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Application of enhanced assimilable organic carbon method across operational drinking water systems
- Source :
- PLoS ONE, Vol 14, Iss 12, p e0225477 (2019), PLoS ONE
- Publication Year :
- 2019
- Publisher :
- Public Library of Science (PLoS), 2019.
-
Abstract
- Assimilable organic carbon (AOC) is known to correlate with microbial growth, which can consequently degrade drinking water quality. Despite this, there is no standardised AOC test that can be applied to drinking water distribution systems (DWDS). Herein we report the development of a quick, robust AOC that incorporates known strains Pseudomonas fluorescens strain P-17 and Spirillum strain NOX, a higher inoculum volume and enumeration using flow cytometry to generate a quicker (total test time reduced from 14 to 8 days), robust method. We apply the developed AOC test to twenty drinking water treatment works (WTW) to validate the method reproducibility and resolution across a wide range of AOC concentrations. Subsequently, AOC was quantified at 32 sample points, over four DWDS, for a year in order to identify sinks and sources of AOC in operative networks. Application of the developed AOC protocol provided a previously unavailable insight and novel evidence of pipes and service reservoirs exhibiting different AOC and regrowth behaviour. Observed correlations between AOC and microbial growth highlight the importance of monitoring AOC as an integral part of managing drinking water quality at the consumers tap.
- Subjects :
- Environmental Engineering
Water Management
Science
Cell Enumeration Techniques
0208 environmental biotechnology
02 engineering and technology
010501 environmental sciences
Bacterial growth
Research and Analysis Methods
Pseudomonas fluorescens
01 natural sciences
Water Purification
Distribution system
Spectrum Analysis Techniques
Natural Resources
Water Quality
Organic Chemicals
0105 earth and related environmental sciences
Total organic carbon
Multidisciplinary
Bacteria
Drinking Water
Ecology and Environmental Sciences
Organisms
Biology and Life Sciences
Total Cell Counting
Reproducibility of Results
Spirillum
Flow Cytometry
Pulp and paper industry
Carbon
020801 environmental engineering
Chemistry
Spectrophotometry
Physical Sciences
Water Resources
Engineering and Technology
Medicine
Environmental science
Water treatment
Cytophotometry
Water quality
Chlorine
Water Microbiology
Research Article
Chemical Elements
Subjects
Details
- ISSN :
- 19326203
- Volume :
- 14
- Database :
- OpenAIRE
- Journal :
- PLOS ONE
- Accession number :
- edsair.doi.dedup.....ebd92f740a245d52910ae34cf726ddb3