Microbial community assembly in detergent wastewater treatment bioreactors: Influent rather than inoculum source plays a more important role

Yangwu Chen; Chen Wang; Shiyang Dong; Lian Jiang; Yan Shi; Xudong Li; Wantong Zou; Zhouliang Tan

doi:10.1016/j.biortech.2019.121467

Microbial community assembly in detergent wastewater treatment bioreactors: Influent rather than inoculum source plays a more important role

Bioresour Technol. 2019 Sep:287:121467. doi: 10.1016/j.biortech.2019.121467. Epub 2019 May 15.

Authors

Yangwu Chen¹, Chen Wang¹, Shiyang Dong², Lian Jiang², Yan Shi², Xudong Li², Wantong Zou³, Zhouliang Tan⁴

Affiliations

¹ Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041 Chengdu, PR China; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041 Chengdu, PR China; University of Chinese Academy of Sciences, 100049 Beijing, PR China.
² Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041 Chengdu, PR China; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041 Chengdu, PR China.
³ Chengdu No. 20 Middle School, Chengdu 610036, PR China.
⁴ Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041 Chengdu, PR China; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041 Chengdu, PR China. Electronic address: tanzhl@cib.ac.cn.

PMID: 31121447
DOI: 10.1016/j.biortech.2019.121467

Abstract

In this study, three sequencing batch reactors Ra, Rb, Rc with different inoculum sources (activated sludge; activated sludge plus detergent degrading consortium; detergent degrading consortium) were used to treat detergent wastewater [consisting of sodium dodecyl sulfate, polyoxyethylene lauryl ether and tetrasodium ethylenediamine tetraacetate (Na₄EDTA)]. Fast start-up and highest performance in phase I and II (organic loading rate were 0.28, 0.39 kgCOD/kgMLSS/d, respectively) were observed in Rc. In contrast, Rb showed highest impact resistance to the increase of EDTA concentration in phase III. High-throughput sequencing analysis showed that inoculum sources led to significant differences on microbial community in phase I. However, regardless of the influent variation in phases II and III, the differences on microbial community among three SBRs were diminished along long-term operation. Pseudomonas, Sphingopyxis, Luteimonas, Pseudoxanthomonas and SM1A02 were found to be the core taxa, they might contribute to the excellent performance of detergent wastewater treatment.

Keywords: Detergent degrading consortium; Detergent wastewater; Influent variation; Inoculum source; Microbial community assembly.

MeSH terms

Bioreactors
Detergents
Microbiota*
Sewage
Waste Disposal, Fluid
Wastewater*

Substances

Detergents
Sewage
Waste Water