바람장 및 Fingerprint를 이용한 악취추적기법 활용가능성 평가

나경호,박용출,장영기 한국대기환경학회 2007 한국대기환경학회지 Vol.23 No.1

This study was carried out to evaluate the applicability of the odor source tracking using wind field and fingerprint as a solution tool. First of all, CALMET and HYSPLIT modeling system, and database of odor discharge companies were utilized to track odor from industrial complexes. Secondly, industrial odor fingerprint was made by listing on the 19 domestic industries, and compared with foreign data to assess the representative, and thus the similarity was 86.7%. On the modeling experiment, Sihwa industrial complex did not show any difference because the matching rates of day and night were 49.5% and 50.0%, respectively. However, the Banwol and Sihwa industrial complexes did show some differences due to odor facility density. Separately, in this study, odor samples were obtained from 10 odor discharging companies, located in the Sihwa and Banwol industrial complexes, They were compared with the results of odor tracking modeling. The matched companies were 4 of 10 by three cases of tracking, while the fingerprint and industry of odor monitoring networks and companies matched each other. Therefore, this study confirmed the approach applicability of source tracking system using the fingerprint.

악취자동측정에 의한 시화 및 반월공단의 악취특성고찰

나경호,김종보,김태화 한국냄새환경학회 2008 실내환경 및 냄새 학회지 Vol.7 No.3

The purpose of this research is to evaluate the odor exhaust characteristics of Sihwa and Banwol industrial complex during one year in 2007 by the automatic odor analyzer. As the continuous monitoring results on the 54 odor items, the highest average concentrations in two complexes were p-diethylbenzene, ammonia, toluene and methylethylketone. The items haven highest contribution rate in Sihwa and Banwol industrial complex were Dimethyl sulfide, i-Valeric acid, i-Valer aldehyde, Valeric acid, Trimethylamine and Etylmercaptan, Hydrogen sulfide, Dimethyl sulfide, Formaldehyde, Trimethylamine. When the odor concentrations converted into the total odor intensity, The percentages of hour data appeared over 3 degree of odor intensity were 0.5% (40 hr) in Sihwa station and 3.0% (210 hr) in Banwol station, respectively. Over 1 degree of odor intensity which is odor threshold value also were 68.3% in sihwa station and 82.5% in Banwol station, respectively. The highest monthly odor intensity was shown in January and February. Therefore, continuous monitoring system for odor compounds through the odor automatic station seems to be the most efficient method for investigating odor exhaust characteristics. 본 연구는 2007년 시화, 반월 악취자동측정소에서 24시간 연중 측정한 악취측정자료를 통하여 해당 지역의 악취배출특성을 평가하기 위해 수행하였다. 54개 단일악취물질에 대한 연속모니터링결과 가장 높은 연간평균농도를 보인 물질은 두 지역에서 모두 p-Diethyl benzene, Ammonia, Toluene, Methylethylketone이었다. 가장 높은 기여도를 보인 물질은 시화공단에서 Dimethyl sulfide, i-Valeric acid, i-Valer aldehyde, Valeric acid, Trimethylamine이었으며 반월공단에서는 Etylmercaptan, Hydrogen sulfide, Dimethyl sulfide, Formaldehyde, Trimethylamine로 조사되었다. 악취농도를 전체 악취강도로 변환한 결과 악취강도 3도 이상을 나타낸 경우는 시화에서 연중 0.5% (40시간), 반월에서는 3.0% (210시간)를 나타냈다. 최저악취감지농도인 강도 1이상은 시화공단에서 연중 68.3%, 반월공단에서는 82.5%로 많은 경우에서 악취가 감지되는 것으로 나타났다. 월별 악취강도경향은 여름에 높은 기존의 인식과는 달리 1~2월에 가장 높다가 갈수록 낮아지는 경향을 보인 것으로 나타났다. 이로써 악취측정소를 통해 해당지역의 악취농도를 연속적으로 모니터링하는 것이 배출특성을 파악하기 위한 매우 유효한 방법이라고 판단된다.

악취연속측정시스템의 설치 및 활용방안

나경호 한국냄새환경학회 2009 실내환경 및 냄새 학회지 Vol.8 No.4

The continuous odor monitoring system has an important role of grasping odor of weak time zone, when is difficult in direct sampling, by measuring the odorous compounds continuously for 24 hrs a day. However, the operation of the continuous odor monitoring system do not mean only a great number of analysis data being producted continuously. But also, in order to obtain high quality data, the analyzer is maintained under the optimum conditions and suitable QA/QC is necessary. The analysis data could be used as an alternative for understanding odor characteristics, odor causes, and odor reduction plan, and thus they should have a role of explaining the affection area, tracking" odor in conjunction with the odor dispersion models. Since the designated odor components in Korea Odor Prevention Act cannot reflect on all types of odorous compounds, additional compounds causing the odor problem should be analyze to comprehensive monitoring.

