超声破解促进污泥两相厌氧消化产气性能研究  

STUDY ON ULTRASONIC DISINTEGRATION OF EXCESS SLUDGE FOR IMPROVING ITS BIOGAS YIELD PERFORMANCE OF TWO-PHASE ANAEROBIC DIGESTION

作　　者：吴纯德[1] 史吉航[1] 

机构地区：[1]华南理工大学环境科学与工程学院,广东广州510006

出　　处：《环境工程》2008年第6期7-9,12,共4页Environmental Engineering

基　　金：国家自然科学基金资助项目(20277011)

摘　　要：以超声波对城市污水处理厂剩余污泥进行超声破解。试验结果表明,超声破解能提高污泥的溶解性化学需氧量(SCOD)、总挥发性固体(VS)去除率、生物产气量、产气率和甲烷含量,促进两相厌氧消化产气性能。声能密度和破解时间是影响污泥破解效应的主要因素,超声频率是影响污泥破解效应的次要因素。A study was done on ultrasonic disintegration of excess sludge from a sewage treatment plant.The results indicated that soluble chemical oxygen demand was significantly increased,the removal rate of volatile solid,net bio-gas production and the rate of bio-gas production were also increased,and moreover the content of methane was increased,thus bio-gas yield performance was improved.The main factors affecting ultrasonic disintegration were sound energy density and disintegration time,and the secondary factor was ultrasound frequency.

关 键 词：剩余污泥 两相厌氧消化 超声破解 沼气 

分 类 号：X703[环境科学与工程—环境工程]