Abstract: The gaseous waste source of ACP100 was introduced for the difference analysis with “Activated Carbon Pressurized Adsorption”, M310 pressured storage and AP1000/VVER atmospheric pressure adsorption. It was found that the needed carbon loading of the “pressurized and activated carbon delayed decay” process decreased by 75% compared with that of the atmospheric pressure adsorption and the decay volume decreased by 92% compared with that of the pressurized storage. The radioactivity concentration of the treated waste gas decreased by 47% and 93% respectively compared with that of the M310 and AP1000. The amount of secondary waste is small, and the design value for secondary solid waste generation is 1.2 m³/a. In summary, the “pressured and activated carbon delayed decay” gaseous waste treatment process not only solves the existing technical trouble, but also has good purification effect, low secondary waste generation, small floor space, as well as good economic benefits, etc. This process can be applied and promoted in other NPPs.

Key words: pressured, activated carbon, decay, gaseous waste