正交实验优化超声波预处理污泥的工况研究  

A study on optimal ultrasonic conditions for sludge pretreatment with orthogonal experiments

作　　者：郑莉[1] 孙水裕[1] 许燕滨[1] 李楚华 童文锦[1] 姚炜婷[1] 

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

出　　处：《环境工程学报》2010年第11期2613-2618,共6页Chinese Journal of Environmental Engineering

基　　金：广东省教育部产学研合作专项基金资助项目(2008B090500253)

摘　　要：在污泥浓度为9 915 mg/L时,选取超声频率、超声声强和超声时间3个因素设计正交实验,以污泥破解度(DDSCOD)、污泥好氧率(SOUR)和脱氢酶(DHA)活性作为指标,对超声波预处理的工况进行了优化。研究结果表明,最佳的超声预处理参数组合为:超声频率28 kHz,声能密度0.15 W/mL,超声时间10 min。此外,研究还发现不同浓度的污泥,对应的最佳超声组合参数也不同。The purpose of this study is to optimize the ultrasonic conditions for sludge pretreatment at a concentration of 9 915 mg/L.In this study,the ultrasonic pretreatment parameters such as ultrasonic frequency,intensity,and treatment time were evaluated through orthogonal experiments based on DDSCOD,SOUR and DHA.The results indicated that the optimal conditions of ultrasonic pretreatment were as follows： ultrasonic frequency of 28 kHz,ultrasonic intensity of 0.15 W/mL,and ultrasonic treatment time of 10 min.It was found that different sludge concentrations corresponded to different optimal ultrasonic pretreatment conditions.

关 键 词：超声波 污泥预处理 正交实验 参数优化 

分 类 号：X705[环境科学与工程—环境工程]