Two-Phase Mesophilic Anaerobic Digestion of Waste Activated Sludge by Ultrasonic and Alkaline Pretreatment

摘要：

Based on municipal waste activated sludge (WAS) obtained from Xijiao WWTP (A/O process) in Changchun, the effects of combined pretreatment of ultrasound together with CaO were investigated on subsequent two-phase mesophilic anaerobic digestion. The results indicate that the average volatile solids (VS) reduction is approximately 49.4％ , and moisture content of effluent sludge decreases from 97.6％ to 93.8％ after anaerobic digestion. The sludge floes are compfetely broken down in two phases by scanning e-lectron microscopy (SEM) analysis. NH4-N concentrations in two phases are enhanced during anaerobic digestion. However, there exists no significant phosphorus release in two phases.

关键词： mesophilic anaerobic digestion waste activated sludge (WAS) ultrasonic pretreatment alkaline pretreatment two-phase

作者: YIN Jun ZHANG Li-guo LIU Lei LIN Ying-zi ZHAO Chun-guang

作者单位: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, Ch School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, Ch Department of Environmental Engineering, Jilin Architectural and Civil Engineering Institute, Changc

会议类型: 国际会议

会议名称: 2006中日稻米品质测控及美味技术学术研讨会

会议地点: 北京

会议语种:英文

页码: 119-120

在线出版日期: 2006-08-03（万方平台首次上网日期，不代表论文的发表时间）