“…So far, strains from a few QQ bacterial genera (i.e. Pseudomonas, Rhodococcus, Lactobacillus, Delftia) have been reported to have the potential to reduce MBR biofouling (Gül et al, 2018;Huang et al, 2019;Kaur & Yogalakshmi, 2018;Weerasekara et al, 2016). However, rarely were these QQ bacteria isolated from an MBR sludge before being applied in another MBR for fouling reduction.…”