• Journal of the Korean GEO-environmental Society
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• v.10 no.5
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• pp.33-39
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• 2009

This study was conducted to evaluate production of complex odor and 12 specific odorous compounds in a pilot-scale (capacity : $100m^3$) ultra thermophilic aerobic composting. There were three types input: municipal wasted sludge, livestock manure and slurry, and food waste produced in Jung-Eb city. Each raw material was mixed with seed material and operated for two periods (1st : 50 days, 2nd : 60days). During composting, the temperature hit $90{\sim}95^{\circ}C$ after every mixing in both periods. Therefore, it was concluded that increasing temperature also saves the time which required for composting and high reduction of organics and water contents. The primary odorous compounds were ammonia, methyl mercaltan, dimethyl disulfide and trimethylamine. The concentration of the primary compounds and complex odor during the operation were higher than those on final day and most compounds did not exceed the allowable exhaust standard for odor. Also, it was found that optimal mixing time and control of high temperature are the most important parameters for odor control in ultra thermophilic aerobic composting.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2008.11a
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• pp.134-138
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• 2008

본 연구는 경기도내 악취관리지역으로 지정된 시화국가산업단지, 반월국가산업단지, 반월도금지방산업단지, 아산국가산업단지(포승지구) 4개 공단에 대하여 2006년과 2007년에 실시한 악취실태조사 자료를 이용하여 각 공단별 악취특성을 조사하였다. 또한, 측정된 자료를 통계분석 기법을 사용하여 복합악취와 지정악취물질간의 상관관계를 연구하였으며 그 결과는 다음과 같다. 1. 시화공단과 반월도금공단에서는 비교적 NH$_3$와 Styrene이 높고 반월공단에서는 H$_2$S가 다른 공단에 비해 약 5배 정도 높은 평균농도를 보였으며 포승공단은 일반적인 배출형태와 크게 다르지 않았다. 2. SAS를 이용한 통계분석 결과 시화공단의 복합악취는 H$_2$S, TMA, Styrene, nvAldehyde와의 관련성이 높고 반월공단은 H$_2$S, aAldehyde, bAldehyde, 반월도금공단은 NH$_3$의 관련성이 높은 것으로 조사되었다.

• KSBB Journal
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• v.22 no.3
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• pp.151-156
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• 2007

Increasing public concerns over odors and air regulations necessitates the remediation of a wide range of odorous compounds for industrial purpose. Currently, wet scrubbing technique by neutralization using essential oils is utilized to treat methyl mercaptan odor. The chemical analysis is performed to analyze the composition of an essential oil by GC-MS. The objective of this study is to clarify the possibility of the neutralization of odors sprayed in the fixed bed and determine the removal efficiencies in the misty aerosol by different input odor concentration. It is found that methyl mercaptan is significantly removed in the wet scrubber, and their removal efficiency of methyl mercaptan is obtained by 98%.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.352-353
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• 2000

악취물질은 산업의 발전과 경제성장에 따른 생활수준의 향상으로 인하여 급격히 늘어나는 대기오염 물질 중의 하나로, 악취문제는 인간의 오감을 통해서 느끼는 감각공해의 대표적인 물질이다. 악취물질의 대표적인 성분인 암모니아는 무색의 자극성이 매우 크고 부식성이 있는 알칼리 기체로 1 ppm 정도에서 감지되어 다른 악취물질보다 감지되는 농도가 높다. 또한 그 배출원이 화학공장 등의 산업시설 뿐만 아니라 양돈, 양계장 등에서도 배출되어 우리 주위에서 쉽게 감지할 수 있는 물질이다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.11a
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• pp.183-184
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• 2002

악취현상 평가방법은 냄새유발물질의 농도를 정량적으로 분석하는 화학성분분석법과 복합취기물질에 의란 감각수준을 다수의 악취판정인이 평가하는 관능측정법으로 대별할 수 있다. 특히, 관능측정법의 경우 자극의 세기를 표현하는 직접관능법과 최소냄새감지한계회석배수를 구하는 간접관능법으로 구분할 수 있으며, 환경악취현상을 객관적으로 평가하기 위해서는 성분분석과 감각수준을 평가하는 두 방법에 의한 측정결과를 종합적으로 고려하는 것이 타당한 것으로 알려져 있다. (중략)

• Journal of Korean Society of Environmental Engineers
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• v.37 no.4
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• pp.240-245
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• 2015

This study aimed to provide the basic data to establish measures for the management of the public toilets and reduction of the offensive odor through the air dilution olfactory method and instrumental analysis about offensive odor dilution rate of public toilets, focusing on the Dong-gu, Daejeon Metropolitan City, Korea. The offensive odor intensities ranged from 10 degree to 669 degrees in the urinal toilets and from 31 to 464 in closet bowl toilets. Meanwhile, toilets that had offensive odor of more than 2.5, of which a civil complaint can be filed, were researched 6 (33%). Offensive odor intensities were different according to the closet bowl toilets of the flush, fermented and conventional methods and the year of their installation, but not according to the area of the toilets. As a result of the instrumental analysis targeting 6 public toilets to identify the offensive odor substance, the maximal concentration of $NH_3$ was 2.04 ppm and the average concentration was 0.67 ppm, but $H_2S$, $CH_3SH$ and $(CH_3)_3N$ were not detected. In the fermented and conventional public toilets were not soaps, air fresheners and wastebaskets. Just 50% of the flush toilets had toilet tissue.

• Journal of Korean Society of Environmental Engineers
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• v.38 no.4
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• pp.162-168
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• 2016

The aim was to investigate the effect of reducing the odorous and complex odor released during the decomposition of food wastes using effective microorganism (EM) as a function of time at $20^{\circ}C$ and $35^{\circ}C$. The variation of total microbial counts and dominant species counts in EM and leachate produced during food wastes decomposition was also observed. In general, the cumulative concentration of sulfur compounds ($H_2S$, $CH_3SH$) and complex odor released during food wastes decomposition increased with increasing elapsed time. The nitrogen compounds ($NH_3$, trimethyl amine), however, was not observed in all samples. The addition of EM in food wastes resulted in the reduction of concentration of sulfur compounds and complex odor, in spite of the increase of $CH_3CHO$ concentration. The dominant microbial species detected in EM were Lactobacillus species(Lactobacillus rhamnosus and Lactobacillus casei). In the leachate produced during food wastes decomposition, however, the various microbial community alternative to that detected in EM was observed. The EM could be potentially useful as a tools for reducing odor induced from the food waste decomposition process.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2004.11a
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• pp.316-317
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• 2004

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2004.11a
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• pp.407-408
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• 2004

• Journal of the Korean earth science society
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• v.27 no.2
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• pp.209-220
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• 2006

In this study, the distribution patterns of major odorous compounds in ambient air were investigated in the areas surrounding the Ban-Wall industrial complex of Ansan, Korea (Aug. 2004 to Sep. 2005). The results indicated the environmental significance of several major odorous compounds which include carbonyl compounds, reduced sulfur compounds (RSC), and volatile organic compounds (VOC). When the results were compared on a diurnal basis, the afternoon time concentration of most odorous compounds were notably higher than their morning time counterparts. It also indicated that the odor concentrations differed greatly, in terms of spatial grouping scheme of data sets, such as between industrial area and non-industrial area. The comparison of spatial patterns indicated that the concentrations of most of the compounds at the industrial area were maintained at high concentration levels, compared to the surrounding areas. The overall results of this study thus suggest that the distribution of odorous compounds in a large industrial complex can exhibit a unique pattern of their own.