Assessment of an Anaerobic Membrane Bioreactor (AnMBR) Treating Medium-Strength Synthetic Wastewater under Cyclical Membrane Operation

Author:

Uman Ahmet E.ORCID,Bair Robert A.,Yeh Daniel H.

Abstract

A lab-scale (6.2 L) anaerobic membrane bioreactor combined with a tubular, cross-flow, PVDF ultrafiltration membrane was developed and operated to assess the long-term fouling behavior of a cyclically operated anaerobic membrane bioreactor (AnMBR). The AnMBR was operated at 35 ± 1 °C for 200 days with a synthetic influent of 501 mg·L−1 COD to mimic municipal wastewater. The system exhibited high treatment performance with an average COD removal efficiency of 86.5 ± 6.4% (n = 20) and an average permeate COD concentration of 63.9 ± 31.1 mg·L−1. A clear permeate with an average turbidity of 0.6 ± 0.2 NTU, was achieved. Permeate TN and TP concentrations were 22.7 ± 5.1 mg·L−1 and 6.9 ± 2.0 mg·L−1 corresponding to removal efficiencies of 20.6% and 49.3%, respectively, likely due to membrane rejection of particulate, colloidal, and organic fractions. A stable membrane flux of 4.3 L.m−2.h−1 (LMH) was maintained for 183 days without gas-lift, gas sparge, or chemical cleaning. Cyclical operation with frequent relaxation (60 s for every 30 min of the permeate production run) and periodic permeate backwash (15 s for every 186 min) maintained stable membrane operation with an average TMP of 0.25 bar and a fouling rate of 0.007 kPa/h for the entire operating period. The comparison revealed frequent backwashing and relaxation is a sustainable strategy for operation of the AnMBR.

Funder

Bill and Melinda Gates Foundation

U.S. Environmental Protection Agency

Publisher

MDPI AG

Subject

Filtration and Separation,Chemical Engineering (miscellaneous),Process Chemistry and Technology

Reference56 articles.

1. ISO 30500:2018—Non-Sewered Sanitation Systems—Prefabricated Integrated Treatment Units—General Safety and Performance Requirements for Design and Testing,2018

2. Domestic Wastewater Treatment as a Net Energy Producer–Can This be Achieved?

3. Membrane bioreactors for use in small wastewater treatment plants: membrane materials and effluent quality

4. The MBR Book: Principles and Applications of Membrane Bioreactors for Water and Wastewater Treatment;Judd,2011

5. Anaerobic Membrane Bioreactors: Applications and Research Directions

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