North Sweden Cleantech

Umeå Wastewater Treatment Plant

Within Umeå municipality there are a total of 19 wastewater treatment plants. The largest, Umeå Wastewater Treatment Plant, takes care of wastewater from households and various businesses in Umeå and surrounding villages. Every year, it receives about 13 million cubic meters of waste water, containing about 3000 tons of organic material and about 80 tonnes of phosphorus. The process of cleaning water demands a lot of energy, but the plant also produce biogas which gives 23 000 kWh per day.

Clean water
The treatment plant is dimensioned for 166 000 inhabitants (included industrial load) and can manage to purify a maximum 8 100 cubic meters of wastewater per hour. There are mechanical, chemical and biological treatment steps, which removes 95-97 % of phosphorus and organic material in the water.

Nutritious sludge
Substances removed from the waste water form a nutritious sludge which was made into pellet for 10 years. The sludge pellet showed good effect as fertilizer and soil conditioner improvement, but due to lack of demand, the pellet machines were removed and the sludge has been used as a construction material within an industrial area where leakage water can be collected and treated. Continuous communication is done to create awareness about the importance of not pour or throw any hazardous substances or garbage into the drain.

Biogas
The sludge is digested about two weeks to obtain energy in the form of biogas. The biogas consists mostly of methane (65 %) and is used in engines to produce electricity and heat. The gas production is 3000-4000 m3/day, with a total energy worth of 23 000 kWh/day (8, 4 GWh/year).

Most important environmental facility in Umeå
The treatment plant was built in the early 1970s and 2001 a digester and a pelleting plant was added for treatment of the sludge. During the years 2012-2015, the plant expanded further – increasing the capacity extensively. Two gas engines were installed to enable a more efficient use of the biogas. Considering all of the above – and the consequences if there was no treatment plant – Umeå Wastewater Treatment Plant is the single most important environmental facility in Umeå.

Town: Umeå
Find us: Övägen 37
Website: www.vakin.se
Visiting: All year
Duration: 2 hours
Languages: Swedish & English


Similar Best Practices

Brunnshög – a future to believe in

Brunnshög – a future to believe in

Everyone is talking about a smarter, more sustainable future. In Brunnshög, this future is being realized. And it is being created around the people who will live here, focusing on their future needs.

The Intelligent District Heating System

The Intelligent District Heating System

In Karlshamn a rewarding collaboration has been going on for many years between several actors who together have created a sustainable and intelligent district heating system. The system, which is controlled using the latest technology in AI, is constantly evolving to help create a future sustainable energy system.

It´s innovation through collaboration!

Sweden’s first fossil-free preschool in Gothenburg

Sweden’s first fossil-free preschool in Gothenburg

When the preschool ‘Hoppet’ in Gothenburg was to be built, the City of Gothenburg wanted to challenge and create a change in the construction industry; they wanted it to be built completely fossil-free throughout the building’s entire life cycle with regards to production, assembly and future operation.

Tvärpilen – a small residential area, big on sustainability

Tvärpilen – a small residential area, big on sustainability

In the small village, Kivik, in the southeast of Sweden, you find the new residential area, Tvärpilen, where the Beautiful, the Sustainable and the Responsible come together in perfect combination.

Fossil-free steel demonstration plant in Vitåfors (Gällivare)  – direct reduction of iron ore pellets with hydrogen

Fossil-free steel demonstration plant in Vitåfors (Gällivare) – direct reduction of iron ore pellets with hydrogen

HYBRIT’s demonstration plant in Vitåfors will demonstrate the value chain for fossil-free steel on an industrial scale. It includes production of hydrogen and of sponge iron by direct reduction with hydrogen. The plant is planned to be ready in 2026.

Fossil-free steel pilot plant in Luleå – direct reduction of iron ore pellets with hydrogen

Fossil-free steel pilot plant in Luleå – direct reduction of iron ore pellets with hydrogen

HYBRIT is conducting trials on direct reduction of iron ore pellets, using hydrogen produced by fossil-free electricity. HYBRIT is also building a pilot hydrogen storage to test the best way to store hydrogen underground.

Haraholmen – a green industrial park where sustainability is key

Haraholmen – a green industrial park where sustainability is key

Haraholmen is an industrial park where sustainability is key. The site uses renewable energy, welcomes companies with green profiles, and is a hub for resource-efficient transportation with access to roads, railways, and a deep-water port.

Markbygden 1101 – Europe’s largest onshore wind farm

Markbygden 1101 – Europe’s largest onshore wind farm

Markbygden 1101 is the largest onshore wind power project in Europe. Once completed, it will consist of up to 1101 wind turbines that together will produce up to 12 TWh per year. This is comparable with around 8% of Sweden’s electricity production.

Site East –  a climate neutral construction site

Site East – a climate neutral construction site

At Skellefteå Site East, close to Northvolt’s factory, conditions are created to create the most sustainable development project ever. By maximizing the cutting edge know-how of both Skellefteå municipality and external partners, Skellefteå Site East is a source of inspiration for the industry. Both in terms of the courage to dare to think and act in new ways around sustainability, and in working together with contractors towards a common vision.

Wood Safari – experience how creative wood ideas turns in to sustainable living environments

Wood Safari – experience how creative wood ideas turns in to sustainable living environments

The advances made in wood construction are attracting more and more attention from contractors and architects that are discovering the advantages of building in wood. In Skellefteå you can take part in something as rare as a wood safari. A learning experience in how creative wood ideas create climate-smart living environments and how sustainable building ensures that the city develops in an attractive way, in both the near and more distant future.

Skellefteå Airport – a green airport

Skellefteå Airport – a green airport

At a time when the global aviation sector is facing increasing demands to get on a sustainable flightpath, one airport in northern Sweden has gotten a head start with an extensive vision that has led them to become one of Europe’s and probably the world’s first fossil-free airport. At the same time the airport is now preparing to become a testcenter for electric powered and vertical-starting aircrafts.

Blue Green City Lab evaluates blue green solutions

Blue Green City Lab evaluates blue green solutions

In times of more extreme weather caused by climate changes the downside with dense cities with fewer green spaces and more paved surfaces is showing. Extreme heat, flooding and reduced biodiversity, we all see it. However, blue green solutions have a positive impact. Blue Green City Lab is the testbed that evaluates new and proven solutions.

My Visit Plan Favorite star