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      


Class A Biosolids Through Storage and Air Drying-Project Initiation
Author: Perry L. Schafer, Joseph B. Farrell
Date:
NULL

Municipal wastewater agencies are finding that it is increasingly desirable to provide high-quality biosolids products. Pathogen content often needs to meet, in essence, a pathogen-free standard (Class A requirements per the US Environmental Protection Agency's (EPA's) new 40 CFR Part 503 rules). Costs for the traditional Class A biosolids processes are relatively high, and, therefore, there is clearly a need for low-cost, innovative, and low-technology processes that will meet Class A pathogen control standards. Agencies with small wastewater facilities and limited budgets, in particular, have difficulty in funding the more costly Class A processes. The research work described here will help fill that need by defining the key factors that can be used to control biosolids storage and air drying systems so that Class A products are created.