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Stagnation Reduction in Drinking Water Storage Tanks Through Internal Piping

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Monday, October 1, 2018, 3 pm– 4 pm

This is a past event.

 

Environmental Engineering Graduate Seminar

 

Mohammad Alizadeh Fard, PhD Candidate, Environmental Engineering, Michigan Technological University

 

Abstract:


Poor mixing in storage tanks can cause stagnant zones that could pose negative public health effects. To eliminate stagnant zones in a cylindrical water storage tank, this study investigated the feasibility of a novel internal piping configuration consisting of a sprinkler-type inlet piping that distributed the incoming flow evenly across the water surface and a corresponding upside-down sprinkler draining configuration at the tank bottom. Various stagnation metrics, like the time for the water to be well-mixed and water particle velocity and direction, were employed. Next, we studied life cycle assessment (LCA) of three options available to solve water stagnation in storage tanks. Using a 20-year period of time as a baseline for the manufacture and operation of mixer, multiple inlets, and sprinkler systems. These options were compared using different life cycle assessment (LCA) tools. Finally, in continuation of our previous studies to address this problem using sprinklers as the inlet and outlet, Computational Fluid Dynamics (CFD) modeling was used to investigate more cases and come up with design suggestions. The CFD modeling results using a K-ϵ model were verified with experimental results.


Speaker Bio:

Mohammad Alizadeh Fard got his M.S in Environmental Engineering from University of Tehran, Iran. He moved to the U.S. in the fall of 2014 to persue his PhD in Environmental Engineering at Michigan Tech. During his time at Michigan Tech he has been involved in many research projects and has been a GTA for Water Resources Engineering lab since fall 2017. His research focuses on optimization of storage tanks and novel technologies for water and wastewater treatment.  

 

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  • Angela Keranen

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