yujia zhai (UT)
Supervisors: Walter van der Meer (UT/Oasen), Gang Liu (Key Laboratory of Drinking Water Science and Technology)
Postdoc project
Duration: 1-10-2019 to 1-10-2020
Funded by Oasen
Organic micropollutants (OMPs) are increasingly being detected in Dutch surface waters. Since river bank filtration (RBF) was used for the removal of pathogens, bacteria, natural organic matter (NOM), etc., interest has risen in the capability of RBF to provide an effective barrier for OMPs. This work aims to investigate the main drivers and mechanisms for organic micro pollutant (OMPs) removal during river bank filtration (RBF) from both field sampling and lab-scale column designing. Field work of water sampling from river and pumping wells is proposed to qualify and quantify the MOPs in realistic environment. After RBF, a combination of additional treatments including reverse osmosis membrane (RO) and metal-organic frameworks (MOFs) are proposed to improve the removal efficiency of OMPs. Laboratory column study is further designed based on the data from field monitory, to investigate the mechanisms (sorption and / or biodegradation) for OMPs removal. Moreover, the impact of redox potential is also studied to investigate the soil microbial activities in OMPs biodegradation. Molecular microbiology techniques including high-throughput sequencing, microbial functional analysis, antibiotic resistant genes analysis are used to better understand the soil microbial community abundance, composition, structure ,functioning, adaptation and evolutional process in biodegrading OMPs in RBF system.
Publications
Y. Zhai, G. Liu, W.G.J. van der Meer, One-Step Reverse Osmosis Based on Riverbank Filtration for Future Drinking Water Purification, Engineering, 2022, in press, https://doi.org/10.1016/j.eng.2021.02.015