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      


There’s More to Chemical Precipitation for Phosphorus Removal than Meets the Eye
Author: Henryk Melcer, Phil Heck, Trevor Lindley, Adam N. Klein, Matt Winkler, Ben Watson
Date: 09/16
WEFTEC 2016, New Orleans, LA, Sep. 24-28, 2016

In response to Utah State’s introduction of nutrient removal regulations, the Central Valley Water Reclamation Facility initiated an evaluation of phosphorus removal technologies to determine the most cost effective method of adapting its TF/AS process to comply with the new regulations. Chemical phosphorus precipitation was compared with BNR activated sludge and combinations of chemical and biological treatment alternatives. On a net present value basis, it was determined that a phased conversion to a 5-stage Bardenpho technology was the most cost effective approach. The analysis was complicated by the low availability of influent readily degradable carbon. Measures to reduce the dependency on purchasing supplementary sources of carbon were investigated and incorporated into the final design.

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.