• 청정기술
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• 제9권1호
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• pp.37-42
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• 2003

Biofiltration was successfully applied to treat a mixture of volatile organic compounds(benzene, xylene) from contaminated air stream. Immobilized Ps. oleovorans biofilter was evaluated for its value in simultaneous removal of benzene and xylene from waste air stream. The variety of operating conditions were tested to evaluate important factors such as space velocity, pH, water content, etc.

• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 1999년도 추계학술대회 논문집
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• pp.447-448
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• 1999

현재 우리나라는 공단지역에서 발생하는 VOCs(휘발성 유기화합물) 및 악취의 처리에 대한 연구개발 및 기존기술이 매우 취약한 실정이며, 일부 화학공장에서는 축열식 연소장치나 촉매연소장치를 설치하여 운전하고 있지만, 유지비(보조연료비)가 많이 소요되어 제대로 가동하지 못하는 경우가 있다. 대부분 제조업체의 경우, 활성탄 흡착탑을 설치하여 운영하지만, 화학공장에서 발생하는 포름알데히드, 스티렌 등과 같은 일부 물질은 흡착탑 내부에 타-르 같은 물질이 침적하고, 활성탄에 의한 흡착율이 낮으며, 저농도에서도 악취가 발생하므로 이러한 저농도 VOCs 물질들의 처리에 Biofilter를 적용하여 처리가능성을 조사하였다.(중략)

• KSBB Journal
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• 제18권1호
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• pp.30-34
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• 2003

A bacterial strain isolated from a compost-packed biofilter after 100 days of operation was identified as Rhodococcus pyridinovorans PYJ-1, with a similarity of 99%. This strain removed benzene, toluene and m-xylene (BTX) at 2~30 mg/L within 6~20 hrs in batch cultures. Optimum pH and temperature for BTX removal were pH 7 and $32^{\circ}C$. This strain also removed a mixture of BTX at component concentrations of 2~5 mg/L.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2001년도 학술발표회 발표논문집
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• pp.501-504
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• 2001

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 $7.7C^{\circ}$; 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 ($Feb.\;9{\sim}Mrach\;30$) of 2000 experiment, average daily influent temperature which was $7.2C^{\circ}$ increased to over $18.2C^{\circ}$. 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.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2001년도 학술발표회 발표논문집
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• pp.431-434
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• 2001

This study was carried oui to investigate tile filtering performance of using fresh compost as a biofilter. Three biofilter vessels were made using fresh compost as a biofilter media. A mixtures of dairy manure, soy sludge, rice hulls and sawdust were composted in a pilot scale reactor of 605L to generate tile ammonia emission. The ammonia emission from the compost reactor was passed through three biofilters and collected in the boric acid trap to measure the ammonia emission. Filtering performance was influenced by the depth of biofilter media. Efficient filtering effect was acquired for the depth above 40 cm.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2004년도 학술대회지
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• pp.85-106
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• 2004

Styrene as volatile organic compounds(VOC) has come under strict regulatory control as they cause serious health and environmental problems. Biofiltration offers a number of economical and environmental advantages over conventional technologies, such as incineration, catalytic adsorption, and chemical scrubbing. In this presentation, recent progresses on the development of lab-scale biofilter for the treatment of gas-phase styrene are reviewed, The potentials of commercialization of biofilter systems are also discussed.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 추계학술발표대회 및 bio-venture fair
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• pp.516-519
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• 2000

암모니아와 황화수소를 동시 제거하기 위한 biofilter가 연구되었다. 암모니아 제거의 경우 공탑속도 30초에서 유입 암모니아 농도 80 ppmv까지 100 %의 제거율을 달성하였다. 암모니아와 황화수소의 동시 제거의 경우 공탑속도 30초에서 유입 황화수소 농도 40 ppmv와 암모니아 농도 80 ppmv가 제거율 100 %로 처리되었고 이 경우 pH의 변화가 암모니아의 산화에 매우 큰 영향을 미침을 알 수 있었다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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• pp.117-121
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• 2001

The present study has been conflicted to verify the applicability of tire powder and food waste compost as biofilter materials to degrade volatile organic compounds. Batch and column tests were performed to determine the optimum ratio of tire powder to compost and the appropriate mixing type of two materials for removal of the selected VOCs, i.e., benzene, ethylbenzene, PCE, and TCE. According to batch tests, tire powder and compost mixture had faster removal rate than the compost. The biofilter column filled with tire powder and compost showed better VOC removal efficiency than that filled with only tire powder. In this study, the best removal rate was observed in the sandwich type column test of which the tire : compost weight ratio was 1:2

• 한국환경과학회:학술대회논문집
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• 한국환경과학회 2005년도 추계 학술발표회 발표논문집
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• pp.72-74
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• 2005

활성탄/폴리우레탄을 접목하여 복합담체를 개발하고 이를 biofilter 담체로 충전하여 기상스틸렌의 제거 특성을 살펴본 결과, EBCT 200 sec일 때 유입농도 200 ppm의 고농도에서도 100%의 제거율을 보일 뿐만 아니라 스틸렌의 유입농도를 150 ppm으로 공급하여 EBCT를 75 sec 까지 낮추어 운전하여도 80% 이상의 높은 제거율을 보였다. 또한 본 연구의 활성탄/폴리우레탄 복합담체를 사용한 biofilter 운전에서 최대제거용량이 30.4 g/m$^3$/hr로 산정되어 비교적 높은 제거용량을 보여주었다. 이에 활성탄/폴리우레탄 복합담체를 충전한 biofilter 기술이 스틸렌을 효과적으로 제거할 수 있음을 보였다.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2002년도 생물공학의 동향 (X)
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• pp.415-418
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• 2002

A performance of pilot scale biofilter was investigated for the treatment of odorous waste gas. The system treated 508.7 $m^3h^{-1}$ of waste air with amine and ammonia concentrations ranging up to 0.06 $N-gm^{-3}$ Over the four month study, its elimination capacity was demonstrated up to 6.37 $N-gm^{-3}h^{-1}$ and its removal efficiency was 100%. Differ to lab scale biofilter, It is difficult to maintain the proper temperature of reactor because of low external temperature. Experiments were performed indicating various problem such as sudden system shut down, unstable pump, water addition malfunction and corrosion of reactor. However, pilot scale biofilter was stable when treatment of odorous waste gas.