Brown and Caldwell Home Page
Technical Papers RECENT PAPERS    ALL PAPERS      LOG IN

Brown and Caldwell engineers and scientists are technical and thought leaders in the environmental sector. Meet the people who have been advancing innovation for more than 70 years.
Author      Title/Abstract      

Solids System Stress Testing and Process Optimization
Author: Adam Klein, Dean Smith, and Henryk Melcer
Date: 10/08
Preprint WEFTEC ’08, Chicago, IL, October 18-22, 2008

The paper outlines the lessons learned from a series of stress testing and optimization studies performed at several municipal wastewater treatment plants in the Pacific Northwest. Installations tested included gravity belt and dissolved air flotation thickeners, and belt filter presses. In some cases, significant gains in rated capacity were achieved through stress testing, while process optimization addressed such variables as polymer dose, feed composition, flight operation, and belt speed, tension, and material. This paper outlines a general approach to solids systems stress testing, with details from each case study and discussion of test results.