Biogenic H2SO4 Corrosion of Concrete in Pur Oxygen Activated Sludge Bioreactors, 2006 Engineering, Pulping, and Environmental Conference
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Significant concrete corrosion has occurred within the headspace of a pure oxygen activated sludge treatment (OAS) bioreactor treating pulp mill effluent. The severity of damage required extensive and expensive repair, which comprised rehabilitation of the concrete and installation of a protective coating.