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1、密级:学校代码:10075分类号:学号:20101047理学硕士学位论文复频超声降解甲基橙模拟废水的实验研究学位申请人:程琛指导教师:闫正教授学位类别:理学硕士学科专业:环境工程授予单位:河北大学答辩日期:二○一三年六月ClassifiedIndex:CODE:10075U.D.C.:NO:20101047ADissertationfortheDegreeofM.ScienceExperimentalStudyonDegradationofMethylOrangeSimulationWastewa
2、terbyMulti-frequencyUltrasonicCandidate:ChengChenSupervisor:Prof.YanZhengAcademicDegreeAppliedfor:MasterofScienceSpecialty:EnvironmentalEngineeringUniversity:HebeiUniversityDateofOralExamination:June,2013摘要摘要近年来,超声水处理技术作为新型的水处理方法被研究应用,而单一频率的超声对有机物的处理效
3、果有限,本研究以增加混响场的声能和超声频率作用范围来提高空化作用效果,采用自制复频超声波污水处理装置降解有机模拟废水。随着工业的发展,被广泛用于纺织、印染和食品等工业的偶氮染料有机废水成为传统治理方法的治理难题,本课题选择偶氮染料甲基橙模拟废水为研究对象,采用复频超声处理,研究分析降解效果,辅以抗生素土霉素废水佐证。(1)以偶氮染料甲基橙模拟废水为研究对象,采用自制复频超声波污水处理装置降解甲基橙废水,用正交实验考察影响复频(20kHz+100kHz+200kHz)超声降解甲基橙的因素,在昀佳工艺
4、条件下改变溶液pH、体系温度、氯盐加入种类和加入量,用分光光度法测定吸光度、重铬酸钾法测定COD。结果表明正交因子对甲基橙脱色率的影响权重:超声功率>作用时间>初始浓度。昀佳工艺条件:功率150W,复频超声作用90min,甲基橙溶液初始浓度10mg/L,脱色率89.6%;溶液pH2时,脱色率98%;添加0.75g/L的CaCl甲基橙脱色率和COD去除率均超过96%。2(2)复频超声对低效价抗生素废水中土霉素的去除效果明显,复频100kHz+200kHz、功率100W,20min去除率即达到90%以
5、上,25min时已经超过95%,45min达到100%。关键词复频超声甲基橙土霉素脱色率去除率正交实验IAbstractAbstractInrecentyears,ultrasonicsewagetreatmenttechnologyasanewtypeofsewagereatmentmethodswasresearchedandapplied.Becausethetreatmenteffectsofsingle-frequencyultrasonictoorganiccompoundswerel
6、imited,cavitationeffectswereimprovedbyincreasingtheultrasonicpowerofreverberantfieldandbroadeningultrasonicfrequencyrange,andself-mademulti-frequencysewagetreatmentdevicewasusedforthetreatmentoforganicsimulationwastewaterinthisresearchWiththedevelopme
7、ntoftheindustry,azodyewerewidelyusedintextile,printinganddyeing,andfoodindustries,andazodyewastewaterbecamegovernancechallengestotraditionalmanagementmethods.Thistopicchoseazodyemethylorangesimulationwastewaterastheresearchobject,adoptedmulti-frequenc
8、yultrasonicprocessing,studiedthedegradationeffect,andwhichweresupportedbymulti-frequencyexperimentevidenceofantibioticoxytetracyclinewastewater(1)Takingazodyemethylorangesimulationwastewaterastheresearchobject,thedegradationfactorsofmethyloran
