Select your coatings carefully to reduce corrosion.
A common method for preventing the biogenic sulfide corrosion of concrete is the use of 100% solids high-performance epoxy systems.
Since the performance is formulation-specific, it is important that 100% solids epoxies be designed for severe wastewater exposures. Specifically, the epoxy formulations should be developed for low permeation properties to resist H2S and other gases, and the sulfuric acid present within these aggressive environments.
Epoxy coatings come in several types: epoxy mortars trowel applied between 125 and 250 mils thick, spray-applied high-build liners at 60 to 80 mils thick, and spray-applied fiberglass-reinforced high-build liners at 80 to 125 mils thick.
Epoxy selection depends on the exposure conditions to elevated H2S gas, impact and abrasive forces, and thermal changes within the structure. A reputable coatings manufacturer can assist with the appropriate product selection.