Mutag BioChip high-performance biofilm carrier used in municipal wastewater treatment

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Courtesy of IWA Publishing

In the recent past, a new and very innovative biofilm carrier named Mutag BioChip, developed and produced by the German company Multi Umwelttechnologie AG, has increasingly and very successfully got into the news with regard to the biological treatment of municipal/domestic sewage. In this field of application, the chip-shaped high-performance biofilm carrier is unsurpassed especially when it comes to nitrification. Attached to the carrier media surface, which accounts for more than 3,000 m²/m³ (914 ft²/ft³) and which is provided in the form of a detailed pore system, the highly sensitive nitrifying bacteria are optimally protected from external mechanical influences. Despite the low diffusion depth of substrate and oxygen, the bacteria are optimally supplied from both sides of the thin carrier (thickness: approx. 1 mm).

In the following, it will be explained by taking the example of the Swiss-based municipal sewage treatment plant (STP) called “oberes Surbtal” how relatively easy it is to significantly enhance the nitrification performance of existing STP’s by applying Mutag BioChip carriers.

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