The influence of zeolite (clinoptilolite) on the performance of a hybrid membrane bioreactor

This work aims to investigate the effect of clinoptilolite on the performance of membrane bioreactor (MBR). The control membrane bioreactor without clinoptilolite (CMBR) and the hybrid membrane bioreactor with clinoptilolite (HMBR), in two parallel simultaneous MBRs within long and short term filtra...

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Bibliographic Details
Published in:Bioresource technology 2014-04, Vol.158, p.25-31
Main Authors: REZAEI, M, MEHRNIA, M. R
Format: Article
Language:English
Subjects:
Applied sciences
Biological and medical sciences
Bioreactors
Biotechnology
Culture Media
Exact sciences and technology
Filtration
Flux
Fundamental and applied biological sciences. Psychology
Membranes
Membranes, Artificial
Methods. Procedures. Technologies
Particle Size
Performance indices
Pollution
Sewage
Sludge
Various methods and equipments
Waste water
Wastes
Zeolites
Zeolites - chemistry
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Summary:This work aims to investigate the effect of clinoptilolite on the performance of membrane bioreactor (MBR). The control membrane bioreactor without clinoptilolite (CMBR) and the hybrid membrane bioreactor with clinoptilolite (HMBR), in two parallel simultaneous MBRs within long and short term filtration experiments, were studied. Sludge properties, transmembrane pressure (TMP) rise as an index for membrane fouling and nutrient removal from synthetic wastewater in the CMBR and HMBR were compared. In HMBR, sludge properties improvement such as 22.5% rise in MLSS, 7% more accumulation of large particles, reduction of soluble microbial products (SMP) to half of this value in CMBR, no increase in sludge volume index (SVI) and 66% TMP reduced. The results of short term filtration showed that the trend of TMP increase in terms of flux will be slower in HMBR. Improvement of biological wastewater treatment quality and ease of membrane operation are concluded from this study.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2014.01.138