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External MBR Technology

The Membrane Bioreactor (MBR) is a compact wastewater purification technology, that combines biological treatment and membrane filtration.

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Dissolved and suspended organic matter in wastewater are mineralized in the bioreactor to CO2 and water. Berghof tubular UF membranes separate the purified water from the biomass.
Contrary to other MBR's systems the External MBR of Berghof positions the membranes outside the bioreactor with time and cost advantages of economic operation.
It avoids additional costly lifting equipment and extensive chemical cleaning operations.

Berghof is one of the leading providers of  the innovative External MBR technology based on our high quality tubular membrane module products.
The Berghof External MBR technology has proven its reliable & economical operation over the last decades. Today over more than 140 full scale MBR plants are equipped with Berghof products and attest our success.

Characteristics of Berghof External MBR Technology

  • Tubular membrane of 8.0 mm to 10.3 mm diameter
  • No blockage of tubular module & very high physical strength
  • High permeate flux (up to 180 lm-2h-1)
  • Economical control of peak flow variations
  • Low membrane replacement cost
  • Small footprint
  • Simple cleaning procedures (CIP) thanks to external installation
  • Easy access and replacement
  • Healthy working environment
  • Optimum surveillance
  • Ergonomic maintenance
  

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For the complete range of wastewater characteristics Berghof offers the optimum MBR-concept:

Links
Berghof BioFlow - clarifying liquids with a relaively high soids content
Berghof BioAir DS - for treatment of municipal wastewater and less complex and less concentrated wastewater
Berghof BioPuls - for reliable and economic treatment of medium strength wastewater

  BioFlow BioPulse BioAir DS
Application

Biomass separation
MBR technology
Industry

Biomass separation
MBR technology
Communal/Industry

Biomass separation
MBR technology
Communal/Industry
Waste water concentration high medium low

Sludge concentration

 up to 25 g/l

up to 15 g/l

up to 15 g/l
Velocity 3,5 - 4,5 m/s

1,0 - 2,0 m/s

0,2 - 0,5 m/s
Permeat flux 60 - 100 l/hm2

45 - 60 l/hm2

20 - 50 l/hm2

Energy consumption, net

 2,5 - 7,0 kWh/m3

0,4 - 2,0 kWh/m3

0,2 - 0,5 kWh/m3
Membran diameter 8 mm 8 mm 8 mm
Permeat backwash no yes yes
Air injection no no yes
Feed flush possible possible possible

 

 BioFlow BioPulse 
Other applications Wine/Fruit juice filtration
Oil/water separation
Emusion separation
Material recovery		 Textile manufacturing wastewater
Laundries wastewater