하수처리장 발생 탈수슬러지의 월별 성상 특성 = Monthly Characteristics of Dewatered Sludge from Sewage Treatment Plant

다국어 초록 (Multilingual Abstract)

This study was performed to analyze the monthly characteristics of sewage sludge by analyzing the basic data required for recycling in thermal power generation or as incineration plant auxiliary fuel. Analytical samples were collected from two sites every month for three years, for 72 samples total. Proximate analysis (such as moisture, ash, and volatiles), elemental analysis (C, H, O, N, and S), tube furnace-ion chromatography, and calorimetry (heating value) were performed to evaluate the sludge heating characteristics. Resultantly, the moisture values were 73.2-89.5% (average 82%), the volatile values (dry basis) 44.8-83.0% (average 66.5%), and the low heating values (10% moisture basis) 2,014-4,304 kcal/kg (average 3,248 kcal/kg). The low heating values (10% moisture basis) exceeded the recycling standard of 2,000 kcal/kg, confirming the possibility of recycling the sludge as fuel. When we looked at the monthly heating value of the sewage sludge, it tended to be high in November, December, January, and February. Thus it could be concluded that sewage-sludge-based fuels generated in winter could obtain higher quality with higher heating value when sewage sludge is recycled as fuel.

참고문헌 (Reference)

1 환경부, "하수도 통계"

2 박재은, "표준활성슬러지 공정의 Acetaminophen과 Sulfamethoxazole 노출에 대한 적응성 평가" 한국환경분석학회 19 (19): 119-125, 2016

3 "폐기물관리법 시행규칙, 시행 2018.1.18., 환경부령 제745호" 2018

4 김준형, "우리나라 하수슬러지의 처리현황 및 건조연료화 개선 방안" 17 : 49-58, 2013

5 강정희, "건조 하수슬러지의 석탄 혼소를 위한 연료특성 및 경제성 평가에 관한 연구" 유기성자원학회 22 (22): 11-19, 2014

6 H. So, "Study on the RDF combustion characteristics in rolling-great type small-size boiler" 19 (19): 534-541, 2002

7 J. Werther, "Potentials of Biomass Co-Combustion in Coal-Fired Boilers" 18-20, 2009

8 G. Q. Liu, "Fundamental study of the behavior of chlorine during the combustion of single RDF" 21 : 427-433, 2001

9 C. Storm, "Co-pyrolysis of Coal/biomass and Coal/sewage Sludge Mixtures" 121 : 55-63, 1999

10 D. G. Lee, "Co-combustion characteristics of sewage sludge and RDF, ministry of commerce" 254-266, 2004

11 "2014년도 공공하수처리시설 운영관리실태 분석결과" 환경부 2014