This paper presents the pilot testing results of multipollutant control from pulverized coal-fired boiler OP-430 (317 MWth) performed at a pilot plant located at the Wroclaw Heat- Power Station, Poland. The experimental results include sulfur dioxide (SO2), nitrogen oxides (NOx) and mercury (Hg) emissions control. Flue gases were taken from boiler OP-430 and were dedusted in the electrostatic precipitator before the installation. The pilot plant is the multipollutant control reactor simulating conditions existing in the real dry or semi-dry flue gas desulphurization systems and consists of three sequential tubular columns (the first column is a humidifier then two are sorption columns) followed by the fabric filter. The main goal of this research was oxidation of elemental mercury (Hg0) to the ionic form (Hg+2) and NO to NO2, N2O5 and sorption of reaction products on the alkaline sorbent. Cheap and easy available chlorine and non-chlorine oxidizers like: sodium hypochlorite (NaOCl), calcium hypochlorite (Ca(OCl)2), hydrogen peroxide (H2O2), ozone (O3) and alkaline sorbent – Ca(OH)2 were used. Products of reactions and non-reacted sorbent were captured on the fabric filter. The conducted research confirmed the possibility of nitrogen oxides and mercury emission reduction by process oxidation of Hg0 and NO and sorption oxidations' products and SO2 on fabric filter with Ca(OH)2 layer. The research results showed very high removal efficiencies of Hg, NOx and SO2 - below European emission limitation after 2016 year.