하수슬러지 및 석유화학산업단지 폐수슬러지의 에너지화와 재활용을 위한 건조 및 탄화에 관한 연구

전관수; 황응주; 김형진; Kwan-Soo Jun; Eung-Ju Hwang; Hyung-Jin Kim

Clean Technology, Vol.15, No.3, 154-164, September, 2009

A Study on Drying and Carbonization of Organic Sludge from Sewage Plant and Petrochemical Industries for Energy and Resources Recovery

전관수^†, 황응주¹, 김형진

영남대학교 환경공학과, 712-749 경북 경산시 대동 214-1
¹대구대학교 환경공학과, 712-714 경북 경산시 진량읍 내리리 15

Kwan-Soo Jun^†, Eung-Ju Hwang¹, and Hyung-Jin Kim

Department of Environmental Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan, Gyeongbuk 712-749, Korea
¹Department of Environmental Engineering, Daegu University, 15 Naeri-Ri, Jinryang-eup, Gyeongsan, Gyeongbuk 712-714, Korea

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초록

2007년을 기준으로 울산에 위치한 사업장으로부터 발생된 유기성 폐수슬러지의 94%가 해양처분되었다. 유기성 슬러지의 해양처분은 2012년에는 완전 금지될 예정이다. 그러나 아직까지 울산에 위치한 사업장으로부터의 유기성 슬러지는 소각 이외에 다른 대안이 없는 실정이며, 현재 울산석유화학산업단지의 사업장들은 슬러지의 육상처리 및 처분기술의 확보가 매우 중요한 과제이다. 본 연구에서는 울산의 석유화학사업장 슬러지와 하수처리 슬러지를 연료로 활용하기 위해 건조슬러지와 탄화슬러지의 재료적 측면에 대한 평가를 실시하였다. 연구결과 저위발열량 3,000 kcal/kg이상을 초과하는 테레프탈산, BTX, 프로필렌, 화학섬유 등을 생산하는 사업장으로부터의 건조슬러지와 탄화슬러지는 연료로서의 가능성이 높지만 건조할 경우 2,100 kcal/kg 이하, 탄화할 경우 1,100 kcal/kg 이하인 좀 더 무기성분이 많은 펄프, 제지, 메틸아민, 아마이드 등 을 생산하는 사업장의 폐수슬러지는 연료로서의 가치가 적은 것으로 나타났다. 연구결과 대부분의 슬러지들이 에너지 측면에 있어서 탄화보다는 건조가 더 좋은 결과를 보여주었다.

In 2007, 94% of organic wastewater sludge from industries located in Ulsan was disposed of by ocean dump. The ocean dump of organic sludge would be totally prohibited by the year of 2012. However, there is no alternative but incinerating the sludge from the industries located in Ulsan. Securing the technology for sludge treatment and on-land disposal is very important issue among the industries in the Ulsan Petrochemical Industry Complex. In this study, the material aspects of dried and carbonized sludge as a fuel were evaluated for petrochemical and sewage sludge from Ulsan. The dried and carbonized sludges from the factories producing terephthalic acid, BTX, propylene, chemical textile, etc. of which the low heat value exceeded 3,000 kcal/kg had high potential as a fuel according to the results of thermal characteristic analysis. However, the dried sludges with heat values lower than 2,100 kcal/kg and carbonized sludges, lower than 1,100 kcal/kg containing more inorganic material from the industries producing pulp, paper, methylamine, amide, etc. had a little potential to be used as a fuel. In most cases, drying the sludge showed better results than carbonization in the aspect of thermal characteristics of sludge.

Keywords:Sludge;Drying;Carbonization;Energy;Petrochemical sludge

[References]

"Long and Medium Range Road Map for Environmental Energy Development", Environment Management Corporation, Seoul (2007)
"Road Map for Energy Recovery and On-land Treatment of Food Waste", Ministry of Environment, Seoul (2007)
Lee JY, Kang SJ, J. Korea Org. Resour. Recy. Assoc., 17, 26 (2009)
National Institute of Environmental Research, and Korea Environment & Resources Corporation, "2007 Waste generation, treatment and disposal in Korea", National Institute of Environmental Research, Seoul (2009)
Caballero JA, J. Anal. Appl. Pyrol., 40, 433 (1997)
Storm C, Rudiger H, Spliethoff H, Hein KRG, J. Eng. Gas Turb. Power, 121, 55 (1999)
Lee HJ, 2005 Symposium on Waste Management and Treatment, Sudokwon Landfill Site Management Corp., 386-397 (2005)
Choi BS, J. Korea Soc. Waste Manage., 25, 461 (2008)
Park SW, J. Korea Soc. Waste Manage., 22, 226 (2005)
Park SW, Jang CH, Kim NJ, J. of the Environ. Sci., 13, 161 (2004)
Yang MW, Kim YJ, Lee DH, J. Korea Soc. Waste Manage., 25, 560 (2008)
Kim DY, Jung BG, Sung NC, J. Korea Soc. Waste Manage., 26, 285 (2009)
Cheremisinoff PN, Sludge Management and Disposal, PTR Prentice-Hall, Inc., New Jersey (1994)
Park SW, Chang CH, J. Environ. Hi-technol., 12, 110 (2004)
Taylor HFW, Cement Chemistry, Academic Press Inc., New York, 1990, pp. 358-362.
Lea FM, The Chemistry of Cement and Concrete, Chemical Publishing Co., Inc., New York, 1971, pp. 79-81.
Choi BS, J. Korea Soc. Waste Manage., 25, 454 (2008)

[Referenced By]

[1] "Long and Medium Range Road Map for Environmental Energy Development", Environment Management Corporation, Seoul (2007)

[2] "Road Map for Energy Recovery and On-land Treatment of Food Waste", Ministry of Environment, Seoul (2007)

[3] Lee JY, Kang SJ, J. Korea Org. Resour. Recy. Assoc., 17, 26 (2009)

[4] National Institute of Environmental Research, and Korea Environment & Resources Corporation, "2007 Waste generation, treatment and disposal in Korea", National Institute of Environmental Research, Seoul (2009)

[5] Caballero JA, J. Anal. Appl. Pyrol., 40, 433 (1997)

[6] Storm C, Rudiger H, Spliethoff H, Hein KRG, J. Eng. Gas Turb. Power, 121, 55 (1999)

[7] Lee HJ, 2005 Symposium on Waste Management and Treatment, Sudokwon Landfill Site Management Corp., 386-397 (2005)

[8] Choi BS, J. Korea Soc. Waste Manage., 25, 461 (2008)

[9] Park SW, J. Korea Soc. Waste Manage., 22, 226 (2005)

[10] Park SW, Jang CH, Kim NJ, J. of the Environ. Sci., 13, 161 (2004)

[11] Yang MW, Kim YJ, Lee DH, J. Korea Soc. Waste Manage., 25, 560 (2008)

[12] Kim DY, Jung BG, Sung NC, J. Korea Soc. Waste Manage., 26, 285 (2009)

[13] Cheremisinoff PN, Sludge Management and Disposal, PTR Prentice-Hall, Inc., New Jersey (1994)

[14] Park SW, Chang CH, J. Environ. Hi-technol., 12, 110 (2004)

[15] Taylor HFW, Cement Chemistry, Academic Press Inc., New York, 1990, pp. 358-362.

[16] Lea FM, The Chemistry of Cement and Concrete, Chemical Publishing Co., Inc., New York, 1971, pp. 79-81.

[17] Choi BS, J. Korea Soc. Waste Manage., 25, 454 (2008)