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The study of the separation and deposition of dredging soil slurry under physical disturbance

Most existing research uses experimental designs for testing, which cannot efficiently analyse the migration and sorting rules of particles in the disturbed slurry. Therefore, based on the fluidized bed flow film theory, a slurry flow film structure system is established according to the disturbance...

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Autor principal: Yuan, Yan-zhao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9997989/
https://www.ncbi.nlm.nih.gov/pubmed/36893184
http://dx.doi.org/10.1371/journal.pone.0281708
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author Yuan, Yan-zhao
author_facet Yuan, Yan-zhao
author_sort Yuan, Yan-zhao
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description Most existing research uses experimental designs for testing, which cannot efficiently analyse the migration and sorting rules of particles in the disturbed slurry. Therefore, based on the fluidized bed flow film theory, a slurry flow film structure system is established according to the disturbance state of the fluid. On this basis, the particle size and distribution law of the disturbing force formed by slurry disturbance are analyzed, and the calculation model of single particle lift in the flowing film is also analyzed. On this basis, using Markov probability model, the probability of particle lifting and sorting between layers is theoretically deduced. Then, according to the particle ratio of the original mud, the settlement gradation of the particles in the disturbance is analyzed. It can also predict the separation degree of particle in natural turbulence, fluidized beds, and sludge mechanical dewatering. Finally, according to the particle flow software PFC (Particle Flow Code), the main influencing parameters (disturbing force and gradation) were verified and analyzed. The results show that the particle flow simulation results are in good agreement with the calculation results. The model of slurry membrane separation proposed in this paper can provide a basis for studying the mechanism of slurry disturbance separation and particle deposition.
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spelling pubmed-99979892023-03-10 The study of the separation and deposition of dredging soil slurry under physical disturbance Yuan, Yan-zhao PLoS One Research Article Most existing research uses experimental designs for testing, which cannot efficiently analyse the migration and sorting rules of particles in the disturbed slurry. Therefore, based on the fluidized bed flow film theory, a slurry flow film structure system is established according to the disturbance state of the fluid. On this basis, the particle size and distribution law of the disturbing force formed by slurry disturbance are analyzed, and the calculation model of single particle lift in the flowing film is also analyzed. On this basis, using Markov probability model, the probability of particle lifting and sorting between layers is theoretically deduced. Then, according to the particle ratio of the original mud, the settlement gradation of the particles in the disturbance is analyzed. It can also predict the separation degree of particle in natural turbulence, fluidized beds, and sludge mechanical dewatering. Finally, according to the particle flow software PFC (Particle Flow Code), the main influencing parameters (disturbing force and gradation) were verified and analyzed. The results show that the particle flow simulation results are in good agreement with the calculation results. The model of slurry membrane separation proposed in this paper can provide a basis for studying the mechanism of slurry disturbance separation and particle deposition. Public Library of Science 2023-03-09 /pmc/articles/PMC9997989/ /pubmed/36893184 http://dx.doi.org/10.1371/journal.pone.0281708 Text en © 2023 Yan-zhao Yuan https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Yuan, Yan-zhao
The study of the separation and deposition of dredging soil slurry under physical disturbance
title The study of the separation and deposition of dredging soil slurry under physical disturbance
title_full The study of the separation and deposition of dredging soil slurry under physical disturbance
title_fullStr The study of the separation and deposition of dredging soil slurry under physical disturbance
title_full_unstemmed The study of the separation and deposition of dredging soil slurry under physical disturbance
title_short The study of the separation and deposition of dredging soil slurry under physical disturbance
title_sort study of the separation and deposition of dredging soil slurry under physical disturbance
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9997989/
https://www.ncbi.nlm.nih.gov/pubmed/36893184
http://dx.doi.org/10.1371/journal.pone.0281708
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