Seeing the Complete FOG Picture

摘要

FOG (fats, oils, and grease) is a major component of discharges from certain food service establishments. Homes and large food-processing facilities can also be significant contributors of FOG, the leading cause of public sewer system blockages and treatment plant upsets. The resulting sewer backups, access-hole overflows, and wastewater spills in turn lead to contamination and damage to homes, businesses, and the environment. The US Environmental Protection Agency (USEPA) in a report to Congress (2004) stated that "grease from restaurants, homes and industrial sources are the most common cause (47%) of reported blockages." More recent data compiled by USEPA indicated that more than 65% of spills nationwide may be caused by FOG (USEPA, 2009). However, although the need to stop FOG from clogging sewers and treatment plants is certainly an important challenge for local governments and publicly owned treatment works (POTWs), it is just the first step in what should be a comprehensive, cradle-to-grave approach to handling FOG.