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[2023] [¹Ì±¹] ¹Ì³×¼ÒŸ ´ë ¿¬±¸ÆÀ, Àå±âÀû È«¼ö ´ëÀÀ ¼Ö·ç¼Ç Á¦½Ã
À̸§ °ü¸®ÀÚ waterindustry@hanmail.net ÀÛ¼ºÀÏ 2023.05.08 Á¶È¸¼ö 509
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[¹Ì±¹] ¹Ì³×¼ÒŸ ´ë ÁÖ¸§, ¼ö¸® ¼ö¸® ´ëÃ¥ Á¦½Ã



¹Ì³×¼ÒŸ ´ëÇб³ ¸óÆ® ¾Ø¼­´Ï Æú½º ¿¬±¸¼ÒÀÇ ¾Øµð ¿¡¸¯½¼(Andy Erickson) ¹Ú»ç¿Í Á¸ ±ä¹ö(John Gulliver) ¹Ú»ç. [»çÁøÁ¦°ø = ¹Ì³×¼ÒŸ´ëÇб³]

 

¹Ì³×¼ÒŸ´Â ¿Ã º½¿¡ ½É°¢ÇÑ ¹ü¶÷ À§Çè(È«¼ö À§Çè)À» ±â·ÏÇß°í, ÃÖ´ë ÀÌ·¯ÇÑ ¹ü¶÷ À§ÇèÀº ¿¹»óµÈ´Ù. Æø¿ì¿Í È«¼ö¿Í °°Àº ±âÈÄ º¯È­·Î ¹ß»ýÇÑ ±ØÇÑ ÀüÁö Çö»óÀº ¹Ì³×¼ÒŸ¸¦ Áß´ÜÇÏ°í Àü ¼¼°è Áö¿ª »çȸ¿¡¼­ Á¡Á¡ ´õ ÈçÇÏ°Ô ¹ß»ýÇÏ°í, ÀÌ¿¡ µû¶ó ºÐ±âµË´Ï´Ù.


¹Ì³×¼ÒŸ´ëÇб³ °ø°ú´ëÇÐÀÇ Åä¸ñ°øÇבּ¸ÀÎ ¾Øµð ¿¡¸¯½¼(Andy Erickson) ¹Ú»ç¿Í Á¸ °É¸®¹ö(John Gulliver) ¹Ú»ç´Â ÇöÀç °æÇâ(Trends)°ú °¡Àå ÃÖ±Ù¿¡ Á¶»çÇÏ°í, ±ØÇÑÀÇ »ó½ÂÀ¸·Î ºø¹°ÀÌ ºø¹°ÀÌ ³ª¿À´Â ¹è¼ö(stormwater runoff) À» µµ½Ã°¡ ´õ Àß °ü¸®ÇÒ ¼ö ÀÖµµ·Ï µµ¿ÍÁÖ´Â ´Ù¾çÇÑ ¹æ¹ýÀ» Æò°¡Çß½À´Ï´Ù.


¾Øµð ¿¡¸¯½¼ ¹Ú»ç¿Í Á¸ °É¸®¹ö ¹Ú»çÀÇ ¿¬±¸¿¡ µû¸£¸é ÇâÈÄ ¿¹ÃøµÇ´Â ±Ø´ÜÀûÀÎ »ç°ÇÀº ºø¹° ÀÎÇÁ¶óÀÇ ´çÃÊ ¼³°è ¹üÀ§¸¦ ÃÊ°úÇϸç, ÀúÀåÇØ¾ß ÇÒ ºø¹°ÀÇ ¾çµµ »ó´çÇÏ´Ù.


¾Øµð ¿¡¸¯½¼ ¹Ú»ç´Â ¡°±âÈÄ º¯È­´Â ¿ì¸® µµ½ÃÀÇ ºø¹° ÀÎÇÁ¶ó¿¡ ½É°¢ÇÑ À§ÇùÀÌ´Ù"¶ó¸ç, "¿¬±¸ °á°ú¿¡ µû¶ó ¿ì¸®´Â ¹Ì·¡¿¡ ¿¹ÃøµÇ´Â ±ØÇÑ °­¿ì·Î ÀÎÇÑ ºø¹° À¯ÃâÀ» °ü¸®Çϱâ À§ÇØ µµ½Ã¿¡¼­ ´ÙÀ½ Àü·«À» Á¶ÇÕÇÒ °ÍÀ» ±Ç°íÇÑ´Ù"¶ó°í ¸»Çß´Ù.


