To research the regenerative process of the activated carbon adsorbing organics by discharge plasma

due to the fact that non-thermal plasma could efficiently produce oxidative active particles

we explored the regeneration of granular activated carbon（GAC） saturated with dibutyl phthalate（DBP） by high frequency dielectric barrier discharge（DBD） plasma. Moreover

we investigated the influences of discharge parameters（such as voltage

frequency

discharge space）

reaction time

water content

and quantity of GAC

on regeneration. The results show that moderately increasing the voltage or frequency and water content are in favor of regeneration effect. On the contrary

excessively increasing the voltage or frequency and dry state will depress the regeneration effect. In conditions of system voltage 10 k V

frequency 10 k Hz

the discharge space 10 mm

the regeneration rate can exceed 80% for 2 g GAC with 45% water content. After 3 times regenerated

the burn-off degree is less than 5%

and the regeneration rate is more than 70%

respectively. The number of activity particles

GAC pore collapse degree

active particles（such as O3

et al.） by thermal decomposition are important factors for the regeneration rate.