통계분석을 이용한 광주지역 대기오염도

서광엽,백계진,신대윤,Seo Gwang Yeob,Paik Ke Jin,Shin Dae Yewn 한국환경보건학회 2004 한국환경보건학회지 Vol.30 No.5

We investigate changing characteristics and concentration distribution of ambient air quality using data from which obtained local ambient air monitoring network and local meterological measuring sites in Gwangju area from January to December in 2003. Sulfur dioxide ($SO_2$) showed that increase from 8 AM and decrease in 6 PM but, it was not drastically changed concentration. it also 0.010 ppm in 1995 from at this time it's decrease step by step and than some constant in year 2001 to 2003. Nitrogen dioxide ($NO_2$) concentration was showed highest peak in 10 AM and increase again at 6 PM. And also it showed peak concentration (0.026 ppm) in 2001 and decreased from after that times. Ozone was showed peak concentration in 1 PM and Nitrogen dioxide was ditto in 10 AM from this data, we can conclude that this two article ws showed chemical reaction by 3 to 5 hours. There was no case of Ozone alarm in Gwangju area since 1995, but it showed highest ozone concentration (over 0.070 ppm) in May and June of the year and 2 to 4 PM of the day and sometimes it showed increase at the dawn. Ozone product optimum condition was that air temperature is over $25^{\circ}C$, no rain and increase solar radiation (over $20MJ/m^2$) and no wind or below 2.0 m/s wind speed.

알루미늄 부식을 적용한 활성슬러지법에서 질소 및 인 제거

최형일,정경훈,박상일,백계진,Choi Hyung Il,Cheong Kyung Hoon,Park Sang Il,Paik Ke Jin 한국환경보건학회 2005 한국환경보건학회지 Vol.31 No.2

A laboratory experiment was performed to investigate simultaneous removal of phosphorus and nitrogen from raw sewage by intermittently aerated activated sludge process packed with aluminum and silver plate. Two continuous experimental process, i.e. an intermittently aerated activated sludge process, and an intermittently aerated activated sludge process with an aluminum and silver plate packed into the reactor were compared. The pitting corrosion of aluminum does not affect the performance of the biological treatment. The amounts of Al eluted from aluminum plate 17 mg to 60.6 mg in this experimental conditions, and Al/P mole ratio were from 3.31 to 11.25. The total nitrogen removal efficiency in Run E were $60.6\%$ at the HRT of 12 hours. The effluent $PO_4-P$ concentration as low as $1.0\;mg/\iota$ could have been obtained during the continuous experiment in Run E at HRT of 12 hours.

토양컬럼을 이용한 합성폐수중의 암모니아성질소 제거

박상일,정경훈,김해연,백계진,Park San Ill,Cheong Kyung Hoon,Kim Hai Yeon,Paik Ke Jin 한국환경보건학회 2005 한국환경보건학회지 Vol.31 No.4

The purpose of this investigation was to evaluate removal efficiency of $NH_4-N$ using the soil column. Soil, oyster shell and natural zeolite were used as a supporting media of soil column. Removal efficiencies of $NH_4-N$ were $35.9\%,\;41\%\;and\;93.4\%$ for the soil column packed with soil, natural $zeolite(20\%)$ and oyster $shell(20\%)$ at HRT of 72 hours, respectively. The addition of $20\%$ oyster shell to the soil accelerated nitrification in soil column. The influent ammonia nitrogen was mostly converted to nitrate nitrogen in the soil column and little ammonia nitrogen was found in the effluent. When the influent $NH_4-N$ concentration was 200 mg/l, the NIL-N removal was decreased at HRT of 48 hours, while nitrification was significantly increased after mechanical aeration. It was suggested that nitrification from higher $NH_4-N$ concentration was more affected by aeration in soil column process. The number of nitrifiers was approximately in a level of about $10^6\;MPN/g{\cdot}soil$ in the soil column mixed with oyster shell ($20\%$).

