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BIOFOS is the largest environmental company within wastewater treatment in Denmark.

Three wastewater treatment plants Lynetten, Avedøre and Damhusåen perform operation and management of the wastewater including total sludge handling.  The total capacity of the three plants is 1,400,000 PE.

The wastewater treatment is divided into three processes – mechanical, biological and chemical treatment.

  • The sludge is fed to digesters where it is decomposed by microorganisms and biogas is produced.
  • The biogas is used internally, as city gas, as heat to local district heating and electricity to the town network.
  • The sludge is incinerated and the residual products are reused.


BIOFOS own and operate the transmission line system connecting 2,300 km of sewages from ten municipalities to one of our plants.


Keywords for the company are:

  • Capacity planning
  • Optimization of the operation
  • Climate change adaptation
  • A focus on reducing the CO2 footprint
  • Public awareness


Our information center communicates sustainable information and advice to the public (10,000 guests/year).


BIOFOS is owned by fiftheen municipalities: Albertslund, Ballerup, Brøndby, Frederiksberg, Gentofte, Gladsaxe, Glostrup, Herlev, Hvidovre, Høje-Taastrup, Ishøj, København, Lyngby-Taarbæk, Rødovre and Vallensbæk.

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Primary contact
Stig Dalum
+45 32 57 32 32

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