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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.33, no.3, 2000³â, pp.295-303
½ÀÁö¿¡ ÀÇÇÑ ¼öÁú°³¼± È¿°ú
( Water Quality Improvement by Natural Wetland )
±è¹üö;±èÈ£¼·;Àü¸¸½Ä;Ȳ±æ¼ø; °­¿ø´ëÇб³ ÀÚ¿¬°úÇдëÇРȯ°æ°úÇаú;°­¿ø´ëÇб³ ÀÚ¿¬°úÇдëÇРȯ°æ°úÇаú;°­¿ø´ëÇб³ ÀÚ¿¬°úÇдëÇРȯ°æ°úÇаú;³ó¾÷±â¹Ý°ø»ç ³ó¾îÃÌ¿¬±¸¿ø;
 
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10³â ÀüºÎÅÍ ³í³ó»ç°¡ Áß´ÜµÇ°í ³ó¾÷¹è¼ö¿Í »ýȰÇϼö°¡ À¯ÀÔÇÏ¿© ½Ä»ýÀÌ ¹ø¼ºÇÑ ½ÀÁö¿¡¼­ ¼öÁú°³¼± È¿°ú¸¦ ÃøÁ¤ÇÏ¿´´Ù. ½ÀÁöÀÇ Ã¼·ù½Ã°£ÀÌ Æò±Õ 1.2ÀÏ·Î ¸Å¿ì ªÀ½¿¡µµ ºÒ±¸Çϰí SS¿Í Áú¼ÒÀÇ Á¦°ÅÈ¿°ú´Â ³ô°Ô ³ªÅ¸³µ´Ù. Áú»ê¼ºÁú¼ÒÀÇ Á¦°ÅÈ¿À²Àº Æò±Õ À¯ÀÔºÎÇÏ·®ÀÇ 61.4% (26.8 g/m$^{2}$/yr)·Î Á¶»çÇ׸ñ Áß °¡Àå ³ô¾ÒÀ¸¸ç, TNÀº 23.5% (45.1 g/m$^{2}$/yr), SS´Â 56% (1,515 g/m$^{2}$/yr)ÀÇ Á¦°ÅÈ¿À²À» ³ªÅ¸³Â´Ù. ½ÀÁö¿¡¼­ÀÇ À¯±â¹° Á¦°ÅÈ¿À²Àº ³·¾Ò´Ù. COD´Â ÃÑ À¯ÀÔºÎÇÏ·®ÀÇ 14.2% (104 g/m$^{2}$/yr), VSS´Â 28.4% (28.4 g/m$^{2}$/yr)°¡ Á¦°ÅµÇ¾úÀ¸³ª, DOC´Â 1.0% (7.6 g/m$^{2}$/yr)·Î °ÅÀÇ Á¦°ÅµÇÁö ¾Ê¾Ò´Ù. Æò±Õ À¯ÀÔºÎÇÏ·®ÀÌ 32.5 g/m$^{2}$/yrÀ̾ú´ø TP´Â ´ëºÎºÐÀÌ Á¦°ÅµÇÁö ¾Ê¾ÒÀ¸¸ç ¿ëÁ¸ÀÎÀÇ °æ¿ì´Â À¯ÀÔµÈ ÀÎÀÇ ºÐÇØ ¹× ÅðÀû¹°¿¡¼­ÀÇ Àç¿ëÃâ¿¡ ÀÇÇÏ¿© ½ÀÁö·ÎºÎÅÍ À¯ÃâµÇ´Â Ư¼ºÀ» º¸¿´´Ù. ½ÀÁö¿¡ ¼³Ä¡µÈ enclosure¿¡¼­´Â ¹°ÀÇ È帧ÀÌ Â÷´ÜµÇ´Â Ãʱ⿡ Áú»ê¼ºÁú¼Ò¸¦ Á¦¿ÜÇÏ°í °ÅÀÇ ¸ðµç ¹°Áú³óµµ°¡ ³ô¾ÆÁö´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÀÌ·¯ÇÑ Çö»óÀº ü·ù½Ã°£ÀÌ ±æ¾îÁö¸é¼­ ´Ù½Ã ÀÎÀ» Á¦¿ÜÇÑ SS, À¯±â¹°(VSS, COD, DOC)°ú ÃÑÁú¼Ò´Â °¨¼ÒÇÏ´Â °æÇâÀ» º¸¿´´Ù. ½Ä»ý°ú ½ÀÁö ¹Ù´Ú¿¡ ÃàôµÇ¾î ÀÖ´Â ½Ä¹°°í»çüÀÇ Á¦°Å´Â ¿ëÁ¸»ê¼ÒÀÇ Áõ°¡¿¡ ÀÇÇÑ ÁúÈ­ÀÛ¿ëÀ¸·Î Áú»ê¼ºÁú¼ÒÀÇ ³óµµ°¡ Áõ°¡ÇÒ »Ó ½ÀÁöÀÇ Á¤È­È¿À²¿¡ ¹ÌÄ¡´Â ¿µÇâÀº Àû¾ú´Ù. À̰ÍÀº ½ÀÁöÀ¯Ãâ¼öÀÇ À¯±â¹°³óµµ°¡ ½ÀÁö ³»¿¡ ºÐÆ÷ÇÏ´Â ½Ä»ýº¸´Ù´Â ÅðÀûµÈ À¯±â¹°°ú »óºÎ ¼öÃþ°£ÀÇ ¹°Áú±³È¯ ÆòÇü¿¡ ÀÇÇØ °áÁ¤µÇ´Â °ÍÀ̸ç, ÀϺΠÅðÀûÃþÀ» Á¦°ÅÇϰí ü·ù½Ã°£À» ´ÃÀδٰí ÇØµµ ÀúÁú°úÀÇ ÆòÇü³óµµ ÀÌ»óÀ¸·Î ¼öÁúÀ» °³¼±ÇÒ ¼ö´Â ¾ø´Ù´Â °ÍÀ» ÀǹÌÇÑ´Ù. ÇÑÆí ÀÚ¿¬½ÀÁö´Â °­¿ì±âÀÇ À¯ÀÔ¼ö¿¡ ´ëÇÏ¿© ¾ÈÁ¤ÀûÀΠó¸®È¿À²À» º¸¿© À¯¿ª ºñÁ¡¿ø¿¡¼­ÀÇ ¿À¿°¹°Áú À¯Ãâ¹æÁö¿¡ Ȱ¿ëÀÌ °¡´ÉÇÒ °ÍÀ¸·Î º¸ÀδÙ.
