SILEX™

The Silex sand filter is a deep bed upflow type filter
with continuous bed cleaning. Its effectiveness lies in the fact that there are no shutdowns necessary for backwash cycles for the sand washing process.
The inlet is at the bottom of the filter and as the feed flows upwards trough the sand bed, the solids are retained in the filter sand. The filtrate exits over a weir at the top. The sand sinks and gets into the airlift pipe in the center of the filter. It transports the mix upwards to the sand washer. The solids are separated from the sand in the washer. The clean sand falls back onto the sand bed thus creating the internal sand circulation.