Source: https://tendernation.io/opportunities/01a140a8-c5ea-704d-a301-827a1578ec4b/norway-construction-work-nitrogen-purification-system-contract

closed NO

# Construction work – Nitrogen purification system, contract

[Nordre Follo Renseanlegg](https://tendernation.io/buyers/nordre-follo-renseanlegg)

Estimated value

NOK 300,000,000

Published

6 Nov 2025

Deadline

Closed

10 Dec 2025

## About this tender

The competition is for the delivery of nitrogen treatment plants as an execution contract in accordance with NS8405. A staged development of Nordre Follo treatment plant IKS was approved by the municipal councils of Ås and Nordre Follo municipality in spring 2021. The first phase of the development involves a new nitrogen treatment facility at the treatment facility site at Høyungsletta 19. Nordre Follo treatment plant has had nitrogen purification since 1997 and the new facility shall be placed in parallel with the existing nitrogen treatment plant. The new installations are detailed designed so that the experience basis from the existing facility is taken care of. The procurement ́s value is estimated to: NOK 300,000,000 excluding VAT. The volume is an estimate and is not binding for the contracting authority. See the procurement documents for further information. A draft of the tender documentation is attached to this qualification documentation. The contracting authority reserves the right to make minor, not significant changes to this basis before tenderers are invited to submit a tender. The contracting authority reserves the right to cancel the competition, i.a. in connection with budgetary coverage. This does not, in such cases, provide a basis for financial compensation. APPRENTICES: The obligation to set requirements for apprentices is considered to apply for this procurement, cf. the Procurement Act §7. See the attached seriousness terms for further information.

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## CPV classification

Construction work Construction works for sewage treatment plants, purification plants and refuse incineration plants Purification plant equipment

Source

Tenders Electronic Daily (EU) · Notice 734940-2025

[View official notice](https://ted.europa.eu/en/notice/734940-2025)

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