US Cities Turn to Technology to Combat Persistent Odor Problems

In Milpitas, California, a city in the heart of Silicon Valley, residents have long endured unpleasant odors emanating from local industrial sites, including a large landfill. Chia-Ling Kong, an engineer, described living with the smell for over a decade, noting that even with recent improvements, her neighborhood still experiences several hours of bad smells daily.

Technological Solutions for Stench

In response to persistent complaints, operators of the Newby Island landfill have been instructed by authorities to employ drones and install monitors for systematic tracking and measurement of odor-causing chemicals. Automation of landfill gas collection, a primary source of these smells, is also being implemented. Kong expressed optimism that this data-driven approach will help pinpoint and resolve odor issues as they arise.

The United States, unlike some other nations, does not regulate environmental odors as a pollutant, leaving the responsibility to state and local governments. This regulatory landscape, coupled with urban sprawl that brings residential areas closer to industrial facilities, has increased the demand for technologies capable of monitoring and mitigating odors. Odor consultant Micheal Bull noted that increased development near industrial processes, driven by rising land values, exacerbates the problem globally.

Technologies for industrial odor control typically fall into three categories: absorption, chemical reaction to neutralize odors, or combustion. Experts suggest that advanced systems can achieve over 90% removal of odor-causing compounds. However, some operators opt for less expensive methods, such as spraying deodorizers, which experts like Bull view as ineffective, likening them to fabric softeners.

Tackling the 'Eastside Funk'

In Des Moines, Iowa, residents have faced a similar issue with a pervasive odor known as the 'Eastside Funk.' A city-commissioned study identified a cluster of industrial meat companies as major contributors to the smell. Dalton Jacobus of the Department of Neighborhood Services explained that under certain wind conditions, the odor plume can affect a significant portion of the city's population.

To address this, Des Moines is investing approximately $240,000 annually in odor-tracking technology. The city has installed a network of odor monitors around suspected facilities, which, in conjunction with weather data, provide real-time information on odor concentrations and their sources. This system has ended the