Optimum Pre-treatment Method in Constructed Wetlands by Natural Purification Method for Treating Livestock Wastewater
2011
Park, J.H., Gyeongsang National University, Jinju, Republic of Korea | Seo, D.C., Sunchon National University, Sunchon, Republic of Korea | Kim, A.R., Gyeongsang National University, Jinju, Republic of Korea | Kim, S.H., Gyeongsang National University, Jinju, Republic of Korea | Lee, S.T., Gyeongnam Agricultural Research and Extension Services, Jinju, Republic of Korea | Jeong, T.U., Busan Metropolitan City Institute of Health and Environment Research, Busan, Republic of Korea | Choi, J.H., Korea Environment Corporation, Incheon, Republic of Korea | Lee, S.W., Gyeongnam National University of Science and Technology, Jinju, Republic of Korea | Cho, J.S., Sunchon National University, Sunchon, Republic of Korea | Kim, H.O., University of Seoul, Seoul, Republic of Korea | Heo, J.S., Gyeongsang National University, Jinju, Republic of Korea
In order to obtain optimum pre-treatment methods and improve T-N and T-P removal efficiencies, removal rates of pollutants in small-scale livestock wastewater treatment apparatus with water plant filtration bed or activated sludge tank were investigated. Based on the results from the optimum pre-treatment in small-scale livestock wastewater treatment apparatus, removal efficiencies of pollutants in livestock wastewater treatment plant with water plant filtration and activated sludge beds. The removal rates of COD, SS, T-N, and T-P in effluent were 83, 89, 63 and 87% in small-scale livestock wastewater treatment apparatus with water plant filtration bed, respectively. The removal rates of COD, SS, T-N, and T-P in effluent were 96, 95, 86 and 92% in small-scale livestock wastewater treatment apparatus with activated sludge tank, respectively. For increasing the COD, SS, T-N, and T-P removals in small-scale livestock wastewater treatment apparatus, the water plant filtration and activated sludge beds are recommended. In livestock wastewater treatment plant with water plant filtration (1∨st treatment) and activated sludge (2∨nd treatment) beds, the concentrations of COD, SS, T-N, and T-P in effluent were 39, 15, 42 and 1 mg L-¹, respectively. It was shown that the concentrations of COD, SS, T-N, and T-P met acceptable effluent quality standard for livestock wastewater. Based on the above results, the removal rates of COD, SS, T-N, and T-P in effluent were over 99.8, 99.9, 99.2, and 99.9% in livestock wastewater treatment plant, respectively.
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