실내용 공기청정기 유형별 실내환경개선 성능에 대한 비교평가

나경호,손진석,성기준,장영기 한국환경영향평가학회 2005 환경영향평가 Vol.14 No.3

수질기준 법제화에 따른 물놀이형 수경시설의 수질관리방안 연구

나경호,정주용,김지수,변주형,Na, Kyung-Ho,Yong, Jeong-Ju,Kim, Ji-Soo,Byeon, Ju-Young 한국물환경학회 2017 한국물환경학회지 Vol.33 No.4

This study was conducted to propose measures of water quality management as the water criteria for waterscape facilities which have been highlighted as alternatives to wading pools in summer season was legislated. The number of public waterscape facilities has reached 290 sites in Gyeounggi province and 971 sites in South Korea in 2017. The water tank capacity of 80.3 % public waterscape facilities was less than $100m^3$. Facilities with disinfection system were only 6.5 % and facilities with filtration function were also very low at 6.9 %. Most of the waterscape facilities, about 93%, are expected to be vulnerable to complying with revised water quality criteria because they have to be disinfected by handling. Chlorine disinfectants, which are more persistent than ozone or ultraviolet sterilization methods, are more preferred. However, care should be taken when adding disinfectans because hypochlorous acid, which is an effective component of chlorine disinfectant, remains after the disinfection, but it is easily decomposed with time. For this study, ${\bigcirc}{\bigcirc}$ park floor fountain with a capacity of $63m^3$ was selected and the amount of free residual chlorine concentration was measured by injecting a certain amount of chlorine bleach. As a result, it took 5 hours to decrease from the water quality standard of 4 mg/L to 0.04 mg/L. If the waterscape facility is operated for 7 to 8 hours, the chlorine bleach should be re-injected after 5 hours. In addition, the problem of pH increase due to the input of chlorine disinfectant is expected, and the neutralization method using vinegar was proposed.

전국 및 경기도를 대상으로 한 토양오염실태조사의 효율성 제고방안

나경호,김종찬,Na, Kyung-Ho,Kim, Jong-Chan 한국지하수토양환경학회 2008 지하수토양환경 Vol.13 No.6

본 연구는 전국 및 경기도에서 수행한 토양오염실태조사를 평가하고 그 효율성을 제고하기 위하여 수행하였다. 2002년${\sim}$2007년 동안 경기도 및 전국의 실태조사결과 오염발견율은 전국이 2.7%, 경기도가 평균 1.9%를 나타내 일본, 미국에 비해 낮은 발견율을 나타내었다. 또한 전국의 중금속과 석유류 기준초과물질 구성 비율이 89.8%와 8.9%였는데, 이는 중금속을 대상으로 하는 표토 조사대상이 38%인 점과 석유류를 대상으로 하는 심토의 조사비중이 62%를 나타낸 것과 모순된 현상으로 심토에 대한 조사방법의 개선이 요구된다. 오염 발견율에 영향을 미치는 요소로 지점선정단계, 시료채취단계, 시료분석단계를 들 수 있으며 이중 가장 중요한 지점선정단계에 있어서 우선순위선정을 위한 방침을 제시하였다. 부연하여 사후관리를 위한 방안으로 녹색업체 부여 등의 인증 제도를 건의하였다. The purpose of this research is to evaluate the efficiency of soil pollution investigation conducted at South Korea and Gyeonggi-do, and to drive the way to improve its efficiency. The average pollution discovery rates in the soil pollution investigation were 2,7% in South Korea and 1.9% in Gyeonggi-do respectively during the last six years (2002${\sim}$2007), which the discovery rates were lower than those of Japan and United States of America. The exceeding rate of the Korea soil pollution standard of the heavy metal and petroleum compounds in the soil pollution investigation were 89.8% and 8.9%, respectively in the whole country. The investigation rate of topsoil for heavy metal and deepsoil analysis for petroleum compounds analysis were 38% and 62% respectively. This show contradictory result which is demanded the improvement of investigation method on the deep soil. The main steps affecting the discovery rate of soil pollution were site selection step, sampling step and analysis step. We suggested the the guideline of priority on the site selection step which was the most important step. Also, the certificate need to be provided to the companies which have lower soil pollution degree after conducting the soil pollution investigation.

