156-8 Pollutants Balance In Constructed Wetlands for Treating Hydroponic Waste Solution Containing High Nitrate From Greenhouses In South Korea.

See more from this Division: S10 Wetland Soils
See more from this Session: General Wetland Soils: II (Includes Graduate Student Competition)
Monday, October 17, 2011
Henry Gonzalez Convention Center, Hall C, Street Level
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Sung Hun Kim1, Jong Hwan Park1, A. Reum Kim1, Dong Cheol Seo2, Ju Sik Jo2, Yeong Lae Ha1 and Jong Soo Heo1, (1)Division of Applied Life Science(BK21 Program), Gyeongsang National University, Jinju, South Korea
(2)Division of Applied Life and Environmental Sciences, Sunchon National University, Sunchon, South Korea
The water pollutant balance was analogized to know treatment tendency according to the treatment time. The total influent amount of hydroponic wastewater was 0.26~0.34 m3 day-1 on the average for two years, the amount of hydroponic wastewater evapotranspiration was 15~18% in hydroponic wastewater treatment plant. In the case of COD balance, the inflow was 2.27~2.33 kg year-1 in hydroponic wastewater treatment plant. 34.4~34.8% of COD in 1st HF bed was treated. And 45.4~46.8% of COD in 2nd HF bed was treated. Therefore, the outflow of 0.43~0.46 kg year-1 in COD was 18.5~20.3% in hydroponic wastewater treatment plant. In the case of T-N balance, the inflow was 8.74~11.67 kg year-1 in hydroponic wastewater treatment plant. 21.3~24.3% T-N in 1st HF bed was treated. In 1st HF bed, 0.27~0.5% of T-N by water plant, 2.49~6.64% of T-N by filter media and 17.2~18.7% of T-N by the others were treated, respectively. And 37.5~37.7% T-N in 2nd HF bed was treated. In 2nd HF bed, 0.26~0.49% of T-N by water plant, 5.26~5.60% of T-N by filter media and 31.8~32.5% of T-N by the others were treated, respectively. Therefore, the outflow of 3.33~4.78 kg year-1 in T-N was 38.2~41% in hydroponic wastewater treatment plant. In the case of T-P balance, the inflow was 1.44~1.71 kg year-1 in hydroponic wastewater treatment plant. 62.2~63.2% T-P in 1st HF bed was treated. In 1st HF bed, 0.97~1.33% of T-P by water plant, 20.1~41.5% of T-P by filter media and 19.3~42.4% of T-P by the others were treated, respectively. 29.9~32.1% T-P in 2nd HF bed was treated. In 2nd HF bed, 0.81~1.1% of T-P by water plant, 8.3~30.4% of T-P by filter media and 0.58~20.8% of T-P by the others were treated, respectively. Therefore, the outflow of 0.1 kg year-1 in T-P was 5.8~6.9% in hydroponic wastewater treatment plant.