Design, construction and test operation of a new WwTP with the capacity of 4,300 m3/d and 23 t COD/d (approx. 240,000 PE), as the main contractor, responsible for the results. A 6.5 m diameter and 24 m high BIOPAQ IC anaerobic reactor provides the paper industry technology wastewater treatment. As part of the facility, new chemical feed lines, as well as biogas desulphurization, wastegas treatment systems were also set up, and the existing gas handling and transmission lines were also expanded.