간선도로의 입지와 기상특성에 따른 주거지의 대기오염 물질분포변화에 관한 연구

권우택,김형철,이재영 대한국토·도시계획학회 2002 國土計劃 Vol.37 No.1

The purpose of this study is to analyze the distribution pattern of the air pollution materials in atmosphere in relation to time and space scales distribution of the traffic volume and meteorology factors and to suggest alternatives for main streets construction to minimize the influences of air pollution for city. The Sung-Nam city was selected to analyze the detrimental effects of air pollution in relation to meteorology factors. The main results of this research are as follows; First, the eastern part of The Sung-Nam city which is a residential area was influenced directly by air pollution materials because it was located in diffusion-influenced direction whereas the western part of The Sung-Nam city which is a green-belt area was influenced indirectly. The results of simulation showed that total quantity distribution of winter season was the highest 446,677ppb and spring season was the lowest one as 63,568ppb for carbon monoxide. Second, when temporal wind direction was investigated to examine the diffusion of air pollution materials, a southwest wind was apparent from 12:00 PM and 18:00 PM in spring season. When the difference between the highest and lowest temporal distribution under the same atmospheric condition in a day was analyzed for total quantity, the difference was 104,684ppb for carbon monoxide, 10,409ppb for hydrocarbon, and 34,100ppb for nitrogen oxide. It was revealed that the concentration of air pollution materials was basically determined by the traffic volume.

초등학교 세면시설의 적정 설치에 관한 연구

권우택,이우식,Kwon, Woo-Taeg,Lee, Woo-Sik 한국환경보건학회 2011 한국환경보건학회지 Vol.37 No.6

Objectives: Students in elementary schools usually wash their hands in a washstand. However, little attention is paid to the washstand itself. Today, the importance of personal sanitation and hygiene is greatly emphasized. Therefore students' parents and the public are growing increasingly interested in accessibility to washstands by elementary school students in their schools. Methods: With respect to this study, a survey of students and teachers inelementary schools was performed on the installation of washstands in order to determine the proper number of washstands per school. Results: The results show that 1.1 boys (per class) need a washstand, while 1.8 girls (per class) do so in order to maintain a 50% level of crowdedness. By of the regression equation, to maintain 50% congestion (50% of all students feel congestion) there should be 18.5 boys, and the 15.76 girls per washstand. Table 3 is based on the above results, the number of students per washstand (x) and congestion (y), separated by gender according to the results of regression analysis, the correlation of male models in the linear regression analysis and correlation of girls in the regression equation can be obtained. The linear regression fit of less than 0.7 determines that the coefficients of determination are 0.5399 and 0.4195, respectively. Significance was much smaller. Also, according to the simulation using the diffusion model, with 29 students per class more than one washstand should be provided in a school. Girls (per class) need 0.7 more washstands than boys (per class). Conclusions: More washstand facilities for girls than boys are needed. If the target is based on school class size two washstands should be installed. Finally, guidelines and/or standards in the Schools Health Act of Korea forin elementary school washstands is considerably needed.

지하상가 실내외 및 지하철의 온도와 습도에 따른 Formaldehyde 거동 ( 2 ) ( Behavior of Formaldehyde Concentration by Temperature and Humidity of Indoor and Outdoor in Underground Shopping Center and Subway ( 2 ) )

권우택 대한환경위생공학회 1994 대한환경위생공학회지 Vol.9 No.1

대학원생을 위한 연구윤리 수강메뉴얼

권우택 한국유통학회 2022 International Forum on Business Convergence (IFBC) Vol.2022 No.-

성남시 대기부유분진중 호흡성 분진에서 중금속의 농도 및 입경분포 ( The Heavy Metals and Size Distribution of Respirable Suspended Particulate Matter at Sungnam City )

