In municipal and industrial wastewater management, odour issues are rarely just aesthetic concerns. More often, they are the surface indicator of deeper, more hazardous operational challenges. At the top of this hazard list is hydrogen sulphide (H2S). Characterised by its distinct “rotten egg” odour at low concentrations, H2S is a highly toxic, highly volatile compound. It presents immediate atmospheric safety risks to operators, causes devastating Microbiologically …