For practice, suitable sulfide removal methods are precipitation of sulfide, sulfur removal from H2S-enriched stripping gas (Jensen and Webb, 1995; Smet et al., 1998), or partial oxidation of dissolved sulfide. The selection of the most suitable method depends on technical and economical considerations. The rela-tively high-energy requirements for stripping or the high chemical use and disposal (chemical sludge such as FeS or MnO2) costs constitute important drawbacks of the first two methods.