Advanced Water Management Centre

Project Dates: 2014 to 2017

Overview

Concrete sewer corrosion is a long-standing problem, which costs tens of millions of dollars to the Queensland water industry every year. The Qld weather environment (hot with increasing temperatures due to tropical weather and climate change) increase the sewer corrosion rate, which is primarily caused by microbial sulfide oxidation on the concrete surface. Extreme weather events like floods and droughts aggravate the corrosion through different mechanisms including microbial inoculation, higher hydrogen sulfide production, and more exposed concrete pipe surfaces.