[SESSION PB 포스터-실태 및 관리]PB1) 악취발생능에 의한 폐수처리장내 악취발생원 평가

정구회,이태영,김학민,김선태 한국대기환경학회 2004 한국대기환경학회 학술대회논문집 Vol.- No.-

하수처리장에서의 악취 배출 성상 조사

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 개발연구

정구회(Gu-Hoi Chung),임문순(Moon-Soon Im),김연수(Youn-Soo Kim),김덕현(Duk-Hyun Kim) 한국청정기술학회 2017 청정기술 Vol.23 No.1

스크러버는 적정한 처리효율을 유지하기 위하여 세정수를 지속적으로 교체해 주어야 한다. 하지만 화학업종 대부분은 폐수처리시설이 없어 스크러버 세정수를 위탁 처리하고 있으며, 처리비용 때문에 자주 교체해 주지 못하는 실정이다. 이로 인해 악취배출허용기준을 초과하거나 배출구 농도가 더 높아지는 역전현상을 유발하기도 한다. 이에 세정수를 자체 정화 하여 사용할 수 있도록 여과와 흡착 공정으로 구성된 세정수 처리시스템을 개발하였다. 세정수 처리 시스템은 화학업종 두 개 스크러버를 대상으로 적용하였으며, 세정수 수질 상태와 악취저감 효과를 평가하였다. 세정수 처리 시스템 적용 결과 50% 이상의 수질개선 효과와 20% 이상의 악취개선 효과를 확인 하였으며, 기존 운영대비 40%의 비용절감 효과도 기대할 수 있었다. The scrubber wastewater should be replaced frequently to maintain efficiency. Most chemical companies consign scrubber wastewater, because there are no wastewater treatment facilities. So scrubber wastewater is not frequently replaced because of high treatment cost. For this reason, the most scrubber exhaust gas exceeds the odor emission limit or has a phenomenon that the odor intensity of exhaust gas becomes higher. Therefore we have developed a scrubber wastewater cleaning system consisting of filtration and adsorption processes. The scrubber wastewater cleaning system was applied two chemical companies. We evaluated the water quality and odor reduction effect before and after system application. As a result, scrubber wastewater quality improved by 50% or more, odor reduction efficiency of scrubber exhaust gas improved by 20% or more. And the total operating costs of the scrubber could be reduced by 40% or more.

악취평가용 Olfactometer의 제작과 성능평가를 위한 기초실험

정구회(Gu Hoe Chung),김선태(Sun Tae Kim),손찬웅(Chang Ung Shon),홍지형(Ji Hyung Hong) 大韓環境工學會 2004 대한환경공학회지 Vol.26 No.9

하수처리장에서의 악취 배출 성상 조사

정구회,김선태,박민수,정재호 한국냄새환경학회 2004 실내환경 및 냄새 학회지 Vol.3 No.4

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.

용담호 조성에 따른 국지기상변화의 평가

김학민,이범진,정구회,정재호,김선태 대전대학교 환경문제연구소 2004 환경문제연구소 논문집 Vol.8 No.-

지역주민이 참여한 시화ㆍ반월산업단지 악취배출원 조사

길인섭,김덕현,박희재,정구회 한국냄새환경학회 2006 실내환경 및 냄새 학회지 Vol.5 No.2

The objectives of this investigation are as follows: 1) To sort out places of businesses that have to do with the discharge of offensive odor 2) To find out what generates offensive odor 3) To check the current status regarding offensive odor. The investigation is held through complete enumeration of approximately two thousand businesses concerning the SihwaㆍBanwol Industrial Complex. The local residents have directly visited related businesses and performed the following investigations: 1) General status check 2) Area source 3) Point source The investigation of offensive odor is utilized by direct olfactory method in six levels. Through this method, the followings have been established as DB: Degree of offensive odor, type of odor, preventive facility status, etc. The major characteristic of this investigation is that local residents have directly visited individual businesses and checked the status of offensive odor, which opens up a possibility of mutual settlement for the reduction of offensive odor between businesses and local residents. Businesses and local residents can share a common understanding and this means a great deal. Furthermore, it is widely expected that the investigation data can be utilized as a source for presuming the origin of offensive odor in case of civil petition.