Membrane fouling in thermophilic aerobic membrane distillation bioreactor treating hospital wastewater
نویسندگان
چکیده
In the membrane distillation bioreactor (MDBR) process, flux increases with increasing feed temperature, but presence of microorganisms limits temperature. Also, accumulation cells and other substances on surface can affect efficiency MDBR. this study, hospital wastewater was treated by thermophilic activated sludge MDBR, initial 7.87 L‧m−2·h−1 stable 3.88 L‧m−2·h−1. The particle size, zeta potential hydrophobicity in MDBR were 2.25 µm, −14 mV 24%, respectively. addition, EPS (extracellular polymeric substances) SMP (soluble microbial products), having a significant effect fouling, determined to be 201.50 mg·L−1 669.35 Contact angle, FTIR (Fourier transform infrared), SEM (scanning electron microscope) EDX (energy dispersive X-ray spectroscopy) measurements also made virgin used membrane. Analysis EDX, F-TIR showed that fouling caused CaCO3 EPS.
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ژورنال
عنوان ژورنال: Water SA
سال: 2022
ISSN: ['0378-4738', '1816-7950']
DOI: https://doi.org/10.17159/wsa/2022.v48.i4.3930