Formation of aerobic granular sludge was examined in a novel continuous flow configuration, at 20 ± 1 °C. Synthetic proteinaceous wastewater with municipal primary effluent characteristics was used (i.e., COD = 370 ± 30 mg/L; TN = 43 ± 7 mg/L; and TP = 10 ± 2 mg/L). Various levels of selective pressure were applied after inoculation with flocculent sludge (i.e., estimated velocity gradients during settling between 1 and 9 1/s). Impeller rpm of 15 and below generated floccular-granular biomass, while 20 rpm and above generated large granules with a filamentous population. Effluent soluble COD, total inorganic nitrogen, and phosphate of 25 ± 7 mg/L, 11 ± 1 mg/L, and 0.1 ± 0.1 mg/L, respectively, were obtained. Observed yields were as low as 0.08–0.19 g-VSS/g-COD and whole sludge solids retention time was 18 ± 1 d. Famine conditions developed for 90% of the total aerobic volume and >45 ± 3% anaerobic substrate utilization was recorded. Aerobic granulation was demonstrated feasible under continuous flow providing adequate treatment with low biomass yields.

在20±1°C下以新型连续流形式检查好氧颗粒污泥的形成。使用具有市政主要污水特性的合成蛋白质废水（即，COD = 370±30 mg / L； TN = 43±7 mg / L； TP = 10±2 mg / L）。接种絮状污泥后施加各种水平的选择压力（即，沉降过程中估计的速度梯度介于1和9 1 / s之间）。叶轮转速在15 rpm以下时会产生絮状颗粒生物质，而叶轮转速在20 rpm以上时会产生带有丝状种群的大颗粒。得到的废水可溶性COD，总无机氮和磷酸盐分别为25±7 mg / L，11±1 mg / L和0.1±0.1 mg / L。观察到的产量低至0.08-0.19 g-VSS / g-COD，整个污泥固体保留时间为18±1 d。记录为有氧总体积的90％和> 45±3％的厌氧底物利用率开发的饥荒条件。有氧制粒被证明在连续流下是可行的，提供了低生物量产量的充分处理。