The Spiral Screw screen is mounted in an
open channel with an incline of 35 to 45°. It can
be in made from two types of material. Perforated &
Wedge wire type. The slotted or perforated mesh is at the bottom of the screen and the whole piped portion continues upwards encompassing the screw. The internal part of the screen is continuously cleaned by special brushes fixed on the outside diameter of the spiral. As the water runs through the screen the spiral screw conveys the solids up towards the outlet. It is recommended for fine echanical wastewater treatment with a high fibrous content such as municipal waste water, pulp and paper plants, food processing plants and textile industries.
- Alarm systems of the normal operation indication, the emergency stop, the wastewater top level in the channel and other indicator are provided. It is possible to transfer equipment status data to a higher level automated process control system depending on the client's requirements.
- The screw rotation can be reversed in order to eliminate jamming and congestion.
- Screens fine material in wastewater that is hard to detect. Solids like feather, fur, wool, fine plastic, sanitary pads etc. can be easily removed.