1. ´õ ¸¹Àº ¾çÀÇ ¹°À» ó¸®ÇÒ ¼ö ÀÖµµ·Ï ºø¹° ÀÎÇÁ¶ó¸¦ È®ÀåÇØ¾ß ÇÑ´Ù. ¿©±â¿¡´Â »õ·Î¿î ºø¹° ¿¬¸ø °Ç¼³(stormwater ponds), ±âÁ¸ ºø¹° ½Ã½ºÅÛ ¾÷±×·¹ÀÌµå ¶Ç´Â µÎ °¡Áö ¸ðµÎ°¡ Æ÷Ç﵃ ¼ö ÀÖ´Ù.


2. ±âÁ¸ ³ìÁö °ø°£ÀÇ Ä§Åõ¸¦ °³¼±ÇÑ´Ù. ¿©±â¿¡´Â ³ª¹«¸¦ ½É°í, ¿ì¼öÀú·ù°ø¿ø(Rain Garden)À» ¼³Ä¡ÇÏ°í, ºø¹°À» Èí¼öÇÒ ¼ö ÀÖ´Â ´Ù¸¥ ½Ä»ý Áö¿ªÀ» ¸¸µå´Â °ÍÀÌ Æ÷ÇԵȴÙ.


3. ºø¹°¹ÞÀÌ¿¡¼­ ºÒħÅõ¼º Ç¥¸éÀ» ºÐ¸®ÇÑ´Ù. ¿©±â¿¡´Â ºø¹°¹ÞÀÌ ¼³Ä¡, ´Ù¿î½ºÆÄ(Downspouts, ¼öÁ÷ ³«¼ö ȨÅë)À» ½Ä»ýÀ¸·Î º¯°æ, ´Ù°ø¼º Æ÷Àå µµ·Î »ç¿ë µîÀÌ Æ÷ÇԵȴÙ.


Á¸ °É¸®¹ö ¹Ú»ç´Â ¡°¹Ì·¡¿¡ ¿¹ÃøµÇ´Â ±ØÇÑ °­¿ì »ç°ÇÀ¸·Î ÀÎÇÑ ºø¹° À¯ÃâÀ» °ü¸®Çϱâ À§ÇÑ Á¶Ä¡¸¦ ÃëÇÔÀ¸·Î½á, ¿ì¸®´Â È«¼ö ¹ß»ý °¡´É¼ºÀ» ÁÙÀÌ°í ¿ì¸® Áö¿ª»çȸ¸¦ º¸È£ÇÒ ¼ö ÀÖ´Ù"¶ó¸ç, "°¡Àå À¯¸ÁÇÑ Á¶Ä¡ Áß Çϳª´Â Àܵð¹çÀÇ Àܵ𰡠Åä¾ç Åõ°ú¼ºÀ» °³¼±½Ãų ¼ö ÀÖ´Â »Ñ¸® ±íÀº Àܵ𸦠½ÉÀ½À¸·Î½á ±ØÇÑ °­¿ì·Î ÀÎÇÑ À¯Ãâ¼ö¿¡ ¾î¶»°Ô ¿µÇâÀ» ¹ÌÄ¥ ¼ö ÀÖ´ÂÁö »ç¶÷µéÀ»¿¡°Ô ±³À°ÇÏ´Â °ÍÀÌ´Ù¡±¶ó°í ¼³¸íÇß´Ù.


¿£µð ¿¡¸¯½¼ ¹Ú»ç´Â ¹Ì³×¼ÒŸ ´ëÇб³ ¼¼ÀÎÆ® ¾Ø¼­´Ï Æú½º ¿¬±¸¼Ò(University of Minnesota St. Anthony Falls Laboratory, SAFL)ÀÇ ¿¬±¸ °ü¸®ÀÚÀÌ´Ù. ¿¡¸¯½¼ÀÇ ¿¬±¸´Â µµ½Ã ¹× ³ó¾÷ À¯¿ªÀÇ ¼öÁúÀ» ÀÌÇØÇÏ°í, ºø¹° ó¸® °üÇàÀ» Æò°¡ ¹× À¯ÁöÇϸç, ö °­È­ ¸ð·¡ ÇÊÅÍ(Iron-Enhanced Sand Filter)¿Í °°Àº »õ·Î¿î ºø¹° ó¸® ±â¼ú °³¹ß¿¡ ÁßÁ¡À» µÐ´Ù.


