Odor Reduction in Wastewater Collection System

ODOR REDUCTION IN WASTEWATER COLLECTION SYSTEM

Background

A wastewater collection system running through a suburban environment had a strong smell of hydrogen sulfide (H2S) that was causing complaints. Several different programs were tried by the plant to reduce the odor problem and
reduce complaints by the surrounding community. A ferrus sulfate program was tried. The program was not cost effective and the community complaints
about odor were continuing.

A magnesium hydroxide program was tried. Positive results were initially achieved and the program was cost effective. However, there were mixing problems in the bulk tank, settling of solids in the feed line and pH fluctuations in the system.

Solution

An opportunity was given to the EnviroScrub® program. The program consisted of a tote of chemical with a metering pump feeding into the lift station. Enviro-Scrub® was fed into the lift station influent ahead of the baffle station.

Results

No further complaints have been received from the community. The Enviro-Scrub® program is administered by a metering pump on a continuous basis thereby reducing labor costs.