Brandol® Material product photo Primary L

Brandol® Material

General Material Description

BRANDOL-diffusers are very proven duroplast
diffusers mainly used for the aeration of waste
water for more than 50 years. These are
composed of pure quartz sand bonded with a
resin binder to form a stable, mechanically
strong porous element. Due to the exactly
defined quartz grain size distribution and a well
controlled production method the BRANDOL
cylinders and discs have a remarkably
homogeneous porous structure. This results in a
very uniform air distribution and bubble release.



Description
General Material Description

BRANDOL-diffusers are very proven duroplast
diffusers mainly used for the aeration of waste
water for more than 50 years. These are
composed of pure quartz sand bonded with a
resin binder to form a stable, mechanically
strong porous element. Due to the exactly
defined quartz grain size distribution and a well
controlled production method the BRANDOL
cylinders and discs have a remarkably
homogeneous porous structure. This results in a
very uniform air distribution and bubble release.

Applications
align="left">Examples  Fine bubble aerationBR 60 cylinders and BR 50 discs:
Fine bubble aeration for activated sludge processes for nitrification
and C-decomposition
  • municipal waste water treatment plants
  • industrial waste water treatment plants
  Coarse bubble aerationBR 120 cylinders:
Coarse bubble aeration of waste water in grit chambers and mixing:
  • waste water mixing avoiding sedimentation
  • homogenization of waste water feed
 
Further applications possible
Specifications
Physical Properties
 
Brandol (BR) UnitBR 50BR 60BR 120
         
Mean pore size µm 70 75 200
         
Porosity % 35 32 30
         
Head loss (air vs. water)
at air load
mbar
m3/h * disc
m3/h * m
20
4
20

8
5.5

8
         
Bending strength MPa >20 >12 >12
         
Material density g/cm3 1.55 1.6 1.6
         
Max. temperature resistance °C 130 130 130
         
Dimensions disc (Ø/h) mm 232/20 - -
         
Dimensions cylinder (Do/Di) mm - 70/40 70/40
 


Chemical Resistance

BRANDOL diffusers are resistant up to pH 9.5 against municipal waste water as well as against waste
water from industrial sewage water plants. BRANDOL diffusers have a good chemical resistance against
most solvents, hydro carbons and acids. Chemicals that can attack the BRANDOL diffuser material are for
instance aniline, calcium chlorate, furfural, potassium chlorate, potassium hydroxide, aqua regia, cresol,
natrium chlorate, natrium hydroxide, sulfuric acid concentrate, perchloric acid, nitric acid (> 10%) und
trichloroacetic acid (> 50%).

Standard Dimensions

 
TypeDo / Di
(mm)
Length
(mm)
Diameter
(mm)
Height
(mm)
Area
(m2)
Weight
(kg)
               
Disc 50 - - 232 (9") 20 0.03 1.3
               
Cylinder 60, 120 70/40 500 - - 0.11 2.1
               
Cylinder 60, 120 70/40 500 - - 0.16 3.1
               
Cylinder 60 70/40 1000 - - 0.21 4.1
 


Special dimensions and special products on request.


General Information

  • Brandol diffuser can be regenerated in-situ in by acid injection in order to remove calcium carbonate depositions.
  • BRANDOL diffusers have a remarkable lifetime and a low pressure drop. The resin bonded material is
    designed for decades of perfect operation.
Performance
Differential Pressure Diagram
 

 
BR 60 cylinder

   
   
 

 

BR 50 disc

Ordering Information

For more information about Ceramics, please contact a Pall representative to discuss your application. Please note, Ceramics are not available everywhere. Contact us for more information about availability in your region. Contact Pall

Segment
Ceramics