Technical Note: Community of bacteria attached on the PVDF MF membrane surface fouled from drinking water treatment, in Seoul, Korea

Abstract

Abstract. Alpha, beta, and gamma proteobacteria comprise approximately 68, 16, and 7% of all identified bacteria. In this study, bacterial communities that had fouled polyvinylidene fluoride microfiltration membranes, which are used for drinking water treatment, over an 18 month period were analyzed using the 16s rRNA gene clone library method. The alpha, beta, and gamma proteobacteria were composed of mainly Bradyrhizobium and Rhodopseudomonas, Ralstonia, and Legionella, respectively. The presence of a relatively high amount of alpha proteobacteria was due to the oligotrophic condition of the drinking water source, the Han River, tested in this specific case study. The second most prominent bacteria community was the beta proteobacteria, which are typically found in a freshwater environment. This finding supports the notion that the drinking water source was relatively clean. Analyses of the organic foulants indicated that they were most likely from extra cellular polymers and/or cell fractured chemicals from bacteria or micro-organisms, as identified using organic characterizing tools, including 3-D fluorescence excitation-emission matrix and Fourier transform IR analyses.

Physio-chemical characteristics and bacterial diversity in copper mining wastewater based on 16S rRNA gene analysis

“…Previously, the Afipia sp. has also been reported from the membrane of drinking water treatment (Chon et al, 2009). Like A. ferrooxidans, Rheinheimera sp.…”

Μελέτη Προκαρυωτικής Ποικιλότητας Στα Ακραία Περιβάλλοντα Μιας Αλυκής Και Των Βιομηχανικών Λυμάτων Χρωμίου

“…Σέινο κέιε ησλ ηαμηλνκηθώλ κνλάδσλ Afipia spp., Rhodoferax spp. θαη Pedobacter spp., ζρεηίδνληαη κε κνλάδεο επεμεξγαζίαο λεξνύ (Li et al, 2010;Shaw et al, 2008;Vanparys et al, 2005 Chon et al, 2009). Ο πιεζηέζηεξνο ζπγγελήο ησλ αιιεινπρηώλ ηεο νκάδαο Pedobacter spp., πξνέξρνληαλ από θπζηθά επηθαλεηαθά λεξά (Vanparys et al, 2005) ελώ ν πιεζηέζηεξνο ζπγγελήο ησλ αιιεινπρηώλ ηεο νκάδαο Rhodoferax spp., είλαη έλα ζεηναλαγσγηθό βαθηήξην πνπ απνκνλώζεθε από παξάθηηα ηδήκαηα (Finneran et al, 2003).…”