H Hydrex™ Comprehensive range of water treatment chemicals to suit all water treatment needs. Sludge treatment Hydrotech™ Drum Filters Patented mechanical self-cleaning drum filter for municipal and industrial recovery water applications. Filtration 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