Hamburger Hungária
Delivery, redesign, refurbishment and capacity expansion of the anaerobic pre-treatment plant for wastewater from recycled paper production, including biogas treatment, storage and utilisation.

Project overview
Treatment capacity
19 200
m3/day
Biogas production
2 000
Nm3/h
CHP plant electrical output
225
kW
Biogas holder
4 900
m3
Our role
Between 2012 and 2017, our sister company, INWATECH Ltd., built and developed the anaerobic wastewater pre-treatment plant and biogas system of the Dunaújváros paper mill in three phases.
01
The client
Hamburger Hungaria Ltd. is part of the Hamburger Containerboard division of the Austrian family-owned Prinzhorn Group. Its Dunaújváros mill produces 700,000 tonnes a year of recycled containerboard from waste paper on two paper machines.
02
The facility
2012–2013: BIOPAQ IC anaerobic pre-treatment was built with biogas treatment, for 4,800 m3/day (180,000 PE), producing 7,000 Nm3 of biogas a day, with a 225 kW CHP plant. 2015–2016: the entire anaerobic pre-treatment plant was redesigned, refurbished and expanded, including biogas treatment, under a general contract that also covered basic design and permitting. The plant now treats 19,200 m3/day (around 720,000 PE) and produces 2,000 Nm3 of biogas an hour. 2016–2017: an external double-membrane 4,900 m3 biogas holder and a 1,500 m3/h emergency flare were designed and built. We took over the reference from our sister company when Water4All was founded in 2021 and took on the industrial segment.