超声-碱预处理以促进污泥水解效率的研究进展  

Research progress on the improvement of hydrolysisefficiency by ultrasonic-alkali pretreatment of sludge

作　　者：张婧伟 白周央 杨树成[1] Zhang Jingwei;Bai Zhouyang;Yang Shucheng(School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《工业水处理》2020年第4期12-17,共6页Industrial Water Treatment

基　　金：国家自然科学基金资助项目(51308453)。

摘　　要：水解阶段是剩余污泥厌氧消化的限速步骤,超声波和碱处理可促使污泥絮体结构解散和内部物质释放,提升污泥的厌氧消化性能。综述了近年来国内外对超声波和碱处理污泥的研究进展,对超声和碱联合处理污泥的工艺条件如超声频率和功率、碱的种类和投加量、处理时间,以及预处理效果,如污泥絮体和细胞破坏情况、释放产物等进行重点分析。The hydrolysis stage is the rate-limiting step of anaerobic digestion of excess sludge.Treatment of sludge with ultrasonic or alkali can promote the dissolution of sludge floc structure and the release of internal substances,remove the hydrolysis restriction,and improve the anaerobic digestion performance of the sludge.The research pro-gress on ultrasonic and alkali treatment of sludge in recent years is reviewed.The process conditions of ultrasonic and alkali combined treatment,such as ultrasonic frequency and power,alkali type and dosage,processing time,are ana-lyzed.Especially,the effects of pretreatment,such as changes in sludge flocs and cell destruction,the release of pro-ducts,are analyzed.

关 键 词：超声 碱处理 剩余污泥 厌氧消化 预处理 

分 类 号：X703[环境科学与工程—环境工程] TU992.3[建筑科学—市政工程]