Fig. 1: Scheme of the PNA MBBRs at the Sjölunda WWTP and the experimental design. | npj Biofilms and Microbiomes

Fig. 1: Scheme of the PNA MBBRs at the Sjölunda WWTP and the experimental design.

From: Disturbance-based management of ecosystem services and disservices in partial nitritation-anammox biofilms

Fig. 1

a Layout of the WWTP and the PNA MBBRs. White arrows indicate the water flow. The black arrows indicate transfer of biofilm carriers between the PNA MBBRs (yellow/black). b Biofilm carriers were either kept in the mainstream PNA MBBR (S0%), moved to the sidestream PNA MBBR (S100%), or moved between the mainstream and the sidestream in 2-week periods according to the time schedule (S21%, S50% and S79%). Initial samples from the mainstream PNA MBBR, at time zero were also analyzed (Seed). The 2-week rotation periods were repeated four times over the course of 58 days.

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