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Á¦¸ñ : Bio-SolidÀÇ Å»¼ö¼º °³¼± ¹× °¨·®È¸¦ À§ÇÑ ÃÊÀ½ÆÄ Àû¿ë
ÀúÀÚ : ¹Úö, ÇÏÁؼö, ±è¿µ¿í
¹ßÇàÇÐȸ : Çѱ¹»êÇбâ¼úÇÐȸ [The Korea Academia-industrial cooperation Society]
¹ßÇàÁ¤º¸ : Çѱ¹»êÇбâ¼úÇÐȸ³í¹®Áö Á¦ 15±Ç 6È£ pp.4019-4023(5 pages)
¹ßÇà³âµµ : 2014
ÀúÀ۽ñâ : 2014³â 6¿ù
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This study examined the effec
tiveness of ultrasound on enhancing the dewaterability and volume reductionof bio solids from a waste treatment plant. The test specimen was obtained from a storage tank immediately beforethe dewatering process at a local treatment plant. The test conditions included the energy levels of ultrasonic wavesand treatment time. The tests were undertaken using three types of different treatment processors (7 liter, 1 ton, 7ton container). The capillary suction time (CST) and the viscosity of sludge, which is one of the influencing factorsfor dewaterbility, were obtained under various test conditions. The results showed that ultrasound increases the CSTof the raw specimens, whereas a significant reduction (20 % of the maximum value) of CST occurred in the samplewith ultrasound and flocculent. The decrease in viscosity reached 40 % of the maximum value. A centrifugal testwas performed to examine the characteristics of the sludge settlement. The settling rate and time required to reachthe final values were both enhanced by the ultrasonic energy. An ultrasonic treatment is potentially useful tool forreducing the amount of released sludge. To examine the possible use of field application, the real scale sonicprocessor was designed and operated. The results were similar (50 % of the maximum value) to those of laboratoryexperiments (ÀÌÇÏ »ý·«)
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