If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email firstname.lastname@example.org
Major sources of emissions at a wastewater treatment plant are typically combustion sources (internal combustion engines, boilers, flares, emergency diesel generators and turbines). At the two wastewater treatment plants owned and operated by the Orange County Sanitation District (OCSD),
natural and digester gas-fired internal combustion (IC) engines are the major emitters of criteria pollutants (oxides of nitrogen (NOx), carbon monoxide (CO), volatile organic compounds (VOC's), and particulate matter (PM)) and air toxics. Toxic Air Contaminants (TAC), namely formaldehyde
and acrolein, emitted by the engines were found to be major contributors to health risk to neighborhood residents and businesses. Alternatives for reducing emissions from the gas-fired IC engines were identified and evaluated. Based on technical and economic feasibilities, three alternatives
to reduce the health risk levels at Plant 1 and Plant 2 for the spark-ignited IC engine were pilot tested: 1) Modification of turbocharger 2) Pre-combustion chamber (PCC) timing and air-to-fuel control optimization for pilot gas system; and 3) oxidative catalyst control with digester gas pretreatment. This
paper discusses the regulatory drivers for the IC engines, steps used to develop the air toxics emissions inventory from large IC engines at wastewater treatment plants and the corresponding health risk assessment. Different alternatives for emissions reduction are considered. Preliminary
results of the study of performance of post-combustion emission reduction system together with the catalyst-poisoning cleaning equipment (digester gas pretreatment) are also included.
Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.