Ming Zhi Wu

Numerical modeling of groundwater-lake interactions on fate of nutrients and bacteria at beaches of the Great Lakes

The goal of the Great Lakes Beaches project is to develop a fundamental understanding and assess the impact of groundwater-lake interactions on the fate of nutrients and bacteria at beaches of the Great Lakes. My role is to conduct the numerical (reactive transport) modeling component of the project, based on data from intensive field studies on Great Lake beaches and laboratory investigations conducted by RESTORE students. Fluctuations in lake water levels (e.g. waves, seasonal variations) result in dynamic groundwater flow and water exchange regimes, and complex interactions with nutrient transformations and microbial processes. I will use computational variably-saturated, reactive transport models that couple the dynamic groundwater flow with the subsurface nutrient and bacteria transport near the sediment-water interface. The modeling will evaluate the key factors controlling the contribution of groundwater to nutrient and fecal pollution for different freshwater beach conditions, providing a scientific basis for policy and water quality management strategies.

Personal Background

Ming joined the RESTORE group as a postdoctoral fellow in October 2014, and has experience in the development and application of variably-saturated subsurface models. He completed his BE (2004) and PhD (2012) in environmental engineering at the University of Western Australia (UWA). His PhD focused on investigating, using numerical modeling, the use of electrokinetic in situ chemical oxidation in remediating contaminated low permeability aquifers (i.e., the transport of permanganate within clay using electric currents). In Ming’s postdoctoral research at UWA (2012-2014), he developed a modified version of the MODFLOW/MT3DMS-based reactive transport model PHT3D to incorporate reactive solute and gas transport simulation capabilities under variably saturated conditions. Ming also has experience in industry as a groundwater engineer (modeling) at Golder Associates, Australia (2004-2007).

Publications

ResearcherID link

Wu, M.Z., Post, V., Salmon, S.U., Morway, E.D., Prommer, H. ‘PHT3D-UZF: MODFLOW/MT3DMS-based reactive transport modelling in variably saturated porous media,’ Ground Water, vol. 54, no. 1, pp 23-34.

Wu, M.Z., Reynolds, D.A., Fourie, A., Thomas, D.G. 2013. ‘Optimal field approaches for electrokinetic in situ chemical oxidation remediation,’ Ground Water Monitoring and Remediation, vol. 33, no. 1, pp 62-74.

Wu, M.Z., Reynolds, D.A., Fourie, A., Prommer, H., Thomas, D.G. 2012. ‘Electrokinetic in situ chemical oxidation remediation: Assessment of parameter sensitivities and the influence of aquifer heterogeneity on remediation efficiency,’ Journal of Contaminant Hydrology, vol. 136-137, pp 72-85.

Wu, M.Z., Reynolds, D.A., Prommer, H., Fourie, A., Thomas, D.G. 2012. ‘Numerical evaluation of voltage gradient constraints on electrokinetic injection of amendments,’ Advances in Water Resources, vol. 38, pp 60-69.

Select Conferences

Wu, M.Z., O’Carroll, D., Vogel, L., Robinson, C. 2015. ‘Factors influencing the accumulation and subsurface transport of fecal indicator bacteria near the shoreline at freshwater beaches,’ Abstract H21G-1479 presented at 2015 Fall Meeting, American Geophysical Union (AGU), San Francisco, Poster presentation.

Wu, M.Z.,O’Carroll, D., Vogel, L., Robinson, C. 2015. ‘Factors influencing the accumulation and transport of E. coli near the shoreline at freshwater beaches,’ presented at IAH-CNC 2015 Waterloo (Canadian Conference), International Association of Hydrogeologists (Canadian National Chapter), Waterloo, Ontario, Oral presentation.

Wu, M.Z., Post, V., Salmon, S.U., Morway, E., Prommer, H., 2014. ‘PHT3D-UZF: A new numerical model to simulate reactive transport processes in acid sulfate environments,’ presented at the 4 Sulfate Soil Conference, Southern Cross Geoscience, Perth, Oral presentation.

Wu, M.Z., Salmon, S.U., Prommer, H., Park, J., Post, V. 2013. ‘PHT3D-UZF: Modelling of multicomponent gas and solute transport and geochemical reactions in the unsaturated zone,’ in IAH 2013: Solving the Groundwater Challenges of the 21st Association of Hydrogeologists (IAH), Perth, Oral presentation.

Wu, M.Z., Prommer, H., Post, V., Morway, E. 2013. ‘PHT3D-UZF: MODFLOW/MT3DMS-based reactive transport modelling in variably saturated porous media,’ in MODFLOW and More 2013: Translating Science into Practice, Proceedings of the Integrated Ground Water Modelling Centre Conference, Colorado School of Mines, Golden CO, Oral presentation.

Wu, M.Z., Reynolds, D.A., Fourie, A., Prommer, H., Thomas, D.G. 2011. ‘Implementation of Electrokinetic-ISCO remediation,’ Abstract H41A-1017 presented at 2011 Fall Meeting, American Geophysical Union (AGU), San Francisco, Poster presentation.

Wu, M.Z., Reynolds, D.A., Prommer, H., Fourie, A., Thomas, D.G., Robertson, T., Hodges, D. 2010. ‘A coupled Electrokinetic transport and geochemical reaction model’ in Scientific Advances and Innovative Applications in Electrokinetic Remediation, proceedings of the 9th Remediation (EREM 2010), ed. Yang, G.C.C., National Sun Yat-SenUniversity, Taiwan, pp 67-68, Oral presentation.