Treatment of gas from the vent of a fine chemical plant using a pilot-scale biofilter

파일럿 규모 바이오필터를 이용한 정밀화학공장 배출가스의 처리

  • Ryu, Hee-Wook (Department of Chemical and Environmental Engineering, Soongsil University) ;
  • Lee, Tae-Ho (Research Institute of Biological and Environmental Technology, Biosaint Co.) ;
  • Park, Chang-Ho (Department of Chemical Engineering.Green Energy Center.Industrial Liaison Research Institute, Kyung Hee University)
  • 류희욱 (숭실대학교 환경화학공학과) ;
  • 이태호 ((주)바이오세인트) ;
  • 박창호 (경희대학교 공과대학 화학공학과.그린에너지센터.산학협력기술연구원)
  • Published : 2009.02.28

Abstract

A pilot-plant biofilter (1750 mm W ${\times}$ 2750 mm L ${\times}$ 2000 mm H) packed with polyurethane foam (20 mm W ${\times}$ 20 mm L ${\times}$ 20 mm H) was installed in an fine chemical plant emitting gas streams containing ethyl alcohol, ethyl acetate, and dichloromethane. The biofilter was successfully operated for 30 days under highly fluctuating incoming concentrations (maximum 3500 ppm) at a residence time of 36 and 60 sec. Both ethyl alcohol and ethyl acetate were removed more than 95%, but dichloromethane removal was less than 50%. Malodor was also removed more than 90% from 17 days after start up.

본 연구는 폴리우레탄 입방체 (20 mm W ${\times}$ 20 mm L ${\times}$ 20 mm H)를 담체로 사용하고 자동교반장치가 장착된 pilot-scale 의 바이오필터 (1750 mm W ${\times}$ 2750 mm L ${\times}$ 2000 mm H)를 정밀화학공정 현장에 설치하여 30 일간 막힘 현상 등 제반 문제없이 성공적으로 가동하였다. 정밀화학공정에서 발생하는 가스에 함유된 ethyl alcohol, ethyl acetate 및 악취의 제거효율이 각각 95%, 95% 및 90%이었다. 반면 dichloromethane은 체류시간이 60초로 길어진 이 후에도 50% 이하에 머물렀다. 전체 데이터 중에서 유입공기내의 VOC 농도가 600 ppm이하인 조건인 경우만 따로 보았을 때 체류시간 36${\sim}$60초의 가스공급조건에서 ethyl alcohol은 운전초기부터 91%를 전후한 제거율을 보였고, 체류시간 60초에서는 고농도 유입조건에서도 95%를 상회하는 제거율을 보였다. Ethyl acetate 는 초기에는 제거효율이 낮았으나 체류시간이 60초로 길어졌을때 95%전후의 높은 제거효율을 나타내었다. 악취 또한 90% 전후한 높은 제거율을 나타내었다. 유입가스의 농도가 심하게 변화하고 순간적으로 고농도 (최고 3500 ppm)로 유입됨에도 불구하고 매우 높은 제거율 (1038 $g/m^3{\cdot}h$)을 나타냄으로서 본 연구에서 사용한 pilot-scale 바이오필터의 성능이 우수하다는 것을 입증하였다.

Keywords

References

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