Advanced treatment of antibiotic wastewater by nanofiltration: membrane selection and operation optimization

Orthogonal experiments of L9(34) were carried out to select suitable nanofiltration (NF) membrane and optimize operational conditions of NF for advanced treatment of antibiotic wastewater by three commercial membranes (Osmonics, Sepro and Synder Corp). Results showed that the GE membrane was selecte...

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Bibliographic Details
Published in:Desalination and water treatment 2014-12, Vol.52 (40-42), p.7575-7585
Main Authors: Wang, Jianxing, Wei, Yuansong, Cheng, Yutao
Format: Article
Language:English
Subjects:
ANOVA
Antibiotic wastewater
Antibiotics
Flux
Membrane selection
Membranes
Nanofiltration
Orthogonal method
Pollutants
Rejection rate
Waste water
Wastewater treatment
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Summary:Orthogonal experiments of L9(34) were carried out to select suitable nanofiltration (NF) membrane and optimize operational conditions of NF for advanced treatment of antibiotic wastewater by three commercial membranes (Osmonics, Sepro and Synder Corp). Results showed that the GE membrane was selected through comparing membrane flux and pollutants rejections, and its optimal conditions were at transmembrane pressure (TMP) of 10 bar and pH of 5.0. Under these optimized conditions, the permeate flux reached 64.7 L/h m2, and the rejection rates of total organic carbon, chemical oxygen demand, UV254, color, and turbidity were 99.3, 91.8, 91.5, 100, and 87.2%, respectively. The rejection rates of multivalent ions were higher than 93%. Humic-like and soluble microbial by-product-like substances in the feed water could be effectively removed. Analysis of variance showed that TMP was the major factor of both permeate flux and monovalent anion removal (p 
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2013.833868