Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 342-355 |
| Number of pages | 14 |
| Journal | Proceedings of the ICE - Water Management |
| Volume | 167 |
| Issue number | 6 |
| Early online date | 9 Dec 2013 |
| DOIs | |
| Publication status | Published - Jun 2014 |
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Keywords
- water distribution networks
- disinfection by-products
- chlorine residual
- drinking water quality standards
- pressure dependent modelling
- EPANET
- water quality modelling
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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 journal › Article
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
JF - Proceedings of the ICE - Water Management
SN - 1741-7589
IS - 6
ER -