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GAJA – Gas and composting station
GAJA, the gas and composting station is intended for the reuse of organic household waste from the Greater Reykjavík Area.
The station will process up to 36,000 tonnes of household waste per year.
Project overview
Based on Sorpa’s plans, it will be possible to double the station’s capacity if necessary. It is expected that over 95% of the household waste that arrives at Sorpa’s receiving and sorting plant in Gufunes will be reused, in one way or another, when the station is completed.
The station consists of a reception facility for waste, a processing room and ten ripening chambers for organic waste, as well as tanks for making landfill gas.
Technical solutions come from Aikan/Solum AS in Denmark. The architects for the development of the project were Batteríið Architects and Mannvit has managed the tendering process. Construction was negotiated with Ístak, after a turnkey tender.
Verkís supervised construction, which included supervision of earthworks and construction works, supervision of the installation of gas production tanks and machinery, supervision of the installation of electrical and control equipment, and supervision of safety and environmental issues during construction.
36,000 tonnes of household waste, production of 3 million cubic metres of methane gas and 10-12,000 tonnes of soil improvers, floor area 12,000 square metres.
95%
Of the household waste
3mm
Cubic metres of methane gas
12000tonn
Soil improvers
The Challenge
The GAJA Gas and Composting Station was developed to transform organic household waste from the Greater Reykjavík Area into valuable renewable resources, supporting Iceland’s transition towards a circular economy. The project required the construction and installation of a highly specialised waste treatment facility capable of processing large volumes of organic waste safely and efficiently.
Our Solution
Verkís provided comprehensive construction supervision throughout the project, overseeing civil works, earthworks, the installation of biogas production tanks, process machinery, electrical and control systems, as well as health, safety and environmental management during construction. Our multidisciplinary supervision helped ensure the successful delivery of this technically complex waste treatment facility.
The Result
Designed to process up to 36,000 tonnes of organic household waste annually, GAJA is capable of producing approximately 3 million cubic metres of renewable methane and 10,000–12,000 tonnes of compost each year. The facility enables more than 95% of household waste received by Sorpa to be recovered or reused, making it a major milestone in Iceland’s circular economy and sustainable waste management strategy.
Technical information
Location:
Álfsnes, Reykjavík
Size:
36,000 tonnes
Project period:
2018 – 2020
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