ClO2耦合超声波破解污泥回流SBR系统的隐性生长污泥减量研究
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2020-04-09 22:28:59
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INDUSTRIALWATER&WASTEWATER工业用水与废水Vo1.45No.1Feb..20145固废处理2CIO2耦合超声波破解污泥回流SBR系统的隐性生长污泥减量研究王广华,李义勇,胡勇有,林嘉添,梁树煜,沈会山(华南理工大学环境与能源学院,广州510006)摘要:为了考察系统污泥减量效果及污泥回流对系统污水处理效果的影响,探讨实现污泥减量的机制,将7O%剩余污泥经C10,耦舍超声波处理后回流至SBR中试系统.运行30d.测定系统累计排泥量、系统出水水质、污泥活性、污泥沉降性能等指标。结果表明,经C10,耦合超声波处理后的剩余污泥回流至系统后,产泥量减少了54.86%。污泥回流对SBR系统的SS、CODNH3-N和TN去除效果无影响,对TP的去除率有所降低。当量表观污泥产率从对照组的0.410kg[SS]/kg[COD。]降低到了0.186kg[SS]/kg[COD。],'-3量衰减系数由对照组的0.0360d提高到0.0602d一。系统能保证出水水质稳定。污泥减量效果显著。关键词:CIO耦合超声波;污泥减量;污泥破解;表观污泥产率;衰减系数中图分类号:X703.1文献标识码:A文章编号:1009—2455(2014)0l一0085—07SludgereductioninSBRbylysis-crypticgrowthusingClOa-uItraSOniCatiOndisruptionWANGGuang-hua,LIYi-yong,HUYong-you,LINJia-tian,LIANGShu—kun,SHENHui—shan(CollegeofEnvironmentandEnergy,SouthChinaUniversityofTechnology,Guangzhou51ooo~China)Abstract:ForthepurposeofinvestigatingtheinfluencesofsludgereductionandsludgereturninSBRonwastewatertreatmenteffect,anddiscussingthemechanismofsludgereduction,70%oftheexcesssludgepretreatedbyC102-uhrasonicationdisruptionwasreturnedintothepilotsystemoftheSBR,througha30-dayoperation,totalemissionamountofsludge,efluentwaterquality,sludgeactivity,sludgesettleabilityandsomeotherindexesofthesystemweredetermined.Theresultsshowedthat,aftertheexcesssludgepretreatedbyC102一uhrasonicationdisruptionreturnedintothesystem,thesludgeoutputreduced54.86%,therefore,itcoulddrawaconclusionthat,sludgereturnhadnoaffectonSS,CODcr,NH3一NandTNremovalwhiledecreasedtheremovalrateofTPatthesametime.Throughthementionedtreatment,theobservedbiomassyieldofthesludgedecreasedfrom0.410(controlgroup)to0.186kg[SS]/kg[C0Dcr](experimentalgroup),theattenuationcoeficientincreasedfrom0.0360(controlgroup)to0.0602d(experimentalgroup),theefluentwaterqualitywasstableandthesludgereductioneffectwasnotable.Keywords:C102一ultrasonication;sludgereduction;sludgedisruption;observedbiomassyield;attenuationcoeficient近年来剩余污泥的处理处置已经成为城市环境保护迫切需要解决的问题。污泥原位减量技术基金项目:广东省科技计划项目(猢A0323O2oo1)(Sludgereduction或Sludgeminimization)于20世纪90年代提出,它为污泥处理、处置提供了一条新·85·INDUSTRIALWATER&WASTEWATER工
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