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Direct Membrane Filtration for municipal wastewater treatment: Developing a membrane process

Lipnizki, Frank LU orcid and Hey, Tobias LU orcid (2022) Nordic Filtration Symposium, 2022
Abstract
This work presents the development and evaluation of a Direct Membrane Filtration (DMF) concept for municipal wastewater treatment, integrating microsieving, microfiltration/ultrafiltration (MF/UF), and downstream polishing with activated carbon. DMF enables the efficient separation of particulate organic matter directly from raw wastewater, producing a retentate suitable for enhanced biogas production and a permeate that can be upgraded for advanced treatment. Pilot studies conducted at Källby WWTP (Sweden) and FREVAR WWTP (Norway) demonstrate that the DMF process achieves effluent quality compliant with discharge limits for small and medium-sized plants, while significantly reducing footprint and treatment steps. Results show substantial... (More)
This work presents the development and evaluation of a Direct Membrane Filtration (DMF) concept for municipal wastewater treatment, integrating microsieving, microfiltration/ultrafiltration (MF/UF), and downstream polishing with activated carbon. DMF enables the efficient separation of particulate organic matter directly from raw wastewater, producing a retentate suitable for enhanced biogas production and a permeate that can be upgraded for advanced treatment. Pilot studies conducted at Källby WWTP (Sweden) and FREVAR WWTP (Norway) demonstrate that the DMF process achieves effluent quality compliant with discharge limits for small and medium-sized plants, while significantly reducing footprint and treatment steps. Results show substantial removal of COD, TOC, phosphorus, and nitrogen through microsieving and MF/UF, and more than 97% removal of 26 monitored micropollutants after granulated activated carbon filtration. The study highlights DMF as an energy‑efficient, compact, and scalable alternative to conventional treatment, with ongoing research focusing on microplastics and emerging contaminant removal. (Less)
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author
and
organization
publishing date
type
Contribution to conference
publication status
unpublished
subject
keywords
Membranes, Direct membrane filtration, Wastewater treatment
conference name
Nordic Filtration Symposium, 2022
conference location
Gothenburg, Sweden
conference dates
2022-08-16 - 2022-08-17
project
REsilient WAter Innovation for Smart Economy
language
English
LU publication?
yes
id
91b3baa2-d9c2-4b94-996b-757acb504d76
date added to LUP
2023-12-27 13:45:21
date last changed
2026-01-08 10:53:15
@misc{91b3baa2-d9c2-4b94-996b-757acb504d76,
  abstract     = {{This work presents the development and evaluation of a Direct Membrane Filtration (DMF) concept for municipal wastewater treatment, integrating microsieving, microfiltration/ultrafiltration (MF/UF), and downstream polishing with activated carbon. DMF enables the efficient separation of particulate organic matter directly from raw wastewater, producing a retentate suitable for enhanced biogas production and a permeate that can be upgraded for advanced treatment. Pilot studies conducted at Källby WWTP (Sweden) and FREVAR WWTP (Norway) demonstrate that the DMF process achieves effluent quality compliant with discharge limits for small and medium-sized plants, while significantly reducing footprint and treatment steps. Results show substantial removal of COD, TOC, phosphorus, and nitrogen through microsieving and MF/UF, and more than 97% removal of 26 monitored micropollutants after granulated activated carbon filtration. The study highlights DMF as an energy‑efficient, compact, and scalable alternative to conventional treatment, with ongoing research focusing on microplastics and emerging contaminant removal.}},
  author       = {{Lipnizki, Frank and Hey, Tobias}},
  keywords     = {{Membranes; Direct membrane filtration; Wastewater treatment}},
  language     = {{eng}},
  month        = {{08}},
  title        = {{Direct Membrane Filtration for municipal wastewater treatment: Developing a membrane process}},
  year         = {{2022}},
}