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WINDROW AND STATIC PILE COMPOSTING OF MUNICIPAL SEWAGE SLUDGES
Citation:
Iacoboni, M., J. Livingston, AND T. LeBrun. WINDROW AND STATIC PILE COMPOSTING OF MUNICIPAL SEWAGE SLUDGES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-84/122.
Description:
Research was conducted on composting anaerobically digested and centrifuge dewatered sewage sludge from 1975 through 1980. Windrow and static pile composting processes were evaluated; new methods were employed using deeper windrows and aerated static piles were constructed without using wood chips as a bulking agent. Parameters considered included temperature elevation, microorganism inactivation, moisture and volatile solids content, windrow size and turning frequency, percent and type of bulking agents, and odor and dust control. The influence of the above parameters, and a comparison of windrow and static pile composting are discussed. Windrow composting achieved more consistent pathogen and parasite inactivations within a wide range of operating parameters than did the aerated static piles. A report on the fate of viruses during composting of sewage solids, a review of the problem, and results of field studies is included in the appendix.