Sodium Acetate vs Acetic Acid: Safety and Economy of External Carbon Sources

Acetic acid (glacial acetic acid GB/T 1628) can also serve as carbon source with fast denitrification rate, but has corrosiveness, volatility and irritating odor, requiring higher storage/transport and safety standards; sodium acetate is a salt, safer and easier to dose, more worry-free in operation.

Both refer to relevant standards; WWTPs should weigh safety, cost and site conditions. Sodium acetate, with comprehensive advantages, becomes the more common choice.