Seminar: Thursday Feb 21, 2008 3:30-4:30pm, 153 Mueller

Speaker: Dr. H. David Stensel, Professor of Civil Engineering,

University of Washington

Title: "Turning the Screws on Nutrient Removal: Challenges in Wastewater

Treatment Design"

Abstract:

Many surface waters in the United States are suffering from nutrient enrichment which has

encouraged high levels of algae and plant growth with subsequent negative effects on the

ecosystem. Point discharge sources from municipal wastewater treatment facilities have

been the traditional target for regulatory control of nutrients. In certain areas of the

country, the stringent discharge limits for nitrogen and phosphorus have presented

technical and economical challenges in wastewater treatment. These challenges and

efforts in wastewater treatment design, process developments and research will be described.

1967 BSCE Union College

1968 ME Cornell University

1971 PhD Cornell University

Research Interests:

Biological Nutrient Removal

Oxygen Transfer and Substrate Utilization in Fixed Film Systems

Bio-degradation of Toxic Pollutants

Biofilters for Toxic Gas Treatment

http://www.ce.washington.edu/people/faculty/bios/stensel_d.html