Efficiency of waste processing in the MBT system.

In the professional literature there is no information on the efficiency of waste treatment in MBT (mechanical-biological waste treatment) systems in Poland. This knowledge is currently particularly important as it will decide on the role of the MBT system in the new reality of the circular economy, and consequently on the direction and necessary scope of modernization of these systems. The article presents a series of technical and technological indicators designated for one of the recently commissioned MBT plants against the background of minimum, maximum and average values of these parameters set for 20 systems with various MBTs covered by the research as part of the review of technological solutions used in Poland, made in 2015. For the system in Marszów, respectively in 2017 and 2018, the average value of the ratio of underscreen to overscreen fraction was 1.4; the losses of mass in the biological treatment process amounted to 28.7 and 29.4%; energy demand - 46.6 and 44.3 kWh/Mg; the aeration index - 16.7 m3/(Mg h); the average waste recycling rate - 15.2 and 17.3%; the share of fuel fraction recovery - 11.6 and 16,6% and the share of waste sent to landfill - 33.2 and 32.3%.