Applications – Case studies

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ASTRASAND® is a new and improved continuous sandfilter, developed for physical-chemical and/or biological treatment of different types of water, such as process, waste, surface, cooling and ground water. ASTRASAND® works as a continuous process, in which the filter bed is cleaned during the filtration operation, and as a result process interruptions are eliminated. ASTRASAND® is self-cleansing. THIOTEQ® (formerly named THIOPAQ) A technology for producing biogenic H2S to remove metal ions by mining and metallurgical water streams. SULFATEQ® A technology developed to remove sulphates and produce H2S, closely linked with the THIOTEQ® system. BIOMETEQ® A technology embedded in an ASTRASAND filtration system based on a self-cleaning sand filter with bacteria that cause common heavy metals such as Iron, Copper, Nickel, Zinc, Lead, Cadmium and Mercury to precipitate as metal sulphides. Metal(loid)s like Selenium, Molybdenum, Chromium and Uranium are precipitated into elemental form (selenium) or as metal (hydr)oxides.

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