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Emissions Reduction from Digester Gas IC Engines at WWTPs using a Catalytic Oxidizer System

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Abstract:

Annual emissions calculated using source testing data and operational information determined that the internal combustion engines (IC Engines) at the Orange County Sanitation District (OCSD) wastewater treatment plants (WWTPs) are the largest sources of criteria pollutants and air toxics (mostly formaldehyde) emissions from the two facilities. In addition, the emissions of carbon dioxide (CO2), a greenhouse gas, from the IC Engines were larger than all other onsite direct and indirect sources combined. Therefore, the greatest reduction of criteria pollutants, air toxics, and greenhouse gases from the OCSD WWTPs can be achieved by the reducing emissions from the IC Engines.

This paper includes information related to the determination of methods and means for achieving this goal and the detailed description of the pilot study of the catalytic oxidizer system as one of the most promising technologies for controlling emissions.

Keywords: Emissions; air toxics; digester gas; emissions controls; greenhouse gases; internal combustion engines; renewable fuel; wastewater treatment plant

Document Type: Research Article

DOI: https://doi.org/10.2175/193864709793951892

Publication date: 2009-01-01

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