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ȯ°æºÐ¼®ÇÐȸÁö 'ȯ°æºÐ¼®°ú µ¶¼ºº¸°Ç(ISSN 2672-0175, eISSN 2672-1139)'Àº ȯ°æµ¶¼ºº¸°ÇÇÐȸ¿Í °øµ¿À¸·Î ¹ß°£Çϸç,

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2001
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2085
»ýÈ°Æó±â¹° ¹Ù´ÚÀçÀÇ ¹°¸®È­ÇÐÀû Ư¼º ºÐ¼® ±èÁ¤È¯¡¤À¯°æ¼±*¡¤±è³²Âù* °æ±â½Å¿ëº¸ÁõÀç´Ü¡¤*±¤¿î´ëÇб³ °ø°ú´ëÇРȯ°æ°øÇаú Analysis of Physicochemical Characteristics of Bottom Ashes from Municipal Solid Waste Incinerator Jung-Hwan Kim¡¤Kyung-Sun Yoo* and Nam-Chan Kim* Kyonggi Credit Guarantee Foundation¡¤*Dept. of Environ. Eng., Kwangwoon University Wolgye-dong 447-1, Nowon-gu, Seoul, 139-701, KOREA ABSTRACT The future waste management shifts from a sanitary landfill to an incineration and a subsequent landfill. It is expected the landfill will be changed from the mixed landfill to the landfill for incinerated ashes only. The objective of this study was to characterize the physicochemical properties of the ash landfill. The ash samples were taken from three incineration facilities in Seoul and Kyonggi Province. The main tasks of this study were soil mechanics experiments, element analysis and ignition loss measurements. The mean specific gravity of bottom ashes was 2.44. The bottom ashes were well graded. The optimum water content of bottom ashes was 0.177¡­0.204. The maximum dry density was 1.81¡­1.94 g/cm3. According