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Title Energy Analysis through Continuous Measurements on the Treatment of Sewage Sludge by Thermophilic Oxic Process
Ãø¼Ô ÍÌ àñ ˧¡¥Äżϻ֡¥ ÆâÆ£ÀµÌÀ ¡ÊµþÅÔÂç³Ø¡Ë
Authors
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Office name
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Key Words "thermophilic oxic process, sewage sludge, oxygen uptake rate, energy balance"
³µÍ× Ëܸ¦µæ¤Ï¡¢²¼¿å±øÅ¥¤Î½èÍý¡¦¸ºÎ̲½¤ËÂФ·¤Æ¶áǯÃíÌܤµ¤ì¤Ä¤Ä¤¢¤ë¹â²¹¹¥µ¤Ë¡¤ÎŬÍѲÄǽÀ­¤ò¸¡Æ¤¤·¤¿¡£¤½¤Î¤¿¤á¡¢¤Þ¤º¹â²¹¹¥µ¤½èÍýË¡¤Ë¤ª¤±¤ëÀ¸ÊªÈ¿±þ²áÄø¤ò¾ÜºÙ¤ËÇÄ°®¤¹¤ë¤Ù¤¯¡¢È¿±þÃæ¤Î²¹ÅÙ¡¢»ÀÁÇÇ»ÅÙ¡¢½ÅÎÌÊѲ½¤Ë¤Ä¤¤¤Æ¡¢¹âÀºÅÙ¡¦Ï¢Â³·×¬¤ò¹Ô¤Ã¤¿¡£È¿±þÊѲ½²áÄø¤òÄêÎ̲½¤¹¤ë¤È¶¦¤Ë¡¢¤½¤Î¼Â¬¥Ç¡¼¥¿¤«¤éÇ®¼ý»Ù¤Î²òÀϤˤè¤ê´Þ¿åΨ¤Î°Û¤Ê¤ë±øÅ¥¤ÎÈ¿±þÆÃÀ­¤òÌÀ¤é¤«¤Ë¤·¤¿¡£¤½¤Î·ë²Ì¡¢­¡È¿±þ²¹ÅÙ¤Ï10Æü´Ö¤Ë¤ï¤¿¤Ã¤Æ¤Û¤Ü50¡î°Ê¾å¤Î¹â²¹¤Ç»ý³¤µ¤ì¡¢Í­µ¡Êª¤Îʬ²ò¤¬Ä¹´üϢ³¤·¤Æ³èȯ¤Ëµ¯¤Ã¤Æ¤¤¤ë¤³¤È¤¬Ê¬¤«¤Ã¤¿¡£­¢»ÀÁǾÃÈñ®ÅÙ¤«¤é±øÅ¥¤ÎÇ»½ÌÅ٤ˤè¤ëÈ¿±þÆÃÀ­¤ÎÁê°ã¤ò²òÀϤ·¡¢Ç»½Ì±øÅ¥¤¬Â¾¤Î±øÅ¥¤è¤ê¹â®¤Çʬ²ò¤µ¤ì¤Æ¤¤¤ë¤³¤È¤¬¿ä¬¤µ¤ì¤¿¡£­£Ç®¼ý»Ù¤Î²òÀϤ«¤é¡¢È¿±þÇ®¤Ï¤¤¤º¤ì¤Î¼Â¸³¤Ç¤â¿åʬ¾øȯ¤Î¤¿¤á¤ËȾʬ°Ê¾å¤¬»È¤ï¤ì¡¢ÁõÃÖ¤ÎÊüÇ®Î̤ÏÁ´È¿±þÇ®¤Î20%¶¯¤Ç¤¢¤ë¤³¤È¤¬Ê¬¤«¤Ã¤¿¡£°Ê¾å¤Î¤è¤¦¤Ê¼Â¸³·ë²Ì¤òÁí¹ç¤·¡¢¹â²¹¹¥µ¤½èÍý¤¬¸úΨŪ¤Ë¿Ê¹Ô¤¹¤ë¤Ë¤Ï¡¢È¿±þÇ®¤¬ºÇ¤âÍ­¸ú¤ËÍøÍѤµ¤ìÈ¿±þ¤¬°Ý»ý¤µ¤ì¤ë¤³¤È¤Ç¤¢¤ê¡¢¤½¤Î¤¿¤á¤Ë¤Ï¡¢Í­µ¡Êª¸»¤Ë±þ¤¸¤¿¿åʬ¾øȯǽÎϤÎÊÝ»ý¤È¤½¤Î¤¿¤á¤ÎÁõÃÖ¤ÎÇ®´ÉÍý¤¬½ÅÍפǤ¢¤ë¤È¤Î·ëÏÀ¤¬Æ³¤«¤ì¤¿¡£
Abstract "The purpose of this study is to investigate the feasibility for treatment and disposal of sewage sludge by the thermophilic oxic process. During the experiment of this biological treatment process, temperature, oxygen concentration and weight changes were continuously monitored. The characteristics of the biological reaction on different sludge with various water contents were identified by analyzing the energy balance. The organic matter was actively degraded with the temperature maintained above 50¡î during the whole period. By analyzing the oxygen uptake rate, the thickened sewage sludge was more efficiently decomposed than other kinds of sludge. From the energy budget, more than 50% of heat produced from bio-reaction was used to evaporate water included in sludge; around 20% of heat produced were wasted as the heat loss of the reactor. Effective utilization of heat produced from degradation is one of the key points for the efficient operation. It is important for the thermophilic oxic process that keeps a substantial evaporation capacity from organic matter source and heat management of the device."
 
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