FAP

The peculiarity of the filter is that it doesn’t need a pump or air blown for the backwasher and basin.

Water to be treated is uniformly conveyed to the filter area by inner distributors. The filter bed consists of quartz sand particles with rated grain-size.

Water flows through the whole length of the sand bed and is filtered, is captured and leaves the filter through the weir.

Sand flows slowly and constantly downwards by gravity. At the bottom of the cone, sand is pumped by means of compressed air through the pipe, where sludge is separated and washed out.

Clean sand is recycled above the filter bed through a chamber.

 
 

The regular washing of the filtering sand keeps the filter bed clean and allows the control and reduction of heat loss in the filter.

The filter is equipped with an exclusive sludge washer/separator which is the vital part of the system.

A concentrated mixture of sand, water and sludge flows into the washer/separator through the pipe. Sludge is separated through floating sand, which is obtained by small air bubbles, blown out of a porous membrane. Sludge is pushed upwards by the floating air bubbles and is flushed along with dirty water and sand through the circular weir of the washer.
CAPACITY'm3/h
TYPE
10
FAP 10
20
FAP 20
30
FAP 30
40
FAP 40
50
FAP 50
60
FAP 60