권우택,유영식 대한환경위생공학회 1994 대한환경위생공학회지 Vol.9 No.1

복합악취 숙련도 평가를 위한 시험용 시료로서 현장시료의 타당성과 이를 이용한 숙련도 평가

권우택,김선태,이석준,홍석영,김명옥,정인영,한진석,류희욱 한국냄새환경학회 2013 실내환경 및 냄새 학회지 Vol.12 No.3

본 연구에서는 악취숙련도 시험을 위한 PTM 물질로 현장시료의 적용가능성을 평가하기 위하여 하수처리장에 채취한 현장시료의 안정성과 채취 균질성을 조사하였다. 또한 현장시료를 PTM으로 사용하여 71개 악취검사기관의 공기희석관능법의 숙련도 시험을 실시하였다. 다양한 설정값(참여기관 또는 기준기관의 악취지수 평균값이나 중위수)를 기준으로 3가지 Z-score 평가법(표준편차 이용한 Z-score, Robust 표준편차를 이용한 Z-score, 목표표준편차를 이용한 Z-score)으로 숙련도의 통계적 분석을 하였다. 하수처리장 농축조에서 채취한 현장시료는 2일 동안 희석배수의 변화 없이 안정적이었고, 참여기관을 4 그룹으로 나누어 순차적으로 채취한 현장시료가 균질한 것으로 평가되었다. 이는 현장악취시료가 악취 숙련도 평가를 위한 PTM 물질로 적용 가능함을 의미한다. 숙련도 시험결과의 통계적 분석을 통해 참여기관의 숙련도 만족비율은 Z-score 평가법이나 설정값의 기준(참여기관 또는 참고기관으로 선택한 3개 대학의 악취지수 평균값이나 중위수) 보다는 목표표준편차(S*ref)값에 의존하였다. 숙련도 만족비율은 S*ref 값이 증가함에 따라 증가하였으며, PTM 시료의 분석결과에 대한 변동계수(CV) 0.13에 해당하는 목표표준편차값에서 숙련도 만족비율은 약 93∼96% 수준이었다. This study was carried out to provide the stability and the feasibility of field odor samples as proficiency testing materials (PTMs) for air dilution olfactory method. Seven-one olfactometry laboratories participated in the proficiency testing. Interlaboratory comparison was carried out by using a field odor samples taken from a sewage thickener as PTMs. Statistics for quantitative results were calculated using three Z-score methods (standard deviation Z-score, Robust Z-score, target standard deviation Z-score) based on either average or median for the participants and three-reference laboratories results. The dilution to threshold of the field samples was constant for 2 days. The difference of dilution to threshold between the samples taken by all of participants was not statistically significant. It means that the field odor sample is feasible as one of PTMs. Satisfactory performance of participants depend on target standard deviation (S*ref) rather than on Z-scores and the creteria of assigned values such as median and average. The satisfactory performance increased with increasin S*ref, and It was 93-96% of participants at a coefficient of variation of .0.13.

태양광(太陽光) 산업(産業)에서 발생(發生)하는 Si/SiC 혼합물(混合物)의 소결특성(燒結特性) 연구(硏究)

권우택,김수룡,김영희,이윤주,김종일,이현재,오세천,Kwon, Woo Teck,Kim, Soo Ryong,Kim, Younghee,Lee, Yoon Joo,Kim, Jong Il,Lee, Hyun Jae,Oh, Sea Cheon 한국자원리싸이클링학회 2013 資源 리싸이클링 Vol.22 No.3

