Storm Screen ROTAMAT RoK2 with Integrated Wier Measures Stormwater Flows

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During and after storm events large amounts of debris are discharged to streams, rivers and lakes through stormwater overflows of combined and sanitary sewer systems. Particularly endangered receiving water courses and nature preservation areas require more extensive measures concerning the treatment of stormwater.

The inverted upward flow storm screen ROTAMAT RoK2 is the ideal solution for this task, whether for new structures or refurbishment. Two-dimensional screening guarantees a very high solids retention combined with automatic, gentle cleaning of the perforated plate.

RoK2 screens are horizontally installed before the downstream side of overflow weirs. A screw flight is mounted on a half cylinder of perforated plate. As the stormwater flows through the horizontal perforated half-pipe of the screen trough, the solids are retained. A screw, with a brush attached on its flights, rotates within the semicircular screen trough. It cleans the screen and pushes the screenings gently towards the end of the trough. At the end of the trough, the screenings are returned into the sewer and carried to the wastewater treatment plant. During storm conditions the screen is automatically started and then works fully automatically.

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