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DOI : , Vol.21, No.6, 17 ~ 26, 2013
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| Title |
| Removal of Nitrate and Phosphate in Sewage using the Ion-Exchange Resin |
| 신정필 Joeng Pil Shin , 윤성동 Sung Dong Yoon , 고인범 In Beom Ko , 전양근 Yang Kun Chun , 김오환 Oh Hwan Kim , 한정구 Jeong Ku Han |
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| Abstract |
| In this research, the ion-exchange resin was used to evaluate the removal efficiency of nitrate and phosphate from the sewage. We investigated i) the removal efficiency per different concentration of the sewage influent, ii) the regeneration efficiency of the ion exchange resin per concentration of the regeneration solution and cycle, and finally, iii) the ionic selectivity of the above ion-exchange resins. The average removal efficiency of the ion exchange resin system was 70.76%, 76.63%, 84.29%, and 86.81% for T-N, NO3-N, T-P, and PO4-P, respectively. Under the condition of the input amount of 16 L and flow rate of 1.5 L/min, the regeneration cycle of the ion exchange resin was estimated to be approximately for 7 days while the removal efficiency increased approximately for 10% when the concentration of the regeneration solution was doubled. The Ion-exchange resins, INDIONⓡ NSSR and ASM had excellent selectivity in NO3- and PO43-, respectively. However, when high concentration of NO3- was continuously input to ASM, due to the competition between NO3- and PO43-, the removal efficiency decreased. |
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| Key Words |
| Ion exchange resin, nitrate, phosphate, wastewater |
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