For example, assuming the exhaust limit values of 10 mg/m3 for HCl and 50 mg/m3 for SO2, the effectiveness of the flue gas treatment system of the mass burning process should reach 98% for HCl, 89% for SO2 after mass burning, and 93% for SO2 after HCF incineration. HCF incineration requires less consumable materials for flue gas treatment because of the smaller amount of incinerated waste (calculations according to [15], Table 13).