The Michigan Engineer News Center

Professor Daigger moderates discussion on water industry challenges

On the evening before WEFTEC (the Water Environment Federation’s Annual Technical Exhibition and Conference), Professor Glen Daigger moderated a discussion between five of the top utility professionals in North America.| Short Read

The event featured the following industry experts:

  • David St. Pierre, executive director, Metropolitan Water Reclamation District of Greater Chicago (MWRD)
  • Kerrie Romanow, director, Environmental Services Department, City of San Jose
  • Tom Kula, executive director, North Texas Municipal Water District (NTMWD)
  • George Hawkins, CEO and general manager, DC Water
  • Lou Di Gironimo, general manager, Toronto Water

Daigger posed five questions, each representing a pressing and common utility challenge as determined by an Ovivo poll. The questions included:

  • As agencies take more aggressive positions on effluent limits, do you believe regulations are going too far for nitrogen and phosphorus?
  • How will utilities address PPCPs (pharmaceuticals and personal care products), particularly difficult-to-treat microbeads?

To read more of the questions and answers, please visit

To watch a video on the discussion on reuse, and see links to the other discussions, please visit YouTube or click the box below.

The electrons absorb laser light and set up “momentum combs” (the hills) spanning the energy valleys within the material (the red line). When the electrons have an energy allowed by the quantum mechanical structure of the material—and also touch the edge of the valley—they emit light. This is why some teeth of the combs are bright and some are dark. By measuring the emitted light and precisely locating its source, the research mapped out the energy valleys in a 2D crystal of tungsten diselenide. Credit: Markus Borsch, Quantum Science Theory Lab, University of Michigan.

Mapping quantum structures with light to unlock their capabilities

Rather than installing new “2D” semiconductors in devices to see what they can do, this new method puts them through their paces with lasers and light detectors. | Medium Read