Flexible Tube Could Reduce Sewer Odors

摘要

OWNERS AND operators of (sewage collection systems have long tried to address the odor problems associated with sewers. Air treatment facilities and the addition of chemicals are the primary methods for reducing such odors, but a new approach under investigation in Los Angeles seeks to prevent the generation of odors in the first place by physically separating sewage and the air in sewers by means of a flexible tube. Because sewer odors result in part from increases in air pressure within a collection system, the idea is to install the tube in certain locations that typically generate higher air pressures, preventing the buildup of internal air pressure within the sewer system. In addition to reducing the need to use air treatment facilities or chemicals to control odors, the technology could help to protect sewer pipelines from the damaging effects of corrosive gases.