Effects of Different Cations on the Flocculation and Sedimentation of Static Fine-Grained Sediments

Authors

  • Xiaomin Liu

    College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010018, China
    Collaborative Innovation Center for Integrated Management of Water Resources and Water Environment in the Inner Mongolia Reaches of the Yellow River, Hohhot, Inner Mongolia, 010018, China
  • Yaotian Yang

    Collaborative Innovation Center for Integrated Management of Water Resources and Water Environment in the Inner Mongolia Reaches of the Yellow River, Hohhot, Inner Mongolia, 010018, China

    Inner Mongolia JinHua Yuan Environmental Resource Engineering Consulting Co., Itd, Hohhot, Inner Mongolia, 010020, China
  • Rui Wang

    Wuhai Wuda District Agriculture of Animal Husbandry and Water Affairs Bureau, Wuhai, Inner Mongolia, 016000, China
  • Wenjuan Wang

    Collaborative Innovation Center for Integrated Management of Water Resources and Water Environment in the Inner Mongolia Reaches of the Yellow River, Hohhot, Inner Mongolia, 010018, China

    Inner Mongolia JinHua Yuan Environmental Resource Engineering Consulting Co., Itd, Hohhot, Inner Mongolia, 010020, China
  • Qiang Luo

    Yellow River Hai Bo-Wan Water Conservancy Project Development Center, Wuhai, Inner Mongolia, 016000, China

DOI:

https://doi.org/10.30564/jees.v5i2.5747
Received: 29 May 2023 | Revised: 15 July 2023 | Accepted: 19 July 2023 | Published Online: 9 August 2023

Abstract

Natural water bodies mostly contain cations, and the type and content of these cations are the main factors affecting the flocculation of fine-grained cohesive sediments and the floc sedimentation rate at the interface between clear and turbid water. From the microscopic aspect, this study examined the changing patterns of porosity and the fractal dimension of the flocs of fine-grained cohesive sediments. Sedimentation experiments under different sediment contents and electrolyte conditions were conducted, and microscopic images of the flocs were analysed using Image-Pro Plus (IPP) and MATLAB based on the fractal theory. From the macroscopic aspect, this study experimentally investigated the flocculation and sedimentation of fine-grained cohesive sediments and proposed a sedimentation rate equation by introducing an ion concentration-related parameter into an existing sedimentation rate equation (stagnation zone) based on the adsorption isotherm equation. The equation proposed in this study was validated with measured data. The calculated values were in good agreement with the measured values, with a relative error of 16%. The findings of this study provide a reference for further research on the flocculation and sedimentation of fine-grained cohesive sediments in different water bodies.

Keywords:

Flocs, Electrolyte, Fractal dimension, Porosity, Sedimentation rate

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How to Cite

Liu, X., Yang, Y., Wang, R., Wang, W., & Luo, Q. (2023). Effects of Different Cations on the Flocculation and Sedimentation of Static Fine-Grained Sediments. Journal of Environmental & Earth Sciences, 5(2), 1–14. https://doi.org/10.30564/jees.v5i2.5747

Issue

Vol. 5 , Iss. 2 (October 2023)

Article Type

Article

License

Copyright © 2023 Author(s)

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This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.

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