to consolidation tests, the consolidation coefficient was not available with ¡ît or log t method since there was no significant subsidence. The hydraulic conductivity with 20 blows was 5¡¿10-3¡­1.3¡¿10-4 cm/s. The ignition loss was 16.3¡­20.2%. The element analysis showed 0.075¡­0.015% N, 3.00¡­4.86% C, 0.20¡­0.37% H and no S. Key Words : Soil Mechanics, Bottom Ash, Consolidation Test, Hydrauric Conductivity 1. ¼­ ·Ð ¹®¸íÀÇ ¹ß´Þ·Î ÀÎÇÑ ºÎ»ê¹°ÀÎ Æó±â¹°ÀÇ ¹ß»ý·®µµ ¹ßÀü¼Óµµ¿¡ ¹ß¸ÂÃç Áõ°¡ÇÏ°í ÀÖ°í µû¶ó¼­ ȯ°æº¸Àü°ú °ü·ÃµÈ Æó±â¹°Ã³¸®¡¤Ã³ºÐ±â¼ú µîÀÇ È¯°æ±â¼ú¿¡ °üÇÑ ¿¬±¸°¡ ÀÌ·ç¾îÁö°í ÀÖÀ¸³ª º¸´Ù ü°èÀûÀÎ ¿¬±¸°¡ ÇÊ¿äÇÑ ½ÇÁ¤ÀÌ´Ù. »ýÈ°Æó±â¹°Àº 1995³â ¾²·¹±âÁ¾·®Á¦ ½ÃÇàÀ¸·Î ¸Å³â °¨¼ÒÇÏ´Â Ãß¼¼¿¡ ÀÖÀ¸¸ç 1998³â¿¡ ¹ß»ýµÈ »ýÈ°Æó±â¹°À» 󸮹æ¹ýº°·Î º¸¸é ¾²·¹±âÁ¾·®Á¦ ½Ç½Ã µîÀ¸·Î ¸Å¸³Ã³¸®À²ÀÌ 56.2%·Î ÁÙ¾îµå´Â ÇÑÆí, ÀçÈ°¿ë·üÀÌ 34.9%·Î Áõ°¡ÇÏ´Â µî ¹Ù¶÷Á÷ÇÑ Æó±â¹°Ã³¸®±¸Á¶·Î º¯È­µÇ°í ÀÖ´Ù.1) ±×·¯³ª »ýÈ°Æó±â¹° Áß °¡¿¬¼ºÆó±â¹°ÀÌ 60%¿¡ À̸£°í Àִµ¥µµ ¼Ò°¢Ã³¸®À²ÀÌ 8.8%¿¡ ºÒ°úÇÏ´Ù´Â °ÍÀº Á¼Àº ±¹ÅäÇö½Ç¿¡ ºñÃß¾î ¹Ù¶÷Á÷ÇÏÁö ¾ÊÀº Çö»óÀ̸ç, ÀÌ´Â Àα¸¹Ðµµ¡¤ÁöÇüÀû ¿©°Ç µîÀÌ ¿ì¸®³ª¶ó¿Í À¯»çÇÑ ±¹°¡µé¿¡ ºñÇÏ¿© ¸Å¸³Ã³ºÐ ÀÇÁ¸µµ°¡ Áö³ªÄ¡°Ô ³ô´Ù.2) µû¶ó¼­ Á¤ºÎ´Â 1996³â 7¿ù ¼öÁ¤¹ßÇ¥ÇÑ ±¹°¡Æó±â¹° °ü¸® Á¾ÇÕ°èȹ¿¡¼­ 2001³âµµ ¼Ò°¢Ã³¸® ¸ñÇ¥À²À» »ýÈ°Æó±â¹°ÀÇ °æ¿ì 20%·Î ¼³Á¤ÇÏ°í ÀÖ´Ù.3) ÇöÀçÀÇ Æó±â¹°°ü¸® Á¤Ã¥ÀÌ ¸Å¸³À§ÁÖÀÇ »çÈÄ󸮹æ½Ä¿¡¼­ ÀçÈ°¿ë°ú ¼Ò°¢À» Æ÷ÇÔÇÑ ÅëÇÕÆó±â¹°°ü¸® ¹æ½ÄÀ¸·Î ¹Ù²î¾î°¡°í ÀÖÀ¸¸ç, º»°ÝÀûÀÎ Áö¹æÀÚÄ¡½Ã´ë¸¦ ¸ÂÀÌÇÑ ¿ì¸®³ª¶ó¿¡¼­´Â Áö¹æÀÚÄ¡´Üüº°·Î ¶Ç´Â ¸î °³ÀÇ Áö¹æÀÚÄ¡´Üü°¡ °áÇÕÇÑ ÇüÅÂÀÇ ¼Ò°¢ÀåÀ» °è¼ÓÀûÀ¸·Î °Ç¸³ÇÏÁö ¾ÊÀ» ¼ö ¾ø°Ô µÇ¾ú´Ù. ÀÌ·¯ÇÑ Ãø¸é¿¡¼­ ¼Ò°¢ÀåÀ¸·ÎºÎÅÍ ¹ß»ýÇÏ´Â ¼Ò°¢ÀçÀÇ ¾çÀº Á¡Â÷ Áõ°¡ÇÔ°ú µ¿½Ã¿¡ °¡±î¿î Àå·¡¿¡ »ýÈ°Æó±â¹°À» ¹èÁ¦ÇÑ ¼Ò°¢À縸ÀÇ Àü¿ë ¸Å¸³Áö°¡ ¼³°è¡¤¿î¿µµÉ °ÍÀ¸·Î ¿¹»óµÈ´Ù. Áö±Ý±îÁö´Â »ýÈ°Æó±â¹° ¸Å¸³Áö¿¡ ´ëÇÑ ¿¬±¸¸¸ÀÌ È°¹ßÇÏ°í ±× µ¿¾ÈÀÇ ¼º°ú ¶ÇÇÑ »ó´çÇϳª, ¼Ò°¢Àç Àü¿ë ¸Å¸³Áö¿¡ ´ëÇÑ ¿¬±¸´Â ±¹³»¿¡¼­´Â °ÅÀÇ Ã£¾Æº¼ ¼ö ¾ø´Â ½ÇÁ¤ÀÌ´Ù. ÀÌ·¯ÇÑ ÀÌÀ¯·Î ¼Ò°¢ÀçÀü¿ë ¸Å¸³Áö¿¡ ´ëÇÑ ¿¬±¸´Â ½Ã±ÞÇÏ´Ù°í ÇÒ ¼ö ÀÖ´Ù. ¼Ò°¢Àå¿¡¼­ ¹ß»ýÇÏ´Â ¼Ò°¢Àç´Â Å©°Ô ºñ»êÀç¿Í ¹Ù´ÚÀç·Î ±¸º°µÇ´Âµ¥ ºñ»êÀç´Â ºñ»êÀç³»¿¡ ÇÔÀ¯µÈ Áß±Ý¼Ó ¼ººÐÀ¸·Î ÀÎÇØ ÁöÁ¤Æó±â¹°·Î ±¸º°µÇ¾î¾ß ÇÒ ÇÊ¿ä°¡ ÀÖÀ¸¸ç ÇöÀç ±× °úÁ¤ÀÌ ÁøÇàÁß¿¡ ÀÖ´Ù.4) µû¶ó¼­ º» ¿¬±¸¿¡¼­´Â ¼Ò°¢ÀçÀü¿ë ¸Å¸³Áö³»ÀÇ ºÐÇؾç»ó°ú ħÇϼӵµ¸¦ Æ÷ÇÔÇÑ ¾ÈÁ¤È­¼Óµµ µîÀ» ÃÑüÀûÀ¸·Î ÆľÇÇϱâ À§ÇØ ¹Ù´ÚÀ縦 ÃæÀüÇÑ Lysimeter½ÇÇè¿¡ ¾Õ¼­, ¼Ò°¢ÀçÀü¿ë ¸Å¸³ÁöÀÇ ¸Å¸³¿Ï·á ÈÄÀÇ Á¶±âÅäÁöÀÌ¿ëÀ» À§ÇØ ¹Ù´ÚÀç¿¡ ´ëÇÑ ÅäÁú°øÇнÇÇèÀ» ½Ç½ÃÇØ ¼Ò°¢Àç ¸Å¸³Áö¹ÝÀÇ ±âÃÊÀÚ·á·Î ÀÌ¿ëÇÔ°ú µ¿½Ã¿¡ ÅäÁú°øÇнÇÇèÀ» ȯ°æ°øÇÐÀûÀ¸·Î ÀÌ¿ëÇÏ°íÀÚ ÇÑ´Ù. 2. Àç·á ¹× ¹æ¹ý 2.1 Àç·á ¹Ù´ÚÀç´Â ¼­¿ï¡¤°æ±âÀÏ¿øÀÇ ´ëÇü¼Ò°¢·ÎÀÇ ¼Ò°¢·Î ÇüÅÂ, ¿ë·®°ú ¹è±â°¡½º 󸮽ýºÅÛ°ú ¼Ò°¢ÀåÀÇ »çÁ¤À» °í·ÁÇÏ¿© 3°³¼Ò¿¡¼­¸¸ äÃëÇÏ¿´´Ù. ½ÇÇè¿¡ »ç¿ëÇÑ ¹Ù´ÚÀç´Â ¼­¿ï¡¤°æ±âÁö¿ª¿¡ À§Ä¡ÇÏ°í ÀÖ´Â ¿ë·® 100 [t/d]ÀÌ»óÀÇ ´ëÇü ¼Ò°¢ÀåÁß¿¡¼­ ¼­¿ï½ÃÀÇ M¼Ò°¢Àå(ÀÌÇÏ MIF¶ó°í ÇÔ), S¼Ò°¢Àå(ÀÌÇÏ SIF¶ó°í ÇÔ) ¹× °æ±âµµ ¼ÒÀçÀÇ I¼Ò°¢Àå(ÀÌÇÏ IIF¶ó°í ÇÔ)À¸·ÎºÎÅÍ Ã¤ÃëÇÑ °ÍÀÌ´Ù. <