It is a high hardness, high density granular filter media. It is generally used as the bottom media of downstream filtration systems.
In single media filters, media with the smallest particles rise to the top due to the density difference. Because the smallest media is at the top, the filtration process is usually the first few seconds of the media. in centimeters. For this reason, the pressure loss increases rapidly, accelerating the media to enter the backwash.
Ideally, the media with the largest particles should be at the top and the particle or media size should decrease downstream of the water. In this way, the solids holding capacity of the media increases by keeping the large particles in the top layer, the middle particles in the middle part of the media and the smallest particles in the bottom layer. In this way, less backwashing will be required.
Garnet media is the heaviest media material due to its specific density of 4 and can filter up to 10 – 20 microns. Filter sand or Turbidex mineral is used as the middle layer, and anthracite media is used as the top layer mineral with the least density and largest particle size.
Multi-layer filters (multi-media) can be used both in water and wastewater. Although the amount of media can be changed according to the characteristics of the raw water and the quality of the treated water, generally 55% of the filter bed consists of low density minerals, 30% medium density and 15% high density media.
If heavier filtration minerals are to be used, the #8 Garnet acts as an ideal support bed.
PHYSICAL PROPERTIES
Color: Reddish Pink
Density: 130 - 140 Ibs/ft3
Size: 0.35 x 2mm
Specific Weight: 3.8 - 4.2 g/cm3
Uniform Coefficient: 1.3 - 1.5
Silica Content: Minimum
Acid Solubility: Minimum
