Characteristics: Granular material, opaque white or yellow, completely washed to remove organic impurities

SiO2 content over 96%
Density:   2.5-2.8 grams/cm3
Volume:          1.4-1.7 grams/cm3

Particle size composition:

Particle size:        (30 – 40) mm

Uses: Gravel filters do not filter water directly, but act as a support layer, preventing filter sand from penetrating into the water collection system. It is also very important when performing backwashing to contribute to creating a uniform flow of water and gas to the upper layers. To maximize the performance of the filter, it is important to use a good quality gravel filter. For our filter gravel, almost all types of gravel with flat surface, cracked, fragile grain shape, shell, etc. are removed through the factory’s screening equipment system. Therefore, we always provide high quality round gravel.

Application: Used as a support layer in filter tanks, combined well with other mechanical water filtration materials such as Anthracite coal, Activated carbon, Manganese sand, quartz sand of water supply plants, industrial, urban and civil wastewater treatment works. Especially when filtering in reverse flow or when treating water in large lakes, it will bring high capacity. In addition, they are also effectively applied in pressure water filter tanks…