SiderPol Screen Compactor

Screening is the first function which must be considered in a civil or industrial wastewater treatment plant. Its purpose is to intercept and remove suspended solid particles that can damage and/or slow down the depurative processes and plant equipment.

The screen/screw compactor with self-cleaning brush is specially designed for fine screening of sewage at the entrance of the plant or in many industrial applications; generally, it is installed downstream of a coarse screen.

It is multifunctional screen as includes the following operations:

  • Screening
  • Lifting and washing of the screened material
  • Compacting/dewatering
  • Discharge

The filtration level is defined depending on the type and amount of material expected and according to the scheme of the purification process adopted. The screen filter consists of a semi-cylindrical basket. The machine is able to block the small suspended solid particles (larger than the screen perforations), lifting them out of the water flow, by means of a screw, compact and convey them to discharge, placed at the top of the machine. During lifting, the material is washed to remove soluble organic substances.

Panel cleaning is via a 2-stage cleaning process. First, a solid filled modular rotary brushing system with optimised position and bristle configuration removes the majority of screenings. The brushing system allows speedy replacement and adjustment. Second, wash water jets provide the final polish and ensure the rear cavity of the equipment remains free from blockage.

Each panel has a replaceable side seal manufactured from bearing grade ultra-high molecular weight polyethylene fitted between the chain and panel to effect a close tolerance seal, with the seal fitted to the screen structure. The main structural side plates are manufactured for strength and rigidity. These plates incorporate side outlet passages at flow level to allow passage of screened flow minimising headloss.

The high strength chains run in ultra high molecular weight polyethylene guides and are driven by sprockets attached to the head shaft running in ball bearing plummer blocks. The drive is from a shaft mounted gearbox with a choice of motor types to suit specific applications. The drive continually moves panels from the screening zone, in the channel in front of the equipment, to the cleaning mechanism where the debris is removed from the perforated panels.