Accelerated testing for fouling of microfiltration membranes using model foulants

作者：Kim Yoon Jin; Yun Taekgeun; Lee Sangho^*; Kim Dohee; Kim Jongdeok

来源：Desalination, 2014, 343: 113-119.

DOI：10.1016/j.desal.2014.01.016

• Hollow fiber
• Fouling
• Microfiltration
• Mathematical models
• Accelerated testing
• Fouling rate

Hollow fiber microfiltration (MF) membranes have been widely employed for water and wastewater treatment Nevertheless, membrane fouling is still one of the most serious issues in operating hollow fiber membrane systems. In this research, fouling of hollow fiber MF membranes was evaluated by means of accelerated testing experiments. A single fiber filtration unit was used to perform the fouling experiments in an accelerated way. Permeate flux and foulant concentrations were used as fouling control parameters to adjust the rate of fouling. Four model foulants used were kaolin, silica, natural organic matters (NOM), and alginate. A simple theoretical model was applied to investigate the fouling characteristics of the membrane by the model foulants. The analysis showed that there was a nonlinear correlation between the fouling rate and the fouling control parameters. The "normalized" fouling rate, theta/J(2), was found to be useful to quantify the fouling rate and to implement a long-term simulation of TMP changes.

• 出版日期2014-6-16