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한국형 Biofilter system의 동절기 처리효율 증진
권순국 ( Kwun Soon Kuk ),손수근 ( Son Su Keun ) 한국농공학회 2001 한국농공학회 학술대회초록집 Vol.2001 No.-
The prototype biofilter was constructed in Suwon campus of Seoul National University and monitored for temperature and treatment efficiencies during a two-year programme. During the winter, daily influent wastewater temperature averages 7.7C°; without heating in 2000 experiment, the treatment efficiencies for BOD and SS droped down to 88.7% and 68.4%, respectively. However, as increased the influent wastewater by installting a heater tank before the biofilter tank in 2001 at the same period (Feb. 9-Mrach 30) of 2000 experiment, average daily influent temperature which was 7.2 C° increased to over 18.2 C°. As a result, effluent quality remains excellent through the winter and even the post winter with BOD and SS values close to less than 10 mg/L. Nitrification follows temperature patterns. However, there was no improvement of treatment efficiency in total nitrogen (T-N) was observed by increasing temperature.