Open AccessSeasonal bacterial community succession in four typical wastewater treatment plants: correlations between core microbes and process performance
Author(s) -
Bo Zhang,
Quanwei Yu,
Guozheng Yan,
Hubo Zhu,
Xiang yang Xu,
Liang Zhu
Publication year - 2018
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/s41598-018-22683-1
Subject(s) - ecological succession , process (computing) , core (optical fiber) , ecology , biology , environmental science , computer science , telecommunications , operating system
To understand the seasonal variation of the activated sludge (AS) bacterial community and identify core microbes in different wastewater processing systems, seasonal AS samples were taken from every biological treatment unit within 4 full-scale wastewater treatment plants. These plants adopted A2/O, A/O and oxidation ditch processes and were active in the treatment of different types and sources of wastewater, some domestic and others industrial. The bacterial community composition was analyzed using high-throughput sequencing technology. The correlations among microbial community structure, dominant microbes and process performance were investigated. Seasonal variation had a stronger impact on the AS bacterial community than any variation within different wastewater treatment system. Facing seasonal variation, the bacterial community within the oxidation ditch process remained more stable those in either the A2/O or A/O processes. The core genera in domestic wastewater treatment systems were Nitrospira , Caldilineaceae , Pseudomonas and Lactococcus . The core genera in the textile dyeing and fine chemical industrial wastewater treatment systems were Nitrospira , Thauera and Thiobacillus .