태양광 산업에서 폐기물로 발생하는 Si/SiC 혼합슬러지를 재활용하는 것은 환경과 경제적인 측면에서 중요하다. 이러한 재활용을 위해서 Si/SiC 혼합물의 소결특성을 분석하는 것이 필요하다. 본 연구에서는 SiC함량에 따른 소결특성을 살펴보기 위해서 공기분급기를 이용하여 Si/SiC 혼합물에서 SiC 함량을 변화시켰다. SiC 함량이 변화된 Si/SiC 혼합물에 카본블랙, 점토 및 수산화알루미늄을 첨가하여 소결하였다. Si/SiC 혼합물의 특성분석 및 첨가제 변화에 따른 Si/SiC 혼합물 소결체의 특성변화를 SEM, XRD, 입도분석 및 겉보기 밀도변화를 측정하여 분석하였다. SEM 및 입도분석결과, SiC 95% 시료의 경우에는 원시료 및 SiC 75% 시료와 비교하여 1 ${\mu}m$ 크기 이하의 미립입자가 크게 감소하여 공기분급을 통한 미세입자 제거가 SiC 함량 제어에 효과가 있음을 확인할 수 있었다. 수산화알루미늄을 첨가함에 따라서 ${\beta}$-Cristobalite 가 감소하고 mullite 생성량이 증가하였으며, 카본블랙의 첨가가 소결특성 향상에 영향을 주는 것을 확인하였다. The recycling of the Si/SiC mixture sludge obtained from solar cell industry is very significant, environmentally and economically. The sintering characteristics of Si/SiC mixture sludge was studied for the purpose of recycling. In this study, to understand sintering behavior, SiC content in the Si/SiC mixture was controlled using an air separator. Various Si/SiC mixtures having different SiC contents were sintered using carbon black, clay and aluminum hydroxide as sintering aids. Physical properties of Si/SiC mixture and sintered bodies have been characterized using SEM, XRD, particle size analyzer and apparent density measurement. SEM and particle size analysis result confirmed that the fine particles less than 1 ${\mu}m$ decreased or removed more effectively through the air separator in the case of 95% SiC sample compared than the case of 75% SiC sample or original SiC sample. Further, with addition of the Aluminum Hydroxide, ${\beta}$-cristobalite phase gradually decreased while mullite phase gradually increased. The addition of the carbon black improved the sintering characteristics.

유해오염물질 처리를 위한 흡연부스의 설계

권우택,권이승,이우식 한국화재소방학회 2017 한국화재소방학회논문지 Vol.31 No.6

The purpose of this study was to develop a Eco smoking booth that can effectively reduce hazardous pollutants generatedduring smoking and evaluate the efficiency and effectiveness of removing hazardous pollutants. The design and manufactureof an eco-friendly automatic smoking booth equipped with deodorizing facilities, such as inlet - HEPA filter - electrostaticprecipitator (EP) - impregnated activated carbon - exhaust port, etc., and the efficiency of removing hazardous pollutants frominside and outside was measured and evaluated. The complex odor removal efficiency was 95.37% inside the smoking booth,and 97.38% at the exit of the preventive facility. The carbon monoxide removal efficiency was 94.25% in the inside and98.32% in the outlet. In addition, the removal efficiency of particulate matter, (PM1, PM2.5, and PM10) inside the smokingbooth was 98.59%, and 98.85% at the outlet. The total volatile organic compounds (TVOCs) decreased from 26,000 μg/m3to 5,203 μg/m3 in the smoking booth, resulting in 79.99% removal efficiency. After the ventilator was operated, the measuredeffluent concentration was 5,019 μg/m3, and the removal efficiency was 80.70%. Therefore, the smoking booth designed andmanufactured through this study can be applied to the removal of harmful pollutants even in the small working environmentin the future. 본 연구는 흡연시 발생되는 각종 유해오염물질을 효과적으로 저감할 수 있는 친환경 흡연부스를 제작하고, 유해물질의 제거효율 및 효과를 평가하는 것이다. 유입구-HEPA필터-전기집진기(EP)-첨착활성탄-배출구 등의 탈취설비를갖춘 친환경 자동 흡연부스를 설계 및 제작하여, 흡연연기에 의한 유해오염물질의 제거효율을 측정 및 평가하였다. 측정방법으로는 내부의 배경농도, 설비 가동 시 배출구 농도, 10분 후 흡연부스의 농도를 측정하고, 평가항목으로는복합악취, 일산화탄소, 미세먼지(PM1, PM2.5, PM10), 총휘발성유기화합물(TVOCs)을 대상으로 하였다. 복합악취 제거효율은 흡연부스 내부에서는 95.37%, 방지설비통과 배출구에서는 97.38%로 우수하였다. 일산화탄소 제거효율은 내부에서는 94.25%, 배출구에서는 98.32%로 나타났다. 또 흡연부스 내부에서의 미세먼지 제거효율은 98.59%이며, 배출구에서는 98.85%로 나타나 미세먼지 제거효율은 매우 우수한 것으로 나타났다. TVOCs는 흡연부스 내부에서는26,000 μg/m3에서 5,203 μg/m3로 감소하여 79.99%의 제거효율로 나타났고, 환풍기 가동 후 방지설비 배출구에서는5,019 μg/m3로 측정되어 제거효율은 80.70%로 나타났다. 따라서 본 연구를 통하여 제작, 설계된 흡연부스는 향후 소규모 작업환경 내에서도 각종 유해오염물질들을 제거하는 용도로 적용할 수 있을 것으로 생각된다.

