Christian Stöhr GmbH & Co. KG
About
Christian Stoehr GmbH & Co. KG manufactures the Hel-X family of biofilm carrier media at its plant in Marktrodach, Germany. A third-generation family business marking its centenary in 2025, the company makes every product domestically using proprietary processes refined in an in-house research laboratory, and carries DIN EN ISO 9001:2015 certification. Carrier formats range from the original helical Hel-X element for moving-bed, fluidized-bed, and swirling-bed reactors to the highly porous Hel-X Flake, the Flake 30 version for heavily loaded compact plants, rod-shaped Stangen, and Cluster media for combined suspended and fixed-bed duty. Beyond municipal and industrial wastewater treatment, aerobic and anaerobic alike, the carriers see service in recirculating aquaculture and koi breeding, biogas plants, gas scrubbing and cooling, and exhaust-air purification. Stoehr belongs to the German water association DWA.
Key Products
Flagship helical biofilm carrier media for MBBR, fluidized bed, and swirling bed biological wastewater treatment processes, providing high surface area for biofilm growth with mechanical stability.
Flat, highly porous chip-format biofilm carrier with extremely large specific surface area derived from material porosity, protecting biomass from abrasion within pores.
Optimized variant of Hel-X Flake designed for heavily loaded wastewater and compact treatment plants, where biomass is protected from shear in pores while surface biofilm is self-cleaning.
Rod-shaped biofilm carrier format for specialized fixed-bed and moving-bed biological treatment applications.
Cluster-format biofilm carrier for combined suspended and fixed-bed biological treatment configurations.
Advanced variant of the Flake carrier with enhanced surface area and performance characteristics for demanding wastewater treatment applications.
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