Understanding clogging mechanisms in filter media: An integration of laboratory findings and theoretical perspectives

Abstract

This paper examines the intricate dynamics of clogging mechanisms in high infiltration rate filter media. Filtration, a fundamental process for removing solid particles from liquids and gases, plays a crucial role in industries such as petroleum and water treatment. Clogging, which significantly affects hydraulic performance, involves the physical blockage of media pores by suspended matter, often necessitating the periodic regeneration of filters. Through laboratory experiments, this study reviews and conceptualizes how suspended particles influence clogging in filters. The results reveal that filtration pressure has minimal influence on the initial spurt loss, where particle size, pore size, and feed density are the dominant factors. Numerical simulations, corroborated by experimental observations, show that pores smaller than the mean particle size in the fluid clog immediately, while larger pores clog progressively. This research contributes to a deeper understanding of predictive models for permeability variations and offers a refined view of clogging processes, aiming to enhance the design and effectiveness of filtration systems.