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BIOGEST - Model Type SAS - Storm Screen ...

BIOGEST - Model Type SAS -Storm Screen for Wastewater Overflow Management

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The BIOGEST® Storm Screen Type SAS is a robust screening solution designed for effective performance during periods of heavy rainfall, addressing the challenges associated with wastewater overflow management. Specifically installed at overflow weirs, this system can be seamlessly retrofitted into existing infrastructures. Its innovative design features a semicircular perforated screen basket, providing a clear path for wastewater flow while the system automatically purges debris. This setup ensures the efficient retention of floating matter and sediments, thereby mitigating environmental pollution risks. The system’s operation hinges on a precisely calibrated level measurement before the weir; when water reaches a critical point, the gear motor activates a rotating screw conveyor to maintain clear conveyance channels. Furthermore, its compact gear motor is tailored to the machine's dimensions, optimizing operational efficacy and maintenance requirements.

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The BIOGEST^® Storm Screen ensures high performance screening during periods of heavy rainfall. The solid retention system is installed at overflow weirs and can easy be retrofitted in existing structures. The wastewater flows through the perforated screen basket, which is arranged as a semicircle section.

The screen basket is fully automatically cleaned during operation. The system retains floating matter and sediments efficient and protects the environment from pollution.

The BIOGEST^® Storm Screen Type SAS is installed at the overflow weir before the weir. It consists of a perforated semicircle filtering basket, with holes of 6 mm diameter, a rotating screw conveyor and a zone of calm for the discharge of the collected screenings. It is kept clean by a rotating screw conveyor and the screened water can be release toward the forwarding water flow.

The screen is controlled by a level measurement installed before the weir. As the water level rises to a critical overflow point the screw conveyor starts to rotate. It keeps the holes clean from any debris and transports the screening debris in axial direction toward the discharge zone. The gear motor placed at one end of the machine is compact in size and is sized based on the length and diameter of the machine.

Ideal solid retention by means of two-dimensional screening
Forwarding of extracted screening material to the WWTP
Efficient and continuous automatic cleaning of screen surface
Easy retrofitting through existing manhole and on existing overflow weirs
Fully automatic operation by the integrated control and monitoring of the water level
Robust stainless-steel construction with minimal maintenance
Screen basket size from DN 300 to DN 1000
Capacity up to 10 m³/sec.
Perforation 6 mm (other sizes on request)