Product Description

The Wangen BIO-MIX Pump

The Wangen BIO-MIX Pump can address your needs for conveying substrate, feeding in solid material, or loading the separators in the rigorous operation of your biogas plant.

WANGEN BIO-MIX pumps have been integrated for many years in the energy production process and undergone continuous further development and optimization. They are suitable for conveying maize silage, grass silage, GPS, solid manure, poultry dung, waste and co-ferments, which are mixed with liquid in the pump.


Conveying Substrate

Pumps in biogas plants have to convey viscous substrate between the fermenters. We offer different types of pumps according to the substrate to be conveyed and the biogas plant in question. Our years-long experience enables us to develop practice-related solution concepts.

WANGEN pumps have robust designs because substrates are often highly viscous and have to be pumped over long distances. Supplemented with dry running protection, pressure gauges or flow meters, they  display excellent performance even in automatic continuous duty.


Feeding in Solid Material

With WANGEN BIO-MIX pumps, solid materials are conveyed into the pump via the jaw hopper and mixed there with liquid from fermenters, after-fermenters or liquid manure tanks. Only then is the mix transferred to the fermenter.

The advantages of feeding in liquid with WANGEN BIO-MIX pumps:

  • Good mixing in of the solid materials (less stirring required in the fermenter)
  • Troublefree conveyance over large distances and great differences in height (e.g. when extending biogas plants)
  • Several fermenters can be loaded with one feeding system
  • Optimum mixing in of even difficult solid materials, e.g. grass silage and solid manure.

WANGEN BIO-MIX pumps prove that we combine experience with a readiness to create application-specific production innovations. Our aim is the trouble-free operation of biogas plants.


Loading the Separators

WANGEN pumps perform special tasks in biogas plants such as loading the separators for separating solid and liquid phases.

Conveying the substrates with their mostly high dry substance contents (DS) requires sophisticated pump technology. Optimum pumping results are guaranteed by the flow-optimized suction housing and a constant joint diameter which prevents the plating of long fibers.

Wangen BIO-MIX


Specifications of the Wangen BIO-MIX

Performance Data

  • Flowrate: 30, 40, 85, 150 m³/h
  • Maximum differential pressure: 9, 12, 12, 12 bar

Benefits & Characteristics

  • Excellent price/performance ratio
  • Large viscosity range
  • Good pumping performance even with abrasive and fibrous materials in the media
  • Good pumping performance even against high pressure
  • High operational reliability
  • Long service life
  • Rigorous modular principle for high flexibility, low stocking of spare parts, short downtimes for maintenance and repairs
  • Low servicing costs
  • Optimum service life even with difficult media
  • Easy to maintain thanks to large cleaning openings
  • Optionally with base plate
  • Insensitive to foreign matter
  • Several fermenters can be filled with one feeding system
  • Low Life Cycle Costs
  • Various hopper sizes available, including wear protection
  • Modular design for high flexibility
  • Pump delivery over long distances and large differences in height

Fields of Application

WANGEN BIO-MIX pumps are used as central pumps in biogas plants. They convey the following media – mixed respectively with recirculated or liquid manure – into the fermenter.

  • Dung: Horse and cattle dung, poultry dung
  • Silage: Maize silage, grass silage, GPS
  • feeding
  • filling

Suitable for the Following Media

  • apples
  • fish offal
  • whole crop silage
  • grass
  • liquid manure from chicken
  • corn silage
  • bovine manure
  • cattle slurry
  • slaughterhouse waste
  • food waste
  • pomace
  • sugar beets
  • liquid manure


  • Fully developed, robust universal joint with pre-feeding screw
  • Service-proven sealing systems
  • flexible drive selection
  • Reinforced cardan joint
  • Specially designed joints
  • Stator with S-cone inlet for optimum filling of the pumping chamber
  • Robust bearing pedestal for high force transduction
  • Suction housing with large inspection and cleaning openings
  • Driven by helical geared motor
  • Robust bearing pedestal with close-coupled drive and self-centering of the drive


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