Devlin Tanner Ryan, Kowalski Maciej S, di Biase Alessandro, Oleszkiewicz Jan A
Department of Civil Engineering, University of Manitoba, Winnipeg, Canada.
Environ Technol. 2020 Apr;41(11):1455-1463. doi: 10.1080/09593330.2018.1538258. Epub 2018 Nov 8.
Three parallel reactors (i.e. R1-R3) were operated with 340 mg-COD L, 42 mg-TN L, and 7 mg-TP L at 20 ± 1°C. A mature granular sludge developed in 40 d and was stable for the 120 d experimentation period at an average food to microorganism ratio of 0.25 ± 0.08 g-COD g-VSS d. Reactor biomass had higher inorganic content (i.e. 0.78-0.80 g-VSS g-TSS) than effluent biomass (i.e. 0.88-0.92 g-VSS g-TSS). Average granule diameter was 0.7-1.0 mm. Maximum phosphorus uptake and release rates averaged 4 ± 3 and 4 ± 2 mg-P g-VSS h, respectively. Maximum observed nitrification rates averaged 1.9 ± 0.6 mg-N g-VSS h. Phosphorus kinetics were similar between R1-R3 (i.e. = 0.5309-0.6870) while nitrification kinetics varied significantly (i.e. = 0.0002) even though conditions were the same. Effluent phosphate was on average 0.2 ± 0.4 mg-P L while total inorganic nitrogen removal averaged 60 ± 10% resulting in an average effluent of 17 mg-N L. Aerobic granular sludge was capable of reliable nutrient removal from low-strength wastewater without volatile fatty acid source and at high dissolved oxygen concentrations.
三个平行反应器（即R1 - R3）在20 ± 1°C的温度下运行，进水化学需氧量（COD）为340 mg/L、总氮（TN）为42 mg/L、总磷（TP）为7 mg/L。在40天内形成了成熟的颗粒污泥，并且在120天的试验期内保持稳定，平均食物与微生物比为0.25 ± 0.08 g-COD/g-VSS/d。反应器内生物质的无机含量（即0.78 - 0.80 g-VSS/g-TSS）高于出水生物质（即0.88 - 0.92 g-VSS/g-TSS）。平均颗粒直径为0.7 - 1.0 mm。最大磷吸收和释放速率分别平均为4 ± 3和4 ± 2 mg-P/g-VSS/h。最大观察到的硝化速率平均为1.9 ± 0.6 mg-N/g-VSS/h。R1 - R3之间的磷动力学相似（即 = 0.5309 - 0.6870），而硝化动力学差异显著（即 = 0.0002），尽管条件相同。出水磷酸盐平均为0.2 ± 0.4 mg-P/L，总无机氮去除率平均为60 ± 10%，导致平均出水总氮为17 mg-N/L。好氧颗粒污泥能够在无挥发性脂肪酸源且溶解氧浓度高的情况下，可靠地从低强度废水中去除营养物质。
