Biobed® EGSB Technology for Paper Processing Plant

Dunapack Ltd. is a major player in the Hungarian pulp and paper industry. The manufacturer of quality paper products extended its production site in Dunaújváros by almost tripling its capacity to 350.000 tons per year. Upgrading the aerobic treatment steps, the project scope included anaerobic treatment for the production of corrugated boxes from recycle paper. Biothane carried out the project in partnership with the the local business unit Veolia Water Solutions & Technologies Magyarország Inc.

The pretreated water is supplied with natural acidification to the acidification tank where it is mixed to assure homogeneous integration of the liquid contents. The water is then pumped into a conditioning tank in which the pH-value and nutrients are regulated.

In the anaerobic treatment step, the water passes through a bed of granular biomass in the Biobed® EGSB reactors where the conversion of COD takes place. The design COD removal efficiency is 75%. Surplus biomass, produced in the treatment process, is discharged to the sludge tank.