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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.39, no.1, 2006³â, pp.110-118
È­¿ËÀ¯¿ª ³²¾çõÀÇ ¼öÁú°ü¸®¸¦ À§ÇÑ QUAL2EÀû¿ë°ú À§Çؼº Æò°¡
( Application of the QUAL2E Model and Risk Assessment for Water Quality Management in Namyang Stream in Hwaong Polder )
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È­¿ËÀ¯¿ª üÀý¿¡ µû¶ó Á¶¼ºµÇ´Â ´ã¼öÈ£¿Í À¯ÀÔÇÏõ¿¡¼­ÀÇ ·¹ÀúȰµ¿ÀÌ ¾ÈÀüÇÏ°Ô ÀÌ·ç¾îÁö±â À§Çؼ­´Â ÀÎü°Ç°­¿¡ ¾ÈÀüÇÑ ¼öÁúÀÇ È®º¸°¡ ¿ì¼±µÇ¾î¾ß ÇÑ´Ù. ÀÌ Áö¿ªÀÇ ¼öÁú¾ÈÀüÀ» Æò°¡Çϱâ À§Çؼ­ ³²¾çõ ¼ÒÀ¯¿ª¿¡ ´ëÇØ ÇöÀåÀڷḦ ÀÌ¿ëÇÏ¿© QUAL2E ¸ðÇüÀ» Àû¿ëÇÏ¿© ¸ðÀÇÇÏ¿´°í À¯·®, $BOD_5$,$;NH_3$-N, T-N, T-P ¹× E. coli¿¡ ´ëÇÑ °Ë ${cdot}$º¸Á¤À» ½Ç½ÃÇÏ¿´´Ù. °Ë ${cdot}$º¸Á¤ °á°ú¿¡ ÀÇÇÏ¸é ¸ðÀǰªÀÌ ½ÇÃø°ªÀ» Àß ¹Ý¿µÇÏ¿´À¸¸ç ¸ðÇüÀÇ °ËÁõÀ» À§ÇØ ½Å·Úµµ¸¦ ºÐ¼®ÇÑ °á°ú r°ªÀÌ 0.90 ÀÌ»óÀ¸·Î ³ô°Ô ³ªÅ¸³µ´Ù. ¸ðÀǰá°ú¿¡ ÀÇÇϸé ÇöÀçÀÇ Á¶°Ç¿¡¼­´Â ³²¾çõ ±¸°£ÀÇ ÁöÇ¥¹Ì»ý¹° E. coliÀÇ ³óµµ°¡ ±¹³» ¹× ±¹Á¦ ÈÞ¾ç¿ë¼ö±âÁØÀ» ¸ðµÎ ÃʰúÇÒ °ÍÀ¸·Î ¿¹ÃøµÇ¾ú´Ù. Beta-Poisson ¸ðÇü¿¡ ÀÇÇØ¼­ ¿¹ÃøÇÑ °á°ú°ªÀ» Ȱ¿ëÇÏ¿© À§Çصµ °ªÀ» »êÁ¤ÇÏ¿´°í, ÀÎÀÚµé °£ÀÇ ºÒÈ®½Ç¼ºÀ» °í·ÁÇÏ¿© Monte-Carlo simulationÀ» Àû¿ëÇÑ ÈÄ 95% ½Å·Ú±¸°£ÀÇ À§Çصµ¸¦ Æò°¡ÇÏ¿´´Ù. À§Çصµ Æò°¡ °á°ú´Â ³²¾çõ ±¸°£¿¡¼­ 7.9 ${ imes};10^{-6};{sim};9.4;{ imes}10^{-6}$À¸·Î Àå³»Áúº´À» À¯¹ß°¡´ÉÇÑ ¼öÁØÀÎ $10^{-4}$º¸´Ù ³·Àº ¼öÁØÀ̾ú´Ù. ±×·¯³ª, ´ã¼öÈ£¿Í Á÷Á¢ ¿¬°áµÇ¾î ³¬½Ã³ª ¼ö¿µ°ú °°Àº ·¹ÀúȰµ¿À» Çϱ⿡ ¼ö·®ÀÌ Ç³ºÎÇÑ Á¶°ÇÀ» °®Ãß°í ÀÖ´Â R4ÁöÁ¡ µîÀÇ °æ¿ì¿¡´Â À§Çصµ ¹üÀ§°¡ Áúº´ À̵¿ÀÌ °¡´ÉÇÑ ¼öÁØÀÎ $10^{-6};{sim};10^{-8}$ÀÇ ¼öÁØÀ» ³ªÅ¸³»¾ú´Ù. ÀÌ·¯ÇÑ °á°ú¿¡ ÀÇÇϸé, ÇöÀç »óÅ¿¡¼­´Â ³²¾çõ ±¸°£ÀÇ ÇÏõ¿ë¼ö¸¦ ÈÞ¾ç¿ë¼ö·Î »ç¿ëÇÏ´Â µ¥¿¡ Á÷Á¢ÀûÀÎ À§ÇؼºÀº ³·À¸³ª, Áúº´ À̵¿ÀÇ °¡´É¼ºÀÌ ÀÖ´Â ¹üÀ§ÀÌ´Ù. µû¶ó¼­ ÀÎü¿¡ ¾ÈÀüÇÑ ÈÞ¾ç¿ë¼ö ¼öÁú È®º¸¸¦ À§Çؼ­´Â À¯¿ªÀÇ ¿À¿°¹ß»ý¿ø¿¡¼­ ¿ÀÆó¼ö󸮸¦ ÅëÇØ ÇÏõ ¼öÁúÀÌ ÈÞ¾ç¿ë¼ö·Î¼­ »ç¿ëÇÏ´Â µ¥¿¡ ÀûÇÕÇϵµ·Ï ÃæºÐÇÑ Â÷Áý½Ã¼³°ú ȯ°æ ±âÃʽü³ÀÇ ¼³Ä¡ ¿î¿µÀÌ ÇÊ¿äÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
The Namyang Stream in Hwaong polder was planned for several water uses including recreation, where people can contact the water and consume some amount during the recreational activity. A human health risk was assessed from exposure to E. coli in the Namyang Stream, which receives partially treated wastewater from watershed. The QUAL2E model was applied to simulate stream water quality, and this model was calibrated and verified with field monitoring data. The calibration result showed a high correlation coefficient of greater than 0.9. The mean concentration of E. coli in the Namyang Stream from the QUAL2E output was in the range of 5,000 ${sim}$ 8,000 MPN 100 mL^{-1}$, which exceeded national and international guidelines. The Beta-Poisson was used to estimate the microbial risk of pathogens ingestion and the Monte-Carlo analysis (10,000 trials) was used to estimate the risk characterization of uncertainty. The Microbial risk assessment showed that the risk ranged from 7.9 ${ imes};10^{-6};to;9.4;{ imes}10^{-6}$. Based on USEPA guidelines, the range of $10^{-6};to;10^{-8}$ was considered reasonable levels of risk for communicable disease transmission from environmental exposure, and the risk above $10^{-4}$ was considered to be in the danger of infection. Therefore, water quality of the Namyang Stream might not be in the danger of infection although it exceeded national and international guidelines. However, it was in the range of communicable disease transmission, and thorough wastewater collection and treatment at the source is recommended to secure safe recreation water quality.
 
Ű¿öµå
Microbial risk assessment;Monte-Carlo simulation;QUAL2E model;recreation water;Beta-Poisson model;E. coli;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.39, no.1, 2006³â, pp.110-118
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200618317186491)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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