ABSTRACT
Kanchan Arsenic Filters (KAF) are widely used to provide arsenic (as) free drinking water in Nepal and many other countries. The performance of these filters for As removal and the controlling factors were evaluated. It was found that changing the filter media increased As removal capacity, whereas cleaning and using the same media with As free water or changing the Iron (Fe) nails did not improve As removal performance. Field experiments are in progress by introducing Fe in raw water to improve As removal capacity of these filters.
