Wastewater treatment screener TWISTER ®

screwsolid/liquid

Characteristics: The Helicoidal conveyor screen TWISTER ® is combined equipment for the separation of solids in the waste water and their posterior compacting and dehydration. Characteristics: The Helicoidal conveyor screen TWISTER ® is combined equipment for the separation of solids in the waste water and their posterior compacting and dehydration. The solid material in suspension in the transporting liquid deposits itself in the screen blocking it and causing a raise in the upwards water level and a drop of the downwards water level. At that moment the helix starts to work, cleans the screen, brings the material up, it dehydrates it and it compacts it. The equipment is composed of: -Filtering screen -Transporting conveyor -Compacter The filtering screen is formed by a screen with mesh of 0.25 to 10 mm that retains the solids in suspension in the transporting liquid. This screen is kept clean by means of the corresponding brush which is fixed to the exterior extreme part of the helix. The screen can be of two types: -Johnson profile type screen between 0.25 and 10 mm -Perforated or triangular plate screen with holes between 3 and 10 mm The transporting conveyor is formed by a helix without axis that allows the deposited solids to be raised. The non axis conveyor allows extracting differently shaped and sized materials that in another way are difficult to transport. The compacter, the own transporting helix serves to carry out the compacting dehydrating of the screenings, with results of a volume reduction higher even than 50%.