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Full-Text Articles in Engineering
Quantifying Surface Water And Groundwater Interactions In A High-Gradient Mountain Stream For Solute Transport, Noah M. Schmadel
Quantifying Surface Water And Groundwater Interactions In A High-Gradient Mountain Stream For Solute Transport, Noah M. Schmadel
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A study reach in a mountain stream highly influenced by groundwater was selected to test common data collection strategies used to characterize and quantify groundwater exchange processes necessary to predict solute transport. The data types collected include: high frequency discharge estimates with the use of rating curves, dilution gauging techniques with instantaneous tracer experiments, groundwater table and stream water surface elevations, vertical head gradients, and hydraulic conductivity estimates. The first two data types were categorized as stream gauging and the remaining three data types as site characterization. The stream gauging data were used to quantify net changes in stream discharge …
Removal And Utilization Of Wastewater Nutrients For Algae Biomass And Biofuels, Erick W. Griffiths
Removal And Utilization Of Wastewater Nutrients For Algae Biomass And Biofuels, Erick W. Griffiths
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Logan City Environmental Department operates a facility that consists of 460 acres of fairly shallow lagoons (~ 5'deep) for biological wastewater treatment that meets targets for primary and secondary treatments (solids, biological oxygen demand (BOD), and pathogen removal). Significant natural algal growth occurs in these lagoons, which improves BOD removal through oxygenation and also facilitates N removal through volatilization as ammonia under high pH conditions created by algal growth. Phosphorus, however, is non-volatile and stays in the water and likely cycles in and out of algal cells as they grow and die in the lagoons. In the near future, …