Possibilities for wastewater reuse in Duna Refinery

Developments aiming at the reduction of water consumption in the past decades and the total reconstruction of the wastewater treatment system in Duna Refinery completed in 2005 have resulted in the compliance of the quality of discharged wastewater even with the strictest Hungarian and EU. regulations.

The specific freshwater consumption of the Duna Refinery however, exceeds the benchmark value of the refineries having the most effective water management and also the specific wastewater production is above the
1m3 wastewater discharged/tons of processed crude limit required by the environmental authorities. (1.4 – 1. 6 at present)
The exceeding of the above limit penalty, the so called “dilution fine” has to be paid and of course, paying the Environmental Burden Fee which is proportional to the quantity of discharged pollutants is also an obligation. The treatment costs of the industrial water are increasing so, taking into account all the above the refinery decided to partially reuse the treated wastewater.
In the present article technologies applicable for the recycling/reuse of industrial wastewater are described together with the objectives and technical scope of the wastewater reuse project with the successful accomplishment of which Duna Refinery could further increase the efficiency of its water management.

György Isaák, Péter Söjtöri, Mrs. Reiter Edit Kondor, Mrs. Börzsei Éva Györy