超声波强化剩余活性污泥缺氧/好氧消化的研究  

Enhanced Anoxic/Aerobic Digestion of Waste Activated Sludge by Ultrasound

作　　者：童文锦[1] 孙水裕[1] 李楚华 郑莉[1] 姚炜婷[1] 占星星[1] 

机构地区：[1]广东工业大学环境科学与工程学院,广东广州510006 [2]广州沥滘污水处理厂,广东广州510290

出　　处：《环境科学与技术》2011年第4期14-17,共4页Environmental Science & Technology

基　　金：广东省教育部产学研合作专项资金项目(2008B0905200253)

摘　　要：试验选取超声波声能密度、超声时间、超声间隔3个因素设计正交实验,研究了超声波对城市污水剩余活性污泥(WAS)的缺氧/好氧消化的作用。结果表明,经超声辐照的WAS缺氧/好氧消化9天后,MLVSS去除率最高达50.9%,比未经超声辐照的提高了14.4%。对实验结果的分析表明,超声波强化WAS的缺氧/好氧消化的最佳参数为:超声声能密度0.15 W/mL、超声时间10 min、超声间隔12 h。在最佳条件下,选取不同比例的污泥进行超声处理,研究了不同比例对WAS的缺氧/好氧消化效果的影响,结果发现在经过超声污泥的比例为30%时消化效果最佳,且消化效果随比例的增大而加强。An experimental program of orthogonal design was done to determine the most effective treatment conditions of the ultrasonic density,time and interval on the anoxic/aerobic digestion of waste activated sludge（WAS）.Results showed that the maximum removal rate of MLVSS reached 50.9% after 9d digestion with ultrasonic treatment,14.4% higher than that without ultrasonic treatment,and the optimal treatment conditions were ultrasonic density at 0.15W/mL,ultrasonic time at 10min,ultrasonic interval at 12h.Under the optimal treatment conditions,different proportions of WAS with ultrasonic treatment were evaluated.Results showed that the optimal proportion was at 30% and removal efficiencies of MLVSS increased with increase of the WAS proportion.

关 键 词：缺氧/好氧消化 超声波 剩余活性污泥 

分 类 号：X705[环境科学与工程—环境工程]