Microbial community of municipal discharges in a sewage treatment plant

There are numerous microorganisms, especial pathogens, in the discharges. Those microorganisms are discharged into the river and sea through sewage outfalls, which results in possible health risks to coastal populations. And more attention should be paid to municipal discharges in developing countri...

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Bibliographic Details
Published inHuanjing kexue Vol. 35; no. 9; p. 3473
Main Authors Xu, Ai-ling, Ren, Jie, Song, Zhi-wen, Wu, Deng-deng, Xia, Yan
Format Journal Article
LanguageChinese
Published China 01.09.2014
Subjects
Bacteria - classification
Disinfection
Environmental Monitoring
Phylogeny
Polymerase Chain Reaction
RNA, Ribosomal, 16S - genetics
Sewage - microbiology
Waste Disposal, Fluid
Waste Water - microbiology
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Summary:There are numerous microorganisms, especial pathogens, in the discharges. Those microorganisms are discharged into the river and sea through sewage outfalls, which results in possible health risks to coastal populations. And more attention should be paid to municipal discharges in developing countries. This study investigated the microbial community in the discharges by constructing 16S rDNA clones library and using the PCR-RFLP technology. Phylogenetic analysis of bacteria in municipal discharges showed that there were 59 species, which were divided into 11 classes. Proteobacteria accounted for 85% of all the bacteria, of which β-Proteobacteria and γ- Proteobacteria were the dominant classes. Bacteria in the waste water treating process had important influence on microbial community in municipal discharges, therefore, municipal sewage plant should choose the process according to the characteristics and purifying capacity of the receiving water body. Legionella spp. accounted for approximately 10% , the Legio
ISSN:0250-3301
DOI:10.13227/j.hjkx.2014.09.032