광주지역 먼지 특성에 관한 연구

서광엽,김승호,이경석,민경우,서희정,강영주,백계진,문용운,신대윤,Seo, Gwang-Yeob,Kim, Seung-Ho,Lee, Kyoung-Seok,Min, Kyoung-Woo,Seo, Hee-Jeong,Kang, Yeong-Ju,Paik, Ke-Jin,Moon, Young-Woon,Shin, Dae-Yewn 한국환경보건학회 2010 한국환경보건학회지 Vol.36 No.2

In this study, ambient particulate matter ($PM_{2.5}$ and $PM_{10}$) levels were measured and their chemical and physical properties were characterized. Two sites in Gwangju were sampled once a month from December 2008 to November 2009. The annual mean concentrations of $PM_{2.5}$ and $PM_{10}$ were $26.9\;{\mu}g/m^3$ and $46.3\;{\mu}g/m^3$, respectively, in Nongseongdong and $26.1\;{\mu}g/m^3$ and $44.8\;{\mu}g/m^3$, respectively, in Duam-dong. $PM_{2.5}$ levels were 1.8 times higher than the USA Environmental Protection Agency (EPA) national ambient air quality standard for $PM_{2.5}$ ($15\;{\mu}g/m^3$). The average $PM_{2.5}/PM_{10}$ ratio of 0.58 suggested that $PM_{2.5}$ is a significant component of the ambient particle pollution. The order of concentration of metallic elements in $PM_{2.5}$ and $PM_{10}$ was Si > Al > Fe > Zn > Pb > Cu > Mn. Cd was not detected. The earth crustal enrichment factors for Cr, Cu, Pb and Zn in $PM_{2.5}$ were higher than those in $PM_{10}$. When the earth crustal enrichment factors for Cr, Cu, Pb and Zn were higher than 10, this suggested influence from anthropogenic sources. The soil contribution ratios for $PM_{2.5}$ and $PM_{10}$ were 11.3% and 16.4%, respectively, and were higher in the fall and winter. Anions (${SO_4}^{-2}$, ${NO_3}^-$, and $Cl^-$) comprise 28.7% of $PM_{2.5}$ and 21.4% of $PM_{10}$. The correlation coefficient of Zn-Fe, Mn-Cu, Fe-Cu and Fe-Mn in $PM_{2.5}$ was high in the sampling sites, and metallic elements were primarily from anthropogenic sources such as fuel combustion and vehicle emissions.

광주지역 다중이용시설에서 실내공기질 농도와 상관성 분석

이대행(Dae Haeng Lee),이세행(Se Haeng Lee),배석진(Seok Jin Bae),김난희(Nan Hee Kim),박강수(Kang Soo Park),김도술(Do Sool Kim),백계진(Ke Jin Paik),문용운(Yong Woon Moon) 大韓環境工學會 2010 대한환경공학회지 Vol.32 No.11

