When it comes to dealing with odors at septage disposal facilities, biofilters are often the way to go.Biofilters are cost-effective and operators can build one themselves, says Tom Ferrero, a project manager at FRANC Environmental Inc. and frequent speaker at national workshops and conventions on septic systems and wastewater issues.Biofilters work by passing air through a medium that contains microbes. The microbes eat the odorous compounds, eliminating the odor from the air.The key to a successful biofilter is keeping the medium – usually woodchips – moist and making sure there are pathways for air to flow through.“It’s very high-tech, low-tech,”
