Sally is conducting research to develop an aeration diffuser system which employs
a simple O-ring regulator to provide the oxygen necessary for effective activated
sludge or water treatment. Her experiments manipulate air pressure and airflow rate
to a disc diffuser which is immersed in a water tank. She uses regulators with varying
O-ring hardness and observes the resulting width of the bubble plume generated by
the diffuser. Sally's analysis characterizes vertical mixing of the water column based
on bubble plume geometry to determine the optimal airflow. Her results will be useful
in designing water treatment techniques that are both energy efficient and cost effective.
Sally received her bachelor's degree in environmental engineering from the University
of Tehran in 2007 and spent the next decade working for engineering consulting firms
in Iran in the fields of environmental planning, environmental assessment and natural
resource management. She says studying at Oklahoma State University is one of the
greatest experiences she has had during her academic career. Sally states, "Not only
did I learn new scientific principles and methodologies to understand and analyze
environmental problems, but also I met other students from around the world which
helped me strengthen my international mindset," and she thanks her advisor Dr. Scott
Stoodley "for his unwavering support and helpful advice" during her graduate program.