Pressure dependent network water quality modelling

Alemtsehay Gebremeskel Seyoum, Tiku Tanyimboh

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Water quality models are increasingly being used routinely to help ascertain the quality of water in drinking water distribution systems for design and operational management purposes. Conventional water quality models are demand driven and consequently do not incorporate the effects of any deficiency in pressure on the water quality throughout the distribution network. This paper assesses a new integrated pressure dependent hydraulic and water quality model. The model is an extension of the well-known EPANET 2 model that has an embedded logistic pressure dependent nodal flow function. Hydraulic and water quality analyses based on two water supply zones in the UK were conducted for a range of simulated operating conditions including normal and subnormal pressure and pipe closures. It is shown that operating conditions with subnormal pressures, if severe and protracted, can lead to spatial and temporal distributions of the water age and concentrations of chlorine and disinfection by-products that are significantly different from operating conditions in which the pressure is satisfactory. The results here may be indicative of modelling errors that may not have been recognised explicitly hitherto.
LanguageEnglish
Pages342-355
Number of pages14
JournalProceedings of the ICE - Water Management
Volume167
Issue number6
Early online date9 Dec 2013
DOIs
Publication statusPublished - Jun 2014

Fingerprint

water quality
modeling
hydraulics
temporal distribution
disinfection
chlorine
logistics
pipe
water supply
drinking water
spatial distribution
water

Keywords

  • water distribution networks
  • disinfection by-products
  • chlorine residual
  • drinking water quality standards
  • pressure dependent modelling
  • EPANET
  • water quality modelling

Cite this

Seyoum, Alemtsehay Gebremeskel ; Tanyimboh, Tiku. / Pressure dependent network water quality modelling. In: Proceedings of the ICE - Water Management . 2014 ; Vol. 167, No. 6. pp. 342-355.
@article{9d8157f7d00d423da65a36dff2c68a78,
title = "Pressure dependent network water quality modelling",
abstract = "Water quality models are increasingly being used routinely to help ascertain the quality of water in drinking water distribution systems for design and operational management purposes. Conventional water quality models are demand driven and consequently do not incorporate the effects of any deficiency in pressure on the water quality throughout the distribution network. This paper assesses a new integrated pressure dependent hydraulic and water quality model. The model is an extension of the well-known EPANET 2 model that has an embedded logistic pressure dependent nodal flow function. Hydraulic and water quality analyses based on two water supply zones in the UK were conducted for a range of simulated operating conditions including normal and subnormal pressure and pipe closures. It is shown that operating conditions with subnormal pressures, if severe and protracted, can lead to spatial and temporal distributions of the water age and concentrations of chlorine and disinfection by-products that are significantly different from operating conditions in which the pressure is satisfactory. The results here may be indicative of modelling errors that may not have been recognised explicitly hitherto.",
keywords = "water distribution networks, disinfection by-products, chlorine residual, drinking water quality standards, pressure dependent modelling, EPANET, water quality modelling",
author = "Seyoum, {Alemtsehay Gebremeskel} and Tiku Tanyimboh",
year = "2014",
month = "6",
doi = "10.1680/wama.12.00118",
language = "English",
volume = "167",
pages = "342--355",
journal = "Proceedings of the ICE - Water Management",
issn = "1741-7589",
number = "6",

}

Pressure dependent network water quality modelling. / Seyoum, Alemtsehay Gebremeskel; Tanyimboh, Tiku.

In: Proceedings of the ICE - Water Management , Vol. 167, No. 6, 06.2014, p. 342-355.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Pressure dependent network water quality modelling

AU - Seyoum, Alemtsehay Gebremeskel

AU - Tanyimboh, Tiku

PY - 2014/6

Y1 - 2014/6

N2 - Water quality models are increasingly being used routinely to help ascertain the quality of water in drinking water distribution systems for design and operational management purposes. Conventional water quality models are demand driven and consequently do not incorporate the effects of any deficiency in pressure on the water quality throughout the distribution network. This paper assesses a new integrated pressure dependent hydraulic and water quality model. The model is an extension of the well-known EPANET 2 model that has an embedded logistic pressure dependent nodal flow function. Hydraulic and water quality analyses based on two water supply zones in the UK were conducted for a range of simulated operating conditions including normal and subnormal pressure and pipe closures. It is shown that operating conditions with subnormal pressures, if severe and protracted, can lead to spatial and temporal distributions of the water age and concentrations of chlorine and disinfection by-products that are significantly different from operating conditions in which the pressure is satisfactory. The results here may be indicative of modelling errors that may not have been recognised explicitly hitherto.

AB - Water quality models are increasingly being used routinely to help ascertain the quality of water in drinking water distribution systems for design and operational management purposes. Conventional water quality models are demand driven and consequently do not incorporate the effects of any deficiency in pressure on the water quality throughout the distribution network. This paper assesses a new integrated pressure dependent hydraulic and water quality model. The model is an extension of the well-known EPANET 2 model that has an embedded logistic pressure dependent nodal flow function. Hydraulic and water quality analyses based on two water supply zones in the UK were conducted for a range of simulated operating conditions including normal and subnormal pressure and pipe closures. It is shown that operating conditions with subnormal pressures, if severe and protracted, can lead to spatial and temporal distributions of the water age and concentrations of chlorine and disinfection by-products that are significantly different from operating conditions in which the pressure is satisfactory. The results here may be indicative of modelling errors that may not have been recognised explicitly hitherto.

KW - water distribution networks

KW - disinfection by-products

KW - chlorine residual

KW - drinking water quality standards

KW - pressure dependent modelling

KW - EPANET

KW - water quality modelling

UR - http://www.icevirtuallibrary.com/content/serial/wama

U2 - 10.1680/wama.12.00118

DO - 10.1680/wama.12.00118

M3 - Article

VL - 167

SP - 342

EP - 355

JO - Proceedings of the ICE - Water Management

T2 - Proceedings of the ICE - Water Management

JF - Proceedings of the ICE - Water Management

SN - 1741-7589

IS - 6

ER -