Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia.
Water Res. 2010 Aug;44(15):4341-50. doi: 10.1016/j.watres.2010.05.023. Epub 2010 May 25.
Microbial granular sludge that is capable to treat textile wastewater in a single reactor under intermittent anaerobic and aerobic conditions was developed in this study. The granules were cultivated using mixed sewage and textile mill sludge in combination with anaerobic granules collected from an anaerobic sludge blanket reactor as seed. The granules were developed in a single sequential batch reactor (SBR) system under alternating anaerobic and aerobic condition fed with synthetic textile wastewater. The characteristics of the microbial granular sludge were monitored throughout the study period. During this period, the average size of the granules increased from 0.02 +/- 0.01 mm to 2.3 +/- 1.0 mm and the average settling velocity increased from 9.9 +/- 0.7 m h(-1) to 80 +/- 8 m h(-1). This resulted in an increased biomass concentration (from 2.9 +/- 0.8 g L(-1) to 7.3 +/- 0.9 g L(-1)) and mean cell residence time (from 1.4 days to 8.3 days). The strength of the granules, expressed as the integrity coefficient also improved. The sequential batch reactor system demonstrated good removal of COD and ammonia of 94% and 95%, respectively, at the end of the study. However, only 62% of color removal was observed. The findings of this study show that granular sludge could be developed in a single reactor with an intermittent anaerobic-aerobic reaction phase and is capable in treating the textile wastewater.
在本研究中开发了一种能够在间歇式厌氧和好氧条件下在单个反应器中处理纺织废水的微生物颗粒污泥。该颗粒使用混合污水和纺织厂污泥培养，同时结合从厌氧污泥毯反应器收集的厌氧颗粒作为种子。颗粒在一个交替的厌氧和好氧条件下的单个序批式反应器 (SBR) 系统中使用合成纺织废水进料来开发。在整个研究期间监测了微生物颗粒污泥的特性。在此期间，颗粒的平均粒径从 0.02 +/- 0.01 毫米增加到 2.3 +/- 1.0 毫米，平均沉降速度从 9.9 +/- 0.7 米/小时增加到 80 +/- 8 米/小时。这导致生物量浓度（从 2.9 +/- 0.8 克/升增加到 7.3 +/- 0.9 克/升）和平均细胞停留时间（从 1.4 天增加到 8.3 天）增加。颗粒的强度，以完整性系数表示，也得到了提高。在研究结束时，序批式反应器系统表现出良好的 COD 和氨去除率，分别为 94%和 95%，但仅观察到 62%的颜色去除率。本研究的结果表明，颗粒污泥可以在具有间歇式厌氧-好氧反应阶段的单个反应器中开发，并且能够处理纺织废水。
