Direct capillary nanofiltration - A new high-grade purification concept

Harry Futselaar*, Henk Schonewille, Walter Van Der Meer

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

44 Citations (Scopus)


Capillary nanofiltration (NF) enables raw water to be treated in a single step to produce high quality permeate. The permeate can be used as process water for the industry. Trial studies show that a stable operation is achievable using capillary NF without pretreatment (in other words direct NF), that the technique saves energy, that there is a low use of chemicals and that the permeate is of a high quality. The capillary NF membrane module combines the favorable cleaning properties of capillary ultrafiltration membranes with the favorable separation properties of NF membranes in terms of the removal of bacteria, viruses, color, hardness and pesticides.

Original languageEnglish
Pages (from-to)75-80
Number of pages6
Issue number1-3
Publication statusPublished - 10 Sept 2002
Externally publishedYes


  • Capillary membrane
  • Direct treatment
  • Nanofiltration
  • Surface water
  • Wastewater


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