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RISS 인기검색어
- 검색키워드
- 저자 : 이해훈 ( Hae Hun Lee ) (검색결과 2 건)
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오은하 ( Eun Ha Oh ),임항선 ( Hang Seon Lim ),안길원 ( Gil Won Ahn ),이해훈 ( Hae Hun Lee ),박종수 ( Jong Soo Park ),양수인 ( Su In Yang ) 한국환경분석학회 2015 환경분석과 독성보건 Vol.18 No.1
The samples was collected once a month for eleven months in the year of 2013 from the different locations of the Youngsan River basin. The organic material BOD and COD/TOC was measured from the six to nine different sites of water samples of lake water, branch stream and main stream of the river, and discharged water from public sewage treatment plants. The purpose of this research was to monitor the changes of those characteristics and distribution ratios. In the lake average COD/TOC was as high as 1.95 ± 0.08, and coefficient of correlation of TOC about COD was also as high as 0.894. This result shows that the environmental standards for TOC are in need of enhancement. In the branch and main stream of the river water average concentration of COD was high and the average of COD/TOC was also high in both the branch stream (2.07 ± 0.08) and the main stream (2.28 ± 0.13). This result shows that a necessary step of management was needed against nondegradable organic materials in the Youngsan River. In the discharged water from public sewage treatment plants the average of COD/TOC was as high as 1.84 ± 0.09, and coefficient of correlation of TOC about COD was also as high as 0.789. Thus, the current COD standard can apply to TOC standard. We can start with the half of the existing COD reference value of discharged water in public sewage treatment plant as TOC reference value, which can be used as an alternative indicator of COD.
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박혜영 ( Hye-young Park ),박현수 ( Hyun-su Park ),김학림 ( Hak-rim Kim ),오길영 ( Gil-young Oh ),임항선 ( Hang-sun Lim ),이해훈 ( Hae-hun Lee ),박종수 ( Jong-su Park ) 한국환경기술학회 2020 한국환경기술학회지 Vol.21 No.4
This study investigates distribution of highly concentrated ozone generation for the last 5 years(2015~2019). To analyze the air flow and weather relation when highly concentrated ozone generated, the air current pattern was analyzed by using HYSPLIT model of National Center for Atmospheric Research, US. After HYSPLIT analysis, the characteristics of Case 1 ~ 4 were analyzed according to the travel distance. Case 3, 4 showed the most influence on generating highly concentrated ozone; it showed short travel distance. Also for Suncheon in Gwangyang-Bay area, the cause of considerable frequency and lasting time of YH and SD monitoring sites was analyzed. The total accumulated time of high ozone concentration 242 hours at YH site and 179 hours at SD site. The characteristics of the monitoring sites were analyzed by analyzing the correlation among ozone concentration, meteorological data and air pollutants. YH monitoring site showed the lowest wind speed and high correlation of Insolation. SD monitoring site showed considerably strong correlation of fine dust and ultrafine dust. Also the locations of the two sites are in leeward of the industrial complex area, therefore ozone can easily be generated and the wind speed is low, which can cause atmospheric congestion and generate highly concentrated ozone for a long time.
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