ADHESION PROPERTY OF MICRO-PARTICLES, MANGANESE AND BACTERIA ONTO INNER SURFACES OF WATER DISTRIBUTION PIPE

Abstract

 The initial adhesion of micro-particles (>0.45 μm), Mn particles and P. fluorescens to various distribution pipe materials were investigated. Adhesion experiments were conducted using test pieces made of epoxy resin, polyethylene (PE), polyvinylchloride (PVC), high impact PVC (HI). It was demonstrated that, among tested pipe materials, no significant difference was observed for micro-particles adhesion. For Mn particle adhesion, however, a little higher adhesion was observed in epoxy resin and PVC, while PVC showed higher adhesion of P. fluorescens. Since Mn particles and bacteria are minor constituent of suspended matter in treated drinking water, the initial adhesion of suspended matter can be considered to be constant among tested pipe materials.