The Roberts Wastewater Treatment Plant (WWTP; Village of Roberts, WI, USA) has an average influent flow of 410 m 3 •day -1 and a design flow of 568 m 3 •day -1 for a municipality of nearly 2,000 residents. The Wisconsin Department of Natural Resources decreased the Roberts WWTP's Wisconsin Pollutant Discharge Elimination System's (WPDES No. 0028835) 6-month average effluent phosphorus limit from 1 mg-P•L -1 to 0.04 mg-P•L -1 , effective February 1, 2021, to protect and recover the water quality of the effluent receiving bodies, the East and West Twin Lakes. The EcoRecover process, which the Village elected to implement for phosphorus-removal, was constructed in 2020 and 2021 (Figure , SI Figure ). Secondary effluent from sequencing batch reactors (SBRs) is mixed with the microalgal community in a mix tank (average working volume of 98 m 3 gal) before being sparged with CO2 and pumped through five parallel sets of PBRs (77.6 m 3 total). The PBRs are housed in a greenhouse and, in addition to daylight, received supplemental lighting from above (54 LEDs; California Light Works MegaDrive™ Centralized Power LED Network) at an intensity of 17 to 50 µE•m -2 •s -1 of photosynthetically active radiation (PAR) measured at the top surface of the PBRs (SI_SCADA.xlsx supplemental dataset). The separation of HRT and SRT is achieved via submerged, hollow fiber ultrafiltration modules in two parallel membrane tanks with average transmembrane pressure of 15.4 kPa (Puron ultrafiltration hollow fiber submerged membrane module; Model PHF960; 3.8 m 3 working volume per train, 18 rows per module, 0.03 µm pores; Koch Separation Solutions, Inc.). A fraction of the permeate is stored in an 11.4 m 3 reuse tank (average measured HRT of <10 min) for membrane backwashing while the remainder is discharged as effluent. Harvested solids are pumped from the membrane tank and dewatered via centrifugation (Disk Stack Clarifier AC1200-410; Flottweg Separation Technology; Independence, KY, USA). Centrate is mixed in a return tank (6.4 m 3 ; average measured HRT of 20 min) with the PBR recycle flow and retentate from the membrane tanks before the combined flow returns to the mix tank.