Need for and use of high-resolution turbidity monitoring in managing discoloration in distributionCitation formats

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Need for and use of high-resolution turbidity monitoring in managing discoloration in distribution. / Gaffney, John W.; Boult, Stephen.

In: Journal of Environmental Engineering, Vol. 138, No. 6, 06.2012, p. 637-644.

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Gaffney, John W. ; Boult, Stephen. / Need for and use of high-resolution turbidity monitoring in managing discoloration in distribution. In: Journal of Environmental Engineering. 2012 ; Vol. 138, No. 6. pp. 637-644.

Bibtex

@article{239cac91fe12407f9fe31bcc8d044dd7,
title = "Need for and use of high-resolution turbidity monitoring in managing discoloration in distribution",
abstract = "Turbidity measurements at high temporal resolution from several sites within the distribution network gave a more complete record of the variability of turbidity than previously possible, showing that there are frequent movements of sediment at low concentrations. Knowledge of the availability of sediment was shown to be important to the prediction of turbidity, as the correlation of hydraulic disturbance (indicated by pressure change) alone with changes in turbidity was weak. These data sets also showed with greater confidence than previously possible that mains flushing frequently resulted in the incomplete removal of sediment. Given that knowledge of sediment availability is required to reduce uncertainty in the prediction of turbidity, measurements at high temporal and spatial resolutions were used to calculate sediment mass balances and determine sediment distribution within the study area. A net accumulation of 0.923 kg of sediment was observed within 2,482 m of the main, equivalent to 5.212-g-m-1y-1; it was also possible to identify the impact of hydraulic disturbance in changing sediment sinks to sources during the monitored period. In addition, the sediment fluxes gave some insight into the processes of deposition and resuspension. The former was shown to be unaffected by sediment concentration, and an increase in the latter was seen to persist for several days following a hydraulic disturbance of",
keywords = "Flushing, Monitoring, Sediment transport, Turbidity",
author = "Gaffney, {John W.} and Stephen Boult",
year = "2012",
month = jun,
doi = "10.1061/(ASCE)EE.1943-7870.0000521",
language = "English",
volume = "138",
pages = "637--644",
journal = "Journal of Environmental Engineering",
issn = "0733-9372",
publisher = "American Society of Civil Engineers",
number = "6",

}

RIS

TY - JOUR

T1 - Need for and use of high-resolution turbidity monitoring in managing discoloration in distribution

AU - Gaffney, John W.

AU - Boult, Stephen

PY - 2012/6

Y1 - 2012/6

N2 - Turbidity measurements at high temporal resolution from several sites within the distribution network gave a more complete record of the variability of turbidity than previously possible, showing that there are frequent movements of sediment at low concentrations. Knowledge of the availability of sediment was shown to be important to the prediction of turbidity, as the correlation of hydraulic disturbance (indicated by pressure change) alone with changes in turbidity was weak. These data sets also showed with greater confidence than previously possible that mains flushing frequently resulted in the incomplete removal of sediment. Given that knowledge of sediment availability is required to reduce uncertainty in the prediction of turbidity, measurements at high temporal and spatial resolutions were used to calculate sediment mass balances and determine sediment distribution within the study area. A net accumulation of 0.923 kg of sediment was observed within 2,482 m of the main, equivalent to 5.212-g-m-1y-1; it was also possible to identify the impact of hydraulic disturbance in changing sediment sinks to sources during the monitored period. In addition, the sediment fluxes gave some insight into the processes of deposition and resuspension. The former was shown to be unaffected by sediment concentration, and an increase in the latter was seen to persist for several days following a hydraulic disturbance of

AB - Turbidity measurements at high temporal resolution from several sites within the distribution network gave a more complete record of the variability of turbidity than previously possible, showing that there are frequent movements of sediment at low concentrations. Knowledge of the availability of sediment was shown to be important to the prediction of turbidity, as the correlation of hydraulic disturbance (indicated by pressure change) alone with changes in turbidity was weak. These data sets also showed with greater confidence than previously possible that mains flushing frequently resulted in the incomplete removal of sediment. Given that knowledge of sediment availability is required to reduce uncertainty in the prediction of turbidity, measurements at high temporal and spatial resolutions were used to calculate sediment mass balances and determine sediment distribution within the study area. A net accumulation of 0.923 kg of sediment was observed within 2,482 m of the main, equivalent to 5.212-g-m-1y-1; it was also possible to identify the impact of hydraulic disturbance in changing sediment sinks to sources during the monitored period. In addition, the sediment fluxes gave some insight into the processes of deposition and resuspension. The former was shown to be unaffected by sediment concentration, and an increase in the latter was seen to persist for several days following a hydraulic disturbance of

KW - Flushing

KW - Monitoring

KW - Sediment transport

KW - Turbidity

U2 - 10.1061/(ASCE)EE.1943-7870.0000521

DO - 10.1061/(ASCE)EE.1943-7870.0000521

M3 - Article

VL - 138

SP - 637

EP - 644

JO - Journal of Environmental Engineering

JF - Journal of Environmental Engineering

SN - 0733-9372

IS - 6

ER -