A biofilter filled with sintered glass media and wood bark media were developed and tested. Acetic acid and ammonia added in brewery wastewater were used as an artificial odor source. The Reynolds’ number (NRe) was below 130 in the loading range of 3~5 m3/m2-min, while the pressure drop was less than 6 mmH2O. The average removal efficiency of acetic acid was 87.6% and 71.5% at surface loading rate of 3.1 m3/m2-min and 4.4 m3/m2- min, respectively. The acetic removal capacities were 8.1~14.3 g/m3-min with the mass loading rates of 11.7~22.4 g/m3-min, indicating very high performance. However, the acetic removal capacity was sharply decreased at the mass loading rate of 20 g/m3-min. The average removal rate of ammonia was 38% and 25% at the surface loading rates of 3.1 m3/m2-min and 4.4 m3/m2-min, respectively. The ammonia removal capacity was 0.47~0.88 g/m3-min in the range of 11.7~22.4 g/m3-min mass loading rates. The intensity of complex odor was also decreased based on the findings in the measurement using the direct olfactory method and the GC analysis.

• 석종혁(인하공업전문대학 화공환경과) | Jonghyuk Seok (Department of Chemical and Environmental Technology, Inha Technical College) Corresponding author