Iowa State University; Dept. of Chemical and Biological Engineering; clay rings for sewage treatment filters
Chemical Engineering Professor W.E. Galligan, Ralph H. Suebbers, (graduate student) and Dr. Max Levine (Bacteriology) examine clay rings (produced in Ceramic Engineering Laboratory) for sewage-treatment filters as part of a general station study).
Iowa State University; Dept. of Chemical and Biological Engineering
Two researchers are standing before a bubble cap column. The column is surrounded by metal scaffolding and stairs lead to the upper levels. One individual is standing on the highest level near the top of the column.
Iowa State University; Dept. of Chemical and Biological Engineering.
Three men are observing a plate-and-frame-filter press. A fourth individual is recording information on a clipboard. The press, which is used to make filtration tests was introduced to Iowa State University in 1953.