - Isozyme analysis of taenia solium isolates from mexico and colombia.
24089099 - Molecular characterization of endophytes isolated from saccharum spp based on esterase ...
21882649 - Lytic bacteriophages specific to flavobacterium columnare rescue catfish, clarias batra...
22197499 - Immunosuppressive drug rapamycin restores sporulation competence in industrial yeasts.
22129149 - Biodegradation of nicotine by newly isolated pseduomonas sp. cs3 and its metabolites.
21565779 - Investigation of toxin content in cylindrospermopsis raciborski (wołoszyńska) seenaya a...
16436749 - In vitro activity of dx-619, a novel des-fluoro(6) quinolone, against a panel of strept...
3158809 - Further characterization of sos system induction in recbc mutants of escherichia coli.
18680939 - Antibacterial effects of long-chain polyphosphates on selected spoilage and pathogenic ...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biomedical and environmental sciences : BES     Volume:  24     ISSN:  0895-3988     ISO Abbreviation:  Biomed. Environ. Sci.     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-11-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8909524     Medline TA:  Biomed Environ Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  400-7     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 The Editorial Board of Biomedical and Environmental Sciences. Published by Elsevier B.V. All rights reserved.
Affiliation:
Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, China.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Troglitazone Induced Apoptosis via PPAR? Activated POX-induced ROS Formation in HT29 Cells.
Next Document:  Modulation of Behavior and Glutamate Receptor mRNA Expression in Rats after Sub-chronic Administrati...