In this study, the effectiveness of electrodialysis in removing inorganic arsenic from groundwater was investigated. To evaluate the feasibility of the electrodialysis, operating parameters such as treatment time, feed concentration, applied voltage and superficial velocity were experimentally investigated on arsenic removal. The higher conductivity removal and arsenic removal efficiency were obtained by increasing applied voltages and operation time. An increase of salinity concentrations in arsenic polluted groundwater exerted no effects on the arsenic separation ratios. Arsenic polluted waters were successfully treated with stack voltages of 1.8 ~ 2.4 V/cell-pair to approximately 93.4% of arsenic removal. Increase flow rate in diluate cell gave positive effect to removal rate. However, increase of superficial velocity in the concentrated cell exerted no effects on either the conductivity reduction or on the separation efficiency. Hopefully, this paper will provide direction in selecting appropriate operating conditions of electrodialysis for arsenic removal.

1. 서 론
 2. 실험 및 실험방법
  2.1 전기투석막여과 장치
  2.2 이온교환막 특성
  2.3 실험원수
  2.4 수질분석
 3. 결과 및 고찰
  3.1 처리시간에 따른 비소제거 특성
  3.2 배경이온 농도에 따른 비소제거율
  3.3 전압에 따른 비소제거 특성
  3.4 막면유속 변화에 따른 비소제거 특성
  3.5 지하수원수 내 비소제거 특성
 4. 결 론
 References

• 최수영(건국대학교 환경공학과) | Su Young Choi
• 박근영(건국대학교 환경공학과) | Keun Young Park
• 이승주(건국대학교 환경공학과) | Seung Ju Lee
• 최단비(건국대학교 환경공학과) | Dan Bi Choi
• 박기영(건국대학교 사회환경시스템공학과) | Ki Young Park
• 김희준(지우이앤이주식회사) | Hee Jun Kim
• 권지향(건국대학교 환경공학과) | Ji Hyang Kweon Corresponding author