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Production of drinking water using a multi-barrier approach integrating nanofiltration: a pilot scale study

2013Journal article Open access
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dc.contributor.authorLopes, Mafalda T. P.
dc.contributor.authorMatos, Cristina T.
dc.contributor.authorPereira, Vanessa J.
dc.contributor.authorBenoliel, Maria J.
dc.contributor.authorValério, Maria Ermelinda
dc.contributor.authorBucha, Luís B.
dc.contributor.authorRodrigues, Alexandre
dc.contributor.authorPenetra, Ana I.
dc.contributor.authorFerreira, Elisabete
dc.contributor.authorCardoso, Vitor
dc.contributor.authorReis, Maria A.
dc.contributor.authorCrespo, João
dc.date.accessioned2015-03-26T16:39:24Z
dc.date.available2015-03-26T16:39:24Z
dc.date.issued2013
dc.description.abstractA multi-barrier system was studied for the production of drinking water with high chemical and microbiological quality. The integration of nanofiltration (NF) and ultraviolet (UV) photolysis was tested at pilot scale in a surface water treatment plant. The NF membranes tested, Desal DK and NF270, allow for the production of permeates with high quality standards, although the membrane with higher molecular weight cut-off (NF270) revealed to be the best option for surface water treatment due to its higher permeability. The NF270 membrane was also efficient to deliver high quality water, even under high pollutant concentrations, making possible to operate with water recovery rates as high as 98%. Extensive studies were performed in the water treatment plant where the proposed system was tested at three locations of the drinking water production line. Seeking to achieve the best compromise between high recovery rate, high retention of chemicals and microorganisms as well as preventing operational problems (flux decline and fouling), it was found that the integrated system should be placed after the conventional sand filtration, operating at a 91% recovery rate. Under the selected conditions – TMP of 8 bar and recovery rate of 91% – it is possible to operate at constant permeability without flux decline for a period of 15 days, after which a gentle CIP procedure is recommended. Membrane fouling was also investigated and the major foulant classes identified were proteins, polysaccharides and humic acids. A cleaning protocol was also tested and the impact of each cleaning step on the recovery of permeability evaluated.por
dc.identifier.citationLopes, M.P.; Matos, C.T.; Pereira, V.J. [et.al.]. - Production of drinking water using a multi-barrier approach integrating nanofiltration: a pilot scale study. In: Separation and Purification Technology, 2013, Vol. 119, p. 112-122por
dc.identifier.issn1383-5866
dc.identifier.urihttp://hdl.handle.net/10400.9/2676
dc.language.isoengpor
dc.publisherElsevierpor
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.seppur.2013.09.002por
dc.subjectWater qualitypor
dc.subjectWater treatmentpor
dc.subjectNanofiltrationpor
dc.subjectUV photolysispor
dc.subjectFouling analysispor
dc.titleProduction of drinking water using a multi-barrier approach integrating nanofiltration: a pilot scale studypor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage122por
oaire.citation.startPage112por
oaire.citation.titleSeparation and Purification Technologypor
oaire.citation.volume119por
person.familyNameReis
person.familyNameCrespo
person.givenNameMaria A.
person.givenNameJoão
person.identifier.ciencia-id2813-8333-637F
person.identifier.ciencia-idCC1A-3CD0-EA8B
person.identifier.orcid0000-0003-4000-1836
person.identifier.orcid0000-0001-8714-3781
person.identifier.ridD-8303-2013
person.identifier.ridD-8719-2013
person.identifier.scopus-author-id7102676470
person.identifier.scopus-author-id13410505700
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationb62d587a-eab4-4076-9a1d-a47f179d66e8
relation.isAuthorOfPublicationf0fbba7d-b90e-477e-be9f-57a4b87bbb3d
relation.isAuthorOfPublication.latestForDiscoveryb62d587a-eab4-4076-9a1d-a47f179d66e8

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