Comparison between Thermophilic and Mesophilic Anaerobic Digestion of Waste Activated Sludge by Combined NaOH-Microwave Pretreatment

摘要：

In order to investigate the effects of NaOH-microwave pretreated waste activated sludge on thermophilic anaerobic digestion process (TADP) and mesophilic anaerobic digestion process (MADP), the experiments were conducted under thermophilic and mesophilic condition to utilize NaOH-microwave pretreated waste activated sludge as substrate, respectively, by using the semi-continuous flow completely mixed reactors. During the opration period, TADP and MADP were stable and well-functioned without ammonia inhibition. Organic matters reduction of TADP was superior to that of MADP. Methane yield of TADP was higher than that of MADP. Compared with the mesophilic digested sludge, the dewaterability of thermophilic digested sludge was lower. The results showed the semicontinuous TADP and MADP fed with the pretreated waste activated sludge without neutralization was stable.

关键词： thickened waste activated sludge microwave pretreatment alkaline pretreatment thermophilic anaerobic digestion mesophilic anaerobic digestion

作者: Yong-Zhi Ch Yu-YouLi MinJi Shao-PoWang Hong-YingYuan Xue-Ning Fei

作者单位: Tianjin Key laboratory of Aquatic Science and Technology, Department of Environmental and Engineerin Department of Environmental Science, Graduate School of Environmental Studies, Tohoku University, Se School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China

会议类型: 国际会议

会议名称: 7th International Conference on Environmental Anaerobic Technologies and Bioenergy(第七届国际环境厌氧技术与生物能源大会)

会议地点: 天津

会议语种:英文

页码: 255-264

在线出版日期: 2011-11-12（万方平台首次上网日期，不代表论文的发表时间）