The presence of micropollutants in treated greywater effluent has limited the use of household water recycling. To mitigate the risks posed by these contaminants and effectively reclaim water, advanced post-treatment techniques are necessary. One promising alternative is the implementation of hollow fiber nanofiltration, which has demonstrated effective removal of micropollutants.
This study assessed the influence of fouling on the efficacy of polyelectrolyte multilayer nanofiltration membranes through filtration experiments with model solutions and greywater effluent.
The hollow fiber membranes were primarily susceptible to biofouling, leading to permeability decline. Sodium alginate exhibited the most pronounced reduction in flux. Despite the decrease in permeability, the membranes maintained relatively consistent micropollutant retention, suggesting their potential suitability for greywater reclamation applications. Though further research on, for instance, ionic compositions is still relevant to reach its full potential.
Rutten, S. B., V. L. Levering, L. Hernández Leal, J. de Grooth, and H. D. W. Roesink. 2023. “Retention of Micropollutants by Polyelectrolyte Multilayer Based Hollow Fiber Nanofiltration Membranes under Fouled Conditions.” Journal of Water Process Engineering 53 (103760): 103760. https://doi.org/10.1016/j.jwpe.2023.103760