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http://dx.doi.org/10.17820/eri.2016.3.4.231

Phosphate Adsorption Characteristics of a Filter Medium, Adphos, and Its Efficiency by the Filtration Experiment Combined with the Vegetation Mat  

Kim, Ji Ah (Department of Applied Environmental Science, Kyung Hee University)
Joo, Gwang Jin (Department of Applied Environmental Science, Kyung Hee University)
Choi, I Song (Department of Environmental Science and Engineering, Kyung Hee University)
Chang, Kwang Hyeon (Department of Environmental Science and Engineering, Kyung Hee University)
Oh, Jong Min (Department of Environmental Science and Engineering, Kyung Hee University)
Publication Information
Ecology and Resilient Infrastructure / v.3, no.4, 2016 , pp. 231-237 More about this Journal
Abstract
The purpose of this study is to analyze phosphate adsorption characteristic of the filter media applied in water purification technology. And it is also to observe the removal efficiency of the technology that was developed by combining the purification abilities of filter media and the vegetation mat. The filter media, Adphos, is the subject of this study. The result of adsorption test shows that $PO_4{^{3-}-P}$ adsorption characteristics of Adphos is determined by the Langmuir isotherm model fitting and the $q_m$ (maximum adsorption amount) value is calculated as 1.162 mg/g. To verify the removal efficiency of the purification technology, a lab-scale reactor, including a 400 mm depth of filter bed filled by Adphos, was manufactured. Yellow flag Iris (Iris pseudacours L.) was planted on the vegetation bed and the coir-roll was used to fix the root of vegetation. The reactor ran 8 hours per day over 71 days, and the results of filtration experiment show that average removal efficiency of SS, T-N and T-P were calculated as 94%, 41% and 64% respectively. With these results, it was proved that the purification technology is highly effective. And for the long-time use, a maintenance guide is also required.
Keywords
Adphos; Filtration experiment; Langmuir isotherm model; Phosphate adsorption characteristic; Water purification technology;
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