• 한국미생물·생명공학회지
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• 제30권1호
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• pp.91-97
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• 2002

Removal of malodorous gases from swine manure by a polyurethane biofilter inoculated with heterotrophic and autotrophic bacteria was investigated. Ammonia, hydrogen sulfide and other gases could be efficiently treated at 3~3.6 second of empty bed retention time by the polyurethane biofilter. In the range of SV $200~l,200h^{-1}$ , the average removal efficiency of odor was about 89% when the odor unit of inlet gas was below 4100. Odor elimination capacity of the polyurethane biofilter was$ 1.8$\times$10^{5}$ $~5.0$\times$10^{7}$OUㆍm$^{-3}$ㆍ$h^{-1}$ that were 84~90% of the inlet load. The critical loads of $NH_3$ and $H_2$S, which mean 97% removal with respect to the inlet loads, were 31 and $27 g.m^{-3}$ ㆍ$h^{-1}$ , respectively. The maximum elimination capacities of $NH_3$ and $H_2$S were 56 and $157 gㆍm^{-3}$ ㆍh$^{-1}$ , respectively. Although the removability for$ NH_3$ and $H_2$S was not influenced by $H_2$S$NH_3$ ratio (ppmv/ppmv), the $H_2$S removability was inhibited by high $H_2$S concentration more than 80 ppmv.

• Journal of Microbiology and Biotechnology
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• 제13권2호
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• pp.207-216
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• 2003

A number of different sources, such as composts, leachates, and pig feces samples, were collected from different pig farms in Korea, and several microorganisms were screened for their ability to deodorize the malodorous gases. Consequently, a novel malodorous gases-deodorizing bacterial strain, KJ-108. was isolated, because it was highly abundant in nitrate-supplemented minimal medium ($MM-NO_3^-$) under anaerobic culture conditions. Airtight crimp-sealed serum bottles containing $MM-NO_3^-$ , medium were inoculated with KJ-108. Nitrate concentration was decreased rapidly after 20 h of incubation, and incubation was carried out until nitrite production reached almost zero. Taxonomic identification, including 16S rDNA base sequencing and phylogenetic analysis, indicated that the isolate had $100\%$ homology in its 165 rDNA base sequence with Lactobacillus pentosus. Among the volatile fatty acids, acetic acid contained in large amounts in fresh piggery slurry was decreased by about $40\%$ after 50 h incubation with strain KJ-108. n-Butyric acid, n-valeric acid, and isovaleric acid were gradually decreased, and isobutyric acid and capronic acid were dramatically eliminated at theinitial period with the treatment. Moreover, NH, removal efficiency reached a maximum of $98.5\%$ after 50 h of incubation, but the concentration of $H_2S$ was not changed.

• 수도
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• 통권64호
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• pp.52-71
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• 1993

• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 2004년도 춘계학술대회 논문집
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• pp.99-100
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• 2004

• International Journal of Advanced Culture Technology
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• 제6권2호
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• pp.129-136
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• 2018

Our present study, we impregnated Al-Fe-Mg-Si (NFM) nanocomposites having various concentrations 0, 1000, 3000, and 5000 mg/L in biomass in order to make carbonized biomass. We characterized the properties of the impregnated samples through thermogravimetric/differential thermal analysis (TG-DTA), pore distribution, scanning electron microscopy (SEM). The best results were observed for a NFM nanocomposites concentration of 5000 mg/L. After the first heat treatment, carbonization, and activation processes, the fixed carbon ratio and iodine adsorptivity were increased by 21.89% and 368 mg/g, 23.98% and 475 mg/g, 26.40% and 238 mg/g, respectively. The remove rate of malodorous and VOCs were that the sample shows good removal capabilities. From above results, our sample could be used for the removal of noxious and malodorous gases and for the purification of wastewater.

• 한국미생물·생명공학회지
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• 제32권3호
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• pp.265-270
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• 2004

하수 중계펌프장에서 발생되는 악취를 효율적으로 저감할 수 있는 기술로 4가지 기술(활성탄 흡착법, 약액세정법, 지렁이 분변로를 이용한 탈취법, 바이오필터법)의 탈취 효율과 경제성을 조사하였다. PU 바이오필터와 활성탄 흡착법의 평균탈취 효율은 98% 이상이었으나, 지렁이 분변토 바이오필터와 약액세정법은 60-80%의 탈취율을 보였다. PU 바이오필터 탈취 성능은 악취가스의 체류시간이 4-36초에서 체류시간과 무관하게 약 98-99%로 매우 안정적이었고, 최대 탈취능은 으로 평가되었다. $1.6${\times}$10^{ 7}$ $OUm^{-3}$$h^{-1}$ PU 바이오필터와 활성탄 흡착법의 탈취비용을 조사하였다. 악취 강도가 증가함에 따라 활성탄 흡탁법의 운전비는 선형적으로 증가하였지만 바이오필터법은 약간 증가하였다. 바이오필터의 초기 시설비의 비용이 활성탄 흡탁법의 2배 이상이었지만 운전비가 활성탄 보다 아주 저렴한 것으로 평가되었다. 결론적으로 탈취효율과 경제성이 우수한 생물여과법이 가장 유망한 기술로 평가되었다.

