Porin ja Harjavallan välille valmistui massiivinen jätevesien siirtoviemäri.
Renovation of reinforced concrete sewer - relining method, Chełm, Poland
Renovation of reinforced concrete sewer - relining method
In early 2013, the Municipal Services Office in Chełm launched a sweeping renovation project of the city’s water supply and sewage network. Worth 24 million euros and partly financed from the EU’s Cohesion Fund, the project is set to solve a number of problems that have been plaguing the city’s water supply and wastewater treatment system for some time.
The main tasks include expanding the existing water supply and sewage networks to cover the greater Chełm area, and the modernisation of the Bieławin wastewater treatment plant. The project also called for the renovation of a 1.5 kilometre section of an old sewage pipeline passing between Lubelska Street and the Bieławin treatment plant.
Work on-site began in January 2013, with the construction of temporary working chambers and the hydrodynamic cleaning of the old concrete channel. Next, the new PEHD pipes were laid out at surface level, welded together into longer sections and pulled into the host pipeline. The pipes were manufactured and delivered in 12.5 metre sections and welded into sections ranging from 20 to 150 metres in length. The welding was carried out by welders from PBRSP Sp. z o.o., who had been trained beforehand by Uponor Infra service staff. Uponor Infra also lent out a welding machine for large-diameter piping. After a considerable section of the pipeline had been installed, bottoms were crafted by slicing off the top portion of the piping at selected intervals. The annular space between the host pipe and the new liner was filled with specially formulated, impact-resistant grout able to withstand in excess of 5 MPa. In all, between February and August 2013 Uponor Infra delivered 1,419 metres of Weholite DN 800–1,000 pipes to the installation site. An additional 216 pieces of short VipLiner DN 560 modules in 0.5-metre sections were delivered for the renovation of the pipeline at the river crossing.
The renovation provided for a leak-proof and reinforced channel structure. Resistance to wastewater flow has been minimised and the network’s parameters have considerably improved. The pipeline is once again fully operational, with its life-cycle extended by at least several decades.
Miejskie Przedsiębiorstwo Gospodarki Komunalnej Sp. z o.o. in Chełm
Przedsiębiorstwo Bezwykopowej Renowacji Sieci Podziemnych Sp. z o.o. in Kielce
Kuokkalaan avattiin marraskuussa 2013 kehäväylä. Väylälle asennettiin 2 kilometriä Uponorin IQ-hulevesiputkea, 250 kaivoa ja 5 kilometriä salaojaputkea.
Lahti Energia käyttää työmaillaan ensimmäisenä Suomessa kaariputkia. Kokemukset ovat olleet erittäin hyviä.
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Samaan aikaan toisaalla, keskustasta Launeelle johtavalla kaukolämpölinjalla operoidaan hieman tuhdimpien DN 400 -putkien kanssa. Täälläkin sama juttu. Aivan kuin kaikki putket eivät olisi ihan suoria?
Butt welding by night of 900 mm pipes ensures stable operation of a district cooling solution in Copenhagen Harbour.
Rapid action was critical when a sewage collector broke in Warsaw, Poland, causing a massive waste spill into the Vistula River. Uponor Infra’s crew worked 24 hours a day in order to stop the pollution of the river. A temporary pipeline was produced, delivered and connected in just eight days.
September 2018 saw the launch of the project for a stormwater drainage system in Rzeszów, almost 26 kilometres long, in the residential District of Budziwój, which partially coincides with the floodplain of the River Wisłok. One of the elements of this system is the retention canal. The project, scheduled for delivery by May 2020, will help to finally solve flooding problems which have been plaguing the residents of this region of Poland.
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Construction of storm water collectors in Nowe Polkowice is one of the stages of a big investment concerning the drainage of the district.
A sea outlet of treated wastewater was initiated in Swarzewo. It is yet another of the many environmentally friendly projects that have recently been carried out in Poland where PE pipes were used.