Files in this item



application/pdfISWSRI-78.pdf (467kB)
ISWS Report of Investigation RI-78PDF


Title:Evaluation of Methods for Detecting Coliforms and Fecal Streptococci in Chlorinated Sewage Effluents
Author(s):Lin, S.D.
enrichment procedure
environmental engineering
fecal coliforms
fecal streptococci
MF and MPN methods
prolonged incubation
sanitary engineering
secondary sewage effluents
total coliforms
water polution
Abstract:Total coliform (TC), fecal coliform (FC), and fecal streptococcus (FS) recoveries in chlorinated secondary sewage effluents were investigated by the membrane filter (MF) and multiple-tube (most probable number, MPN) methods. The LES two-step MF method was found to be comparable to the MPN procedure for determining TC. The TC detection was 1.5 times greater by the LES two-step technique than that obtained by the M-Endo one-step MF procedure. Fecal coliform recovery by the M-FC MF procedure was lower than the recovery obtained by the MPN method. Azide-dextrose broth, brain-heart infusion broth, and peptone yeast-extract casitone used separately with the M-Enterococcus agar MF2 (2-day incubation) procedure were not satisfactory for the recovery of FS. The M-Enterococcus agar procedure with bile broth enrichment (MF2) or prolonged incubation for 3 days (MF3) significantly increased FS recovery and both were comparable to the MPN method. The results cited should be useful in assessing the efficiency of disinfection practices for waste treatment plants employing effluent chlorination.
Issue Date:1974
Publisher:Illinois State Water Survey
Series/Report:Report of Investigation (Illinois State Water Survey) RI-078
Genre:Technical Report
Publication Status:published
Peer Reviewed:peer reviewed
Rights Information:Copyright, University of Illinois Board of Trustees. All rights reserved. This document is a product of the Illinois State Water Survey, and has been selected and made available by the Illinois State Water Survey and the University Library, University of Illinois at Urbana-Champaign. It is intended for research and educational use, and proper attribution is requested.
Date Available in IDEALS:2015-05-28

This item appears in the following Collection(s)

Item Statistics