2008 Joint Annual Meeting (5-9 Oct. 2008): Optimum Configuration of 2-stage Hybrid Constructed Wetlands for Treating Hydroponic Waste Solution in Hydroponic Greenhouses.
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593-3 Optimum Configuration of 2-stage Hybrid Constructed Wetlands for Treating Hydroponic Waste Solution in Hydroponic Greenhouses.



Monday, 6 October 2008
George R. Brown Convention Center, Exhibit Hall E
Seo Dong Cheol1, Lim Jong Sir2, Park Woo Young2, Yoon Hae Suk3, Lee Sung Tae4, DeLaune Ronald D1, Cho Ju Sik5 and Heo Jong Soo2, (1)Wetland Biogeochemistry Institute, Louisiana State University, 275 west roosevelt st., Louisiana, LA 70802
(2)Division of Applied Life Science, Gyeongsang National University, 900 gajwadong, jin-ju, 660-701, South Korea
(3)Department of Gyeongnam-do Agricultural Research and Extension Services, Jin-ju, South Korea
(4)Department of Gyeongnam-do Agricultural Research and Extension Services, Jinju, 660-985, South Korea
(5)Department of Bio-Environmental Sciences, Sunchon National University, 315 Maegokdong, Sunchon, 540-742, South Korea
To obtain optimum configuration of 2-stage hybrid constructed wetlands (CWs) for treating of hydroponic waste solution (HWS) which was produced in greenhouse area, the study consisted of 4 combined systems such as Vertical flow (VF) – Horizontal flow (HF), VF-VF, HF-VF and HF-HF CWs. In four configurations of CWs, the treatment efficiency of pollutants from HWS under depth of HF and VF beds, HWS loading and HWSs was investigated. 2-stage hybrid CWs was in the order of 50 cm < 70 cm regardless of CWs configuration. Removal rate of pollutants under HWS loading in 2-stage hybrid CWs was in the order of 150 L m-2 day-1 °Ö 300 L m-2 day-1 £¾ 450 L m-2 day-1. Removal rate of pollutants in four configurations of CWs showed the similar results for various HWSs (cucumber, paprika and strawberry HWS), in 2-stage hybrid CWs. The optimum depth and HWS loading were 70 cm and 300 L m-2 day-1 in four configurations of CWs, respectively. Under the optimum depth and HWS loading conditions in all configurations of CWs, removal rate of BOD, SS, T-N and T-P was 86, 81, 42 and 87% for VF-HF CWs, 89, 84, 32 and 90 % for VF-VF CWs, 87, 83, 43 and 93% for HF-VF CWs, and 84, 84, 51 and 93% for HF-HF CWs, respectively. Optimum configuration of 2-stage hybrid CWs for treating hydroponic waste solution in hydroponic greenhouses was HF-HF CWs.
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