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정구회,김선태,박민수,정재호 한국냄새환경학회 2004 실내환경 및 냄새 학회지 Vol.3 No.4
In this study, the odor emission characteristics with unit process in a sewage treatment facility were investigated in terms of odorous compounds and odor unit concentration, which were evaluated by an instrumental analysis method and an indirect olfactory method, respectively. In addition, odor emission capacities were evaluated to reflect the odor emission characteristics of water body itself. Finally, odor emission velocities, which is the most essential factor to calculate the odor emission amount for EIA (environmental impact assessment), were investigated using the odor sensing chamber system. The results, evaluated by the instrumental analysis method and the indirect olfactory method, showed the high odor concentration in the order of primary sedimentation basin, final sedimentation basin and air flotation thickener. The major odorous compounds were appeared to be sulfur compounds, such as hydrogen sulfide, methylmercaptan, methyl sulfide and methyl disulfide. Odor emission velocity with unit treatment processes were 2.00cm/sec for the primary sedimentation basin, 1.87cm/sec for the grit chamber and aeration tank, 1.39cm/sec for the final sedimentation basin, 1.36cm/sec for the air flotation thickener. 본 연구에서는 하수처리장내의 단위 공정별 주요 악취원인물질 발생 특성 파악을 위하여 기기분석을 이용한 단일취기물질 분석과 병행하여 공기희석관능법을 통한 악취농도를 평가하였다. 또한, 수체가 갖는 특성에 따라서 외부로 발산되는 냄새유발물질의 정도를 판단하기 위한 악취발생능 평가를 수행하였다. 악취현황에 대하여 환경영향평가를 하기 위해서는 악취 발생량 산정이 필요하며, 이를 위한 기초 자료로 하수처리장내 공정별 악취 발산속도를 Odor sensing chamber system을 이용하여 평가하였다. 기기분석 및 공기희석관능법을 적용하여 악취현황을 평가한 결과에서는 최초침전지, 침전지, 가압부상농축조 순으로 악취농도가 높게 나타났으며, 황화수소, 메틸머르캅탄, 황화메틸, 이황화메틸 등의 황화합물이 주요한 악취 성분으로 나타났다. 또한, 공정별 악취발산속도는 최초침전지(2.00cm/sec), 침사지와 포기조(1.87cm/sec), 최종침전지(1.39cm/sec), 가압부상농축조(1.36cm/sec) 순으로 나타났다.
시화산단 및 인근지역에 위치한 학교 실내 · 외 공기의 미세먼지 및 위치한 학교 실내 · 외 공기의 미세먼지 및 알데히드 분석
강희주,정구회정경춘신철호,김덕현 한국실내환경학회 2014 한국실내환경학회지 Vol.13 No.2
This study tried to survey air quality inside and outside the schools where are located in about 5km of industrial complex targeting aldehyde, PM10, PM2.5. Also, the aim was also to examine both a change in indoor air after 3 years and within 3 years of addition and improvement, and a change according to season. It collected specimens at totally 20 places. Aldehyde was analyzed through HPLC. PM10 and PM2.5 were measured by using Met One 831. Formaldehyde and Acetaldehyde were detected with 42.1 µg/m3 and 5.7 µg/m3 at the school where is located inside 5km of the industrial complex, and were detected with 55.0 µg/m3 and 6.8 µg/m3 at the school where is located outside 5 km. This could be confirmed to have been detected more highly in the indoor air than the outdoor air regardless of the distance from the industrial complex. Most substances were indicated to be higher by about 150% in the indoor air within 3 years than the indoor air following 3 years of addition and improvement. However, PM10 and PM2.5 were measured with 32.6 µg/m3 and 14.9 µg/m3 after 3 years and were gauged with 22.4 µg/m3 and 14.2 µg/m3 within 3 years. Seeing a seasonal change, Formaldehyde and Propionaldehyde were detected with 5.5 µg/m3 and 1.0 µg/m3 in spring, 7.7 µg/m3 and 1.6 µg/m3 in summer, and 8.3 µg/m3 and 1.9 µg/m3 in autumn. This could be confirmed the tendency of growing according to season.
