四级A/O镶嵌MBBR工艺在高原污水厂的设计应用
宋海东, 魏琦, 蒋伟国, 李志伟

Design and application of four-stage A/O and MBBR process in plateau wastewater treatment plant
Haidong SONG, Qi WEI, Weiguo JIANG, Zhiwei LI
图6 门水平(a)和属水平(b)上的物种相对丰度
Fig. 6 Relative abundance distribution at phylum (a) and genus level (b)