Figure 6. (A) ratio of Microcystis sp. size to
microbubble size; (B) cluster analysis of Microcystis sp. and
microbubble particle size
The cluster analysis results of the size ratio of Microcystis and
microbubble are shown in Fig. 6(B). Class II analysis were carried out
and the clustering centers were 1.03 and 2.24. The proportion of cases
in each clustering center was 76% and 23%, respectively. The cluster
centers of the Class III analysis were 0.9,1.67 and 2.89, accounting for
58%, 34% and 8%, respectively. Based on the results of the two types
of analysis, it is known that in the formed microbubble-algae
combination, the proportion of Microcystis/microbubble size ratio of
1.03 and 0.9 is the highest, and both exceed 50%. When the size ofMicrocystis is equivalent to the size of microbubbles, the two
are most likely to adhere.