THERMAL SCIENCE

International Scientific Journal

Xin Zhang

,

Zeming Fu

,

Tianyu Zhou

,

Jinjiang Liu

,

Min Yang

,

Xingxin Nie

,

Huagen Wu

,

Ping Cheng

,

Tong Guo

,

Xiaoxin Luo

STUDY OF THE WATER CLEANING PROCESS BY USING CFD-DEM METHOD: A CASE STUDY OF COARSE FILTER MATERIAL

ABSTRACT
In this paper, the CFD-DEM coupling method was utilized to study the water cleaning and regeneration process of fibrous filter material. The effects of cleaning flow rate, time and adhesion force on the particle removal process were simulated. The results showed that the particle removal rate had a diminishing marginal effect with the increasing of cleaning flow rate. More than 80% of the particles were removed in the initial period, and then tended to stabilize. The higher the flow rate, the shorter the time needed to achieve stability. For G4 filter material, the function between the particle removal rate and the cleaning flow rate and time was given, and the best cleaning flow rate was 1.2 m/s while the cleaning time was 30 seconds. The surface energy of the fibers plays a dominant role in the cleaning process, and the reduction 1/4 of the surface energy of the particles can effectively improve the cleaning and regeneration performance.
KEYWORDS
Fibrous filter, water cleaning, regeneration, CFD-DEM, fine particles
PAPER SUBMITTED: 2023-02-06
PAPER REVISED: 2023-03-05
PAPER ACCEPTED: 2023-03-07
PUBLISHED ONLINE: 2023-04-22
DOI REFERENCE: https://doi.org/10.2298/TSCI230206088Z
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 1, PAGES [65 - 75]
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Study of the water cleaning process by using CFD-DEM method: A case study of coarse filter material

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence