H Hydrex™ Comprehensive range of water treatment chemicals to suit all water treatment needs. Sludge treatment O Opus™ The Opus™ technology is a proprietary Optimized Pretreatment and Unique Separation process for desalination of feed water with high concentrations of silica, organics, hardness, heavy metals, boron and particulates. Membrane Filtration - reverse osmosis T TiPSS Veolia Water Technologies offers a range of equipment especially designed for (pre-) treatment of Oily Waste Waters either for Upstream or Downstream Oil & Gas applications. Sedimentation - Clarification - Flotation