악취저감 향상을 위한 스크러버 세정수 처리 시스템 개발
정구회,김연수,김덕현 한국냄새환경학회 2015 실내환경 및 냄새 학회지 Vol.14 No.4
The purpose of this study is to develop a scrubber wastewater cleaning system to improve the efficiency of odor reduction. We evaluated the changes in scrubber wastewater quality and odor reduction efficiencies before and after applying the pilot system. We determined that it was possible to extend the replacement cycle by two times or more considering the turbidity change and organic removal efficiency. Butyraldehyde, a major odor-causing substances in the exhaust gas of the target facility, is soluble in water. As a result, the odor reduction efficiency was improved by removing the butyraldehyde in the scrubber wastewater. Economically, it is possible to save about 12 million won per year. Thus, it is necessary to keep scrubber wastewater clean in order to improve the deodorization efficiency and reduce the cost of disposal.
시화산단 및 인근지역에 위치한 학교 실내·외 공기의 미세먼지 및 알데히드 분석
강희주,정구회,정경춘,신철호,김덕현 한국냄새환경학회 2014 실내환경 및 냄새 학회지 Vol.13 No.3
This study tried to survey air quality inside and outside the schools where are located in about 5km of industrial complex targeting aldehyde, PM10, PM2.5. Also, the aim was also to examine both a change in indoor air after 3 years and within 3 years of addition and improvement, and a change according to season. It collected specimens at totally 20 places. Aldehyde was analyzed through HPLC. PM10 and PM2.5 were measured by using Met One 831. Formaldehyde and Acetaldehyde were detected with 42.1 μg/m3 and 5.7 μg/m3 at the school where is located inside 5km of the industrial complex, and were detected with 55.0 μg/m3 and 6.8 μg/m3 at the school where is located outside 5 km. This could be confirmed to have been detected more highly in the indoor air than the outdoor air regardless of the distance from the industrial complex. Most substances were indicated to be higher by about 150% in the indoor air within 3 years than the indoor air following 3 years of addition and improvement. However, PM10 and PM2.5 were measured with 32.6 μg/m3 and 14.9 μg/m3 after 3 years and were gauged with 22.4 μg/m3 and 14.2 μg/m3 within 3 years. Seeing a seasonal change, Formaldehyde and Propionaldehyde were detected with 5.5 μg/m3 and 1.0 μg/m3 in spring, 7.7 μg/m3 and 1.6 μg/m3 in summer, and 8.3 μg/m3 and 1.9 μg/m3 in autumn. This could be confirmed the tendency of growing according to season.
시화ㆍ반월공단내 기타조립금속제품 제조 및 금속처리업의 VOCs 배출특성 연구
길인섭,김덕현,양동집,정구회 한국냄새환경학회 2006 실내환경 및 냄새 학회지 Vol.5 No.3
The VOCs discharge characteristics of miscellaneous assembly metal manufacture & metal processing industries, in the SihwaㆍBanwol Industrial Complex, were analyzed according to detailed categories per industry, as based on the Korea Standard Industrial Classification, by comparing the conditions before and after the installation of process and prevention facilities. The average concentration of benzene was highest in the metal heat treatment industry (28921) whereas that of toluene was highest in the painting & membrane treatment industry (28923). In addition, with respect to prevention facilities, our evaluation proved that the decreased efficiency was worse for the discharge facilities of pollutants from the plating industry (28922) and painting & miscellaneous membrane treatment industry (28923), with some exceptions, while most facilities showed no decreased efficiency. Therefore, it is believed that an accurate survey of the conditions of administration/operation facilities will need to be conducted, and the decreased efficiency will also need to be evaluated so that adequate prevention facilities can be reviewed and selected.