• 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.

• 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.

• Journal of Korean Society of Water and Wastewater
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• v.27 no.2
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• pp.165-175
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• 2013

This study aims to analysis correlation in septic tank and sewer pipe between odor substances and complex odor. For the analysis, convert odor substances to odor intensity, and estimate the effect of odor substances on complex odor. As a result, both Hydrogen sulfide and Methyl mercaptane of specified offensive odor substances accounted for 29 percent of the effect of odor substances on complex odor. Hydrogen sulfide and Methyl mercaptane are major cause of odor from septic tank and sewer pipe. The result of this study is suggested to be used as a preliminary data for research on analysis complex odor and odor substances.

• Journal of the Korean GEO-environmental Society
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• v.17 no.11
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• pp.35-43
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• 2016

In this study, by using a Effective Microorganisms Brewing Cycle, it confirmed the purification effect of pollutants that are adsorbed on the basins stench removal and retarding soil. On the basis of on-site application test, a soil decontamination system will be suggested. Using a Effective Microorganisms Brewing Cycle, the odor concentration is reduced 2.5 times than that of natural purification treatment method. It was measured and found that the quality of the pore water discharged from the soil is improved. In addition, it was found that a composite of copper and lead with the fermentation microorganisms adsorbed on soil particles from the surface of the stirred experiments lagoon mixed soil is reduced to 65% and 66%, respectively, The TPH organic component was confirmed that the reduction effect of 85%. Restoration of reservoir contaminated soils using the effective microorganism brewing cycle needs to be more developed and implemented as a long-term purification system. This study may be a good reference of developing more complete microorganism brewing system which will efficiently reduce the odor and soil contamination based on optimal stirring and mixing ratio of the compound solutions and contaminated soils in reservoir.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.11a
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• pp.175-176
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• 2003

국가적으로 운영되는 국가산업단지는 악취를 포함한 유해 대기오염물질이 다량으로 배출되어 악취 피해의 민원이 증가하면서 이에 따른 악취 저감 대책 및 규제대책 마련에 관심도가 높아지고 있다. 특히 악취는 여러 가지 성분이 복합적으로 존재하고 후각에 의해 인지되기 때문에, 감각공해로서 후각의 개인적 차이와 기후와 지리적 여건에 따라 그 피해 정도가 달라지게 된다. 이러한 악취의 특성을 고려하면, 정량적으로 산출하기가 매우 까다롭고, 그에 따른 악취규제대책 마련도 매우 복잡할 수 있다. (중략)

• Journal of Korea Multimedia Society
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• v.13 no.8
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• pp.1171-1182
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• 2010

In this paper, odor classification and source analysis methods are proposed to trace odor sources in th air at the specific place and period. It is necessary to generate representative patterns in order to classify the various odors efficiently. We, therefore, create 67 kinds of odor representative patterns measured from the main sources. considering the air mixed with various odors, several mixed representative patterns for odor sources are generated with the combination of two or three different odors. In addition, the weight of odor sources for an odor from a civil complaint region are computed using pseudo inverse method. As a result, we can trace and identify the odor sources to lead to a specific odor and the contribution of each source. The results of this study will be useful for settling the civil complaint related with odors.

• Journal of Korean Society of Environmental Engineers
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• v.34 no.8
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• pp.541-548
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• 2012

The objective of this study was to investigate emission characteristics of odorous compounds from the pneumatic waste collection plants (namely, A and B sites). The air samples were collected from each site, at a carrier gas inside the plant and an exhaust gas, to analyze complex odor and 22 odorous compounds. Ammonia, sulfur compounds, and acetaldehyde were the critical odorous components generated in the plants studied. Characteristics of odor at exhaust outlet varied according to the type of odor control engineering. In the analysis of the odor contribution degree of odor components based on odor threshold, site A shows that the odor contribution of dimethyl sulfide was found to be 26%, acetaldehyde 18%, and methyl mercaptan 14%. For site B, methyl mercaptan was 56% and both hydrogen sulfide and dimethyl sulfide were 15%.

• 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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• 2002.04a
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• pp.209-210
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• 2002

감각적인 불쾌감을 야기하는 악취물질의 종류는 다양하며, 매우 낮은 농도에서도 감각기관을 자극할 뿐 아니라 물질간 반응이 복잡한 특징을 갖고있어 화학성분분석법과 함께 감각적인 자극수준을 평가하는 관능측정법을 병행하여 악취현상을 종합적으로 평가하게 된다 특히 매립지 등의 환경기초시설이 운영됨에 따라 나타나는 악취현상을 객관적으로 평가하기 위해서는 대기확산모델의 운영이 필요하며, 이를 위한 악취배출량 자료의 구축이 필요하게 된다. (중략)

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.12
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• pp.6602-6609
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• 2013

This study is expected to provide background data for establishing mitigation measures for malodor and for comparing complex odor criteria. The impact of malodor at the afflicted locations was analyzed using Industrial Source Complex Short Term 3 (ISCST3) model, which was recommended by the EPA. The Odor Emission Rates (ODR) for piglets and hogs were predicted based on the average, minimum, and maximum emission rates as classification. The forecasting result of the complex odor modelling of pigsty showed that tolerance limit was exceeded at an adjacent administration building, but tolerance limit was not surpassed at an afflicted location which was within 185m from the pigsty. The ISCST3 modelling of the satisfactory ODR for tolerance limit was accomplished at the administration building. From the prediction of this modelling, maximum emission rates based on 1hr at administration building were 10.59~52.93, 19.05~31.76, and 10.59 $OU/m^3/s/m^2$ at emission rates of 50%, 30%, and 10%. This emission rate was slightly higher than the tolerance limit of 10.00 $OU/m^3/s/m^2$. However, it was inferred that the tolerance limit could be satisfied if the emission rate of 10% was controlled.