초록
회분식 및 연속식 충전 복극전해조 사용시 인가전압, 전해시간 및 활성탄 충진고 등이 암모니아성 및 질산성 질소 제거에 미치는 영향을 검토할 목적으로 실험하였다. 회분식 충전복극 전해조에 $4{\times}8$ mesh GAC를 충전한 후 20 V의 전위에서 30분간 전해한 결과 활성탄 충진고가 80 mm인 경우 암모니아성 질소 제거효율은 전해시간 30분에서 99.9%, 질산성 질소 제거효율은 전해시간 60분에서는 97.6%이었다. 그리고 암모니아성 및 질산성 질소를 연속식으로 처리시 활성탄을 280 mm 충전한 충전복극전해조에 총 질소 농도가 30 mg/L가 되도록 조제한 질산암모늄 시료를 6.7 mL/min 속도로 주입하면서 72시간 연속전해 결과 총 질소 제거효율은 약 80% 이상이었다.
This study was conducted to investigate the effect of ammonium and nitrate nitrogen removal to applied voltage, electrolytic time and activated carbon packing height. Batch bipolar packed bed electrolytic cell reactor was packed with $4{\times}8$ mesh granular activated carbon (GAC). Afterward electrolysis was performed in 20 V for 30 min. As a result, as the filling height adjusted to 80 mm high, the removal efficiency of ammonium nitrogen was 99.9%. and as the electrolytic time varied to 60 min, the removal efficiency of ammonium nitrogen was 97.6%. and in case of continuous electrolytic treatment of ammonium and nitrate nitrogen removal efficiency of total nitrogen was over 80% in bipolar packed bed electrolytic cell reactor for 72 hours as the packing height, sample concentration and input rate of sample adjusted to 280 mm, 30 mg/L, 6.7 mL/min, respectively.
