156-11 Evaluation of Purification Efficiency In Constructed Wetlands for Treating Livestock Wastewater.



Monday, October 17, 2011
Henry Gonzalez Convention Center, Hall C, Street Level

Jong Hwan Park1, Sung Hun Kim1, A. Reum Kim1, Dong Cheol Seo2, Ju Sik Jo2, Jong Soo Heo1 and Yeong Lae Ha1, (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
To obtain optimum conditions were investigated in small-scale livestock wastewater treatment apparatus under various conditions (filer media, configuration method, and livestock wastewater loding). The optimum filter media in small-scale livestock wastewater treatment apparatus for treating livestock wastewater were studied. Removal rates of pollutants under different filter media were in the other of coarse sand broken stone > zeolite > calcite for COD, zeolite >> broken stone coarse sand calcite for T-N, and calcite > coarse sand broken stone zeolite for T-P. Based on the above results, the optimum filter media was coarse sand in small-scale livestock wastewater treatment apparatus. To obtain optimum configuration method and livestock wastewater loading in small-scale livestock wastewater apparatus by natural purification method for treating livestock wastewater, the small-scale livestock wastewater apparatuses were constructed with 9 kinds of combined systems such as aerobic bed(ae)-anaerobic bed(an), ae-ae, ae-anoxic bed(ox), an-an, an-ae, an-ox, ox-ae, ox-an and ox-ox livestock wastewater treatment apparatuses. Under different configuration methods, the removal rate of COD in Ae-Ae and Ae-An livestock wastewater treatment apparatus was higher than that in other configuration methods. The removal rate of T-N in Ae-An livestock wastewater treatment apparatus was higher than that in other configuration methods. Removal rates of SS and T-P were not different regardless of configuration methods in small-scale livestock wastewater treatment apparatus. Under different livestock wastewater loading, the removal rates of pollutants were higher in the order of 50 L m-2 day-1 100 L m-2 day-1 > 200 L m-2 day-1. Therefore, optimum configuration method was Ae-An livestock wastewater treatment apparatus, and optimum livestock wastewater loading was 100 L m-2 day-1 in small-scale livestock wastewater treatment apparatus.
See more from this Division: S10 Wetland Soils
See more from this Session: General Wetland Soils: II (Includes Graduate Student Competition)