The System Assessment
Black & Veatch Specifications from Diffusers to Blowers - Part 1: The Demand Side – Diffusers and DO Control
Blower & Vacuum Best Practices Magazine interviewed Julia Gass, P.E and Patrick Dunlap, P.E. at the Black & Veatch offices in Kansas City during the summer of 2016. Ms. Gass is responsible for aeration blower specifications while Mr. Dunlap is a wastewater process engineer. We held a general discussion covering technologies impacting aeration blowers in wastewater treatment plants.
Bird Island Wastewater Treatment Plant (WWTP) in Buffalo, N.Y., had an inefﬁcient aeration control system that, ironically, had been installed in 1998 as an efﬁciency upgrade. The operating principle was that air ﬂow to all 32 of the plant’s aeration basins, or zones, would be properly controlled by an average of several Dissolved Oxygen (DO) level measurements taken by DO probes in a few of the basins. However, changes in tank loadings and physical dynamics, along with differences in oxygen transfer rates between diffuser grids, prevented a uniform air ﬂow in the aeration zones.
AISTech 2016, steel's premier annual technology event, returned to Pittsburgh May 16-19 at the David L. Lawrence Convention Center. For the first time ever the exposition spanned two levels of the convention center making it the largest yet with a total of 542 exhibiting companies. The total attendance of 7,764 was the third highest in AISTech history.