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3 "Standard Methods for the Examination of Water and Wastwater" apha awwa wef (apha awwa wef): 4-1444145, 1998
4 "Simultaneous Removal of Phosphate and Ammonium Ions on the Zeolite Rock Modified by the Magnesium Ion Exchange Reaction" i 4 (i 4): 456-463, 1997
5 "Simultaneous Removal of Phosphate and Ammonium Ions by Adsorption-Membrane Separation Hybrid System" i 4 (i 4): 448-455, 1997
6 "Simultaneous Adsorption of Ammonium and Phosphate Ions on the Mixed Adsorbents of Zeolite/Allophane" i 2 (i 2): 100-107, 1995
7 "SBR 공정에서 폭기/교반 시간비의 변화에 따른 하수중의 질소?인 제거" 9 (9): 53-61, 2001
8 "Manufacturing of Mg-Zeolite using for Simultaneous Recovery of the N and the P from Sewage Water" the korean institute of resources recycling : 122-128, 2003
9 "Ion-exchange of Ammonium by Synthesized Zeolite NaA using Coal Fly Ash J. of Ind. Sci. and Tech Institute" 12 : 17-25, 1998