Filter medias

Birm filter media 28.3 L

Artnumber: BIRM
88.00 USD
Article: BIRM

Birm is a granular filter media for the purification of water from soluble iron and manganese compounds. The Birm filter media can be used in both pressure and non-pressure water supply systems.  

Key advantages:

  • effective method of iron reduction

  • low operating costs

  • long service life

  • wide range of treated water temperature

  • light weight of the material reduces water consumption during backwash


Technical characteristics

Color

black

Bulk density, kg/dm3

0.64-0.72

Real density, kg/dm3

2.0

Effective bead size, mm

0.48

Uniformity coefficient

2.7

Particles size, mm

0.43-2.0

Operating conditions  

Bed depth, mm

760…900

Freeboard (min.)

50% of bed depth

Service flow rate, m/h

8.5...12

Backwash rate, m/h

25...29

Backwash bed expansion (min.)

20...40% of bed depth


Birm acts as a catalyst accelerating the oxidation reaction of Fe2+ to Fe3+ with oxygen dissolved in the water. As a result of the following hydrolysis, insoluble residue Fe(OH)3 is formed, which is removed from the water by filtration.

Removal of the residue filtered in the operating mode from the layer of the media is performed during backwash.