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A Study on the Removal of Organics and Nutrients in the Process Using Attached Biomass and Aquatic Floating Plants  

Seon, Yong-Ho (Department of Environmental Engineering, Sangji University)
Publication Information
KSBB Journal / v.23, no.4, 2008 , pp. 323-328 More about this Journal
Abstract
This study was accomplished using Anaerobic/Anoxic/Oxic biofilm reactors with fixed media and post-treatment reactor for natural purification with aquatic floating plants. The objectives of this study was to investigate the characteristics of organics, nitrogen and phosphorus removal from sewage with the HRT. The average removal efficiency of SS and $COD_{Cr}$ increases as increasing the hydraulic retention time (HRT) until 12 hr of the HRT, and it was constant over 12 hr of the HRT. The removal efficiency of them was about 93% and 89% respectively over the 12 hr of HRT. The average $BOD_5$ and $COD_{Mn}$ increases as increasing the HRT and the removal efficiency of them was 84.91 % and 76.03% respectively at the 26 hr of HRT. The removal efficiency of T-N and T-P increases as increasing the HRT until 61 hr of the HRT, and it was constant over 61 hr of the HRT. At the HRT of 61 hr, it was 70.20%, 77.86% respectively. It was found that the optimum HRT was 61 hr in case of the nutrients. Before and after experiment, the nitrogen content was similar in leaves of the water hyacinths but the nitrogen content in roots after experiment was 5.5% more than its content before experiment. It was known that the nitrogen was absorbed by the water hyacinths.
Keywords
Aquatic floating plants; water hyacinths; HRT; organics; nutrients; T-N; T-P; removal efficiency;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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