광주지역 다중이용시설 54개소와 공중이용시설 15개소에 대한 입자상물질(미세먼지, 석면), 가스상물질(CO₂, CO, NO₂, HCHO, Rn, VOCs), 총부유세균의 농도에 대해서 조사하고 각 항목간의 상관성분석을 실시하였다. 미세먼지(PM10)는 실내주차장에서 평균 69.2 μg/m3로 가장 높았고, 이어서 보육시설, 대규모점포, 지하역사 순이었다. 일산화탄소는 실내주차장에서 평균 2.7 ppm으로 가장 높았고, 이산화탄소는 의료시설에서 604.1 ppm으로 가장 높았으며, 이산화질소는 실내주차장에서 0.036 ppm으로 가장 높았다. 포름알데하이드는 54개 전체시설에서 기하평균 3.6 μg/m3이었으며, 미술관은 631.8 μg/m3로 가장 높았다. 휘발성유기화합물질(VOCs)은 모든 시설에서 기하평균 24.14 μg/m3이었고, 이 중 톨루엔이 15.30 μg/m3로 가장 높았으며, 이어서 자일렌, 에틸벤젠, 벤젠, 스티렌 순으로 조사되었다. 총부유세균은 찜질방에서 평균 625.3 CFU/m3로 가장 높았고, 보육시설, 의료기관, 대규모점포 순이었다. 석면은 보육시설에서, 라돈은 미술관에서 높은 것으로 조사되었다. 보육시설에서 미세먼지와 총부유세균은 로그함수의 결정계수(R2) 0.5332로 양의 상관성을 보여주었고, 이산화탄소와 일산화탄소는 보육시설과 실내주차장에서 양의 상관성을 보여주었다. 휘발성물질간의 상관식은 모든시설에서 직선함수보다는 로그함수에 의해 잘 설명되었다. The purpose of this study is to investigate the concentration levels of particle materials (PM10, asbestos), gas materials (CO₂, CO, NO₂, HCHO, Rn, VOCs) and total suspended colony (TSC), and the correlations among these materials in indoor air quality of 54 multiple-use facilities and 15 public-use facilities of Gwangju. The highest mean concentration of PM10 was 69.2 μg/m3 at indoor parking place, followed by childcare facilities, large commercial building and subway station building. The highest mean concentration of CO was 2.7 ppm at indoor parking place and that of CO₂ was 604.1 ppm at medical service facilities. The highest mean concentration of NO₂ was 0.036 ppm at indoor parking place. The geomean concentration of HCHO was 3.6 μg/m3 in all facilities and the highest was 631.8 μg/m3 at art gallery. The geomean concentration of VOCs (5 species) was 24.14 μg/m3 in all facilities and toluene was the highest material of 15.3 μg/m3, followed by xylene, ethylbenzene, benzene and styrene. The highest mean concentration of TSC was 625.3 CFU/m3 at jjimjilbang, followed by childcare facilities, medical service facilities and large commercial building. The highest of asbestos was 0.0072 each/cc at childcare facilities and that of radon was 1.41 pCi/L at art gallery. PM10 showed positive correlations to TSC with R2 = 0.5332 by lognormal equation at childcare facilities. CO₂ showed positive correlations to CO at childcare facilities and indoor parking place. Lognormal equation fitted to the VOCs data more than normal equation in all facilities.

산성강하물이 주암호 수질에 미치는 영향

신대윤 ( Dae Yewn Shin ),문옥란 ( Ok Ran Moon ),윤미란 ( Mi Ran Yoon ),백계진 ( Ke Jin Paik ),김남종 ( Nam Jong Kim ),강공언 ( Gong Unn Kang ) 한국물환경학회 ( 구 한국수질보전학회 ) 2005 공동 추계학술발표회 Vol.2005 No.-

포스터 발표 : 수질관리 ; 산성강하물이 주암호 수질에 미치는 영향

신대윤 ( Dae Yewn Shin ),문옥란 ( Ok Ran Moon ),윤미란 ( Mi Ran Yoon ),백계진 ( Ke Jin Paik ),김남종 ( Nam Jong Kim ),강공언 ( Gong Unn Kang ) 대한상하수도학회 2005 공동추계 학술발표회 논문집 Vol.2005 No.-

광주지역 기온변화 예측과 CO₂, CO, 상대습도와의 상관성분석

이대행(Dae Haeng Lee),정원삼(Won Sam Jeong),이세행(Se Haeng Lee),박강수(Kang Soo Park),김난희(Nan Hee Kim),김도술(Do Sool Kim),백계진(Ke Jin Paik),박종태(Jong Tae Park) 大韓環境工學會 2009 대한환경공학회지 Vol.31 No.11

