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. 2024 Mar 18;4(4):1381–1392. doi: 10.1021/acsestwater.3c00542

Figure 1.

Figure 1

Schematic of the laboratory-scale AeMBR and AnMBR treatment systems and their average nutrient and COD concentrations for N = 3 treatment cycles. For AeMBR, an aeration tank preceded the submerged membrane bioreactor (MBR) tank, while for AnMBR, an anaerobic baffled reactor preceded the MBR tank. For each experiment, a 48 h composite sample of wastewater influent was collected. The duration of the composite sampling of the aerobic and anaerobic membrane permeates corresponded to their hydraulic retention times (24 h for the AeMBR and 48 h for the AnMBR).