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http://dx.doi.org/10.17820/eri.2016.3.3.201

Comparisons of Regeneration Methods Using Physical and Chemical Treatment for Phosphate Removal Restoration of Filter Media  

Kim, Ji Ah (Department of Applied Environmental Science, Kyung Hee University)
Choi, I Song (Department of Environmental Science and Engineering, Kyung Hee University)
Oh, Jong Min (Department of Environmental Science and Engineering, Kyung Hee University)
Kim, Won Jae (Environmental and Plant Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Park, Jae Roh (Environmental and Plant Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Ecology and Resilient Infrastructure / v.3, no.3, 2016 , pp. 201-206 More about this Journal
Abstract
The purpose of this study is to find the regeneration method of filter media using physical and chemical treatment for restoration of phosphorus adsorption ability. The filtration material used in this study is called Adphos. In an experiment of heating treatment, re-used filter media is heated to a high temperature before the adsorption test. The results show that the $PO{_4}^{3-}-P$ adsorption capacity is in the range of 0.0021 - 0.0030 mg/g and the removal efficiency is in the range of 26.1 - 39.4%. In the experiment of acid or basic treatment, re-used filter media is exposed to a different pH condition before the adsorption test. The results show that the $PO_4^{3-}-P$ adsorption capacity is in the range of 0.0010 - 0.0066 mg/g and the removal efficiency is in the range of 15.8 - 87.1% after the acid treatments which have pH values of 1 - 5. However, after the basic treatments which have pH values of 8 - 11, the results show that the $PO{_4}^{3-}-P$ adsorption capacity is in the range of 0.0018 - 0.0034 mg/g and the removal efficiency is in the range of 26.7 - 48.0%. In an experiment of chemical treatment using NaCl, re-used filter media was exposed to a different NaCl concentration before the adsorption test. The results show that the $PO{_4}^{3-}-P$ adsorption capacity is in the range of 0.0036 - 0.0050 mg/g and the removal efficiency is in the range of 50.5 - 71.1%. In conclusion, chemical treatment using NaCl shows a high recovery probability of phosphorus adsorption ability of filter media.
Keywords
Acid treatment; Adsorption; Adphos; Heating treatment; Filter media; Regeneration;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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