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1. 发明申请

WO2011103286A3 SOLIDS RETENTION TIME UNCOUPLING BY SELECTIVE WASTING OF SLUDGE 审中-公开
标题翻译：固体保留时间通过选择性污泥的消除而消除
公开(公告)号：WO2011103286A3
公开(公告)日：2011-12-22
申请号：PCT/US2011025242
申请日：2011-02-17
申请人： UNIV SOUTH FLORIDA , STROOT PETER G
发明人： STROOT PETER G
IPC分类号： C02F3/34 , B01D21/06 , C02F11/12
CPC分类号： C02F3/307 , B01D21/06 , B01D21/245 , B01D21/302 , B01D21/305 , B01D21/34 , C02F3/006 , C02F3/12 , C02F3/302 , C02F2209/36 , Y02W10/15
摘要： Fluorescence in situ hybridizations were used to identify and determine the abundance of nitrifying bacteria and Anammox bacteria (recycling bacteria) in freshly settled sludge of biological nutrient removal (BNR) secondary clarifiers. An uneven distribution was observed for recycling bacteria in two BNR systems. Settling patterns suggest microcolony formation processes are sensitive to the internal recycle rate, which allow for rapid recycling bacteria microcolony growth by increasing circulation of flocs through the aeration and anoxic basins. Sludge containing high levels of recycling bacteria are selectively collected and separated from the remaining sludge, uncoupling the solids retention time (SRT) of the recycling bacteria from the wasting bacteria. Elevated recycling bacteria SRTs increase concentrations of nitrifying bacteria in the aeration basin and Anammox bacteria in the anoxic basin, improving nitrification and anaerobic ammonium oxidation. Uncoupling the SRT enhances aeration and/or anoxic basin utilization and reduces the overall hydraulic residence time.
摘要翻译：荧光原位杂交用于鉴定和确定生物营养物去除（BNR）二次澄清池新鲜沉淀的污泥中硝化细菌和厌氧菌（循环细菌）的丰度。观察到在两个BNR系统中回收细菌的不均匀分布。沉降模式表明微生物形成过程对内部循环利用率敏感，这允许通过增加通气和缺氧盆地的絮凝物的循环来快速回收细菌微菌落生长。选择性收集含有高水平回收细菌的污泥，并从剩余的污泥中分离出来，从循环细菌中分离回收细菌的固体滞留时间（SRT）。升高的循环细菌SRTs增加了无氧盆地曝气池和厌氧细菌中硝化细菌的浓度，改善了硝化和厌氧氨氧化。解耦SRT增强了曝气和/或缺氧池的利用率，并降低了整体的液压停留时间。

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