Comparison of a sand and membrane filtration unit for drinking water production –focus on the arsenic removal

Krysztof Kowalski, Erik Gydesen Søgaard

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearch

Abstract

Arsenic removal from groundwater by help of micro- (pore size of 1 µm) and ultrafiltration (pore size of 0,04 µm) was evaluated and compared with sand filtration. The dead-end filtration enabled to compare MF/UF with conventional sand filter. The results indicate that none of membrane processes were able to remove efficiently As(III); contrary, that was possible with help of sand filtration. However the presented methodology helps in evaluating membrane filtration performance in order to find Fe dose. The results indicate that Fe dose have to be raised with higher As(III) and NOM content, which were found to be responsible for hindering total As removal with help of iron precipitates. Moreover the presence of NOM increased the fouling potential, which shall also be considered in the full scale treatment with use of membrane filtration.
Original languageEnglish
Title of host publicationComparison of a sand and membrane filtration unit for drinking water production –focus on the arsenic removal
PublisherIWA Publishing
Publication date2013
Publication statusPublished - 2013
EventIWA Specialist Conference on Membrane Technology for Water & Wastewater Treatment - Toronto, Canada
Duration: 25 Aug 201329 Aug 2013
Conference number: 7th

Conference

ConferenceIWA Specialist Conference on Membrane Technology for Water & Wastewater Treatment
Number7th
CountryCanada
CityToronto
Period25/08/201329/08/2013

Keywords

  • groundwater
  • iron fouling
  • backwashed sludge
  • sand filtration
  • microfiltration

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