不同预处理方式对剩余污泥破解率的影响  

Effect of Different Pretreatment Methods on Disruption Rate of Excess Sludge

作　　者：罗渊 乔升 闫敏 蒙秋霞 张家星 李磊 杨治平 LUO Yuan;QIAO Sheng;YAN Min;MENG Qiuxia;ZHANG Jiaxing;LI Lei;YANG Zhiping(College of Resources and Environment,Shanxi Agricultural University,Taiyuan 030031,China;Soil Environment and Nutrient Resources Key Laboratory of Shanxi Province,Taiyuan 030031,China)

机构地区：[1]山西农业大学资源环境学院,太原030031 [2]土壤环境与养分资源山西省重点实验室,太原030031

出　　处：《北京工业大学学报》2025年第4期413-421,共9页Journal of Beijing University of Technology

基　　金：山西省重点研发计划资助项目(201903D211011-02);山西省“1331工程”资助项目(20211331-15);山西农业大学校企合作资助项目(2023HX004、2023HX006)

摘　　要：为提高剩余污泥资源化利用率,首先采用单因素试验法探究4种预处理方式对污泥破解率的影响,然后对比联合预处理的破解效果,确定最佳的联合预处理方式,通过光学显微镜观察对比破解前后剩余污泥的形貌变化,最后利用激光粒度分析仪测定污泥的粒径变化。结果表明:超声波、热水解、表面活性剂以及复合酶4种方式单独预处理时,超声波预处理对污泥的破解效果最好,在0.15 W/mL能量密度以及10.0 min超声时间下,污泥破解率为18.1%;表面活性剂预处理对污泥破解的效果最差,60 mg/g单位污泥总固体添加量下,污泥破解率仅为8.5%。相较于单独预处理,表面活性剂联合超声波预处理表现出协同作用,污泥破解率提高9.0%,污泥粒径减小45.5%~67.9%。To enhance the utilization rate of excess sludge resources,the effects of four pretreatment methods on sludge disruption rate were investigated by single factor test.Subsequently,the disruption effect of combined pretreatment was compared,and the best combined pretreatment method was determined.The morphological changes of excess sludge before and after disruption were observed by optical microscope.Finally,the change of sludge particle size was measured by laser particle size analyzer.Results show that ultrasonic pretreatment has the best effect on sludge disruption among ultrasonic,thermal hydrolysis,surfactant and complex enzyme pretreatment.The sludge disruption rate is 18.1%under 0.15 W/mL energy density and 10.0 min ultrasonic time.The surfactant pretreatment on sludge disruption has the least impact,and the sludge disruption rate is only 8.5%at 60 mg/g addition.Compared to the single pretreatment,the surfactant combined with ultrasonic pretreatment exhibits a synergistic effect.The sludge disruption rate increases by 9.0%,and the sludge particle size decreases by 45.5%-67.9%.

关 键 词：剩余污泥 污泥破解率 联合预处理 超声波 表面活性剂 污泥粒径 

分 类 号：X705[环境科学与工程—环境工程]