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Çѱ¹Áö¹Ý°øÇÐȸ / v.14, no.4, 1998³â, pp.151-162
À¯±âÁúÅä¿¡ ´ëÇÑ »ýºÐÇØÃ³¸® È¿°ú¿¡ °üÇÑ ¿¬±¸
( A Study on the Effects of Biodegradation for Organic Soils )
¼Û¿µ¿ì;¹ÚÁعü;±èÇü¼®; Çѳ²´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇаú;¼­¿ï´ëÇб³ °ø°ú´ëÇÐ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкΠ°æµ¿±â¼ú°ø»ç Áö¹ÝºÎ;;
 
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À¯±âÁú Áö¹ÝÀº ¾ÐÃ༺°ú Åõ¼ö¼ºÀÌ ¸Å¿ì Ä¿¼­ ±¸Á¶¹°À» ½Ã°øÇÏ´Â µ¥ ¸¹Àº ¹®Á¦¸¦ ¹ß»ý½ÃÄÑ ÅäÁöÀÇ È¿À²ÀûÀÎ ÀÌ¿ëÀ» ¾î·Æ°Ô ÇÑ´Ù. ÀÌ·¯ÇÑ Áö¹Ý¿¡ Ưº°ÇÑ °ø¹ýÀ» Àû¿ëÇÏ¿© À¯±â¹°ÀÇ ÇÔ·®À» °¨¼Ò½Ãų ¼ö ÀÖ´Ù¸é, Áö¹ÝÀÇ °øÇÐÀû ¼ºÁúÀ» ¾î´À Á¤µµ °³¼±ÇÒ ¼ö ÀÖÀ» °ÍÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â À¯±âÁú Áö¹Ý³» À¯±â¹° ÇÔ·®À» °¨¼Ò½ÃÄÑ ½Ã°øÈÄ Ä§ÇϹ®Á¦¸¦ ÇØ°áÇϱâ À§ÇØ È£±â¼º »ýºÐÇØÃ³¸®¹ý(aerobic biodegradation)À» ÀÌ¿ëÇÏ¿© Áö¹Ý³» À¯±â¹°ÀÇ ÇÔ·®À» °¨¼Ò½ÃŰ´Â ¹æ¾È¿¡ ´ëÇØ ¿¬±¸ÇÏ¿´´Ù. »ýºÐÇØÃ³¸® È¿°ú¸¦ ³ôÀ̱â À§ÇØ °í·ÉÅä¿¡ Åé¹äÀ» ½É¾î Á¶Á¦ÇÑ ¸ðÇü À¯±âÁú Áö¹Ý¿¡ »ê¼Ò¸¦ °ø±ÞÇϰí, ½Ã°£ ¿¡ µû¸¥ ¿ëÁ¸»ê¼Ò·®, À¯±â¹° ÇÔ·®ÀÇ º¯È­¸¦ °üÂûÇÏ¿´´Ù. »ê¼Ò¿øÀ¸·Î´Â °ú»êÈ­¼ö¼Ò ¼ö¿ë¾×°ú »ê¼Ò°¡ ½º¸¦ »ç¿ëÇÏ¿´´Ù. º» ½ÇÇèÀ» À§ÇØ »õ·Î Á¦ÀÛÇÑ Á÷°æ 130 mm, ³ôÀÌ 300 mm ÀÇ ¾ÐÃà½ÃÇè±â·Î 100 ÀÏ µ¿¾È ¸ðÇü¾ÐÃà½ÃÇèÀ» ÇÏ¿´´Ù. ½ÃÇè°á°ú »ê¼Ò°¡½º¿Í ¿µ¾çºÐÀ» °ø±ÞÇÑ ½Ã·á´Â ±×·¸Áö ¾ÊÀº °æ¿ì¿¡ ºñÇØ ¾ÐÃà·®ÀÌ 30% Á¤µµ ´õ Å©°Ô ³ªÅ¸³µ´Ù. ¿µ¾çºÐÀ¸·Î´Â $K_2aHPO_4,; º¸´Ù ;NaNO_2$>, ¸¦ ÷°¡ÇÏ´Â °ÍÀÌ ´õ¿í È¿°úÀûÀ̾ú´Ù. ¶ÇÇÑ ½Ã·á¿¡ ¾ÆÁöµå ³ªÆ®¸¨À» »ç¿ëÇÏ¿© ¹Ì»ý¹°ÀÇ ÀÛ¿ëÀ» È®ÀÎÇÏ¿´´Ù.
The compressibility and the permeability of organic soil are so high that they cause many engineering problems when constructing a structure on the soil. If the organic content of the soil could be reduced by any applicable engineering technique, the engineering properties of the soils can be improved to some extent. The purpose of this study would thus be focused on how to decrease the amount of organic matters by applying aerobic biodegradation for eliminating post-construction settlement problems. To enhance the aerobic decomposition, oxygen was supplied to the soil samples prepared by the mixture of kaolinite and sawdust as organic matter. The dissolved oxygen and the organic content of the soil samples were measured, in accordance with the passage of time through the bests. As oxygen suppliers, HaOa liquid and pure oxygen gas were compared to meet the requirement of the test purposes. Newly manufactured oedometer with the diameter of 130 mm and the height of 300 mm was used for 100 days to perform the compressibility tests for the soils. Based on the results of this experiment, the oxygen gas-treated samples with nutrient settled 30% more than the samples untreated. This confirmed the efficiency of the aerobic biodegradation. $NaNO_3$ added into the soils as nutrients was proved more effective than $K_2HP0_4$. To confirm the activity of micro-organisms, sodium azide was also added to the soils.
 
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Biodegradation;Dissolved oxygen;Organic content;Compressibility test;Nutrient;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.14, no.4, 1998³â, pp.151-162
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811920448307)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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