Finger Print를 이용한 악취 추적 기법 활용가능성 평가

나경호,손진석,장영기 한국대기환경학회 2006 한국대기환경학회 학술대회논문집 Vol.- No.-

왕수분해와 결합한 자동분석법의 토양 중 불소시험 유효성 연구

나경호,윤인철,이정복,Na, Kyung-Ho,Yun, In-Chul,Lee, Jung-Bok 한국지하수토양환경학회 2010 지하수토양환경 Vol.15 No.5

The purpose of this research is to check the validation of an auto-analysis method combined with aqua regia digestion apparatus for improvement of water distillation method used as a fluorine test of soil. Fluorine contents of CaO used in the pretreatment course of water distillation method were 120 mg/kg ~ 5,064 mg/kg at the blank test, which was exceeded up to maximum 12.5 times of the soil standard, so it was estimated due to a effect of fluorine existing as impurities of CaO. The recovery test of the same samples indicated that water distillation method and auto-analysis method were 134.5mg/kg and 161.7mg/kg respectively, the recovery ratio of the latter was 16.8% higher than the formal. The validation test of two methods satisfied the standard, but auto analysis method was excellent more than distillation method. Also, auto analysis method could save a analysis time up to maximum 4.7 times by comparison with water distillation method.

경기도 악취관리지역의 악취실태조사 평가

나경호(Kyung-Ho Na),오천환,권보연 한국냄새환경학회 2010 실내환경 및 냄새 학회지 Vol.9 No.4

2005년부터 5년 동안 경기도내 악취관리지역인 4개 산단에서 실시한 악취실태조사와 악취자동측정망 결과를 비교 평가한 결과 경기도내 4개 산단의 복합악취농도는 2006년 이후 점차 감소한 것으로 나타났으며 복합악취기준초과사례는 반월산단 9회, 시화산단 7회, 반월도금, 아산산단 각 1회로 나타났다. 개별 악취성분은 매년 초과성분이 달랐으나 황화수소의 경우는 2006년, 2007년과 2009년에 지속적으로 초과하였다. 한편, 복합악취와 악취지정물질이 기준초과한 시점이 일치한 경우는 전체의 40.9%로 이외의 경우는 조사대상 지정물질 이외에서 기인한 것이거나 정도관리의 부족에서 기인한 것으로 추정된다. 복합악취결과와 민원발생과의 상관성(R²)은 시화산단 0.434, 반월산단 0.878, 아산산단 0.434로 나타나 일정한 상관성을 반영한 것으로 나타났다. 한편, 복합악취와 악취측정망 자료와의 상관성(R²)은 시화산단 0.145, 반월산단 0.964로 나타나 시화산단의 경우 복합악취에 대한 측정지점이나 정도관리에 대한 검토가 일부 요구된다. When it evaluates the odor actual investigation of the odor control restricts in Gyeonggi-do during 2004 and 2009 year, The complex odor at 4 industrial complexes was appeared gradually to be decreased after 2006 year, Excess cases of standard in Banwol, Sihwa, Banwol plating, and Asan industrial complexes were 9 times, 9times, one times and one times respectively, Excess odor substances changed every year in Sihwa and Banwol industrial complex, but Hydrogen sulfide is exceeded odor emission standards in 2006, 2007, 2009 year continually. On the other hand, the cases that complex odor and specified odor substances were exceeded simultaneously were 40.9% of total, and the rest of cases were estimated as to be caused by the other appointment compounds or the lack of quality control. The corelation (R²) of complex odor concentration and the number of resident complaint was 0.434 at Sihwa industrial complex, 0.878 at Banwol industrial complex and 0.434 at Asan industrial complex. also, corelation (R²) of complex odor and data of odor auto monitoring was 0.145 at Sihwa industrial complex and 0.964 at Banwol industrial complex. therefore, Sihwa industrial complex is partially demanded the check of sampling site and the quality control on the complex odor.

농도실측 및 연료 성분조성에 의한 중소형 RPF 소각시설의 온실가스 배출계수 개발

나경호(Kyung-Ho Na),송일석(Il-Seok Song),최시림(Si-Lim Choi),유재인(Jae-In Yoo),박익범(Ik-Beom Park),김진길(Jin-Gil Kim) 한국대기환경학회 2012 한국대기환경학회지 Vol.28 No.4