Reduction of FRNA-bacteriophages and faecal indicator bacteria by dune infiltration and estimation of sticking efficiencies

摘要

A field study was performed to investigate reduction by dune infiltration and to estimate sticking efficiencies of F-specific RNA bacteriophages, total and thermotolerant coliforms, faecal streptococci and spores of sulphite-reducing clostridia. Reduction was considered as a P-binomially distributed process and a Monte Carlo simulation was applied for estimating sticking efficiencies. Reduction of F-specific RNA bacteriophages within the first 2 m was 3.8 log(10) and the sticking efficiency was about 0.002. The faecal indicator bacteria were removed only 0.9 log(10) within 2m and sticking efficiency was 0.007. Concentrations of spores of sulphite reducing clostridia were reduced 1.9 log(10) and their sticking efficiency was about 0.009. (C) 1998 IAWQ Published by Elsevier Science Ltd. All rights reserved. [References: 12]