A NOVEL METHOD FOR FILTER BACKWASH PERFORMANCE ASSESSMENT

摘要

This paper presents a novel method for filter backwashassessments including the use of a new low cost tool,a modified secchi disk (Figure 1 and Figure 2), whichhas been developed and manufactured in-house atSydney Water. This paper also documents the trialand application of this method at one Water FiltrationPlant which resulted in significant improvements. Theseincluded: better filter media cleaning, reduction inbackwash cost, removal of mudballs and the potential ofextending the filter media life.