A pilot-scale anaerobic membrane bioreactor (AnMBR) system was operated at a salad dressings and barbeque sauce production facility for six months to investigate the suitability of the ADIAnMBR process for upgrading the existing wastewater treatment system to treat additional flow and
load. Lack of space and superior economics made converting the existing anaerobic process to AnMBR an attractive option. The AnMBR pilot operated under three operating conditions at mesophilic temperature. Two operating conditions involved treating the existing anaerobic reactor supernatant
recycle stream at organic loading and membrane flux rates of 4.5 – 6.5 kg COD/m3-d and 0.10 – 0.133 m3/m2·d, respectively. The third operating condition involved treating raw wastewater directly in the AnMBR pilot at the same design
organic loading (2.0 kg COD/m3-d) and membrane flux rates (0.10 m3/m2·d) as the proposed AnMBR system. The AnMBR pilot system consistently provided BOD removals over 99 percent when directly treating raw wastewater, and in combination with the
existing anaerobic reactor when treating the anaerobic reactor supernatant recycle. Over the 24 weeks of AnMBR piloting, the AnMBR effluent BOD and TSS concentrations were consistently less than 100 mg/l and 1 mg/l, respectively. The pilot exhibited negligible fouling (with no citric
acid cleaning) over an operating period of 162 days and successfully operated at a sustained peak flux rate of 0.133 m3/m2·d.
Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.