Table 1.

Recovery rate (%) of viruses on membranes immersed in spiked wastewater and seawater.

	PEDV				SARS-CoV-2
	Nylon		zetapor		Nylon		zetapor
	4 h	24 h	4 h	24 h	4 h	24 h	4 h	24 h
Influent WWTP	0.09 ± 0.1	3.78 ± 2.6	2.4 ± 1.6	4.04 ± 4	0.03 ± 0.02	0.4 ± 0.6	1.69 ± 1.19	4.5 ± 3.03
Seawater	7.5 ± 5.5	15.9 ± 2.4**	3.1 ± 2.2	6.8 ± 0.8	6.5 ± 4.1	15.4 ± 5.6*	1.7 ± 1.2	6.6 ± 4.5

Recovery rates of viruses with membranes exposed for 4 h and 24 h in waters (influent WWTP or seawater) spiked with PEDV and heat-inactivated SARS-CoV-2. Mean value ±SD. Comparisons were made for seawater/influent WWTP with Kruskal-Wallis test: *p < 0.05; ** p < 0.01.