Coarse and Fine screens

Screening is the first operation at any wastewater treatment plant. The screening process involves the removal of large non-biodegradable solids that frequently enter a wastewater works, such as rags, papers, plastics, latex, tins, containers and wood.

Efficient solids removal protects the downstream plant and prevents any possible damage, unnecessary wear tear, pipe blockages and the accumulation of unwanted material that will interfere with the required wastewater treatment processes.

The screenings volume depends, not only on the separation size of the screen, but also on the type of sewer system.

The following coarse screens are available:

  • MULTIGUARDTM is a coarse screen with comb plates as cleaning elements that are fixed to multiple carrier beams. The beams are connected to two strands of chains that can easily be tensioned.
  • RAKEGUARDTM is a robust front raked bar screen which is well suited to raw sewage applications.

The following fine screens are available:

  • BANDGUARDTM high efficiency band screens used in sewage treatment plants around the world.
  • FINEGUARDTM  is utilised for fine screening and removes floating and submerged debris. It is commonly installed in inlet works downstream from coarse screen or bar screens and prevents clogging and damages from components downstream.
  • SPIROGUARD® Compact Cleaner (CC) Screen is designed as a stand-alone unit for pumped flow applications. SPIROGUARD® Channel Screen (CS) Screens can be installed for a variety of flow rates and upstream and downstream water levels. The angle of inclination can be adjusted depending on your concrete channel specifications.