MBR处理生活污水中操作条件对膜污染速率的影响的开题报告摘要：膜生物反应器（MBR）已成为一种有效的处理生活污水的技术。然而，在实际应用中，膜污染问题仍然是制约MBR应用和推广的主要问题之一。因此，为了进一步完善和优化MBR处理生活污水的性能，本文进行了一系列实验研究，探讨了不同操作条件对膜污染速率的影响。实验结果表明，MBR系统的稳态反应时间对膜污染速率具有明显的影响。随着稳态反应时间的延长，膜污染速率逐渐下降。此外，膜污染速率还受到曝气量及污泥浓度的影响。曝气量的增加会促进生物膜的生长和代谢活动，从而降低膜污染速率。而随着污泥浓度的增加，MBR系统中的污泥染料也会增加，导致膜污染速率加快。因此，本文建议在实际应用中，应注意控制MBR系统的稳态反应时间、曝气量和污泥浓度等操作条件，以最大限度地减少膜污染速率，保证MBR系统的稳定性和长久的运行。关键词：膜生物反应器；生活污水；膜污染速率；稳态反应时间；曝气量；污泥浓度。Abstract：Membranebioreactor(MBR)isbecominganeffectivetechnologyfortreatingdomesticwastewater.However,membranefoulingisstilloneofthemainproblemsthatrestricttheapplicationandpromotionofMBR.InordertofurtherimproveandoptimizetheperformanceofMBRintreatingdomesticwastewater,aseriesofexperimentswereconductedinthispapertoexploretheeffectsofdifferentoperatingconditionsonmembranefoulingrate.Theexperimentalresultsshowedthatthesteady-statereactiontimeoftheMBRsystemhasasignificanteffectonthemembranefoulingrate.Asthesteady-statereactiontimeincreases,themembranefoulingrategraduallydecreases.Inaddition,themembranefoulingrateisalsoaffectedbytheaerationrateandsludgeconcentration.Increasingtheaerationratecanpromotethegrowthandmetabolicactivityofbiofilms,thusreducingthemembranefoulingrate.Withtheincreaseofsludgeconcentration,thesludgedyeintheMBRsystemwillalsoincrease,leadingtotheaccelerationofmembranefoulingrate.Therefore,itisrecommendedtocontroltheoperatingconditionssuchassteady-statereactiontime,aerationrateandsludgeconcentrationintheactualapplication,soastominimizethemembranefoulingrate,ensurethestabilityandlong-termoperationoftheMBRsystem.Keywords:Membranebioreactor;domesticwastewater;membranefoulingrate;steady-statereactiontime;aerationrate;sludgeconcentration.