광주지역 기상자료를 이용하여 기온변화를 예측하고, 광주지역의 이산화탄소, 일산화탄소, 상대습도의 상관성연구를 실시하였다. 2008년까지 48년간 광주지역 전체 평균기온은 13.5℃이며, 2108년까지 100년간 2.7℃정도 증가할 것으로 예측되었다. 안면도지역에서 이산화탄소 연평균 농도는 1999년과 2008년에 각각 370.7 ppm과 391.4 ppm으로서 기온의 증가에 영향을 주었다. 1997년부터 2008년까지 광주의 평균기온은 14.2℃로 나주, 담양, 화순, 장성지역 보다 훨씬 높았다. 2108년경 광주의 봄 시작일은 1월 중순 이전, 여름의 시작일은 5월 중순, 가을의 시작일은 10월 중순, 겨울의 시작일은 12월 말경으로 전망되었다. 48년간 평균상대습도는 71.3%로 7월이 가장 높았으며, 해가 지날수록 감소하여 연도와는 반대현상을 보여주었다. CO₂와 CO는 양의 상관도(0.87)를 보여주었고, 조사기간 중 CO₂ 평균 농도는 457 ppm으로 우리나라 배경농도인 안면도의 397.3 ppm(2008)에서 보다 65.6 ppm이나 높았다. CO₂는 CO(0.87)와 상대습도 (0.48) 모두에 대하여 양의 상관성을 보여주었다. The ambient temperature and concentration of carbon dioxide in Gwangju and the reducing method of temperature, air pollutants were investigated using the atmospheric data in Gwangju. Average ambient temperature (Ta_ave) was 13.5℃ during 1961 to 2008. The temperature was predicted as increasing of about 2.7℃ in 2108 after 100 years using the trend line of regression equation. Carbon dioxide was 370.7 and 391.4 ppm at Anmyundo, in 1999 and 2008, respectively, showing proportionally increased as ambient temperature. The temperature at Gwangju, 14.2℃ during 1997 to 2008, was a little higher than at neighboring counties as Naju, Damyang, Hwasoon, and Jangsung. In Gwangju, Spring will start in mid-January of 2108, Summer in mid-May, Autumn in mid-October, and Winter in last-December. The average relative humidity in the air (RHa_ave) was gradually decreased as the temperature inversely increased. The average CO₂ was 457 ppm, which is 65.6 ppm higher than that in Anmyundo, korean background area of CO₂ in 2008. Carbon dioxide showed positive correlation, both of them, with carbon monoxide (0.87) and relative humidity (0.48).

광주지역 음용 지하수 중 미네랄성분의 분포

안상수 ( Sang Su An ),강영주 ( Yeong Ju Kang ),위환 ( Hwan Wi ),김종민 ( Jong Min Kim ),이윤국 ( Youn Goog Lee ),박옥현 ( Ok Hyun Park ),박종태 ( Jong Tea Park ),백계진 ( Ke Jin Paik ) 한국환경분석학회 2009 환경분석과 독성보건 Vol.12 No.3

Samples of ground water using as potable resources were collected in the five districts of Gwangju city.. Anionic and cationic substances in ground water were monitored to review the compliance as a drinking water source. Average distribution of anionic ingredients in the ground water by district was Donggu>Bukgu>Namgu>Seogu>Gwangsangu. Average distribution of inorganic substances on the ground water by district was Seogu>Donggu>Bukgu>Namgu>Gwangsangu. The highest contents of anionic substance were detected in Donggu and the lowest in Gwangsangu. The contents of anionic matter by district was Cl->SO4(2-)>NO3-N>F-. The highest contents of minerals were in Donggu. The result of contents of cationics by area was Na>Ca>Mg>K. There was close correlation among the minerals (Na, Ca, Mg, K). In case of Na, Ca, Mg and K, the results of this study were satisfied with the water standards of UK and twice higher than the drinking water sold in Gwangju.

하수처리 방류수 BOD5 중 NOD 기여율에 관한 연구

민경우 ( Kyoung Woo Min ),정원삼 ( Won Sam Jeong ),이대행 ( Dae Haeng Lee ),서광엽 ( Gwang Yeob Seo ),김승호 ( Seung Ho Kim ),백계진 ( Ke Jin Paik ),문용운 ( Young Woon Mun ) 한국환경분석학회 2011 환경분석과 독성보건 Vol.14 No.1

In this study, BOD5, CBOD, NOD, T-N etc. were analyzed for influent and effluent samples collected from two sewage treatment plants(STPs) and for river water samples. The sampling took place from March to October, 2010. The NOD contribution to BOD5 varied with the sampling site, NOD accounts for 10~15% of BOD5 for STP influent, 45~56% for STP effluent, 3~26% for the stream water, respectively. The contribution of NOD to BOD5 also varied with water temperature, the contribution ratio was about 20% during the summer (July-September), however NOD portion of BOD5 was 50%~60% during the spring and the fall. In addition, the experimental NOD values for STP effluent were compared to theoretical NOD ones. The ratio of theoretical value to experimental one was 0.89~1.21 implying that the experimental value would be very close to the theoretical one. BOD5 and various types of nitrogen were analyzed for 10 days. Some samples showed complete nitrification and some did not. One sample showed nitrification immediately after 5 days of incubation.