Slide background HUBER Technology - More than 33,000 Installations Worldwide
Click through to learn about their innovative high quality stainless steel systems for municipal wastewater & sludge treatment
Slide background EPCO Australia - Proudly Delivering Water Assets for Over 50 years
Click through to learn about Epco's high quality clarifiers, digesters and package plants for municipal wastewater treatment
Slide background MENA Water - MBR Packaged Sewage Treatment Systems - Deployable or Permanent Solution for Housing Developments, Towns, Villages, Resorts, Mining and Construction Camps and Emergency Relief Operations
Slide background MENA Water - Packaged Drinking Water Treatment Systems - Deployable or Permanent Solution for Housing Developments, Towns, Villages, Resorts, Mining and Construction Camps and Emergency Relief Operations
Slide background Organica Water - A Truly Unique Solution for the Treatment and Recycling of Wastewater
Click through to learn how Organica designs WWTP's that have a fraction of the normal foot print and are odour free.
Slide background AEROSTRIP® - Advanced Fine Bubble Aeration Diffusers
Click through to learn more about the world’s most efficient biological aeration fine bubble diffuser systems
Slide background FlooBed® MBBR Technology for Municipal Wastewater Biological Treatment
Click through to learn more about how this advanced system can save energy and space treating your wastewater.
Slide background Neutralox Odour Control - High efficiency, compact photoionisation alternative
Click through to discover why Neutralox is Ideal for both centralised & decentralised removal of wastewater generated odour

Oygarden STP – Norway’s Latest STP Buried in a Mountain

Norway’s west coast comprises of more than 300 islands that lie within the municipality of Fjell. With the nearby city of Bergen now more accessible via new transport infrastructure, the Fjell region has been experiencing rapid population growth.

To comply with recently changed environmental regulations a new wastewater treatment plant was required and given the landscape in this part of the world, the construction of the new Oygarden STP required a design that utilised as little space as possible.

Built within a mountain called Storanipa, the new treatment plant processes up to 43 MLD of wastewater. HUBER supplied the bulk of the process equipment for this first stage of the project. The second stage will see the construction of a new secondary treatment facility.

“The first stage of the new Oygarden STP comprises of primary treatment. HUBER LIQUID Drum technology was selected as this equipment uses only 10% of the area of a circular clarifier. Even against inclined lamella technology the Liquid Drums was selected due to its low height. The treatment plant was built within a mountain, so accommodating taller equipment would have been costly.

To save on construction time and reduce civil works, pre-packaged above ground inlet works systems were used. All the primary sludge is dewatered in HUBER Rotary Screw Presses.

The project showcases how we can help reduce the capital cost of primary treatment facilities and fit them into dense built up areas – this project could be applied to any new or upgraded treatment system in Australia, New Zealand or the Pacific” says John Koumoukelis, CEO of Hydroflux Epco.

HUBER Liquid Drums is a horizontal drum screen fitted with a fine mesh – purposely designed to act as a primary clarifier and to remove suspended solids downstream of an inlet works. The performance is similar to or better than primary clarifiers or sedimentation tanks but only requires 10% of the real estate.

The discharge criteria for Oygarden STP were as follows:

Stage 1 Discharge Limits

  • BOD5 < 40 mg/L or 20% reduction
  • TSS < 60 mg/L or 50% reduction

The future stage 2 process shall have tighter discharge limits for TSS, BOD and Nutrients.

About the Hydroflux Group
The Hydroflux Group comprises eleven companies based in Australia, New Zealand, Fiji and the UK, providing design and build, equipment, processes and operational services in water and wastewater treatment. Hydroflux Epco specialises in municipal wastewater and sludge treatment, is the exclusive Australian representative for HUBER Technology, AEROSTRIP®, CNP Technologies, Flootech MBBR, Organica Water, and incorporates EPCO Australia.
Hydroflux Epco Pty Ltd is a member of the Hydroflux Group.

Hydroflux Epco Pty Ltd
Level 26, 44 Market St. Sydney NSW 2000 Australia
P +61 2 9089 8833 F +61 2 9089 8830
[email protected]

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