Brown and Caldwell Home Page
Technical Papers RECENT PAPERS    ALL PAPERS

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      


Determine the Affect of Individual Wastewater Characteristices and Variances on Primary Clarifier Performance
Author: Eric J. Wahlberg, Chris Sheridan, Steve Koho
Date: 10/03
Presented at WEFTEC 2003 in Los Angelos, California.

The Water Environment Research Foundation sponsored a project to investigate the affect of various wastewater characteristics on primary clarifier performance and to quantify the variability of these characteristics. Eight public agencies participated in the study by collecting performance data around a designated test primary clarifier. Three of the agencies studied two test clarifiers. The data presented and analyzed here were collected at the Edmonds, Washington, Wastewater Treatment Plant. The paper describes a new paradigm for evaluating primary clarifier performance, which is confirmed using the Edmonds data. Edmonds tested two clarifier configurations: (1) a square tank with a circular sludge collection mechanism (a so called “squircle” configuration) and (2) a rectangular tank with two circular sludge collection mechanisms. The data collected are inconclusive in regards to which configuration performed better.

This library contains published materials for which copyrights may be owned by entities other than Brown and Caldwell, but which are stored for limited uses by BC employees. Technical papers authored by BC employees generally may be printed and shared electronically with clients and prospective clients outside BC. Technical papers cannot be sold, and technical papers shared outside BC must have proper attribution of the original sponsoring organization or conference where the paper was presented. This attribution is embedded in each technical paper file when it is loaded into this library. Published articles from magazines or trade journals which are stored in this library are FOR INTERNAL USE ONLY and SHOULD NOT be distributed to clients or others outside BC, without express permission of the copyright owner. For questions regarding copyrights associated with any document in this library, or questions regarding copyrights in general, contact the Legal Department.