Are fiberglass or stainless steel impeller blades better for a wastewater treatment plant’s mixers? At one of the world’s largest research parks, there is no shortage of expertise for weighing whether one material is better than another.With more than 200 companies and some 50,000 people skilled in fields such as microelectronics, telecommunications, biotechnology, chemicals, pharmaceuticals and environmental services, Research Triangle Park in Durham County, North Carolina, is a place to find answers to all sorts of technical questions.At the nearby Triangle Wastewater Treatment Plant, operators’ experience made a case for mixers with stainless steel impellers. As a result, the plant
