48" AGF 910101-001049 / 01.2020
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AGF Filters Working Principle
1.
Media Filters
Pressure filtration vessels with loose media are widely used in industrial and irrigation filtration applications. Amiad’s AGF
media filter-vessels are high quality, corrosion resisting tanks, designed for flexibility and custom designed applications. The
media vessels are designed for perfect water distribution during filtering and backwashing, providing high filtration efficiency.
The AGF filter line consists of the necessary accessories for constructing a fully operational filtration application; a complete
line of manifolds, standard connectors, valves, granular media types and control systems.
There are various granular bed-types for perfect matching with the raw water type and the filtration degree required. In
addition to other bed types, these may include various grades of sand, gravel, and basalt.
A typical depth filtration installation can be assembled from a single unit or several media vessels connected together to form a
filtration battery. The number of the vessels, the diameter of the manifolds and the size and number of the valves depend on
the required flow-rate, raw water quality, and the required filtration degree of the system.
2.
How the AGF Filters Operate
The AGF is a pressurized media filter which operates by trapping the suspended particles in unfiltered water as it flows through
a bed of media in a pressurized tank.
The recommended filter media types are: crushed basalt, crushed silica, quartz sand, PEP Active, and other catalytic media.
The sizes of the media vary, causing the water to flow through a maze of passages on its way through the media bed, from the
inlet to the outlet of the filter. Due to the large volume and contact area between the water and the media particles, various
physical forces are applied and act to retain the contaminating particles.
The efficiency of large particle retention is high, as long as the media is kept clean. The catalytic media type applies additional
chemical-physical attraction forces between the media and particles, especially those of organic nature, giving more efficient
organic material removal. In addition, the round shaped media particles cleaning requires less water in comparison with other
media types.
2
4
Legend:
1 – Top Access Port
2 – AGF Tank/Vessel
3 – Distribution Plate
4 – Diffuser complex
with underlayer
distribution nozzles
5 – Vacuum Release
1
3
5
Outlet
Intlet
