Professional paper
https://doi.org/10.15255/KUI.2019.048
Treatment of Municipal Wastewater by Membrane Processes
Davor Dolar
orcid.org/0000-0002-4699-1298
; Faculty of Chemical Engineering and Technology University of Zagreb, Marulićev trg 19 10 000 Zagreb, Croatia
Marko Racar
orcid.org/0000-0002-0956-2152
; Faculty of Chemical Engineering and Technology University of Zagreb, Marulićev trg 19 10 000 Zagreb, Croatia
Krešimir Košutić
; Faculty of Chemical Engineering and Technology University of Zagreb, Marulićev trg 19 10 000 Zagreb, Croatia
Nina Čavarović
; Faculty of Chemical Engineering and Technology University of Zagreb, Marulićev trg 19 10 000 Zagreb, Croatia
Klara Karadakić
; Faculty of Chemical Engineering and Technology University of Zagreb, Marulićev trg 19 10 000 Zagreb, Croatia
Abstract
Industrialization, population growth, and urbanization are the main causes for the generation of increasing quantities of municipal wastewater (MWW) which, untreated, pose a serious threat to natural aquifers. In order to protect the environment and natural resources, it is necessary to use high-efficiency and environmentally friendly technologies for the treatment of MWW. The goal of this work was treatment of MWW with advanced membrane processes; membrane bioreactor (MBR) and nanofiltration (NF) and reverse osmosis (RO). Laboratory and pilot treatment of MWW with MBR resulted in a reduction of more than 92 % in chemical oxygen demand (COD), biochemical oxygen demand (BOD5), turbidity and suspended matter. The number of microbiological parameters decreased by 4.12 log10 to 4.88 log10. Subsequent treatment of MBR effluent with RO/NF membranes (XLE and NF270) further reduced all measured parameters.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Keywords
municipal wastewater; membrane processes; membrane bioreactor; nanofiltration; reverse osmosis
Hrčak ID:
225496
URI
Publication date:
7.10.2019.
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