Corroded concrete: is H₂S the cause?
One of the characteristics of hydrogen sulphide is that it causes corrosion of sewerage and WWTP structures. In the hot and humid atmosphere of a sewage network, H₂S is oxidised into sulphuric acid. This sulphuric acid is corrosive and attacks wastewater and sewage treatment facilities. It attacks the concrete, copper, iron and silver that can be found in treatment tanks, buildings and electrical equipment. If no preventative action is taken, pipes exposed to this corrosion may eventually collapse. Corrosion particularly affects the headspace of structures in sewers or WWTPs where turbulence and effluent H2S are at their greatest.
The speed of corrosion will depend on the extent of the H₂S formed and the level of preventative treatment. However, preventing H₂S odour problems with YaraNutriox also combats corrosion and avoids the collapse of pipes.