Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Removal Nitrogen and Phosphorus from Wastewater using Natural Zeolite and Iron Oxide

천연 Zeolite와 산화철을 이용한 폐수 중 질소 및 인의 처리

  • Weon, Seung-Yeon (Institute of Technology and Development, Donglim C&E. Co. Ltd.) ;
  • Lee, Sang-Ill (Department of Environmental Engineering, Chungbuk National University)
  • 원성연 (동림건설기술(주) 기술개발연구소) ;
  • 이상일 (충북대학교 환경공학과)
  • Published : 2004.03.30
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Abstract

Removal of nutrients from domestic sewage or industrial wastewater is needed to protect surface waters from eutrophication. This research was carried out to remove the nitrogen (N) and phosphorus (P) from the wastewater using the iron oxide obtained from the steel industry and the natural zeolite, respectively. This research was conducted in both batch and continuous systems. The removal efficiency of the nutrients was evaluated in the batch system using the varying concentrations of zeolite and iron oxide added. The removal efficiency of N was 60% at the 8g of zeolite added. In the same condition, the removal efficiencies of N were 76% and 82% at 12g and 16g of zeolite added, respectively. Removal efficiency of P was 80% as 8g of iron oxide was added. The removal efficiency of P was correspondingly increased as the concentration of iron oxide was increased. Continuous column system was also used to evaluate the removal efficiency of N and P by the addition of zeolite and ferric oxide, respectively. Removal efficiencies of N were compared in the mixed packing, two stage, and four stage columns, respectively. The removal efficiencies (80%) of N in the separate packed columns (two and four stages) were higher than the mixed packing column (400%) after 90 hr. Whereas, the removal efficiencies of P were similar to each other in the three columns.

Keywords

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