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Field Research on Mixing Aeration in a Drinking Water Reservoir: Performance and Microbial Community Structure

Author

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  • Zizhen Zhou

    (School of energy and environment, Zhongyuan University of Technology, Zhengzhou 450007, China
    These authors contributed equally to this work.)

  • Tinlin Huang

    (School of environmental and municipal engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
    Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi’an University of Architecture and Technology, Xi’an 710055, China
    These authors contributed equally to this work.)

  • Weijin Gong

    (School of energy and environment, Zhongyuan University of Technology, Zhengzhou 450007, China)

  • Yang Li

    (School of energy and environment, Zhongyuan University of Technology, Zhengzhou 450007, China)

  • Yue Liu

    (School of energy and environment, Zhongyuan University of Technology, Zhengzhou 450007, China)

  • Shilei Zhou

    (School of environment science and engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China)

Abstract

Field research on the performance of pollutant removal and the structure of the microbial community was carried out on a drinking water reservoir. After one month of operation of a water-lifting aeration system, the water temperature difference between the bottom and the surface decreased from 9.9 to 3.1 °C, and the concentration of the dissolved oxygen (DO) in the bottom layer increased from 0 to 4.2 mg/L. The existing stratification in the reservoir was successfully eliminated. Total nitrogen (TN), total phosphorus (TP), and total organic carbon (TOC) concentrations were reduced by 47.8%, 66.7%, and 22.9%, respectively. High-throughput sequencing showed that Proteobacteria , Bacteroides, and Actinomycetes accounted for 67.52% to 78.74% of the total bacterial population. Differences in the bacterial changes were observed between the enhanced area and the control area. With the operation of the water-lifting aeration system, the populations of bacteria of the main genera varied temporally and spatially. Principal component analysis pointed out a clear evolution in the vertical distribution of the microbial structure controlled by the operation of the aeration system. Permutational analysis of variance showed a significant difference in the microbial community ( p < 0.01). Redundancy analysis showed that physical (water temperature, DO) and chemical environmental factors (Chl-a, TOC, TN) were the key factors affecting the changes in the microbial communities in the reservoir water. In addition, a hierarchical partitioning analysis indicated that T, Chl-a, ORP, TOC, pH, and DO accounted for 24.1%, 8.7%, 6.7%, 6.2%, 5.8%, and 5.1% of such changes, respectively. These results are consistent with the ABT (aggregated boosted tree) analysis for the variations in the functional bacterial community, and provide a theoretical basis for the development and application of biotechnology.

Suggested Citation

  • Zizhen Zhou & Tinlin Huang & Weijin Gong & Yang Li & Yue Liu & Shilei Zhou, 2019. "Field Research on Mixing Aeration in a Drinking Water Reservoir: Performance and Microbial Community Structure," IJERPH, MDPI, vol. 16(21), pages 1-17, October.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:21:p:4221-:d:281948
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    Cited by:

    1. Miaomiao Yan & Shengnan Chen & Tinglin Huang & Baoqin Li & Nan Li & Kaiwen Liu & Rongrong Zong & Yutian Miao & Xin Huang, 2020. "Community Compositions of Phytoplankton and Eukaryotes during the Mixing Periods of a Drinking Water Reservoir: Dynamics and Interactions," IJERPH, MDPI, vol. 17(4), pages 1-28, February.

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