给水排水工程专业毕业论文--AAO MBR组合工艺脱氮除磷性能研究.doc

给水排水工程专业毕业论文--AAO+MBR组合工艺脱氮除磷性能研究 摘 要 膜生物反应器embrane Bio-reactorMBR技术具有传统方法所不及的许多优点具有很好的应用前景但高能耗膜污染是影响MBR工艺推广应用的主要障碍我们从曝气方式入手射流曝气膜生物反应器取代了鼓风机通过近天的试验研究此新型MBR系统Research on Treatment of Wastewater by Improved Membrane Bio-reactor Abstract Membrane bioreactor MBR technology has many advantages beyond with traditional methods It has the very good application prospect but energy-intensive Membrane fouling process is the main application of the MBR obstacles We adopted from the aeration of aeration membrane bioreactors and suction pump replaced the blower Through the experimental study of nearly 100 days in this new system with artificial synthesis MBR sewage effect and the possible problems Through the research of oxygen revamp HRT mixture of backflow MLSS ratio the C and N P degrade the performance DO revamp HRT sewage reflux ratio etc and analysis of operation parameters of pollutant removal efficiency of sludge form The test shows in dealing with the synthetic wastewater the system CODCr during the removal rate are greater than 85 of NH3 - N efficiency also maintains in 95 selecting suitable nitrification liquid reflux ratio of total nitrogen removal rate are higher than 70 and the effluent turbidity colorless odorless and 1NTU are less In examining the aeration of sludge form when the effect that the aeration high intensity in the pump shearing force and aeration strong turbulence anaerobic sludge pool became very loose and finely this state of serious impact on the sludge sedimentation performance but more conducive to the degradation of pollutants reactor In addition the experiment of membrane module of flux change before and after cleaning and water quality change made system Keywords MBRmunicipal wastewaterMembrane pollution sludge characteristics 目 录 1 绪 论 1 11 我国水资源现状 1 12 我国城市生活污水处理现状 1 13 膜生物反应器的研究概况 3 com 膜生物反应器简介 3 com 膜生物反应器的研究应用进展 14 14 本文研究目的和研究内容 14 com 研究目的 14 com 研究意义 15 com 研究内容 15 2 实验装置与研究方法 17 21 AAO实验装置脱氮除磷 17 com A