Abstract: A pulse electrosorption reaction device was constructed， in which the pulse-switching power supply was used to replace the DC stabilized power supply adopted in the traditional electro-adsorption， and the activated carbon powder was used as the adsorbent material to prepare the electrode plate. The removal rates of NO₃-N and NH₃-N in the simulated wastewater using pulse electrosorption method and direct current adsorption method were compared and results show that the removal rate of the pulse electrosorption method is higher within 60min.Taking the removal rate of NO₃-N as the index， the effects of duty cycle and frequency on nitrogen removal rate were also studied. The results show that the removal rate of NO₃-N is the highest when the duty cycle is 50% and the frequency is 10⁴Hz.

Key words: electrosorption, pulsed electric field, duty cycle, frequency, advanced denitrogenation