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Kiertokaari Oy

Contact Information

Markku Heinonen
044 703 3971


Kiertokaari Oy


Kiertokaari Ltd. (previously Oulun Jätehuolto Ltd.) is a municipal company owned by eight municipalities. Operations cover totally 13 municipalities where there are about 300 000 inhabitants. Kiertokaari organises municipal waste management as stipulated by law and offers its services for companies, too. In its last year of operation, Kiertokaari reached 18 million euro turnover. Today the company employs 25 permanent workers.

In Rusko waste treatment centre, industrial waste treatment is available for bulky mixed household waste, construction waste, liquids, biowaste and oily water. The centre houses collection points for recyclable materials and hazardous waste and offers composting services for oil contaminated soil.

Kiertokaari purchases the processing service for combustible solid municipal waste from Oulun Energia. Since 2012, combustible solid municipal waste has been transported from properties directly to Laanila Eco Power Plant to be utilised as energy in industrial process.

The development of our operations is based on circular economy. We hope to create business models where, for example, secondary flow is circulated back to production. Good example of our achievements is the use of biogas, collected since 1998, as an energy source for ourselves but also for industry. Two local laundry companies use our biogas for heating the water. The utilisation of biogas as transport fuel started in September 2017. Cooperation contract on the treatment of biowaste was drawn up with Gasum Biotehdas Ltd., a private company, and since June 2015 all biowaste collected in our operating area has been treated by anaerobic digestion process. We take part in The Six City Strategy (6Aika) in order to test in real life circular economy cooperative projects in the city of Oulu.

Field of Operation

Waste Management

Offices in Finland

Head office and Rusko waste treatment centre: Ruskonniityntie 10, 90620 Oulu, Regional drop-off-points in several counties: Hailuoto, Ii, Kempele, Liminka, Muhos, Pudasjärvi, Siikajoki, Simo, Tyrnävä and Utajärvi

Turnover of the Company

18 M€



Open Positions

Summer trainee positions in customer service and waste centre operations

Degree Programme


Year of Study

1, 2, 3, 4, 5, n


Other Relevant Information


Open application (with CV as attachment), in Finnish or English

Teknillinen tiedekunta Tieto- ja sähkötekniikan tiedekunta    Teekkariyhdistys