Selection of Optimum Filter Media in Small-Scale Livestock Wastewater Treatment Apparatus by Natural Purification Method
2011
Kim, A.R., Gyeongsang National University, Jinju, Republic of Korea | Kim, H.C., Gyeongnam National University of Science and Technology, Jinju, Republic of Korea | Seo, D.C., Sunchon National University, Sunchon, Republic of Korea | Park, J.H., Gyeongsang National University, Jinju, Republic of Korea | Kim, S.H., Gyeongsang National University, Jinju, Republic of Korea | Lee, S.T., Gyeongsangnam Agricultural Research and Extension Services, Jinju, Republic of Korea | Jeong, T.U., Busan Metropolitan City Institute of Health and Environment, Busan, Republic of Korea | Choi, J.H., Korea Environment Corporation, Incheon, Republic of Korea | Kim, H.O., University of Seoul, Seoul, Republic of Korea | Cho, J.S., Sunchon National University, Sunchon, Republic of Korea | Heo, J.S., Gyeongsang National University, Jinju, Republic of Korea
In order to develop livestock wastewater treatment technology by natural purification method, 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 greater than zeolite greater than calcite for COD, zeolite much greater-than broken stone ≒ coarse sand ≒ calcite for T-N, and calcite greater than 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 meet acceptable effluent quality standard for livestock wastewater and to improve T-N and T-P removal efficiencies, removal efficiencies of pollutants in small-scale livestock wastewater treatment apparatus with mixed filter media were studied. The removal rates of COD, SS, T-N and T-P in effluent were 84, 94, 65 and 98% in small-scale livestock wastewater treatment apparatus with mixed filter media, respectively. For increasing the T-N and T-P removals in small-scale livestock wastewater treatment apparatus, the mixed filter media are recommended.
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