Abstract
The geometric structure of the suspended carrier is an important factor that directly affects the effluent quality of the moving bed biofilm reactor, and it should be a valuable mathematical solution to solve the nonlinear equation through numerical simulation and experimental research. Therefore, this study has designed and prepared a coral-shaped fractal suspension carrier based on nonlinear equations and verified the effectiveness of the new carrier for sewage treatment through FLUENT numerical simulation and domestic sewage treatment experiments. The experimental results show that the coral-shaped fractal suspension carrier has a significant effect on the velocity, vortex distribution, and gas-phase distribution of the flow field in the reactor. The mass transfer dead area in the reactor is reduced, the number of vortices is significantly increased, and the fractal dimension of the carrier is negatively correlated with the flow velocity and pressure drop of the fluid. After stabilization, the average removal rates of COD and NH4+-N by the reactor are 89.5% and 93.21%, respectively; the effluent quality reaches the national first-class A standard; and the sewage treatment performance is good. At the same time, this research provides a preliminary research basis for the method of solving nonlinear equations through numerical simulation and experimental research.
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At the point of finishing this manuscript, the authors would like to express sincere thanks to all those who have lent their hands in the course of our writing this manuscript. At the same time, the authors would like to acknowledge other researchers for assisting in providing references and information during the conduct of this research and manuscript.
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BZ is the designer of the experiment and the executive of the experimental research in this study, completing data analysis and writing the first draft of the manuscript. YW, RW, DY, and ZZ are involved in the experimental design and analysis of experimental results. AW is the creator and the person in charge of the project, directing the experimental design, data analysis, paper writing, and revision. All authors read and approved the final manuscript.
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Zhao, B., Wu, Y., Wan, R. et al. Numerical simulation and experimental research of fractal suspended carrier based on nonlinear equation. Environ Sci Pollut Res 29, 66191–66203 (2022). https://doi.org/10.1007/s11356-022-20528-z
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DOI: https://doi.org/10.1007/s11356-022-20528-z