사람들의 건강권 확보를 위한 미세먼지 방지 안면마스크 여과효율 연구

권우택,정민재,김범수,이우식,권이승 한국냄새환경학회 2020 실내환경 및 냄새 학회지 Vol.19 No.2

In this study, we evaluated the filtering effect of the fine dust mask. Our objective research has secured credibility in the private sector. The performance of domestic fine dust masks is evaluated by three dust collection efficiencies, inspiratory resistance, and leakage rate according to KF grade in the health mask standard guidelines issued by the Ministry of Food and Drug Safety. Based on this, eight types of fine dust masks were evaluated for dust collection efficiency and face intake resistance. All masks showed good performance as the collection efficiency was 90%. The higher the KF grade, the higher the collection efficiency, but the inspiratory resistance had no correlation with the grade. According to the manufacturer's operation method, masks below the standard value may be distributed. Masks that are currently on the market have shown results that can be trusted. However, we hope that the system will be improved to validate whether the masks that meet the threshold are still being distributed.

Sliding Arc Plasma를 이용한 석유공장에서의 BTX 처리효율에 관한 연구

권우택,권이승,이우식 한국화재소방학회 2015 한국화재소방학회논문지 Vol.29 No.6

This research examines the removal efficiency of benzene, toluene, xylene (BTX) and total volatile organic compounds(TVOCs) by flowing VOCs, which are generated at a petrochemical complex in the Ulsan area, in a sliding arc plasma(SAP) reactor. The SAP reactor process is composed of 5 steps and the analysis was conducted using a BTX detector andTVOC measuring instrument. The removal efficiency of BTX was better at high concentration than at low concentrationand the emitted TVOC concentration increased in later steps of the reactor. In addition, the removal efficiency improved,as the flow velocity increased. The maximum permissible concentration of TVOCs in the first step was about 481 ppmand showed over 94.83% efficiency when it was operated in the 2nd step at concentrations beyond 481 ppm. Therefore,there are many factors for improving the removal efficiency of SAP reactors at low concentration and measures should beprepared according to the application method for the various types of industrial reactors. 본 연구는 울산소재 석유공장의 건조시설에서 발생하는 가스를 스크러버(Scrubber)로 최종 처리하여 배출되는 저 농도의 유해가스와 산 처리 시설에서 발생되는 고 농도로 발생하는 유해가스를 대상으로 연구하였다. 공정별로 벤젠(Benzene), 톨루엔(Toluene), 자일렌(Xylene) 및 총휘발성유기화합물(TVOCs)을 대상으로 측정하였으며 농도 측정은TVOCs 측정기와 GC-MSD를 이용하여 SAP 전 · 후단의 TVOCs와 BTX의 농도를 측정, 분석하여 제거효율을 평가하였고, SAP 반응기는 5 단계로 구성하여 실험을 수행하였다. 슬라이딩 아크 프라즈마(slidind arc plasma) 반응기의 단수별에 따른 TVOCs 농도 변화는 유입 TVOCs 농도의 변화에 따른 처리효율 결과 481 ppm 미만에서 94.83%, 481ppm 이상일 경우에는 1단에서는 89.07% 2단에서는 약 91% 이상으로 처리되는 것을 확인할 수 있었다. 본 연구의 결과는 석유화학공정 및 제조시설에서 SAP 공정을 통한 VOCs 제거에 대한 연구 및 기술개발의 기초가 되어 VOCs의보다 안정적인 처리와 다양한 기술개발에 효과가 있을 것으로 기대해 본다.