Pumping for a new town
Grundfos is to pump sewage and stormwater from Ørestad, a new town in the Copenhagen suburbs.
A new town is fast rising in the suburbs of Copenhagen. Ørestad is being built to accommodate the expected expansion and growth in the Øresund Region when the Øresund Bridge opens in July. The bridge will provide the first fixed link between Denmark and Sweden.
Ørestadsselskabet, which is owned by the Municipality of Copenhagen and the Danish Ministry of Transport, is responsible for the project.
Pumping for Ørestad
Grundfos has built three large pumping stations in the area. Two are for pumping wastewater, while the remaining one will handle stormwater. Ørestadsselskabet has appointed Danish consulting engineering firm Rambøll to act as consultant in developing the pumping stations.
In its capacity as subcontractor, Grundfos has supplied and installed two complete pump installations for the wastewater stations in both Ørestad City and Ørestad South.
The City pumping station has been built as a two-storey, underground basement. Two dry pit installed Grundfos AP100.150 13kW sewage pumps draw from separate inlet sumps with a capacity of approximately 75l/sec per pump.
In addition, each sump has been equipped with a submerged Grundfos AP100.100 2.4kW pump on an auto-coupling system with an ejector, which prevents impurities in the wastewater from settling and the formation of odours.
Concrete pumping station
A concrete pumping station has been set up to service Ørestad South. Grundfos has supplied and assembled two submerged high-pressure APG.50 6.5kW grinder pumps and equipped the sump with a 3 x 3m superstructure.
The large volumes of stormwater collected in Ørestad will be channelled to a large, two-storey underground pumping station from where it will be pumped to a new drainage channel running parallel to Ørestad’s main highway.
Grundfos has supplied and installed two dry pit installed AP80.150 25kW drainage pumps in the stormwater station with a capacity of approximately 100l/sec per pump. For handling day-to-day dry weather conditions, a single dry pit installed Grundfos AP70.80 1.3kW pump has been installed. Grundfos has also supplied a complete oil separator for this pumping station.
All pump installations have been supplied and assembled complete with stainless steel/acid-proof pipes in dimensions up to DN300. Installation work has also included valves and flowmeters. Over and above supplying and installing the actual pumps, Grundfos has been responsible for the plumbing and ventilation work in all of the pumping stations.
Ørestad – a whole new town
Ørestad is being developed on a 600m wide, 5km long strip of land a short distance from the centre of Copenhagen and close to the city’s international airport. Once fully developed, Ørestad’s 310 ha total area will be primarily used for commercial purposes, although residential, cultural and retail uses will also be prominent. Altogether an anticipated 50,000 jobs and 20,000 residents are expected to bring Ørestad to life.
The infrastructure to make this all possible — roads, the Metro, a drainage channel and the sewerage system — has been budgeted to cost DKK1.3Bn ($170M) and is now well in place. Much of the land has also been made ready for building, so the actual construction phase is ready to start. However, it will be 30-40 years before Ørestad is fully developed.
Queen Margrethe II of Denmark and King Carl XVI Gustaf of Sweden will open the Øresund Bridge on 1 July. The Prime Ministers of the two countries, Göran Persson of Sweden and Poul Nyrup Rasmussen of Denmark, will also be present at the opening ceremony.