Residents of Milpitas, California, have long dealt with persistent odors from a nearby landfill. While conditions have improved, the smell still affects daily life. The landfill's operators are now using advanced technology, including drones and air monitors, to track and manage the issue. Chia-Ling Kong, a local engineer, hopes the data-driven approach will help identify and resolve odor problems more effectively. The landfill's operators emphasize their commitment to safe operations and air quality protection.
Communities worldwide face similar challenges with industrial odors, often linked to landfills, sewage plants, or factories. However, regulations on managing smells are inconsistent, with the U.S. Environmental Protection Agency not classifying odors as a pollutant. This leaves local governments to address the issue, often with limited resources. Urban expansion has brought more people closer to these facilities, increasing the need for effective odor control technologies.
Odor control methods vary, ranging from chemical absorption to burning off smells. Experts note that the most effective solutions can remove up to 90% of odor-causing compounds, but they are often costly. Some facilities opt for cheaper alternatives, like spraying deodorizers, which experts question for their effectiveness. Landfills, in particular, pose a challenge due to their vast surface area and the complexity of managing their emissions.
In Des Moines, Iowa, a similar approach has been successful. A study identified industrial meat companies as contributors to the infamous Eastside Funk. Authorities now use a network of odor monitors and weather stations to track and pinpoint the source of complaints. This system has reduced disputes over responsibility and allowed for targeted solutions. Companies like Smithfield Foods have invested in advanced odor control systems, though they maintain they are not the primary source of complaints. The shift from human olfactory testing to electronic monitoring represents a significant advancement in odor management.