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하상안(Sang-An Ha),고현웅(Hyun-Woong Kho) 유기성자원학회 2003 유기물자원화 Vol.11 No.3
본 연구는 bench 규모의 반자동식 로타리 킬른식 열분해로를 이용하여 실험하였다. 운전매개변수는 온도를 450-800 0C 로 변화시켜 실험을 실행하였고 고형물의 열분해 공정의 체류시간은 7~20min내외로 변화하여 실힘을 히였다. 본 연구에서 중요한 실험 매개변수는 운전시간, 슬러지 수분함량, 고형물량에 따라 온도를 변화시켜 열분해특성을 연구하였다 운전시간 9분의 일정한 상태 에서 670 0C 조건은 탄소쇄 C I -C3의 물질의 생성은 증가하였지만, C4 -Ce를 함유한 오일성분은 감소하는 것으로 나타났다. 본 연구결과에서 온도변화에 따른 열분해 온도에 의해서는 미치는 영향은 크지만, 최적의 온도상태의 운전시간의 변화에 따라 발생 량의 차이가 무시할 정도로 나타났다 Pyrolysis of maizε is experimentally investigated in bεnch-scalε rotary kiln in sεmi-continuous operation. The operational parameters varied are the temperature(450~800C ), the solids residence time(7-ι20 min). Important parameters studied include the running time, water content of sewage sludge, solids amount of sewage sludge(TS%) by the varied temperature. Also, with the increasing of temperature, how the yield of oil and char product change was observed, and the distribution of gas production components was observed. The gas of Cl ~C3 yield increased and oil of CA~ C6 yield decreased along with pyrolysis temperature of 6700C by the run time of 9 min. The results showed the expected strong influence of pyrolysis temperature and a noticeable influencε of runmng tlme.
소화슬러지 개량제용 CWOS와 기존 소석회와의 비교 연구
고현웅,정병길,성낙창 동아대학교 환경문제연구소 2001 硏究報告 Vol.24 No.2
Even- year, 190,000 tons of oystershell are wasted from many oyster farms And the fact that the main components of oystershell are CaO and Al₂O₃which are chemically similar to those of lime leaded to an assumption that oystershell can be used as raw materials for synthesizing dewatering conditioner. In this study, the Jar-Test and the Bu˝chner funnel test were proceeded for the assessment of dewaterabihty of a thickened sludge and digested sludge. And TTF(Time to filter), SRF(Specific resistence Filtration) and TS(Total Solids) were adopted as the valuation indices of sludge dewaterability Dewatering conditioner which composed of both oystershell and loess is much dewaterable than the one composed of only oystershell. And in the course of combining of oystershell and loess. the following fact was found that the dewaterability of the combination which have the higher ratio of oystershell than that of loess is superior. Eventually, the most suitable ratio of dewatering conditioner complex is 9 : 1 (oystershell : loess) in treating not only thickened sludge but also digested sludge. In conclusion, the conditioner synthesized from waste oystershell and loess seems to be used as a splendid alternative material for the dewatering conditioner treating the sludge of sewage.