• 한국토양환경학회지
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• 제4권3호
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• pp.45-56
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• 1999

퇴비 공장에서 발생하는 대표적 질소계 악취가스인 암모니아를 제거하기 위해 퇴비발효장에 바이오필터를 설치하여 암모니아와 대표적 유황계 악취가스인 황화수소에 대한 제거성능을 조사하였다. 퇴비공장의 악취가스 발생은 현장의 날씨 및 퇴비 상태, 퇴비교반기의 가동여부에 따라 많은 영향을 받게 되며, 발생되는 악취의 농도는 약 2배까지 차이를 보였다. 그리고 수용성 취기를 효과적으로 제거하기 위해 수세 방식의 전처리조를 가동함으로써 암모니아의 제거능을 약 3배 이상 향상시킬 수 있었다. 바이오필터의 장기안정성을 조사하기 위해 일정한 풍량조건(SV=500h-1) 하에서 약 100일간 가동한 결과 미생물들의 순치기간은 약 30일이었으며. 이후 탈취능은 안정화되었다. 안정화가 이루어진 후 암모니아와 황화수소의 제거율은 각각 95%이상. 97%이상 유지할 수 있었다. 100$\textrm{m}^3$/min의 풍량을 처리하는 퇴비공장용 바이오필터의 전기 소비량은 약 80㎾h/일이었고, 용수 소비량은 80~100ι/일이었다. 결과적으로 퇴비장에서 발생되는 악취를 제거하기 위해 바이오필터를 적용할 경우 탈취능이 우수할 뿐만 아니라 경제적인 측면에서도 효과적일 것으로 판단되었다.

• 한국안전학회지
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• 제13권1호
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• pp.92-97
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• 1998

Malodorous gases give discomfort and harm to laborers and residential neighborhoods and therefore, the removing odor materials emitted from plants and industrial facilities is important subject. The main ingredients of alkali odor are $NH_3$ and $CE_3SH$. The adsorption characteristics of odors were studied using four different activated carbon fibers(ACF) and active carbon(AC). Alkali odor was removed by using ACF impregnated with $H_3PO_4$ and $H_2SO_4$ and treated with $HNO_3$ and NaOH. The experimental result showed that ACF has a higher removal efficiency than AC. The adsorption capacity was increased with the impregnation and surface treatment, and $H_2SO_4$ was the best impregnant for the removal of alkali odor.

• 환경위생공학
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• 제24권2호
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• pp.17-30
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• 2009

In Iksan city, there have been a lot of complaints caused by offensive odor from residents living near the public environmental infrastructures and the Iksan industrial complex. To solve these problems, it is important to know the present condition of odor pollution level in these areas, the emission characteristics of malodorous gases in temporal and spatial variations in addition to meteorological components, and the facilities of major sources emitting malodorous compounds. The objectives of this study is to make the odor monitoring network for 20 people who lived and worked in areas where the environmental infrastructures and the Iksan industrial complex are located and their neighboring areas for six months from June 1st to October 31st in 2008 in Iksan and to monitor the temporal and regional frequency and characteristics of odor intensity using direct olfactory methods. As a result of odor monitoring, the highest frequency of sensed odor per month and 20 people for six months was found to be 107 in July, followed by 84 in September, 80 in August, 54 in June, 38 in October, respectively. Odor intensity trend showed a regional trend in the decreasing order of Dongsan-dong, Busong-dong, and Palbong-dong. Odor was widely perceived from night through next morning and considered as the sense of excreta, chemicals, sewage, compost, waste, etc. When high odor intensity was sensed, there were constant meteorological characteristics: relative humidity was 80~90%, wind speed was less than 0.5~1 m/sec, and main wind directions were from the east, the southeast, and the south.

• 한국축산시설환경학회지
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• 제18권1호
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• pp.25-34
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• 2012

1. 돈사의 유형별 시간대에 따른 공기품질의 변화패턴을 알아본 결과 돈사 실내의 온 습도, 먼지농도, 실내기체의 조성 등이 주간과 야간의 편차가 크게 나타났으며, 대부분의 돈사는 주간시간대인 12:00경의 실내 환경조건이 가장 양호하였고 00:00~06:00 사이의 공기조성이 가장 불량한 것으로 나타났다. 2. 돈사의 유형별 공기품질이 양호한 곳은 임신돈사와 분만돈사였으며, 불량한 돈사는 육성돈사와 비육돈사 이었다. 공기의 품질이 양호하였던 임신돈사의 경우, 슬러리 형태로서 분과 뇨의 분리가 잘 이루어진 결과였으며, 분만돈사의 경우는 돈사당 사육두수에 비하여 포유자돈의 배설량이 적었기 때문이었다. 반면, 공기품질이 불량한 육성돈사 및 비육돈사는 분뇨배설량이 많을 뿐 아니라 분뇨의 적체시간이 긴 구조적 특성이 작용한 결과였다. 또한 분만돈사의 경우, 심야시간대인 00:00 부터 06:00 사이에 일산화탄소와 이산화탄소의 함량이 크게 증가하는 현상을 보였는데 이것은 이 시간대의 공기품질이 자돈폐사율의 증가요인이 될 수 있음을 시사한다. 3. 그러므로 돈사의 환경을 개선하려면, 실내 악취발생을 최소화할 수 있는 시설구조, 적합한 사육밀도의 조절 및 자동감지 환기 시설 등이 매우 중요한 요소라고 하겠다.