논문 상세보기
pp.155-164
There are two primary sludge drying methods such as the direct heating microwave method and the indirect heating steam one. In this study, the drying treatment facility at sewage treatment plant A applied both of these drying methods. The research aimed to investigate the optimal operation approach for the drying facility, considering the input sludge and the moisture content data after the drying process. Moisture content and removal rate data were executed at the research facility from January 2016 to December 2018. First, the microwave, a direct heating drying method, performed intensive drying only on the outer surface of the sludge by directly applying heat to the sludge using far infrared rays, so effective sludge drying was not achieved. On the other hand, the steam method of the indirect heating method used steam from a gas boiler to maximize the utilization of the heat transfer area and reduce energy of the dryer, resulting in an effective sludge drying efficiency. The sludge moisture content brought into the sludge drying facility was about 80%, but the moisture content of the sludge that went through the drying facility was less than 10% of the design standard. Therefore, the steam method of the indirect heating method is more effective than the microwave method of the previous direct heating method and is more effective for maintenance It has proven that it is an efficient method of operating construction facilities.
2. 재료 및 실험방법
2.1 슬러지 건조의 종류
2.2 직접건조공법
2.3 간접건조공법
2.4 연구처리시설 슬러지 특성 및 운전
2.5 마이크로웨이브 공법 개요
2.6 마이크로웨이브(Microwave)공정도
2.7 증기(Steam)건조 공법 개요
2.8 증기(Steam)건조 공정도
2.9 공정시험법 적용 및 분석기간
3. 결과 및 고찰
3.1 마이크로웨이브(Microwave)사용 시 투입/건조슬러지 함수율 비교
3.2 증기(Steam)건조 공법 사용 시 투입/건조 슬러지함수율 비교
3.3 슬러지 처리량 관련 마이크로웨이브와 증기건조공법의 성능비교
3.4 공정에 따른 유지관리에 대한 평가
4. 결 론
사 사
References
