• Journal of Environmental Health Sciences
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• v.35 no.3
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• pp.191-200
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• 2009

We investigated a trait of odor and the relationship between odor unit and odorous compounds using multiple regression analysis based on data compiled from Sihwa (SIC), Banwol (BIC), Banwol plating (BPIC) and Poseung industrial complex (PIC). These areas are odor control areas in Gyeonggi province. It was revealed that $NH_3$ and styrene concentrations in SIC and BPIC were relatively higher and $H_2S$ concentration especially in mc was more than five times higher than other areas. As a result of regression analysis using SAS, intensity of odor unit was highly related to concentrations of $H_2S$, TMA, styrene and n-valeraldehyde in SIC, $H_2S$, acetaldehyde, and butyraldehyde in BPIC and $NH_3$ in BIC.

• Journal of Environmental Impact Assessment
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• v.32 no.1
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• pp.1-14
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• 2023

When carrying out development projects around Ardeidae breeding habitats, we intend to devise a plan for sustainable coexistence by presenting measures to select and reduce key evaluation items so that conflicts can be prevented in advance at the environmental impact assessment stage. The results of the study are as follows. The main evaluation items are animal and plant items for preservation of Ardeidae breeding habitats and odor and noise items that can evaluate the effects of odors and noise in Ardeidae breeding habitats. First, the scope of the survey in animals and plants categories is not limited to legal guardian species, but includes egrets breeding and feeding grounds corresponding to major species breeding grounds and migratory birds, and preservation measures are established according to the reduction of the area of breeding and feeding grounds. Second, in the odor category, the irradiation period includes the period when the odor generation is the highest from the end of June to the end of July. The odor evaluation standard is based on the complex odor discharge standard, which is a concentration regulation, and the odor concentration felt by humans shall be 2 to 5OU/m³ and the frequency shall be 2% or less. Third, in the noise category, the timing of the survey is measured every month from May to August, including when the sound of egrets and young birds is combined to maximize noise generation. Since the noise of Ardeidae, a bird in summer, occurs only for a certain period of time, measures are taken to reduce noise by securing separation distances, securing buffer green areas, and installing construction rather than installing artificial structures such as soundproof walls. In order for existing Ardeidae breeding sites to maintain an appropriate density of populations and not move populations elsewhere, it is necessary to manage nesting tree and maintain stable habitat quantity and quality.

• Journal of Animal Environmental Science
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• v.13 no.3
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• pp.171-178
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• 2007

This study was carried out to investigate the effect of microbial complex diets on improvement of air quality in finishing pig building. Ammonia and hydrogen sulfide concentrations were significantly(p<0.05) decreased by dietary supplementation of 0.1% level of microbial complex compared with those of control according to the time in the finishing pig building. Characteristics of piggery liquid slurry that total nitrogen and $NH_3-N$ of treatment were reduced relatively compared with those of control, and were decreased depending on the time. In conclusion, the result obtained from this study suggest that the dietary supplementation of microbial complex for finishing pigs may improve environment in the finishing pig building.

• KOREAN POULTRY JOURNAL
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• v.44 no.4
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• pp.124-127
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• 2012

경기도 광주시에 위치한 '곤지암농장'은 닥트환기 관리시스템 도입과 생균제 사용으로 농장 운영에 새 맛을 느끼고 있다. 양압식 닥트 환기시설로 신선한 공기를 농장 내부로 유입시켜 최대한 쾌적한 환경을 조성하여 닭이 받을 수 있는 스트레스를 최소화 하고 복합 배양 미생물 생균제 사용으로 사료효율개선, 닭고기 품질 향상, 난방비 절감, 악취 감소 효과를 보고 있었다. '곤지암농장'은 5만수 규모의 24일령 된 육계가 사육되고 있었으며 일주일 후 출하를 앞두고 있었다. 이 지원 사장을 만나 농장운영체계와 육계산업에 대한 생각을 들어보았다.

