• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 2001.11a
• /
• pp.409-410
• /
• 2001

악취 발생원은 하수ㆍ분뇨처리장, 매립지 등 각종 환경기초시설에서부터 석유화학단지, 각종 산업시설, 그리고 농촌의 축사에 이르기까지 우리 생활주변에 널리 분포되어 있다. 탈취시설은 일반적으로 분뇨처리장을 제외하고는 보편화되어 있지 않으며, 특히 일반 농촌 축사의 경우는 탈취 시설이 전무한 상태로서 축사에서 발생하는 악취로 인한 주민 민원 발생이 증가하고 있다. 특히 축분의 대사과정에서 주로 발생되는 악취인 암모니아는 강한 악취성분의 하나로 배설된 분뇨에서 미생물의 유기물 분해에 의해 암모늄이 생성되고, 생성된 암모늄은 암모니아 가스로 대기중으로 휘산되어 강한 악취를 발생시킨다.$^{1)}$ (중략)

• Journal of Environmental Impact Assessment
• /
• v.24 no.4
• /
• pp.332-343
• /
• 2015

It would be the most effective way to have government take care of social problems and hazardous material danger due to odor. It is also well known that odor acceptance and their willingness to pay for resolving the odor problem vary person by person. This is why public sector's intervention is required to get ride of any possibility of market failure resulted from negative external effect of human. This paper has tried to do empirical research based on survey of residents who are currently living in the area of Ochang industrial complex in North Chong-chung province. According to the empirical research results, first of all, it was proven residents' perception of legal regulation has a negative effect on odor acceptance. That is, the more residents are aware of law and regulation, the less they tend to accept odor. In addition, resident's perception on need to improve odor regulation has a positive impact on their odor acceptance. Finally, residents' satisfaction on the legal complaints to local government has an interaction effect to causative relationship between the perception of improving odor regulation and odor acceptance.

• Journal of the Korean Applied Science and Technology
• /
• v.34 no.3
• /
• pp.694-703
• /
• 2017

Many residents living near the cement factories are facing unpleasant odors. Thus, various efforts have been attempted to reduce the emission of odorous compounds from the cement manufacturing processes. This study focused on analysis of Acetaldehyde and their dispersion in vicinity of the residential area using theoretical calculation such as numerical simulation and dispersion model. The most significant odor species was acetaldehyde indicating 2 ppb at the test point, and the estimated concentration was similar to the value by Calpuff calculation. The modelling work revealed the emission source of the factory to influence the test site.

• Journal of the Korean GEO-environmental Society
• /
• v.10 no.5
• /
• pp.33-39
• /
• 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 the Korean Recycled Construction Resources Institute
• /
• v.12 no.2
• /
• pp.229-238
• /
• 2024

This study evaluated the odor removal performance of a bacteria-based odor reduction kit. The bacteria used were Rhodobacter capsulatus, Paracoccus limosus, and Brevibacterium hankyongi, which can remove ammonia (NH₃), hydrogen sulfide (H₂S), total nitrogen (T-P), and total phosphorus (T-N), which are odor pollutants. The materials used were bacteria and porous aggregates (expanded vermiculite, zeolite beads, activated carbon), and the combination of the materials varied depending on the removal mechanism. Materials with a physical adsorption mechanism (zeolite beads and activated carbon) gradually slowed down the concentration reduction rate of odor pollutants (NH₃, H₂S, T-P, and T-N), and had no further effect on reducing the concentration of odor pollutants after 60 hours. Expanded vermiculite, in which bacteria that remove odors through a bio-adsorption mechanism were immobilized, had a continuous decrease in concentration, and the concentration of odor pollutants reached 0 ppm after 108 hours. As a result, the odor removal performance of materials with physical adsorption mechanisms in actual river water did not meet the odor emission standard required by the Ministry of Environment, while the expanded vermiculite immobilized with bacteria satisfied the odor emission permissible standard and achieved water quality grade 1.

• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 2002.04a
• /
• pp.271-272
• /
• 2002

국내에서 악취와 관련된 연구는 대부분 표본채취 분석 등 실태 파악 수준에 머물러 있으며, 악취원의 주변지역 기여도 분석 등에 관한 연구는 거의 없다. 특히, 악취물질의 배출계수 개발 부분과 배출원 inventory와 관련된 내용은 거의 없거나 매우 초기단계이다. 생활악취시설 중 쓰레기 매립장, 소각장, 하수종말처리장, 위생처리장, 음식물쓰레기처리공장(퇴비화, 사료화 등) 등의 환경기초시설은 주로 주민의 생활주변에 산재되어 있는 시설로서, 이들로부터 발생되는 악취물질은 관리상태(기기의 실태 및 관리), 기상조건(온도, 습도, 바람장 등), 발생원의 특성(매립장의 형식, 규모, 사용기간 등)에 따라 크게 달라진다. (중략)

• Environmental engineer
• /
• s.172
• /
• pp.56-61
• /
• 2000

먼지, 소음$\cdot$진동, 그리고 악취는 쾌$\cdot$불쾌가 다분히 감각적이어서 건강에 미치는 영ㅇ향 뿐만 아니라, 쾌적한 생활공간을 만드는데 중요한 관리 대상이다. 악취에 대한 사람들의 인식의 증가와 함께 생활공간에서의 악취문제는 더욱 연구되어야 할 당면 문제이다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.13 no.2
• /
• pp.856-865
• /
• 2012

Maintenance systems are demanded to manage malodor-information and deal effectively with the odor-related civil complaints by constructing the database for sources of malodor compounds in real time. In this paper, to carry out these tasks, a real-time monitering system for malodor based on ubiquitous sensor networks(USN) is presented. The constructed monitering system stores the malodor data collected periodically from industrial complex into the database and shows in real time the circumstances of the odor sources being emitted around the industrial complex by indicating on the map where it is taking place. Besides, by clicking an icon indicating the sensor node on the map, we can figure out what firms are located near the malodor source and possible material related with those firms. The proposed system is considered to enhance the efficiency of management of malodor-emitting firms based on the malodor-related information.

• Journal of the Korean Society of Hazard Mitigation
• /
• v.10 no.6
• /
• pp.185-191
• /
• 2010

This study investigates the odor from combined sewer in urban areas and major odor-causing facilities. Monitorings are conducted in specific areas that have representative characteristics. In combined sewer in urban areas, the real-time monitorings on sulfur, complex odor and specified odor are conducted. And in major odor-causing facilities, the real-time monitorings on complex odor, specified odor are conducted. Odor from combined sewer in urban area is affected by the changes on floating population and the effluent of the septic tank. Also major odor-causing facilities are largely affected by the effluent of the septic tank. The major odor-causing substances are found to be hydrogen sulfide($H_2S$) and methyl mercaptan. To reduce the odor from combined sewer, improvement of effluent from the septic tank and reduction of sulfur compounds have to be done.

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