Abstract
Abstract Column experiments were conducted to examine the clogging effects of colloids under controlled conditions of solution ionic strength (IS) and porous media roughness. The results showed that colloids in recharge water play an important role in the clogging process of saturated porous media, such that even a small amount of colloid may cause a large reduction in the permeability of the porous medium. Clogging at the pore throat was inferred to be the main reason for the severe permeability reduction of porous media. The characteristics of colloid clogging were clearly influenced by both IS and medium roughness. Recharge water with a higher IS facilitated greater attachment of colloids to the surface of the saturated porous medium, which lead to superficial clogging, while collectors with a rough surface resulted in greater clogging than collectors with a smooth surface.
Highlights
An important issue for any managed aquifer recharge (MAR) system is the decline of permeability, typically called clogging (Dillon et al )
Most research on physical clogging mechanisms has focused on large particles (Rinckpfeiffer et al ; Rehg et al ; Ye et al ), with clogging that arises from a colloidal suspension in the MAR process having been much less studied
A fast reduction in permeability occurred within 10 min for experiment Ec3, Figure 3 | Breakthrough curves of colloidal suspension at different ionic strengths
Summary
An important issue for any managed aquifer recharge (MAR) system is the decline of permeability, typically called clogging (Dillon et al ). Physical clogging is the most common, affecting 70% of MAR cases (Dillon et al ). Suspended particles include colloids (diameter:
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
