Grit scrapers are usually operated after coarse screens, before primary sedimentation tanks.

The purpose of the grit scraper to be operated after the screens is to dispose and wash the collected grit easily.  The grits and any other high dense particles that may defect the pumps and other mechanical equipments within the system and the scum that may clog the pipes are collected by the grit scraper.

The grit and the scum that are collected by the grit scraper, are scraped by the help of the longitudinal motion bridge The particules collected at the surface are scraped through to the scum hopper by the surface scraper that is mounted to the bridge. Bottom scraping is accomplished by vaccuming the grits at the bottom of the tank with the help of the grit pumps. The grits are discharged to the sand seperator/washer which is the next process.

The motional mechanism of the bridge may be either rubber wheel or rail with steel wheel system.

All steel parts of the system are manufactured in stainless steel. They may be manufactured in epoxy coated carbon steel or hot dipped galvanized steel upon request
 

Equipments of the system;     1. Power panel     2. Bridge     3. Motor reducer group     4. Steel / Rubber wheel     5. Surface scraper     6. Grit pump     7. Aeration pipe

Technical Properties