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  EDI ÀåÄ¡¿¡ °üÇØ
  ±Û¾´ÀÌ : Ãʼø¼ö   °íÀ¯ID : hietzsche87     ³¯Â¥ : 19-07-01 14:49     Á¶È¸ : 2662    
"For optimal removal of weakly ionized solutes such as silica and boron, current efficiencies as low as 5% are sometimes employed."
 
EDI(Àü±â Å»ÀÌ¿Â) ÀåÄ¡¸¦ °øºÎÇÏ´Ù°¡ ½Ç¸®Ä«³ª ºØ¼Ò¿Í °°ÀÌ ¾à ÀÌ¿ÂÈ­¸¦ ¶ç´Â ÀÌ¿ÂÀº Àü±âÈ¿À²À» ³·°Ô
 
Çؼ­ Á¦°ÅÇÑ´Ù°í ³ª¿ÍÀִµ¥, ÀÌ¿ÂÈ­°¡ ³·À¸¸é °­ÇÑ Àü·ù¸¦ °É¾î¼­ Á¦°Å¸¦ ÇؾßÇÏÁö ¾Ê³Ä°í »ý°¢µÇ´Â
 
µ¥ ¾àÀÌ¿ÂÀϼö ³·Àº Àü±â¿¡ Àß ¹ÝÀÀÇÏ´Â ±âÀÛÀÌ Àִ°ÍÀÎÁö ±Ã±ÝÇÕ´Ï´Ù.

½ºÅ×Æijë Stefano   19-07-01 19:15
¿ø¹®¿¡ ¾²¿©Áø ³»¿ëÀ» ±×´ë·Î ¹ø¿ªÇØ º¸ÀÚ¸é.... Si³ª B¿Í °°ÀÌ ÀÌ¿ÂÈ­°¡ ¾àÇÑ ¿ëÁúµéÀ» ÃÖÀûÀÇ ¹æ¹ýÀ¸·Î Á¦°ÅÇϱâ À§Çؼ­´Â ÈçÈ÷ <Àü·ù È¿À²ÀÌ 5% Á¤µµ·Î ³·Àº È¿À²>·Î Á¦°ÅÇϱ⵵ ÇÑ´Ù.  ¶ó°í µÇ¾î ÀÖ½À´Ï´Ù 

¿©±â¼­ <Currency Efficiency°¡ ³·´Ù>´Â ¶æÀº <¹Ì·®ÀÇ ¼ººÐ>À» Á¦°ÅÇϴµ¥ <¸¹Àº Àü·ù¸¦ Èê·ÁÁØ´Ù>´Â ¶æÀÌ µË´Ï´Ù. 

Silicon ¼ººÐÀº ¾à¾çÀÌ¿Â ¼ºÁúÀ» ³ªÅ¸³»±â ¶§¹®¿¡ °­À½ÀÌ¿Â À̿±³È¯¼öÁö¿¡ Èí¼öµÇ¾î Á¦°ÅµÇ´Â °Íó·³ <..¾àÀÌ¿ÂÀϼö·Ï ³·Àº Àü±â¿¡ Àß ¹ÝÀÀ..>À̶ó°í ÀÌÇØÇÏ¸é º» ¶æ°ú´Â ¹Ý´ë·Î ÀÌÇØÇÏ°í ÀÖ´Â °ÍÀÌ µË´Ï´Ù.

"Weakly Inonized Solute"´Â ¸»ÇÏÀÚ¸é  ¿©±â¼­´Â <°­¾çÀ̿¼öÁö¿Í ¹ÝÀÀÇØ¾ß ÇÏ´Â ¹°Áú>À̶ó´Â ¶æÀÌ µÇ´Âµ¥  ¸»ÇÏÀÚ¸é...ÀÌ·± ¹°ÁúÀ» EDI ¹æ¹ýÀ¸·Î ó¸®Çϱâ À§Çؼ­´Â  ¸¹Àº Àü·ù¸¦ ÅëÇØÁÖ¾î¾ß ÇÑ´Ù´Â °ÍÀ» ¸»ÇÏ°ÚÁö¿ä.  (ÀûÀº Àü·ù·Îµµ Á¦°Å°¡ ¿ëÀÌÇÏ´Ù¸é Current Efficiency°¡ ³ô°ÚÁö¸¸ ¿©±â¼­´Â ÀÌµé ¹°Áú Á¦°Å¿¡ Àü·ùÈ¿À²ÀÌ ³·Àº ¹æ¹ýÀÌ »ç¿ëµÈ´Ù´Â °Í)
Ãʼø¼ö hietzsche87   19-07-03 08:03
½ºÅ×Æijë´ÔÀÇ ¸»¾¸À» µéÀ¸´Ï ÀÌÇØ°¡ µÇ±â´Â ÇÏÁö¸¸ ¾Æ·¡ÀÇ ¿ø¹® Àüü¸¦ º¸¸é Çò°¥¸®°Ô µÇ³×¿ä..
¿ø¹®ÀÌ À߸øµÈ°ÍÀÎÁö Á¦°¡ Çؼ®À» À߸øÇϴ°ÇÁö ;; ¤Ì

