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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.1, 2002³â, pp.133-140
ÀÏÀÏ ¹× Áß°£º¹ÅäÀç·Î¼­ Àλ꼮°í ÀçȰ¿ëÀ» À§ÇÑ ½ÇÇè ¿¬±¸
( An Experimental Study on the Utilization of Phosphogypsum as Daily and Intermediate Cover Materials )
ÀÌ¿ë¼ö;Á¤Çü½Ä; ÇѾç´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;ÇѾç´ëÇб³ Åä¸ñ°øÇаú;
 
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Àλ꼮°í(phosphogypsum)´Â Àλêºñ·á »ý»ê°úÁ¤¿¡¼­ ¹ß»ýµÇ´Â ºÎ»ê¹°·Î, Áֿ伺ºÐÀº À̼ö¼®°í$(CaSO_4.2H_2O)$°¡ ´ëºÎºÐÀÌ°í ¿©±â¿¡ ÀÎ$(P_2O_5)$, ºÒ¼Ò $(F_-)$¿Í À¯±â¹°Áú µîÀ¸·Î ÀÌ·ç¾îÁ®ÀÖ´Ù. Àü¼¼°èÀûÀ¸·Î Àλ꼮°í´Â ¾à 15,000¸¸ÅæÁ¤µµ ¹ß»ýµÇ°í ÀÖÀ¸¸ç, ±¹³»¿¡¼­´Â ¾à 157¸¸Åæ/³âÀÌ ¹ß»ýµÇ°í ÀÖ´Ù. º» ¿¬±¸´Â Æó±â¹° ¸Å¸³ÀåÀÇ ÀÏÀÏ ¹× Áß°£º¹ÅäÀç·Î¼­ Àλ꼮°íÀÇ È°¿ë¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. À̸¦ À§ÇÏ¿© ÀÔµµºÐ¼®, ºñÁß, ¿¬°æµµ, CBR, Åõ¼ö½ÃÇè, ¿ëÃâ½ÃÇè°ú ¿ì¼ö¹èÁ¦ ½ÃÇèµî ÀÏ·ÃÀÇ ½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ½ÇÇè°á°ú, Àλ꼮°í È¥ÇÕ°ú Ãþº° Á¶°Ç¿¡¼­ CBR°ªÀº 6.2~6.3%, Åõ¼ö°è¼ö´Â $alpha$ $ imes10_{-5}~10_{-6}cm/sec$·Î ³ªÅ¸³µ°í, ¿ëÃâ½ÃÇè°á°ú, °ü·Ã¹ý¿¡¼­ ¿ä±¸ÇÏ´Â ±âÁØ °ªÀÌÇÏ·Î ³ªÅ¸³µÀ¸¸ç, ¿ì¼ö¹èÁ¦½ÃÇè°á°ú¿¡¼­ Àλ꼮°í È¥ÇÕÅäÀÇ ¿ì¼ö¹èÁ¦À²ÀÌ ÀϹÝÈ­°­Åä¿Í ºñ½ÁÇÏ°Ô ³ªÅ¸³µ´Ù. µû¶ó¼­, Àλ꼮°í¸¦ ÀÏÀÏ ¹× Áß°£º¹ÅäÀç·Î Ȱ¿ëÇÏ´Â °ÍÀÌ À¯¿ëÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
Phosphogypsum is a by-product from the phosphoric acid process for manufacturing fertilizers. It consists mainly of $(CaSO_4.2H_2O)$ and contains some impurities such as$(P_2O_5)$, ºÒ¼Ò$(F_-)$, and organic substances. The annual world production of this material is up to 150 million tons and is up to 1.57 million tons in Korea. Therefore studies describe application of phosphogypsum to daily and middle cover materials in landfill. For this Purpose, experiments were performed to evaluate the engineering properties of the material by sieve analysis, specific gravity, consistency of soil, compaction, CBR, permeability, mi environmental characteristics of leaching test, reactor test. The results of this study are as follows : The mixing and layer conditions of CBR value are 6.2~6.3%, coefficient of permeability is $alpha$$ imes10_{-5}~10_{-6}cm/sec$. And leaching test results are far below than those of regulatory requirement of Waste Management Act, Soil Environment Preservation Act in Korea and RCRA in USA. Therefore phosphogypsum can be used as daily and intermediate cover materials in landfill.
 
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Cover materials;Phosphogypsum;Recycling;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.1, 2002³â, pp.133-140
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921044052)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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