A durable and reliable solution for wastewater, Riihimäki, Finland

A durable and reliable solution for wastewater

The Weholite tanks, with an inner diameter of three metres, delivered to the Riihimäki wastewater treatment in Southern Finland will ensure that the plant keeps running, even during emergencies.
Read more about Weholite


Riihimäki, Finland
Enskilda avloppssystem
Färdigställt: 2016

The tanks installed in late 2016 are used as emergency tanks at the wastewater treatment plant of a
factory. The tanks can be brought online quickly, for example during disruptions or emergencies,” says Veli-Matti
Hakala, a Work Supervisor at Uponor. Uponor delivered two Weholite tanks, each with an inner diameter of three metres and a volume of over 200 cubic metres.
“The tanks are 30 metres long, so they are quite large. It was very important to the client that the tanks could be delivered to the site in two 15-metre parts and welded together there. The roads leading to the plant would have had
to be rebuilt to enable the tanks to be delivered at their full size. There would also have been additional transport requirements.” Uponor’s field welders took care of the welding of the tank and installed a DN/ID 2,400mm Weholite pumping station, a DN/ID1,200mm Weholite valve chamber and connecting pipings.
“The work proceeded on the agreed schedule, although changes had to be made to the solutions on site due to old structures uncovered during the excavation. The reserve tanks were installed inside decommissioned concrete reservoirs. In order to place the tanks in precisely the desired place, one of the tanks had to be slightly shortened.
The height and connection points of the pumping station also had to be modified on-site."
“The customer was highly satisfied with the outcome and the ability of the skilled installers to react quickly to the required alterations," says Veli-Matti Hakala. Installation was completed in just over two weeks.
“The tanks have been tested and have worked just as intended.”

Excellent for wastewater use

Veli-Matti Hakala says that Weholite is highly suitable for wastewater use.
“We deliver a high number of wastewater pumping stations, for example. Weholite has no risk of corrosion and is highly resistant to acids, alkalis and other chemicals. All solutions can also be customised according to the customer’s
Hakala mentions a Weholite wastewater application currently being built in a groundwater area. The Centre for Economic Development, Transport and the Environment approved Weholite as the material used on the site.
“Thanks to Weholite’s layered structure, no protective piping is required around the actual pipe, although the regulations would require one from a conventional, heavy-duty pipe in a groundwater area.”

Asennusvalmiit Weholite sailiot





Liknande projekt

En hållbar lösning för ett massa- och pappersbruk

En hållbar lösning för ett massa- och pappersbruk

Att inte använda utvändiga betongvikter var av mycket stort intresse för Nymölla eftersom de inte kunde hantera installationen av utloppsledningen själva och att arbetet kunde utföras på installationsplatsen av Uponor Infra Projektservice, var avgörande faktorer för Nymölla i val av ledning.



Stora Enso Nymölla biogasanläggning

Stora Enso Nymölla biogasanläggning

Stora Enso Nymölla Bruk i södra Sverige tillverkar massa- och träfritt obestruket papper och är det näst största papperstillverkningsföretaget i Europa. Nymölla Bruk tillhör divisionen ”Paper” och har en årlig kapacitet på 340 000 ton massa och 485 000 ton papper. Bruket startade 1962 och har 540 anställda. Pappret tillverkat av Nymölla Bruk är återvinningsbart, förnybart och biologiskt nedbrytbart. Cirka 90 % av Nymölla Bruks pappersvarumärken har miljömärkescertifiering som intygar produkternas minskade miljöpåverkan under produktens livscykel. Pappersprodukter från Stora Enso finns i hela världen.
Weholite yields savings and smoother implementation

Weholite yields savings and smoother implementation

New dry land fish farm which will produce 3,200 tonnes of rainbow trout annually is being build in Eckerö in the Åland Islands. Uponor Infra has provided design assistance and delivers the pipes and is responsible for their installation and welding.

Power boost for Stockholm’s district heating network

Power boost for Stockholm’s district heating network

Stockholm Exergi AB is an energy utility company that operates in Stockholm. It is jointly owned by the City of Stockholm and the Finnish energy giant Fortum Oyj. The company produces district heating, district cooling and electricity. Today, it supplies heat to approximately 800,000 in-habitants in the Stockholm region.
A raw water system for the new power unit

A raw water system for the new power unit

To ensure failure-free operation of a raw water system, a polyethylene-made pipeline (PEHD) with a length of approximately 9 km was installed (in mining damage conditions), of which 3 km uses the trenchless technique – relining.
A new generation biotechnology factory

A new generation biotechnology factory

The object for the largest investment in the Finnish forest industry has been completed. Metsägroup's pulp mill in Äänekoski started operations in August 2017. Uponor Infra was involved in building a new generation bio mill.
Fish farming with the smallest possible footprint

Fish farming with the smallest possible footprint

Andfjord Salmon AS, a Norwegian fish farming company, has the ambition to create a sustainable, environmentally and fish-friendly onshore facility – with the smallest possible footprint. This patented facility combines the best from both traditional ocean net-pens and land-based salmon farming. The intake and outfall lines are built with highly durable Weholite PE pipes and panels with a 100-year life span.