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Influences of mechanical pretreatment on the non-biological treatment of municipal wastewater by forward osmosis

Hey, Tobias LU ; Zarebska, Agata; Bajraktari, Niada; Vogel, Jörg; Hélix-Nielsen, Claus; la Cour Jansen, Jes LU and Jönsson, Karin LU (2016) In Environmental Technology
Abstract

Municipal wastewater treatment involves mechanical, biological and chemical treatment steps for protecting the environment from adverse effects. The biological treatment step consumes the most energy and can create greenhouse gases. This study investigates municipal wastewater treatment without the biological treatment step, including the effects of different pretreatment configurations, for example, direct membrane filtration before forward osmosis. Forward osmosis was tested using raw wastewater and wastewater subjected to different types of mechanical pretreatment, for example, microsieving and microfiltration permeation, as a potential technology for municipal wastewater treatment. Forward osmosis was performed using Aquaporin... (More)

Municipal wastewater treatment involves mechanical, biological and chemical treatment steps for protecting the environment from adverse effects. The biological treatment step consumes the most energy and can create greenhouse gases. This study investigates municipal wastewater treatment without the biological treatment step, including the effects of different pretreatment configurations, for example, direct membrane filtration before forward osmosis. Forward osmosis was tested using raw wastewater and wastewater subjected to different types of mechanical pretreatment, for example, microsieving and microfiltration permeation, as a potential technology for municipal wastewater treatment. Forward osmosis was performed using Aquaporin Inside™ and Hydration Technologies Inc. (HTI) membranes with NaCl as the draw solution. Both types of forward osmosis membranes were tested in parallel for the different types of pretreated feed and evaluated in terms of water flux and solute rejection, that is, biochemical oxygen demand (BOD7) and total and soluble phosphorus contents. The Aquaporin and HTI membranes achieved a stable water flux with rejection rates of more than 96% for BOD7 and total and soluble phosphorus, regardless of the type of mechanical pretreated wastewater considered. This result indicates that forward osmosis membranes can tolerate exposure to municipal waste water and that the permeate can fulfil the Swedish discharge limits.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Biomimetic membrane, forward osmosis, membrane fouling, microfiltration, microsieving, wastewater treatment
in
Environmental Technology
pages
10 pages
publisher
Selper Ltd
external identifiers
  • scopus:84996774820
  • wos:000406716200006
ISSN
0959-3330
DOI
10.1080/09593330.2016.1256440
language
English
LU publication?
yes
id
0decb4f1-9a38-4bbb-b153-866e0d60f671
date added to LUP
2016-12-09 11:16:31
date last changed
2017-09-18 11:30:44
@article{0decb4f1-9a38-4bbb-b153-866e0d60f671,
  abstract     = {<p>Municipal wastewater treatment involves mechanical, biological and chemical treatment steps for protecting the environment from adverse effects. The biological treatment step consumes the most energy and can create greenhouse gases. This study investigates municipal wastewater treatment without the biological treatment step, including the effects of different pretreatment configurations, for example, direct membrane filtration before forward osmosis. Forward osmosis was tested using raw wastewater and wastewater subjected to different types of mechanical pretreatment, for example, microsieving and microfiltration permeation, as a potential technology for municipal wastewater treatment. Forward osmosis was performed using Aquaporin Inside™ and Hydration Technologies Inc. (HTI) membranes with NaCl as the draw solution. Both types of forward osmosis membranes were tested in parallel for the different types of pretreated feed and evaluated in terms of water flux and solute rejection, that is, biochemical oxygen demand (BOD<sub>7</sub>) and total and soluble phosphorus contents. The Aquaporin and HTI membranes achieved a stable water flux with rejection rates of more than 96% for BOD<sub>7</sub> and total and soluble phosphorus, regardless of the type of mechanical pretreated wastewater considered. This result indicates that forward osmosis membranes can tolerate exposure to municipal waste water and that the permeate can fulfil the Swedish discharge limits.</p>},
  author       = {Hey, Tobias and Zarebska, Agata and Bajraktari, Niada and Vogel, Jörg and Hélix-Nielsen, Claus and la Cour Jansen, Jes and Jönsson, Karin},
  issn         = {0959-3330},
  keyword      = {Biomimetic membrane,forward osmosis,membrane fouling,microfiltration,microsieving,wastewater treatment},
  language     = {eng},
  month        = {11},
  pages        = {10},
  publisher    = {Selper Ltd},
  series       = {Environmental Technology},
  title        = {Influences of mechanical pretreatment on the non-biological treatment of municipal wastewater by forward osmosis},
  url          = {http://dx.doi.org/10.1080/09593330.2016.1256440},
  year         = {2016},
}