Prolactal
Utilisation of dairy waste with anaerobic digestion technology at Prolactal's wastewater treatment plant in Hartberg, Austria, producing 4,400 Nm3 of biogas a day.

Project overview
Biogas production
4 400
Nm3/day
Technology
InwaFerm
Our role
Our sister company, INWATECH Ltd., carried out the detailed design of the anaerobic digestion system and the biogas production, treatment and utilisation system, supplied and installed the key technology components and managed the trial operation.
01
The client
Prolactal GmbH is a dairy company based in Hartberg, Austria, producing dried milk and whey products and milk proteins. It is a world market leader in organic milk and whey powders for infant formula.
02
The facility
The system processes dairy waste with InwaFerm anaerobic digestion technology. Supplying and installing the key technology components – the mixing, heating and gas storage systems – was also part of the project. We took over the reference from our sister company when Water4All was founded in 2021 and took on its biogas business.