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Abstract

Rising organic matter concentrations in surface waters in many Nordic countries require current drinking water treatment processes to be adapted. Accordingly, the use of a novel nanofiltration (NF) membrane was studied during a nine month period in pilot scale at a large drinking water treatment plant in Stockholm, Sweden. A chemically resistant hollow-fibre NF membrane was fed with full scale process water from a rapid sand filter after aluminum sulfate coagulation. The combined coagulation and NF process removed more than 90% of the incoming lake water dissolved organic carbon (DOC) (8.7 mg C L-1), and 96% of the absorbance at 254 nm (A254) (0.28 cm(-1) incoming absorbance). Including granulated active carbon GAC) filter, the complete pilot plant treatment process we observed decreases in DOC concentration (8.7-0.5 mg C L-1), SUVA (3.1-1.7 mg(-1) L m(-1)), and the average nominal molecular mass (670-440 Da). Meanwhile, water hardness was practically unaffected (

Keywords

Nanofiltration (NF); Hollow fibre; Humic substances (HS); Drinking water; Fluorescence EEM; GAC

Published in

Water Research
2016, volume: 89, pages: 232-240
Publisher: PERGAMON-ELSEVIER SCIENCE LTD

SLU Authors

Global goals (SDG)

SDG6 Clean water and sanitation
SDG13 Climate action

UKÄ Subject classification

Water Treatment

Publication identifier

  • DOI: https://doi.org/10.1016/j.watres.2015.11.048

Permanent link to this page (URI)

https://res.slu.se/id/publ/83026