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      


Where's the Capacity? How to Stretch Capital Dollars by Retrieving Valuable Hidden Plant Capacity
Author: Henryk Melcer, Richard T. Kelly, Adam Klein, John R. Bratby, Don Esping, Jose A. Jimenez, Denny S. Parker, and Eric J. Wahlberg
Date: 5/212
WE&T, Vol. 24, No. 5, May 2012, pp. 53-57

In today’s economy, it is common for wastewater treatment plant administrators to seek funding. Repairs, equipment replacement, and upgrades or expansion to meet increasing flows and loadings or to meet more stringent regulatory requirements all require investment. Unlocking hidden capacity can provide some relief to the question of how much funding is needed and when. To help find this capacity, a group of engineers developed a tool that administrators and operators alike can use to evaluate a plant’s capability to treat higher flows and loadings. This tool also provides a guide to future capital investments that will maximize a plant’s treatment potential and its flexibility to accommodate increasingly stringent regulatory demands. Assessing plant capacity is nothing new. Some methods focus on desktop analyses based on rules of thumb, engineers’ and operators’ experience, and vendors’ recommended limits of performance. Others use design standards that were established more than 40 years ago. These traditional methods provide static assessments — that is, they evaluate a plant’s ability to treat a particular design flow and loading or satisfy particular effluent performance criteria at a particular point in time. Dynamic modeling tools, on the other hand, have moved capacity assessment to a time-based analysis in which plant capacity is related to changing flows and loads, changing effluent performance criteria, and aging equipment. With the improved accuracy that can be achieved, a dynamic approach offers greater savings potential.

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.