Á¸ °É¸®¹ö ¹Ú»ç´Â ¹Ì³×¼ÒŸ ´ëÇб³ Åä¸ñ, ȯ°æ ¹× Áö¸®°øÇаúÀÇ ¸í¿¹ ±³¼öÀÌ´Ù. °É¸®¹ö ¹Ú»çÀÇ ÁÖ¿ä ¿¬±¸ °ü½É»ç´Â ȯ°æ ½Ã½ºÅÛÀÇ ´ë·® ¼ö¼Û°ú ºñ¹° ¿À¿° ¹æÁöÀÌ´Ù. °É¸®¹ö ¹Ú»ç´Â ¼¼ÀÎÆ® ¾Ø¼­´Ï Æú½º ¿¬±¸¼Ò¿¡¼­ ¿¬±¸¸¦ ¼öÇàÇÏ°í ÀÖ´Ù.


[¿ø¹®º¸±â]


Long-Term Solutions Address Flood Trends


 

Minnesota is experiencing severe flooding risks this spring, and it¡¯s a trend expected to continue in the future. Extreme weather events brought on by climate change, such as heavy rains and flooding, are becoming more common here and in communities across the globe — and our infrastructure has not been able to keep up. 


Andy Erickson and John Gulliver, civil engineering researchers in the University of Minnesota College of Science and Engineering, explore current trends and infrastructure limitations and evaluate a variety of ways in which cities can better manage stormwater runoff from extreme weather events. 


Their research finds that extreme and future-predicted events are larger than our stormwater infrastructure was ever designed to handle. In addition, the amount of stormwater we need to store is substantial.


Andy Erickson, Ph.D., PE


¡°Climate change is a serious threat to our urban stormwater infrastructure. Based on our findings, we recommend cities consider a combination of the following strategies to manage stormwater runoff from extreme and future-predicted storm events:


Expand stormwater infrastructure to handle larger volumes of water. This could involve building new stormwater ponds, upgrading existing stormwater systems, or both.


Improve infiltration in existing green spaces. This could involve planting trees, installing rain gardens, and creating other vegetated areas that can absorb rainwater.


Disconnect impervious surfaces from storm sewers. This could involve installing rain barrels, redirecting downspouts to vegetated areas, and using porous pavement."


John S. Gulliver, Ph.D.


¡°By taking steps to manage stormwater runoff from extreme and future-predicted storm events, we can reduce the potential for flooding and protect our communities. One of the most promising steps would be to educate people on how the grass in their lawns can influence runoff from extreme events by planting deep rooted grasses that will improve soil permeability.¡±


Andy Erickson, Ph.D., PE, is a research manager at the University of Minnesota¡¯s St. Anthony Falls Laboratory. Erickson's research focuses on understanding water quality in urban and agricultural watersheds, assessing and maintaining stormwater treatment practices, and developing new stormwater treatment technologies such as the Iron-Enhanced Sand Filter. 


John S. Gulliver, Ph.D.´Â ¹Ì³×¼ÒŸ ´ëÇб³ Åä¸ñ, ȯ°æ ¹× Áö±¸ °øÇаú ¸í¿¹ ±³¼öÀÔ´Ï´Ù. °É¸®¹öÀÇ ÁÖ¿ä ¿¬±¸ °ü½É»ç´Â ȯ°æ ½Ã½ºÅÛÀÇ ´ë·® ¼ö¼Û°ú ¿ì¼ö ¿À¿° ¹æÁöÀÔ´Ï´Ù. °É¸®¹ö´Â SAFL(St. Anthony Falls Laboratory)¿¡¼­ ¿¬±¸¸¦ ¼öÇàÇÕ´Ï´Ù.


[Ãâó = University of Minnesota ( https://twin-cities.umn.edu/news-events/long-term-solutions-address-flood-trends ) / 2023³â 5¿ù 2ÀÏ]

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