培养过程中接种部分厌氧颗粒污泥促进好氧颗粒化

发布时间：2019-05-09 09:59

【摘要】：接种活性污泥启动SBR后,研究选择压法培养好氧颗粒污泥(AGS)的过程中接种部分厌氧颗粒污泥对好氧颗粒化进程的影响。随着沉降时间的缩短,在第6天时肉眼即可观察到一些明显的生物胶团,第11天接种质量分数为20%的厌氧颗粒污泥时已出现少量AGS。投加厌氧颗粒污泥后反应器内菌胶团及淡黄色的AGS的比例不断增加,22 d时AGS已处于主导地位,26d时颗粒化率首次超过90%并占据绝对优势,表明反应器成功实现好氧颗粒化。观察发现接种的厌氧颗粒污泥经历了先解体再重新颗粒化过程,并可作为新生颗粒的晶核而缩短自凝聚所需时间。培养过程中反应器表现出较好的污染物去除效果,对COD、TIN及TP的去除率基本在90%、90%及87%以上,表明在同一反应器内成功实现了去除有机物及同步脱氮除磷效果。
[Abstract]:The effect of partial anaerobic granular sludge inoculation on aerobic granulation process was studied in the process of selective pressure cultivation of aerobic granular sludge (AGS) after the inoculation of activated sludge (SBR). With the shortening of settling time, some obvious biomicelles could be observed in the naked eye on the 6th day. On the 11th day, a small amount of AGS. appeared when the anaerobic granular sludge with 20% mass fraction was inoculated. After adding anaerobic granular sludge, the proportion of bacterial micelles and yellowish AGS in the reactor increased, AGS was dominant at 22 days, and the granulation rate exceeded 90% for the first time at 26 days, which indicated that aerobic granulation was achieved successfully in the reactor. It was found that the inoculated anaerobic granular sludge underwent the process of disintegration and re-granulation, and it could be used as the crystal nucleus of the new particles to shorten the time required for self-coacervation. The removal rate of COD,TIN and TP was more than 90%, 90% and 87% respectively, indicating that organic matter removal and simultaneous nitrogen and phosphorus removal were achieved successfully in the same reactor.
【作者单位】：江西理工大学建筑与测绘学院;
【基金】：江西省教育厅科技项目(GJJ150627) 国家自然科学基金资助项目(51464014;21467009)
【分类号】：X703

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