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2003.04a
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• pp.128-131
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• 2003

최근 산업의 발달과 생활수준의 향상으로 쾌적한 생활환경에 대한 관심이 높아지고, 이와 관련하여 섬유 분야에서도 미생물에 대한 저항성이나 악취 등을 제거하는 섬유에 관심이 집중되고 있다. 일반적으로 합성 섬유의 항미생물 가공은 내세탁성이 우수하지 못하지만, 극세사의 경우 일반사에 비해 표면적이 커서 가공제의 흡착량이 많아져, 극세사 소재가 가지고 있는 고흡수성을 저하시키지 않으면서 항미생물성을 갖는 나일론/폴리에스테르(N/P) 복합극세사 소재에 대한 연구가 이루어지고 있다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2008.10a
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• pp.451-452
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• 2008

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2001.11a
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• pp.415-416
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• 2001

최근 환경오염에 대한 관심이 고조되면서 VOCs를 비롯한 각종 악취물질 제거에 광촉매가 각광받고 있다. 광촉매는 기존 오염물질 제거기술과는 달리 광촉매 하나로서 복합적인 오염물질을 한꺼번에 분해할 수 있는 장점이 있다. 그러나 미세한 광촉매 분말(powder)은 오히려 분진으로 작용할 수 있고, 회수가 어려워 응용에 있어 상당한 제약을 받는다. 이에 상용화된 TiO$_2$ 분말이나 졸을 지지체에 코팅한 TiO$_2$ 박막으로 광촉매의 응용 범위를 점차 확대해 나가는 추세이다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.04a
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• pp.207-208
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• 2002

고무는 자동차 타이어, 고무밴드, 고무장갑, 주형틀 등 산업활동 및 생활용품 등에 많이 사용되고 있다. 고무제조 공장에서는 다양하고 복합한 화학물질을 사용하여 열, 압력, 촉매반응 등 다양한 공정을 통해 고무제품을 제조하고 있다. 고무제품 중 타이어를 생산하는 공장 내 작업환경은 먼지, 가스, 퓸과 nitrosamines 등과 같은 화학부산물에 의해 오염된다 따라서, 근로자들은 호흡기, 피부 등을 통해 고무생산 및 제조공정에서 방출되는 유해물질들에 노출되고 있는 실정이다(NIOSH, 1993). (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.11a
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• pp.409-410
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• 2002

우리들이 일상적인 생활을 하는 과정에서 발생되는 생활폐기물은 그 처리문제가 심각한 사회문제로 대두되고 있다. 생활폐기물을 처리하기 위하여 매립(39%)에 의존하고 있고, 일부가 소각(5%)되고 있는 실정이다. 협소한 국토사정, 매립과정에서의 악취 등 생활환경문제, 매립후 장기간에 걸쳐 유기물이 분해하는 과정에서 발생되는 침출수로 인한 2차 환경오염문제의 발생으로 앞으로 소각처리의 확대는 필연적이라 할 수 있다. (중략)

• Korean Chemical Engineering Research
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• v.56 no.1
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• pp.85-95
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• 2018

In this research, a biofilter system equipped with a biofilter process and a humidifier composed of a fluidized aerobic and an anoxic reactor, was constructed to treat odorous waste air containing hydrogen sulfide, ammonia and VOC, frequently generated from pig and poultry housing facilities, compost manufacturing factories and publicly owned facilities. Its optimum operating condition was revealed and discussed. In the experiment of complex feed, the ammonia of fed-waste air was removed by ca. 75% and more than 20% at the stage of the humidifier and the biofilter, respectively. The toluene of the fed-waste air was removed by ca. 20% and more than 70% at the stage of the humidifier and the biofilter, respectively. Therefore the water-soluble ammonia and the water-insoluble toluene were treated mainly at the stage of the humidifier and the biofilter, respectively. In addition, hydrogen sulfide was almost absorbed at the stage of the humidifier so that it was not detected at the biofilter process. In the experiment of ammonia-containing feed, the ammonia of fed-waste air was removed by ca. 65% and 35% at the stage of the humidifier and the biofilter, respectively. Its removal efficiency of ammonia at the stage of the humidifier was 10% less than that in the experiment of complex feed, due to no supply of such carbon source as toluene required in the process of denitrification. In the experiments of complex feed, ammonia-containing feed with and without (instead, glucose) the addition of yeast extract, the absorption rates of ammonia-nitrogen were ca. 0.28 mg/min, 0.23 mg/min and 0.27 mg/min, respectively. The corresponding denitrification rates in the anoxic reactor were 0.42 mg/min, 0.55 mg/min and 0.27 mg/min, respectively. In addition, in the modeling of bubble column(the fluidized aerobic reactor of the humidifier) process, the value of specific surface area(a) of bubbles multiplied by enhanced mass transfer coefficient (E $K_y$) was evaluated to be 0.12/hr.