投加不同有机晶核的好氧颗粒污泥培养及比较

Cultivation and Comparison of Aerobic Granular Sludge with Addition of Different Organic Crystal Nucleus

采用3组气提式序批反应器(SBAR),以絮状污泥为接种污泥,用人工配制的模拟生活污水,在投加不同的晶核物质的条件下,研究投加不同的晶核对好氧颗粒污泥的形成的影响。其中,R1(对照组)、R2(投加厌氧颗粒污泥)、R3(投加破碎后的厌氧颗粒污泥),经60 d好氧颗粒污泥成熟,成熟颗粒污泥SVI降到35 mL/g,COD去除率达到95%。可以看出,破碎厌氧颗粒污泥的投加比普通絮状活性污泥更有利于促进絮状污泥的颗粒化,但R3中形成的颗粒形状不均匀,且稳定性、抗冲击能力较差,在温度降低之后,R3也最先破碎。

The effect of different organic crystal nucleus on aerobic granules sludge （ AGS） under the condition of applying 3 sequencing batch airlift reactors（ SBAR） is studied and floc sludge as seeding sludge in synthetic domestic wastewater is used. Three reactors - R1, R2, R3,are set,respectively named as control group,adding anaerobic granular sludge and adding crushed anaerobic granular sludge particle. When aerobic granular sludge reaches 60 d,SVI stabilizes to 35 mL/g and the removal rate of C0D reaches 95%,it is shown that the effect of adding crushed anaerobic granular sludge is better than that of conventional activated sludge in promoting the granulation of flocculent sludge. While the particle shape in R3 is not uniform,the stability and anti-impact capability is poorer than that of R2,therefore when the temperature falls,R3 breaks first.