B BioTherm™ By using BioTherm™ the amount of sludge is reduced as a considerable part of the organic matter contained within the sludge is converted into biogas, and the digested sludge is dewatered to achieve a high dry solids content. Sludge treatment I Ionsoft® High-quality industrial and commercial water softeners. Ion exchange and Deionisation 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