The power created by waterfalls turnsthe turbines of an electric generating station. The bearings of these turbines are cooled with river water.
TheProblem
Since only coarse straining is done atthe pumping station, the cooling section of the bearings gets contaminated withsuspended solids.
TheSolution
An Azud filter was tried for a period of threemonths and it performed successfully. The filter has the advantage of being able to retain large contaminants(shells, stones, bones and algae, etc.) on the outer surface of the discs, andfiner contaminants (dust, larvae, etc.) in the depth of the discs thussupplying very clean water to the bearings.