Collection systems can have odors due to long residence time and low flows. If odors go unaddressed H₂S can form and cause corrosion and hazardous conditions. Using caustic and other harsh chemicals can be dangerous.
Preventing the H₂S from forming is essential. This can be done biologically or with calcium nitrate. If H₂S has already formed it can be degraded biologically with MB 17 BP or oxidize it with GCPRO Oxidizer.