A pilot-scale pulse corona induced plasma chemical process (PPCP) reactor for controlling gas-phase dioxins and NO (x) simultaneously is installed in a garbage incineration plant. The flow rate of the sampled flue gas is 5,000 Nm(3)/h (N: standard state) in maximum at the PPCP reactor, which consists of 22 wire-cylinder electrodes and is energized by a 50 kW nanosecond pulse high voltage generator. With an applied plasma energy density of 2.9-6.1 Wh/Nm(3), the decomposition efficiency for dioxins is 75-84% based on TEQ (toxic equivalents); the conversion efficiency of NO to NO2 is similar to 93% at maximum. The flue gas treated by the PPCP reactor is introduced at a rate of 50 Nm(3)/h to a wet-type chemical reactor, which uses an aqueous solution of sodium sulfite (Na2SO3). More than 90% of NO (x) is reduced to nitrogen, with negligible byproducts such as NO2 (-) or NO3 (-) ions left in the solution.