Brown and Caldwell Home Page

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      

The TF/SC Process at Eight Years Old: Past, Present and Future
Author: Denny S. Parker
Date: 4/287
Presented at the 59th Annual Conference of the California Water Pollution Control Association, April 23, 1987

The decade of the seventies in the United States witnessed the emergence of advanced wastewater treatment (AWT) oriented to nutrient removal and polishing steps for enhanced removal of BOD5 and suspended solids. The decade of the eighties has brought a resurgent interest in reducing costs and energy usage in all forms of wastewater treatment. This paper concentrates on a relatively new secondary treatment process that typifies the interest in reduced costs, the trickling filter/solids contact (TF/SC) process. Initially developed in 1979, the TF/SC process has proven to be lower in capital, operating, and maintenance costs than either activated sludge, rotating biological contractors, or coupled trickling filter/activated sludge processes.1,2 The FT/SC process is capable of meeting a spectrum of design objectives from a monthly average of BOD5 and suspended solids (SS) of 10-10 to higher values in the 45-45 range.

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.