Streisal GmbH
About
Streisal GmbH, founded in 1988 and headquartered in Wangen im Allgäu, Germany, manufactures energy-efficient agitators and mixing systems for biogas plants, municipal wastewater treatment, and industrial process engineering. All products are designed and built in Germany, and the company holds ATEX, CSA/UL, and IECEx explosion protection certifications for deployment in hazardous atmospheres worldwide. Streisal's biogas lineup includes the BIOBULL large-blade digester agitator, BIOSUBSTRATOR height-adjustable horizontal rod agitator, BULLDOS agitator with integrated solid feed for simultaneous mixing and substrate loading, and the Maischebull and Hydrobull high-performance systems for mixing pits and hydrolysis reactors. For wastewater applications, Streisal offers TSR energy-saving submersible agitators spanning 1 to 18.5 kW, TSRL hybrid submersible agitators optimized for highly viscous fluids with elevated dry matter content, ATP/BTP low-speed submersible agitators for gentle mixing, TRV compact submersible agitators with direct drive for space-constrained installations, and TSRM submersible motors. The sideEntry gas-tight compact adjustment device, introduced in 2021, enables safe repositioning of submersible agitators inside sealed biogas digesters. Streisal operates its own fluid mechanics laboratory and large-scale test tank for R&D, and equips its agitators with the SafeGuard automatic torque monitoring system and SafeBox vibration monitor for continuous operational protection.
Key Products
Energy-saving submersible agitator with large-blade design specifically engineered for biogas digester mixing, first introduced in 1994.
Height-adjustable rod agitator for continuous mixing of high dry matter substrates in biogas fermenters, available since 2006.
Combined agitation and solid substrate feeding system for biogas plants, enabling simultaneous mixing and feeding operations.
Energy-optimized agitator designed for highly viscous fluids and biogas tanks with higher dry matter contents.
Energy-saving submersible agitator range for municipal and industrial wastewater treatment applications.
Low-speed agitators for gentle but effective mixing in municipal and industrial wastewater treatment processes.
Direct-drive compact submersible agitators for space-constrained installations in wastewater and process tanks.
Energy-saving submersible motor units for driving agitator propellers in demanding wet and corrosive environments.
High-performance agitating system for mixing pits in biogas and wastewater pre-treatment applications.
High-performance agitation system for hydrolysis reactors and pre-treatment stages in biogas plants.
Compact, gas-tight positioning device for submersible agitators in sealed biogas digesters, introduced 2021.
Vertical configuration of the Biobull agitator for applications requiring top-mounted mixing in tanks and digesters.
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