In a EDI device, current that does not cause the transfer of salt will cause water (HOH) to split into hydrogen (H+) and hydroxyl (OH-) ions, allowing electrochemical regeneration of the ion exchange resins within the device. For example in a module that is operating at 25% current efficiency and drawing 4 amps of DC current, 1 amp is causing the transfer of salt and 3 amps are causing water splitting that is unrelated to ion transfer. Cross-leakage and back diffusion can also cause some current loss, but these are normally small compared to the water splitting.
In order to produce high purity water (over 1 megohm-cm resistivity) with a EDI system, it is generally necessary to feed the system with low TDS water such as RO permeate (normally less than 0.0005 equivalents/liter) and to operate at a current efficiency of less than 35%. For optimal removal of weakly ionized solutes such as silica and boron, current efficiencies as low as 5% are sometimes employed.
Some authors prefer to use the term E-factor. This is defined as the ratio of the applied current to the theoretical current, and is therefore the reciprocal of the current efficiency:
½ºÅ×Æijë Stefano   19-07-03 12:26
(1) ³»¿ëÀ» ¿ä¾àÇÏÀÚ¸é..
Ion Exchange Resin Àç»ý¿¡ EDI ¹æ¹ýÀÌ ¾²ÀÓÀ» ¼³¸íÇÏ°í Àִµ¥ °ø±ÞÇÑ Àü·ù´Â ¿°ºÐÀ» À̵¿Çϴµ¥ ÀÌ¿ëµÇÁö ¾Ê°í Àç»ý°úÁ¤¿¡¼­ ÀϺÎÀÇ Àü·ù°¡ ¹°ÀÇ Àü±âºÐÇØ ¹ÝÀÀÀÌ µ¿¹ÝµÈ´Ù´Â ³»¿ë°ú,  ÀÌÇö»óÀ» ¾ïÁ¦Çϱâ À§ÇØ Àü·ùÈ¿À²À» ³·°Ô À¯ÁöÇØ¾ß ÇÑ´Ù´Â °ÍÀÌ ¼³¸íµÇ¾î ÀÖ½À´Ï´Ù.  À̸¦ À§ÇØ °í¼øµµ ¹°À» ¾ò±âÀ§Çؼ­ 1) TDS°¡ ¾ÆÁÖ ³·Àº ¹°À» »ç¿ëÇØ¾ß ÇÑ´Ù´Â °Í°ú 2)Àü·ùÈ¿À²À» 35%ÀÌÇÏ·Î À¯ÁöÇÒ°Í, 3)±×¸®°í Si, BµîÀ» Á¦°ÅÇÏ°ÅÀÚ ÇÑ´Ù¸é ±× È¿À²À» 5% Á¤µµ±îÁö ³·Ãß¾î ¿îÀüÇØ¾ß ÇÑ´Ù´Â ³»¿ëÀÔ´Ï´Ù. 

(2) À̿±³È¯¼öÁö¿¡ ÈíÂøµÈ Si ÀÌ¿ÂÀ» Àü±âÀû ¹æ¹ýÀ¸·Î Àç»ýÇÒ °æ¿ì Àç»ýÀÌ ¿Ï·áµÉ ¶§±îÁö ¸¹Àº Àü·ù¸¦ Èê·ÁÁÖ¾î¾ß ÇÏ´Â °ÍÀ¸·Î º¸ÀÔ´Ï´Ù. 

Èê·ÁÁØ Àü·ù·®À» ½ÇÁ¦Àç»ýµÇ¾î ³ª¿À´Â ÀÌ¿ÂÀÇ ÀüÇÏ·®À¸·Î ³ª´«°ªÀ» E-Factor°í Á¤ÀÇÇÏ´Â °æ¿ìµµ Àִٴµ¥ Si Àç»ýÀÌ ¿Ï·áµÉ ¶§±îÁö Àü·ù¸¦ È帣°Ô µÇ¸é Àü·ùÈ¿À²Àº 5%·Î ¶³¾îÁö°í E-Factor´Â  1/5%=20±îÁö ´Ã¿©¾ß ÇÑ´Ù´Â ³»¿ëÀ̱º¿ä.

(3)ÇÊÀÚÀÇ »ý°¢Àε¥ Àü·ùÈ¿À²µµ Áß¿äÇÏ°ÚÁö¸¸ Àç»ý½ÃÀÇ »ç¿ë Àü¾ÐÀÌ ´õ¿í Áß¿äÇÒ °ÍÀ¸·Î º¸ÀÔ´Ï´Ù.  ¶ÇÇÑ ¿ø¼öÁß¿¡ Colloid »óÅÂÀÇ Silica°¡ µé¾îÀÖ´Ù¸é ÀÌµé ¼ººÐÀº Ion ±³È¯¼öÁö·Î Á¦°ÅµÇÁö ¾Ê±â ¶§¹®¿¡ Ãʼø¼ö¸¦ ¸¸µé°íÀÚ ÇÑ´Ù¸é ¿ø¼öÁß TDS ¼ººÐ ¿Ü¿¡µµ Colloidal SilicaÀÇ ¼ººÐÀÇ ÇÕ·®À» Á¡°ËÇØ º¼ ÇÊ¿ä°¡ ÀÖÀ» °ÍÀÔ´Ï´Ù.
   

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