The variation of functional microbes in the culture during the PN process^a.

Name of bacteria		Level	R1	R20	R30
DNB	Pseudomonas	Genus	23	1**	8*
	Paracoccus	Genus	5	150**	50**
PAO	Thiobacillus	Genus	359	12**	0**
	Pseudomonas	Genus	23	1**	8*
	Arthrobacter	Genus	0	32**	3
NOB	Nitrospirales	Order	3	2	2
AOB	Nitrosomonadaceae	Family	457	590**	1880**
Anammox	Planctomyces	Genus	42	2**	1**
Total reads		Genus	17 685	15 562	15 165

^a*, ** statistically significant at p < 0.05 and p < 0.01, respectively.