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DOI : ,    Vol.5, No.3, 21 ~ 30, 1997
Title
Treatment of Piggery Wastewater by Anoxic/Oxic Biofilm Process without Recirculation
한동준Dong Joon Han,임재명Jae Myoung Rim
Abstract
This research aims to develop biofilm process for the organic and nutrient removal of the piggery wastewater. The four stage anoxic-oxic biofilm process was performed without recirculations of internal and sludge. In summery, the results are as follows : 1) The total removal rates of TCOD and SCOD were 94.8 percent and 92.8 percent at the influent volumetric loading rate of 0.4 ㎏COD/㎥·d, respectively. 2) The total nitrogen removal was affected by the temperature and the loading rate. The removal rates of total nitrogen were 85 percent and 67 percent at the influent volumetric loading rates of 0.08 ㎏N/㎥·d and 0.53 ㎏N/㎥·d, respectively. 3) Autooxidation by the organic limit was a cause of the phosphorus release in the aerobic biofilm process. And the phosphorus removal was affected by the nitrite build-up.
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