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권기홍(Gi Hong Kwon),남창모(Chang Moo Nam),임수택(Soo Taek Lim) 한국환경관리학회 2006 環境管理學會誌 Vol.12 No.4
This study was conducted, in preparation for incineration of dyeing wastewater treatment sludge, to determine the physical properties of sludge generated after treating dyeing wastewater, and the physical properties and compressive strength of lightweight aggregate made from ashes of incinerated dyeing wastewater treatment sludge, in order to evaluate the recyclability of the ashes as lightweight aggregate. The results of this study are summarized as follows. In terms of the thermal properties of the sludge, there was a primarily slight exothermic peak at the heating temperature of approx. 329℃, followed by a significantly great exothermic peak at approx. 510℃, and then decomposition ended. Then, lightweight aggregate was made to determine its compressive strength. It was identified that the range of its compressive strength, in which it can be used as materials for civil engineering works, was over approx. 2㎏f/㎠. In conclusion, the dyeing wastewater treatment sludge can be recycled as lightweight aggregate as well as lightweight bricks. In addition, lightweight aggregate and bricks made from the sludge can be widely used in building public facilities and paving roads, as is the case with some foreign countries.
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