Removal of nitrate ions from natural water using a membrane bioreactor

The research aimed at determining effectiveness of nitrates removal from na tural ground water in a membrane bioreactor (MBR) with capillary polymer me mbranes. The paper presents an influence of nitrate loading on denitrificat ion in an anaerobic packed-bed reactor, a sanitary and epidemiological anal ysis in a culture apparatus and effectiveness in removal of microorganisms from a post-culture effluent during microfiltration. The installation used for denitrification, which contained a bioreactor and membrane module made of capillary fibers, was fed continuously for several months with natural g round water enriched with organic carbon (methanol). (C) 2001 Elsevier Scie nce B.V. All rights reserved.