The water clarification efficiency was examined in a shallow wetland where dense vegetation was formed naturally in an abandoned paddy field. And, also two enclosure experiments were carried out to measure the effects of materials exchange between sediment and the overlying water with the existence of vegetation and accumulated litter. The hydraulic retention time of wetland was regulated in 1.2 day. The removal rates of SS (56%) and $NO_3-N$ (61%) were high, considering its short retention time. However, removal efficiencies of VSS (28%), COD (14%), DOC (1%),and TP (0.2%) were relatively lower. This low removal efficiencies were thought to be due to the release of dissolved form of organic matter and phosphorus from the sediment. Most of constituents except nitrate were higher in the enclosure at the beginning of enclosure installation than that of the outflowing water from wetland. And then, it has fluctuated and decreased with time. The wetland was in equilibrium state of settling, accumulation of organic debris, and regeneration of dissolved material from sediment. So ultimately high primary production by dense vegetation in the wetland may be the reason of unfavorable or low treatment efficiency of wetland after many years of operation for wastewater treatment. However, the water quality of effluent from the wetland showed smaller variation and better condition than that of inflow, especially during storm events. It can be concluded that this wetland is suitable for the improvement of water quality from nonpoint sources.
 
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Wetland;Water clarification;Removal efficiency;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.33, no.3, 2000³â, pp.295-303
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200018317176046)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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