Case Study | September 4, 2013

Sustainably Eliminating Collection System Odors With Oxygen

Source: BlueInGreen
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In summer of 2012, The City of Rogers, Arkansas and BlueInGreen partnered to study the effects of dissolved oxygen on hydrogen sulfide reduction within the city’s sewer collection system. The study focused on a particular stretch of the gravity interceptor which runs along an area known as Turtle Creek. The primary objective was to demonstrate the reduction of hydrogen sulfide through oxygenation – specifically, utilizing the BlueInGreen SDOX-CS technology to inject oxygen via a sidestream process within the gravity system.

Hydrogen sulfide, H2S, is a toxic substance that acts as a respiratory depressant in both humans and wildlife, and is probably the most difficult compound plaguing wastewater collection systems today. Hydrogen sulfide gas forms within a collection system as a result of bacterial action on organic matter under anaerobic conditions. The formation of hydrogen sulfide raises two primary concerns for those charged with maintaining a city’s or industry’s collection system: nuisance complaints from odor emissions as well as corrosion to steel and concrete structures. Millions of dollars are spent annually to address odor issues and correct long-term corrosion damage to structures within collection systems.

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